SERIES 682XXB/683XXB SYNTHESIZED SIGNAL GENERATORS MAINTENANCE MANUAL 490 JARVIS DRIVE MORGAN HILL, CA 95037-2809 P/N: 10370-10290 REVISION: H PRINTED: AUGUST 2003 COPYRIGHT 2003 ANRITSU CO.
WARRANTY The ANRITSU product(s) listed on the title page is (are) warranted against defects in materials and workmanship for one year from the date of shipment. ANRITSU’s obligation covers repairing or replacing products which prove to be defective during the warranty period. Buyers shall prepay transportation charges for equipment returned to ANRITSU for warranty repairs. Obligation is limited to the original purchaser. ANRITSU is not liable for consequential damages.
Table Of Contents Chapter 1 - General Information 1-1 SCOPE OF MANUAL . . . . . . . . . . . . . . . . . 1-3 1-2 INTRODUCTION . . . . . . . . . . . . . . . . . . . 1-3 1-3 DESCRIPTION . . . . . . . . . . . . . . . . . . . . 1-3 1-4 IDENTIFICATION NUMBER . . . . . . . . . . . . 1-5 1-5 ELECTRONIC MANUAL . . . . . . . . . . . . . . . 1-6 1-6 RELATED MANUALS . . . . . . Operation Manual . . . . . . . GPIB Programming Manual . . SCPI Programming Manual . . 1-7 OPTIONS . . . . . . . . . . . . . . . .
Table of Contents (Continued) ALC/AM/Pulse Modulation . . RF Deck . . . . . . . . . . . Power Supply . . . . . . . . Inputs/Outputs . . . . . . . Motherboard/Interconnections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 2-8 2-8 2-8 2-9 2-3 FREQUENCY SYNTHESIS . . . . . . . . . . . . . 2-9 Phase-Lock Loops . . . . . . . . . . . . . . . . 2-9 Overall Operation . . . . . . . . . . . . . . . 2-10 RF Outputs 0.01 to 65 GHz . . . . . . . . .
Table of Contents (Continued) 3-7 FREQUENCY SYNTHESIS TESTS . . Test Setup . . . . . . . . . . . . . . Coarse Loop/YIG Loop Test Procedure. Fine Loop Test Procedure . . . . . . . 3-8 SPURIOUS SIGNALS TEST: RF OUTPUT SIGNALS £2 GHz (£2.2 GHz for 68XX5B MODELS) . . . . . 3-14 Test Setup . . . . . . . . . . . . . . . . . . . 3-14 0.01 - 2 GHz Test Procedure . . . . . . . . . . 3-14 0.5 - 2.2 GHz Test Procedure . . . . . . . . . . 3-17 3-9 HARMONIC TEST: RF OUTPUT SIGNALS FROM 2 TO 20 GHz . . . . . . . . .
Table of Contents (Continued) 3-16 PULSE MODULATION TEST: RF ON/OFF RATIO 3-45 Test Setup . . . . . . . . . . . . . . . . . . . 3-45 Test Procedure . . . . . . . . . . . . . . . . . 3-45 3-17 PHASE MODULATION TESTS. . . . . . . . . . . 3-48 Test Setup . . . . . . . . . . . . . . . . . . . 3-48 FM Input Sensitivity Procedure. . . . . . . . . 3-48 Chapter 4 - Calibration iv 4-1 INTRODUCTION . . . . . . . . . . . . . . . . . . . 4-3 4-2 RECOMMENDED TEST EQUIPMENT . . . . . . . 4-3 4-3 TEST RECORDS .
Table of Contents (Continued) 4-12 AM CALIBRATION . . . . . . . . . . . . . . . . . 4-33 Equipment Setup . . . . . . . . . . . . . . . . 4-33 AM Calibration Procedure . . . . . . . . . . . 4-34 4-13 FM CALIBRATION . . . . . . . . . . . . . . . . . 4-37 Equipment Setup . . . . . . . . . . . . . . . . 4-37 FM Calibration Procedure . . . . . . . . . . . 4-38 4-14 PHASE MODULATION (FM) CALIBRATION . . . 4-51 Equipment Setup . . . . . . . . . . . . . . . . 4-51 FM Calibration Procedure . . . . . . . . . . .
Table of Contents (Continued) 6-5 REMOVING AND REPLACING THE A7 PCB. . . 6-10 Preliminary . . . . . . . . . . . . . . . . . . 6-10 Procedure . . . . . . . . . . . . . . . . . . . 6-10 6-6 REMOVING AND REPLACING THE A8, A9, A10, A11, OR A12 PCB. . . . . . . . . . . . . . . . . . 6-10 Preliminary . . . . . . . . . . . . . . . . . . 6-10 Procedure . . . . . . . . . . . . . . . . . . . 6-10 6-7 REMOVING AND REPLACING THE A13, A14, OR A15 PCB . . . . . . . . . . . . . . . . . . . . 6-11 Preliminary. . . . .
Chapter 1 General Information Table of Contents 1-1 SCOPE OF MANUAL . . . . . . . . . . . . . . . . . 1-3 1-2 INTRODUCTION . . . . . . . . . . . . . . . . . . . 1-3 1-3 DESCRIPTION . . . . . . . . . . . . . . . . . . . . 1-3 1-4 IDENTIFICATION NUMBER . . . . . . . . . . . . 1-5 1-5 ELECTRONIC MANUAL . . . . . . . . . . . . . . . 1-6 1-6 RELATED MANUALS . . . . . . Operation Manual . . . . . . . GPIB Programming Manual . . SCPI Programming Manual . . 1-7 OPTIONS . . . . . . . . . . . . . . . . .
Figure 1-1.
Chapter 1 General Information 1-1 SCOPE OF MANUAL This manual provides service information for all models of the Series 682XXB/683XXB Synthesized Signal Generators. The service information includes replaceable parts information, functional circuit descriptions, block diagrams, performance verification tests, and procedures for calibration, troubleshooting, and assembly/subassembly removal and replacement.
GENERAL INFORMATION 682XXB/683XXB MODELS Table 1-1. 1-4 Series 682XXB/683XXB Models (1 of 2) 68XXXB Model Frequency (GHz) Output Power Output Power w/Step Attenuator 68X37B 2.0 – 20.0 GHz +13.0 dBm +11.0 dBm 68X45B 0.5 – 20.0 GHz +13.0 dBm +11.0 dBm 68X47B 0.01 – 20.0 GHz +13.0 dBm +11.0 dBm 68X53B 2.0 – 20.0 GHz 20.0 – 26.5 GHz +9.0 dBm +6.0 dBm +7.0 dBm +3.5 dBm 68X55B 0.5 – 2.2 GHz 2.2 – 20.0 GHz 20.0 – 26.5 GHz +13.0 dBm +9.0 dBm +6.0 dBm +11.0 dBm +7.0 dBm +3.
GENERAL INFORMATION IDENTIFICATION NUMBER Table 1-1. Series 682XXB/683XXB Models (2 of 2) 68XXXB Model Frequency (GHz) Output Power Output Power w/Step Attenuator 68X97B 0.01 – 2.0 GHz 2.0 – 20.0 GHz 20.0 – 40.0 GHz 40.0 – 50.0 GHz 50.0 – 65.0 GHz +12.0 dBm +10.0 dBm +2.5 dBm 0.0 dBm –2.0 dBm Not Available With Option 15B (High Power) Installed 1-4 IDENTIFICATION NUMBER 682XXB/683XXB MM 68X37B 2.0 – 20.0 GHz +17.0 dBm +15.0 dBm 68X45B 0.5 – 2.2 GHz 2.2 – 20.0 GHz +13.0 dBm +17.
GENERAL INFORMATION ELECTRONIC MANUAL When ordering parts or corresponding with ANRITSU Customer Service, please use the correct serial number with reference to the specific instrument’s model number (i.e., Model 68347B Synthesized Signal Generator, Serial No. 403002). 1-5 ELECTRONIC MANUAL This manual is available on CD ROM as an Adobe Acrobat Portable Document Format (*.pdf) file. The file can be viewed using Acrobat Reader, a free program that is also included on the CD ROM.
GENERAL INFORMATION 1-7 OPTIONS OPTIONS The following instrument options are available. q q q q q q q q q q q q q 682XXB/683XXB MM Option 1, Rack Mounting. Rack mount kit containing a set of track slides (90° tilt capability), mounting ears, and front panel handles for mounting the instrument in a standard 19-inch equipment rack. Option 2A, 110 dB Step Attenuator. Adds a 10 dB per step attenuator with a 110 dB range for models having a high-end frequency of £26.5 GHz.
GENERAL INFORMATION LEVEL OF MAINTENANCE q q q q 1-8 LEVEL OF MAINTENANCE Option 18, mmWave Module Bias Output. Provides bias output for 54000-xWRxx Millimeter Wave Source Modules. BNC Twinax connector, rear panel. Option 19, SCPI Programmability. Adds GPIB command mnemonics complying with Standard Commands for Programmable Instruments (SCPI), Version 1993. SCPI programming complies with IEEE 488.2-1987. Option 20, SCAN Modulator.
GENERAL INFORMATION 1-9 PREVENTIVE MAINTENANCE PREVENTIVE MAINTENANCE The 682XXB/683XXB must always receive adequate ventilation. A blocked fan filter can cause the instrument to overheat and shut down. Check and clean the rear panel fan honeycomb filter periodically. Clean the fan honeycomb filter more frequently in dusty environments. Clean the filter as follows. Step 1 Remove the filter guard from the rear panel by pulling out on the four panel fasteners holding them in place (Figure 1-2).
GENERAL INFORMATION STATIC-SENSITIVE COMPONENT HANDLING PRECAUTIONS 1. Do not touch exposed contacts on any static sensitive component. 2. Do not slide static sensitive component across any surface. 3. Do not handle static sensitive components in areas where the floor or work surface covering is capable of generating a static charge. 4. Wear a static-discharge wristband when working with static sensitive components. 5. Label all static sensitive devices. 6.
GENERAL INFORMATION 1-11 STARTUP CONFIGURATIONS START UP CONFIGURATION The 682XXB/683XXB comes from the factory with a jumper across pins 2 and 3 of front panel connector J12 (Figure 1-4). In this configuration, connecting the instrument to line power automatically places it in operate mode (front panel OPERATE LED on). The startup configuration can be changed so that the signal generator comes up in standby mode (front panel STANDBY LED on) when it is connected to line power.
GENERAL INFORMATION 1-12 Table 1-2. RECOMMENDED TEST EQUIPMENT RECOMMENDED TEST EQUIPMENT Table 1-2 provides a list of recommended test equipment needed for the performance verification, calibration, and troubleshooting procedures presented in this manual. Recommended Test Equipment (1 of 3) INSTRUMENT CRITICAL SPECIFICATION RECOMMENDED MANUFACTURER/MODEL USAGE (1) Spectrum Analyzer, with External Mixers and Diplexer Assy Frequency Range: 0.
GENERAL INFORMATION Table 1-2.
GENERAL INFORMATION Table 1-2. EXCHANGE ASSEMBLY PROGRAM Recommended Test Equipment (3 of 3) CRITICAL SPECIFICATION INSTRUMENT RECOMMENDED MANUFACTURER/MODEL USAGE (1) Microwave (Pulse) Detector Output Polarity: Negative Frequency Range: 0.
GENERAL INFORMATION PARTS LIST Table 1-3.
GENERAL INFORMATION PARTS LIST Table 1-3. Replaceable Subassemblies and RF Components (2 of 2) SUBASSEMBLY OR PART NAME ANRITSU PART NUMBER RF Components YIG-Tuned Oscillator, 2 to 20 GHz Down Converter Pulsed Digital Down Converter Switched Doubler Module, 20 to 26.
GENERAL INFORMATION PARTS LIST Table 1-4. Common Replaceable Subassemblies and Parts (2 of 2) SUBASSEMBLY OR PART NAME ANRITSU PART NUMBER Fan Assembly Fan Mount Fan Membrane (Honey Comb Filter) Fan Grill Fasteners (for Fan Grill) A40513 790-425 C37137 790-426 790-433 Fuse, 5A, 3AG Slow Blow (110 Vac) Fuse, 2.
GENERAL INFORMATION Table 1-5. ANRITSU SERVICE CENTERS ANRITSU Service Centers UNITED STATES FRANCE JAPAN ANRITSU COMPANY 490 Jarvis Drive Morgan Hill, CA 95037-2809 Telephone: (408) 776-8300 1-800-ANRITSU FAX: 408-776-1744 ANRITSU S.A 9 Avenue du Quebec Zone de Courtaboeuf 91951 Les Ulis Cedex Telephone: 016-09-21-550 FAX: 016-44-61-065 ANRITSU CUSTOMER SERVICE LTD. 1800 Onna Atsugi-shi Kanagawa-Prf.
Chapter 2 Functional Description Table of Contents 2-1 INTRODUCTION . . . . . . . . . . . . . . . . . . . 2-3 2-2 682XXB/683XXB MAJOR SUBSYSTEMS Digital Control. . . . . . . . . . . . . Front Panel . . . . . . . . . . . . . . Frequency Synthesis . . . . . . . . . . Analog Instruction . . . . . . . . . . . YIG Driver . . . . . . . . . . . . . . Function Generator . . . . . . . . . . ALC/AM/Pulse Modulation . . . . . . . RF Deck . . . . . . . . . . . . . . . . Power Supply . . . . . . . . . . . . .
Table of Contents (Continued) 0.01 to 2 GHz Down Converter . . . . 0.5 to 2.2 GHz Digital Down Converter Switched Doubler Module . . . . . . . Source Quadrupler Module . . . . . . Power Level Detection/ALC Loop . . . Step Attenuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2 Functional Description 2-1 2-2 INTRODUCTION This chapter provides brief functional descriptions of the major subsystems that are contained in each model of the Series 682XXB/ 683XXB Synthesized Signal Generators. In addition, the operation of the frequency synthesis, automatic level control (ALC), and RF deck subsystems is described so that the reader may better understand the overall operation of the instrument. Block diagrams are included to supplement the written descriptions.
FUNCTIONAL DESCRIPTION 682XXB/683XXB MAJOR SUBSYSTEMS The CPU is indirectly linked via the A16 CPU Interface PCB to the A3 Reference Loop PCB, the A4 Coarse Loop PCB, the A5 Fine Loop PCB, and the A6 Pulse Generator PCB. The A16 PCB contains circuitry to perform parallel-to-serial and serial-toparallel data conversion. It also contains circuitry for many of the rear panel signals, a 13-bit resolution DVM, and decoder circuitry for the front panel rotary data knob optical encoder.
FUNCTIONAL DESCRIPTION 682XXB/683XXB MAJOR SUBSYSTEMS used to fine tune and phase lock the YIG-tuned oscillator. The A11 PCB also contains circuitry for frequency modulation of the YIG-tuned oscillator RF output. The CPU sends control data to the A3 Reference Loop PCB, the A4 Coarse Loop PCB, and the A5 Fine Loop PCB via the A16 PCB as serial data words. The CPU controls the A11 FM PCB via the dedicated data and address bus.
FUNCTIONAL DESCRIPTION Rear Panel Front Panel Connectors Inputs AM IN To A10 ALC PCB (Via A20 Motherboard) FM IN To A11 FM PCB From RF Deck (Option 9) To A6 Pulse Generator PCB From A3 Reference Loop IN 682XXB/683XXB MAJOR SUBSYSTEMS EXT ALC IN To A10 ALC PCB (Via A20 Motherboard) RF OUTPUT From RF Deck Power Input Outputs To A3 Reference Loop 10 MHz REF IN RF OUTPUT A 10 MHZ REF OUT FM IN 110/220 VAC To A11 FM PCB Power Supply LCD AM IN AM OUT EXT ALC IN FM OUT DWELL IN V/GH
FUNCTIONAL DESCRIPTION 682XXB/683XXB MAJOR SUBSYSTEMS Serial Data Serial Data Serial Data 10 MHz REF OUT Real Panel BNC 10 MHz 500 MHz A3 Reference Loop 10 MHz A4 Coarse Loop 500 MHz (To Down Converter) 26 MHz (To A8) 219.5 - 245 MHz Frequency Synthesis 10 MHz REF IN Rear Panel BNC 10 MHz (To A6) A5 Fine Loop A7 YIG Loop 21.
FUNCTIONAL DESCRIPTION 682XXB/683XXB MAJOR SUBSYSTEMS ALC/AM/Pulse Modulation This circuit subsystem consists of the A6 Pulse Generator PCB, the A9 PIN Control PCB, the A10 ALC PCB, and the A14 SDM, SQM Driver PCB. It provides the following: q q q q q Level control of the RF output power. AM and pulse modulation of the RF output. Current drive signals to the PIN switches located in the Switched Filter assembly and Switched Doubler Module (SDM).
FUNCTIONAL DESCRIPTION FREQUENCY SYNTHESIS inputs are coupled directly via coaxial cables to their destination PCBs—the FM input to A11 FM PCB and the Pulse/Trigger input to the A6 Pulse Generator PCB. NOTE When Option 6 (phase modulation) is installed, the front panel and rear panel FM IN connectors also serve as the FM IN connectors.
FUNCTIONAL DESCRIPTION FREQUENCY SYNTHESIS signal that (depending on polarity) causes the VCO frequency to increase or decrease to reduce any phase difference. When the two inputs match, the loop is said to be locked. The variable input from the VCO then equals the reference input in phase, frequency, accuracy, and stability. In practical applications a frequency divider is placed between the output of the variable oscillator and the variable input to the phase-lock loop.
FUNCTIONAL DESCRIPTION FREQUENCY SYNTHESIS A4 Coarse Loop A3 Reference Loop ÷10 10 MHz REF In Phase/ Frequency Detector 10 MHz 10 MHz ÷10 10 MHz Hi-Stability XTAL Oscillator (Optional) 100 MHz Reference Oscillator 500 MHz x5 206 - 391 MHz VCO 100 kHz 1 MHz Phase Error Coarse Loop Oscillator ÷2 219.
FUNCTIONAL DESCRIPTION FREQUENCY SYNTHESIS output signal sample with the adjacent coarse-loop harmonic produces a low frequency difference signal that is the YIG IF signal (21.5 to 40 MHz). Table 2-1. RF Output and Loop Frequencies RF OUTPUT/LOOP FREQUENCIES (in MHz) RF OUT COARSE LOOP FINE LOOP 2000 219.5 24.5 3000 229 23 4000 234 22 5000 237 23 6000 239 25 7000 240.5 25.5 8000 241.5 30.5 9000 242.5 27.5 10000 243 37 11000 238.5 29 12000 239.
FUNCTIONAL DESCRIPTION FREQUENCY SYNTHESIS requiring even greater stability, the 100 MHz reference oscillator can be phase locked to an optional 10 MHz reference (internal or external). RF Outputs 0.01 to 65 GHz Refer to the RF Deck block diagram shown in Figure 2-1 (page 2-7) for the following description. The 682XXB/683XXB uses one 2 to 20 GHz YIG-tuned oscillator. All other frequencies output by the signal generator are derived from the fundamental frequencies generated by this YIG-tuned oscillator.
FUNCTIONAL DESCRIPTION NOTE For 683X5B models at frequencies of £2.2 GHz, broad-band analog frequency sweeps are >25 MHz wide; narrow-band analog frequency sweeps are £25 MHz. 2-14 FREQUENCY SYNTHESIS Frequency Modulation Frequency modulation (FM) of the YIG-tuned oscillator RF output is achieved by summing an external or internal modulating signal into the FM control path of the YIG loop. Refer to Figures 2-1 and 2-2.
FUNCTIONAL DESCRIPTION ALC/AM/PULSE MODULATION Step Sweep Mode 2-4 ALC/AM/PULSE MODULATION Step (digital) frequency sweeps of the YIG-tuned oscillator RF output consist of a series of discrete, synthesized steps between a start and stop frequency. Each frequency step is generated by applying the tuning signal (from the A12 Analog Instruction PCB) to the YIG-tuned oscillator’s main tuning coil, then phase-locking the RF output. Every frequency step in the sweep range is phase-locked.
FUNCTIONAL DESCRIPTION ALC/AM/PULSE MODULATION NOTE The instrument uses two internal level detection circuits. For frequencies <2 GHz (£2.2 GHz for 682X5B/683X5B models), the level detector is part of the Down Converter. The signal from this detector is routed to the A10 ALC PCB as the Detector 0 input. For frequencies ³2 GHz (>2.2 GHz for 682X5B/683X5B models), the level detector is part of the main Directional Coupler. The signal from this detector is routed to the A10 ALC PCB as the Detector 1 input.
FUNCTIONAL DESCRIPTION ALC/AM/PULSE MODULATION P/O RF Deck P/O A10 PCB External AM (From Front / Rear Panel) AM INPUT SENS DAC AM CAL DAC LOG AMP 10 - 16.25 GHz Switched Filter Internal AM (From A8 PCB) 0.01 - 20 GHz 0.01 - 2 GHz Down Converter SLOPE DAC 40 65 GHz Forward Coupler Switched Doubler Module 2 - 20 GHz YIG Oscillator ALC Slope (From A12 PCB) Source Quadrupler Module 0.01 65 GHz To Step Attenuator or RF Output Level Detector Detector 1 0.
FUNCTIONAL DESCRIPTION ALC/AM/PULSE MODULATION Power Sweep In this mode, the CPU has the ALC step the RF output through a range of levels specified by the user. This feature can be used in conjunction with the sweep mode to produce a set of identical frequency sweeps, each with a different RF power output level. Amplitude Modulation Amplitude modulation (AM) of the RF output signal is accomplished by summing an external or internal modulating signal into the ALC loop.
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES struments to the internally generated pulse; the video pulse is a TTL level copy of the RF output pulse; and the sample/hold signal synchronizes the ALC loop to the ON portion of the pulse modulating waveform. The 682XXB/683XXB has five pulse modulation modes: q Internal pulse modulation mode – The pulse modulation waveform is generated and timed internally.
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES RF Deck Configurations All 682XXB/683XXB RF deck assemblies contain a 2 to 20 GHz YIG-tuned oscillator, a switched filter assembly, and a directional coupler. Beyond that, the configuration of the RF deck assembly varies according to the particular instrument model.
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES RF Path for 20 GHz Models Switched Doubler Module - ND40843 (26.5 GHz Models) x2 20 - 26.5 GHz >+8.5 dBm 20 - 26.5 GHz BPF J1 J2 Bias Switched Doubler Module - D28535 (40 GHz Models) Switched Filter Assy. - D25015 (Standard) - D26350 (Option 15B) 2-20 GHz YIG Oscillator 20 - 25 GHz BPF 3.3 GHz LPF BIAS MAIN 8.4-20 GHz >+4dBm Modulator J6 >+15 dBm (Std.) 5.5 GHz LPF J1 8.5 GHz LPF 2-8.4 GHz J5 x2 32 - 40 GHz BPF J2 >+20 dBm (Opt.
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES S o u r c e Q u a d r u p le r M o d u le À 1 6 .8 G H z L P F & 6 d B P A D Â J 1 B P F x 4 (J 1 ) B ia s M A IN 8 .4 -2 0 G H z J 6 8 .5 G H z L P F F M 2 -8 .4 G H z J 5 J 7 2 0 - 2 5 G H z B P F 5 .5 G H z L P F > + 2 0 d B m 8 .4 G H z L P F 2 0 G H z L P F x 2 J 2 3 2 - 4 0 G H z B P F J 1 B ia s J 1 > + 1 7 d B m J 2 0 .0 1 - 4 0 G H z > + 1 0 d B m À S w itc h C o n tro l Á 0 .
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES When the 683XXB is generating broad-band analog frequency sweeps (>100 MHz wide), the main tuning coil current tunes the oscillator through the sweep frequency range. Phase locking to fine adjust the oscillator’s output frequency is only done at the bottom and top of the sweep ramp and on both sides of each band switch point.
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES coupler in the switched filter path of high power switched filter assemblies provides the RF signal for the source quadrupler module (refer to Figure 2-5). Whenever an instrument is generating RF signals of >40 GHz, a RF signal is coupled out via J4 to the source quadrupler module. The switched low-pass filters provide rejection of the harmonics that are generated by the YIG-tuned oscillator. The 2 to 20 GHz (>2.
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES amplified, and coupled out for use in internal leveling. The detected RF sample is routed to the A10 ALC PCB. The 0.01 to 2 GHz RF output from the down converter goes to input connector J1 of the switched filter assembly. There, the 0.01 to 2 GHz RF signal is multiplexed into the switched filter’s output path. 0.5 to 2.2 GHz Digital Down Converter The 0.5 to 2.
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES ters. PIN switch drive current is generated by internal drivers that are controlled by signals received from the A12 Analog Instruction PCB. The switched low-pass filters provide rejection of unwanted harmonics. The 0.5 to 2.2 GHz RF signal has four filtering paths—700 MHz, 1000 MHz, 1400 MHz, and 2200 MHz. After routing through the appropriate filter path, the 0.5 to 2.2 GHz RF signal goes to connector J2.
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES RF Path for 20 GHz Models Switched Doubler Module - ND40843 (26.5 GHz Models) x2 20 - 26.5 GHz >+8.5 dBm 20 - 26.5 GHz BPF J1 J2 Bias 20 - 25 GHz BPF 3.3 GHz LPF BIAS MAIN 8.4-20 GHz >+4dBm Modulator J6 8.5 GHz LPF FM 2-8.4 GHz J5 J7 20 - 40 GHz >+8.5 dBm Switched Doubler Module - D28535 (40 GHz Models) Switched Filter Assy. - D25015 (Standard) - D26350 (Option 15B) 2-20 GHz YIG Oscillator Switch Control 5.5 GHz LPF >+15 dBm (Std.) 8.
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES S o u r c e Q u a d r u p le r M o d u le À 1 6 .8 G H z L P F & 6 d B P A D Â B P F x 4 J 1 (J 1 ) B ia s J 4 2 -2 0 G H z Y IG O s c illa to r 8 .4 -2 0 G H z J 6 8 .5 G H z L P F F M 2 -8 .4 G H z J 5 J 7 D ir e c tio n a l C o u p le r J 3 2 0 - 2 5 G H z B P F 5 .5 G H z L P F > + 2 0 d B m 8 .4 G H z L P F 2 0 G H z L P F x 2 J 2 L e v e l C o n tro l 2 5 - 3 2 G H z B P F 3 2 - 4 0 G H z B P F J 1 J 2 0 .
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES RF signal is amplified, then doubled in frequency. From the doubler, the 20 to 40 GHz RF signal is routed by PIN switches to the bandpass filters. There are three bandpass filter paths to provide good harmonic performance. The frequency ranges of the three paths are 20 to 25 GHz, 25 to 32 GHz, and 32 to 40 GHz.
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES 60 GHz RF signal goes via a band-pass filter to the output connector of the SQM. From the SQM, the 40 to 60 GHz RF output signal goes to input connector J1 of the forward coupler, P/N C27184. The other input to the forward coupler at connector J2 is the 0.01 to 40 GHz (0.5 to 40 GHz for 682X5B/683X5B models) RF output signals from the SDM. From forward coupler output connector J3, the 0.01 to 60 GHz (0.
FUNCTIONAL DESCRIPTION RF DECK ASSEMBLIES (for 682X5B/683X5B models) to adjust the RF output power level. Step Attenuator 682XXB/683XXB MM The optional step attenuator provides up to 110 dB (90 dB for 50 GHz and 60 GHz models) attenuation of the RF output in 10 dB steps. The step attenuator drive current is supplied by the A9 PIN Control PCB.
Chapter 3 Performance Verification Table of Contents 3-1 INTRODUCTION . . . . . . . . . . . . . . . . . . . 3-3 3-2 RECOMMENDED TEST EQUIPMENT . . . . . . . 3-3 3-3 TEST RECORDS . . . . . . . . . . . . . . . . . . . 3-3 3-4 CONNECTOR AND KEY LABEL NOTATION . . . 3-3 3-5 682XXB/683XXB POWER LEVELS . . . . . . . . . 3-6 3-6 INTERNAL TIME BASE AGING RATE TEST . . . 3-8 Test Setup . . . . . . . . . . . . . . . . . . . . 3-9 Test Procedure. . . . . . . . . . . . . . . . . . 3-9 EXAMPLE: . . . . . . .
Table of Contents (Continued) 3-11 POWER LEVEL TESTS . . . . . . . . . Test Setup . . . . . . . . . . . . . . Power Level Accuracy Test Procedure . Power Level Flatness Test Procedure . 3-12 AMPLITUDE MODULATION TEST . . . . . . . . 3-30 Test Setup . . . . . . . . . . . . . . . . . . . 3-30 AM Input Sensitivity Procedure. . . . . . . . . 3-31 3-13 FREQUENCY MODULATION TESTS . . . . . . . 3-33 Test Setup . . . . . . . . . . . . . . . . . . . 3-33 FM Input Sensitivity Procedure . . . . . . . . .
Chapter 3 Performance Verification 3-1 3-2 INTRODUCTION This chapter contains tests that can be used to verify the performance of the Series 682XXB/683XXB Synthesized Signal Generators to specifications. These tests support all instrument models having any version of firmware. Units with Option 2A, 2B, 2C, or 2D (110 dB or 90 dB step attenuators), Option 11 (0.1 Hz frequency resolution), and Option 15B (high power output) are also covered.
PERFORMANCE VERIFICATION Table 3-1. RECOMMENDED TEST EQUIPMENT Recommended Test Equipment for Performance Verification Tests (1 of 2) INSTRUMENT CRITCAL SPECIFICATION RECOMMENDED MANUFACTURER/MODEL TEST NUMBER Spectrum Analyzer, with External Mixers and Diplexer Assy Frequency Resolution: 0.01 to 65 GHz Resolution Bandwidth: 10 Hz Tektronix, Model 2794, with External Mixers: WM780K (18 to 26.5 GHz) WM780A (26.
PERFORMANCE VERIFICATION Table 3-1.
PERFORMANCE VERIFICATION 3-5 682XXB/683XXB POWER LEVELS 682XXB/683XXB POWER LEVELS Table 3-2 is a listing of the Series 682XXB and 683XXB Synthesized Signal Generator models and their maximum leveled ouput power levels. Certain test procedures will refer you to this table for the maximum leveled output power level setting of the instrument model being tested. Table 3-2.
PERFORMANCE VERIFICATION 682XXB/683XXB POWER LEVELS Table 3-2. 682XXB/683XXB Maximum Leveled Output Power (2 of 2) 68XXXB Model Frequency (GHz) Max Leveled Output Power Max Leveled Output Power w/Step Attenuator 68X95B 0.5 – 2.2 GHz 2.2 – 20.0 GHz 20.0 – 40.0 GHz 40.0 – 50.0 GHz 50.0 – 65.0 GH +11.0 dBm +10.0 dBm +2.5 dBm 0.0 dBm –2.0 dBm Not Available 68X97B 0.01 – 2.0 GHz 2.0 – 20.0 GHz 20.0 – 40.0 GHz 40.0 – 50.0 GHz 50.0 – 65.0 GHz +12.0 dBm +10.0 dBm +2.5 dBm 0.0 dBm –2.
PERFORMANCE VERIFICATION 3-6 INTERNAL TIME BASE AGING RATE TEST INTERNAL TIME BASE AGING RATE TEST (Optional) The following test can be used to verify that the 682XXB/683XXB 10 MHz time base is within its aging specification. The instrument derives its frequency accuracy from an internal 100 MHz crystal oscillator standard. (With Option 16 installed, frequency accuracy is derived from an internal high-stability 10 MHz crystal oscillator.
PERFORMANCE VERIFICATION INTERNAL TIME BASE AGING RATE TEST Test Procedure The frequency error is measured at the start and finish of the test time period of 24 hours. The aging rate is the difference between the two error readings. 1. Set up the Frequency Reference as follows: a. Press the ESC key until the MAIN MENU is displayed. b. At the MAIN MENU display, press 1 to select CONFIGURATION. c. At the CONFIGURATION MENU display, press 8 to select MEAS. d.
PERFORMANCE VERIFICATION INTERNAL TIME BASE AGING RATE TEST 4. Record the frequency error value, displayed on the Frequency Reference, on the Test Record. 5. Wait for 24 hours, then record the current frequency error value on the Test Record. 6. The aging rate is the difference between the two frequency error values. 7. Record the computed result on the Test Record. To meet the specification, the computed aging rate must be <2 ´ 10–8 per day (<5 ´ 10–10 per day with Option 16).
PERFORMANCE VERIFICATION 3-7 FREQUENCY SYNTHESIS TESTS FREQUENCY SYNTHESIS TESTS The following tests can be used to verify correct operation of the frequency synthesis circuits. Frequency synthesis testing is divided into two parts—coarse loop/YIG loop tests and fine loop tests. 682XXB/683XXB FREQUENCY COUNTER 10 MHz REF OUT 10 MHz EXT IN Band 3 Band 4 Input Input Connection B Band 2 Input RF IN RF OUT (26.5 to 60 GHz) Connection A Figure 3-2. Mixer (0.01 to 26.
PERFORMANCE VERIFICATION FREQUENCY SYNTHESIS TESTS Coarse Loop/ YIG Loop Test Procedure The following procedure tests both the coarse loop and YIG loop by stepping the signal generator through its full frequency range in 1 GHz steps and measuring the RF output at each step. 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset, the CW Menu is displayed. b. Press Edit F1 to open the current frequency parameter for editing. c.
PERFORMANCE VERIFICATION FREQUENCY SYNTHESIS TESTS Fine Loop Test Procedure The following procedure tests the fine loop by stepping the instrument through ten 1 kHz steps (ten 100 Hz steps for instruments with Option 11) and measuring the RF output at each step. 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset, the CW Menu is displayed. b. Press Edit F1 to open the current frequency parameter for editing. c.
PERFORMANCE VERIFICATION 3-8 SPURIOUS SIGNALS TEST: RF OUTPUT SIGNALS £2 GHz (£2.2 GHz for 68XX5B MODELS) SPURIOUS SIGNALS TEST: RF OUTPUT SIGNALS £2 GHz (£2.2 GHz for 68XX5B MODELS) The following test can be used to verify that the signal generator meets its spurious signals specifications for RF output signals from 0.01 to 2 GHz (0.5 to 2.2 GHz for 682X5B/683X5B Models). This test is applicable only to instruments which cover the frequency range 10 MHz to 2 GHz (500 MHz to 2.
PERFORMANCE VERIFICATION SPURIOUS SIGNALS TEST: RF OUTPUT SIGNALS £2 GHz (£2.2 GHz for 68XX5B MODELS) 2. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset the CW Menu is displayed. b. Press Edit L1 to open the current power level parameter for editing. c. Set L1 to the lesser of +10 dBm or the maximum leveled power level for the instrument being tested (refer to Table 3-2, page 3-6). Table 3-3.
PERFORMANCE VERIFICATION SPURIOUS SIGNALS TEST: RF OUTPUT SIGNALS £2 GHz (£2.2 GHz for 68XX5B MODELS) presence by entering their levels on the Test Record. 9. Set F1 to 1.6 GHz. Measure the worst case nonharmonic signal for the 1.6 GHz carrier and record its presence by entering its level on the Test Record. 10. Change the Spectrum Analyzer setup as follows: a. Span: 10 MHz/div b. CF: 1.6 GHz c. RBW: 1 MHz 11.
PERFORMANCE VERIFICATION SPURIOUS SIGNALS TEST: RF OUTPUT SIGNALS £2 GHz (£2.2 GHz for 68XX5B MODELS) 0.5 - 2.2 GHz Test Procedure The following procedure lets you measure the 0.5 to 2.2 GHz RF output harmonic levels to verify that they meet specifications. 1. Set up the 682X5B/683X5B as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset the CW Menu is displayed. b. Press Edit L1 to open the current power level parameter for editing. c.
PERFORMANCE VERIFICATION 3-9 HARMONIC TEST: RF OUTPUT SIGNALS FROM 2 TO 20 GHz The following test can be used to verify that the 682XXB/683XXB meets its harmonic specifications for RF output signals from 2 to 20 GHz (2.2 to 20 GHz for 68XX5B Models). Test record entries are supplied for harmonics up to a frequency limit of 40 GHz. Additional harmonic checks may be made at any frequency of interest up to the RF output frequency limit of the 682XXB/683XXB model being tested.
PERFORMANCE VERIFICATION HARMONIC TEST: RF OUTPUT SIGNALS FROM 2 TO 20 GHz Test Procedure (2 to 10 GHz) The following procedure lets you measure the 2 to 10 GHz (2.2 to 10 GHz for 68XX5Bs) RF output harmonic levels to verify that they meet specifications. 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset the CW Menu is displayed. Table 3-4. Spurious Signals Specifications Harmonic and Harmonic Related: 500 MHz to £2.
PERFORMANCE VERIFICATION HARMONIC TEST: RF OUTPUT SIGNALS FROM 2 TO 20 GHz Test Procedure (11 to 20 GHz) The following procedure lets you measure the 11 to 20 GHz RF output harmonic levels to verify that they meet specifications.
PERFORMANCE VERIFICATION HARMONIC TEST: RF OUTPUT SIGNALS FROM 2 TO 20 GHz slightly to accomplish this; however, do not exceed –-20 dBm output power. 4. Remove Connection A and connect the 682XXB/ 683XXB RF OUTPUT to the waveguide mixer input of the Spectrum Analyzer as shown in Connection B. 5. On the 682XXB/683XXB, remove 30 dB of attenuation from the RF output. Do this by either increasing the output power level by 30 dB or by removing the 30 dB attenuator installed in step 1.e. 6.
PERFORMANCE VERIFICATION 3-10 SINGLE SIDEBAND PHASE NOISE TEST SINGLE SIDEBAND PHASE NOISE TEST The following test can be used to verify that the signal generator meets its single sideband phase noise specifications. For this test, a second 682XXB/683XXB is required. This additional instrument acts as a local oscillator (LO). The CW RF output of the 682XXB/683XXB under test (DUT) is mixed with the CW RF output from the 682XXB/ 683XXB LO which is offset by 1 MHz.
PERFORMANCE VERIFICATION SINGLE SIDEBAND PHASE NOISE TEST Test Procedure The following procedure lets you measure the RF output single sideband phase noise levels to verify that they meet specifications. NOTE The following technique is a measurement of phase noise and AM noise. To avoid erroneous results, on the 682XXB/683XXB DUT set L1 for maximum leveled output power and select External Detector leveling. This will prevent any AM noise from degrading the phase noise measurements. 1.
PERFORMANCE VERIFICATION SINGLE SIDEBAND PHASE NOISE TEST NOTE If the 682XXB/683XXB LO output is less than 10 dBm, the Mixer’s local oscillator port will not be saturated and the resulting measurements may be in error. Table 3-5. Single Sideband Phase Noise Test Specification CW Carrier Frequency Offset From Test Carrier Specification* 3. Set up the Spectrum Analyzer as follows: a. Center Frequency: 1 MHz b. Frequency Span: 300 Hz c. RBW: 3 Hz 0.
PERFORMANCE VERIFICATION SINGLE SIDEBAND PHASE NOISE TEST 9. On the Spectrum Analyzer: a. Deselect NOISE LVL. b. Set Frequency Span to 300 kHz. c. Adjust the Marker for a 100 kHz offset. d. Select NOISE LVL. 10. Measure the phase noise level 100 kHz offset from the carrier frequency. Record the level on the Test Record. 11. Repeat steps 1 through 10 for all frequencies listed on the Test Record.
PERFORMANCE VERIFICATION 3-11 POWER LEVEL ACCURACY AND FLATNESS TESTS POWER LEVEL ACCURACY AND FLATNESS TESTS The following tests can be used to verify that the 682XXB/683XXB meets its power level specifications. Power level verification testing is divided into two parts—power level accuracy tests and power level flatness tests. 682XXB / 683XXB OSCILLOSCOPE HORIZ OUT CH 1 or X Input RF OUT POWER METER Power Sensor Figure 3-6.
PERFORMANCE VERIFICATION POWER LEVEL ACCURACY AND FLATNESS TESTS Power Level Accuracy Test Procedure Power level accuracy is tested by stepping the output power level down in 1 dB increments from its maximum rated power level and measuring the output power level at each step. 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset, the CW Menu is displayed. b. Press Edit F1 to open the current frequency parameter for editing. c.
PERFORMANCE VERIFICATION POWER LEVEL ACCURACY AND FLATNESS TESTS c. With the Step Sweep Menu displayed, press the main menu key FREQUENCY CONTROL The Sweep Frequency Control Menu is then displayed. d. Press Full to select a full range frequency sweep. e. Press Edit L1 to open the current power level parameter for editing. f. Set L1 to the power level indicated on the test record. g. Now, return to the Step Sweep Menu by pressing the main menu key CW/SWEEP SELECT h.
PERFORMANCE VERIFICATION POWER LEVEL ACCURACY AND FLATNESS TESTS 3. Set up the 683XXB as follows for an analog sweep power level flatness test: a. Reset the instrument by pressing SYSTEM , then Reset . The CW Menu is displayed. b. Press Analog to place the 683XXB in the analog sweep frequency mode and display the Analog Sweep Menu. c. With the Analog Sweep Menu displayed, press the main menu key FREQUENCY CONTROL The Sweep Frequency Control Menu is then displayed. d.
PERFORMANCE VERIFICATION 3-12 AMPLITUDE MODULATION TEST AMPLITUDE MODULATION TEST This procedure verifies the operation of the 682XXB/683XXB amplitude modulation input sensitivity circuit. The RF OUTPUT of the 682XXB/683XXB is monitored on a Spectrum Analyzer display. The (modulated) IF Output of the Spectrum Analyzer is monitored with a Modulation Analyzer. A 50% AM (default value) signal is set to a reference point on the Spectrum Analyzer.
PERFORMANCE VERIFICATION AMPLITUDE MODULATION TEST AM Input Sensitivity Procedure The following procedure lets you measure the absolute peak AM values for a 50% AM signal and calculate the actual modulation value. 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset, the CW Menu is displayed. b. Press Edit F1 to open the current frequency parameter for editing. c. Set F1 to 5.0 GHz. d.
PERFORMANCE VERIFICATION AMPLITUDE MODULATION TEST 8. Compute the actual AM input sensitivity with the following formula: é |AM PK ( + )|+ |AM PK (–)| ù % AM = 100 ´ ê ú ë 200 + |AM PK ( + )|- |AM PK (–)|û 9. The calculated result should be between 45% and 55% AM. Record this result in the Test Record.
PERFORMANCE VERIFICATION 3-13 FREQUENCY MODULATION TESTS FREQUENCY MODULATION TESTS This procedure verifies the operation of the 682XXB/683XXB frequency modulation input sensitivity circuitry. The RF OUTPUT of the 682XXB/683XXB is monitored on a Spectrum Analyzer display. In Unlocked Wide FM mode, the Spectrum Analyzer is used as a frequency counter to measure the actual FM deviation and determine FM accuracy.
PERFORMANCE VERIFICATION FREQUENCY MODULATION TESTS Unlocked Wide FM Mode 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset, the CW Menu is displayed. b. Press Edit F1 to open the current frequency parameter for editing. c. Set F1 to 5.0 GHz. 2. Set up the Spectrum Analyzer as follows: a. CF: 5.0 GHz b. Span/Div: 50 MHz (500 MHz across the display) 3. On the 682XXB/683XXB, make the following settings: a. Press MODULATION , then FM .
PERFORMANCE VERIFICATION FREQUENCY MODULATION TESTS 5. The difference between these two frequencies is the actual peak-to-peak frequency deviation. It should be between 190 MHz and 210 MHz. Record the difference on the Test Record. Unlocked Narrow FM Mode 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset, the CW Menu is displayed. b. Press Edit F1 to open the current frequency parameter for editing. c. Set F1 to 5.0 GHz. 2.
PERFORMANCE VERIFICATION FREQUENCY MODULATION TESTS 7. Compute the FM accuracy with the following formula: æ FM Deviation ( in kHz ) ö ÷ ´ 100 Accuracy ( in %) = ç è ø 240 8. The calculated result should be between 93.7% and 106.3%. Record this result on the Test Record. Locked FM Mode 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset, the CW Menu is displayed. b. Press Edit F1 to open the current frequency parameter for editing. c. Set F1 to 5.
PERFORMANCE VERIFICATION FREQUENCY MODULATION TESTS 6. Compute the FM accuracy with the following formula: æ FM Deviation ( in kHz ) ö ÷ ´ 100 Accuracy ( in %) = ç è ø 240 7. The calculated result should be between 93.7% and 106.3%. Record this result on the Test Record. Locked Low-Noise FM Mode 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset, the CW Menu is displayed. b. Press Edit F1 to open the current frequency parameter for editing. c.
PERFORMANCE VERIFICATION FREQUENCY MODULATION TESTS 6. Compute the FM accuracy with the following formula: æ FM Deviation ( in kHz ) ö ÷ ´ 100 Accuracy ( in %) = ç è ø 240 7. The calculated result should be between 93.7% and 106.3%. Record this result on the Test Record.
PERFORMANCE VERIFICATION 3-14 PULSE MODULATION TESTS: RISE TIME, FALL TIME, OVERSHOOT, AND LEVEL Pulse modulation tests verify correct operation as well as rise time, fall time, overshoot, and level. The pulse leveling accuracy test compares the pulsed RF output level to verify the performance of the level detector(s), detector amplifiers, and ALC sample/ hold circuits.
PERFORMANCE VERIFICATION PULSE MODULATION TESTS: RISE TIME, FALL TIME, OVERSHOOT, AND LEVEL Rise/Fall Time and Overshoot The following procedure lets you measure the rise time, fall time, and overshoot parameters of the pulse modulation waveform. 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset, the CW Menu is displayed. b. Press Edit F1 to open the current frequency parameter for editing. c. Set F1 to 5.0 GHz. d.
PERFORMANCE VERIFICATION PULSE MODULATION TESTS: RISE TIME, FALL TIME, OVERSHOOT, AND LEVEL PULSE DETECTOR OUTPUT WAVEFORM Percentage of Detected Waveform TRISE TFALL Corresponding Percentage of RF Voltage 0% 2% 0% 10% 36% 50% 86% 90% 100% 100% 114% 114% 0% 10% OVERSHOOT Note: Waveform shown is for a negative output detector. PULSE WIDTH Figure 3-11.
PERFORMANCE VERIFICATION PULSE MODULATION TESTS: RISE TIME, FALL TIME, OVERSHOOT, AND LEVEL 3. On the 682XXB/683XXB: a. Press MODULATION , then Pulse to go to the Internal Pulse Status Menu display. b. Press Edit Width and set W1 to the pulse width noted in the Test Record. c. Press On/Off to turn on pulse modulation. 4. On the Oscilloscope, observe that the nominal level of the displayed pulse peak has shifted vertically, slightly off of the centerline.
PERFORMANCE VERIFICATION 3-15 PULSE MODULATION TEST: VIDEO FEEDTHROUGH PULSE MODULATION TEST: VIDEO FEEDTHROUGH This pulse modulation test verifies that video feedthrough is within specifications. 682XXB / 683XXB Pulse Sync Out Oscilloscope 450 MHz Low Pass Filter (For Video Feedthrough Measurement) Figure 3-12. CH. 1 Input CH. 4 Trigger Equipment Setup for Pulse Modulation Test: Video Feedthrough Test Setup Connect the equipment, shown in Figure 3-12, as follows: 1.
PERFORMANCE VERIFICATION PULSE MODULATION TEST: VIDEO FEEDTHROUGH Test Procedure The following procedure lets you measure the video feedthrough that occurs during pulse modulation. 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset, the CW Menu is displayed. b. Press Edit F1 to open the current frequency parameter for editing. c. Set F1 to 5.0 GHz. d. Press Edit L1 to open the current power level parameter for editing. e.
PERFORMANCE VERIFICATION 3-16 PULSE MODULATION TEST: RF ON/OFF RATIO PULSE MODULATION TEST: RF ON/OFF RATIO This pulse modulation test verifies that the ratio of RF on power to RF off power is within specifications. 682XXB / 683XXB Spectrum Analyzer EXT REF INPUT 10 MHz REF OUT RF IN RF OUT Figure 3-13. Equipment Setup for Pulse Modulation Test: RF On/Off Ratio Test Setup Connect the equipment, shown in Figure 3-13, as follows: 1.
PERFORMANCE VERIFICATION PULSE MODULATION TEST: RF ON/OFF RATIO e. Press More to go to the additional Internal Pulse Status Menu display. g. Press Internal/External to select the external source for the modulation signal. The External Pulse Status Menu is displayed. h. Press Front/Rear to select the rear panel PULSE TRIGGER IN connector. i. Press On/Off to turn pulse modulation on. 2. Set up the Spectrum Analyzer as follows: a. CF: Same as the 682XXB/683XXB CW frequency noted in step 1.c. b.
PERFORMANCE VERIFICATION PULSE MODULATION TEST: RF ON/OFF RATIO 7. Repeat steps 1 through 6 for any other frequencies noted on the Test Record. Record the results on the Test Record.
PERFORMANCE VERIFICATION 3-17 PHASE MODULATION TESTS PHASE MODULATION TESTS This procedure verifies the operation of the phase modulation (FM) input sensitivity circuits in 682XXB/683XXBs with Option 6. The carrier level of the 682XXB/683XXB RF output is monitored on a Spectrum Analyzer display. FM accuracy, in both Wide and Narrow FM modes, is determined by measuring the actual FM deviation necessary to reduce the carrier level to its lowest level.
PERFORMANCE VERIFICATION PHASE MODULATION TESTS WIDE FM Mode 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset, the CW Menu is displayed. b. Press Edit F1 to open the current frequency parameter for editing. c. Set F1 to 5.0 GHz. 2. Set up the Spectrum Analyzer as follows: a. CF: 5.0 GHz b. Span/Div: 100 kHz (1 MHz across the display) CENTER FREQUENCY BESSEL NULL 3. On the 682XXB/683XXB, make the following settings: a.
PERFORMANCE VERIFICATION PHASE MODULATION TESTS Narrow FM Mode 1. Set up the 682XXB/683XXB as follows: a. Reset the instrument by pressing SYSTEM , then Reset . Upon reset, the CW Menu is displayed. b. Press Edit F1 to open the current frequency parameter for editing. c. Set F1 to 5.0 GHz. 2. Set up the Spectrum Analyzer as follows: a. CF: 5.0 GHz b. Span/Div: 100 kHz (1 MHz across the display) 3. On the 682XXB/683XXB, make the following settings: a. Press MODULATION , then FM .
Chapter 4 Calibration Table of Contents 4-1 INTRODUCTION . . . . . . . . . . . . . . . . . . . 4-3 4-2 RECOMMENDED TEST EQUIPMENT . . . . . . . 4-3 4-3 TEST RECORDS . . . . . . . . . . . . . . . . . . . 4-3 4-4 CALIBRATION FOLLOWING SUBASSEMBLY REPLACEMENT . . . . . . . . . . . . . . . . . . . 4-4 4-5 CONNECTOR AND KEY LABEL NOTATION . . . 4-4 4-6 INITIAL SETUP. . . . Interconnection . . . PC Setup — Windows PC Setup — Windows 4-7 PRELIMINARY CALIBRATION . . . . . . . . . .
Table of Contents (Continued) ALC Slope DAC Adjustment . . . . . . . . . . 4-28 4-11 ALC BANDWIDTH CALIBRATION . . . . . . . . 4-31 Equipment Setup . . . . . . . . . . . . . . . . 4-31 Bandwidth Calibration . . . . . . . . . . . . . 4-31 4-12 AM CALIBRATION . . . . . . . . . . . . . . . . . 4-33 Equipment Setup . . . . . . . . . . . . . . . . 4-33 AM Calibration Procedure . . . . . . . . . . . 4-34 4-13 FM CALIBRATION – FIRMWARE VERSIONS 1.01 TO 2.10 (VERSION 1.00 FOR 682X5B/683X5B) .
Chapter 4 Calibration 4-1 INTRODUCTION This chapter contains procedures for calibrating the Series 682XXB/ 683XXB Synthesized Signal Generators. These procedures are typically performed because out-of-tolerance conditions have been noted during performance verification testing (see Chapter 3) or as a result of replacement of subassemblies or RF components. NOTE The calibration procedures herein support operating firmware versions as follows: series 682XXB models–Version 1.
CALIBRATION FOLLOWING SUBASSEMBLY REPLACEMENT CALIBRATION 4-4 4-5 CALIBRATION FOLLOWING SUBASSEMBLY REPLACEMENT Table 4-2 (page 4-6) lists the calibration that should be performed following the replacement of 682XXB/683XXB subassemblies or RF components. CONNECTOR AND KEY LABEL NOTATION The calibration procedures include many references to equipment interconnections and control settings.
RECOMMENDED TEST EQUIPMENT CALIBRATION Table 4-1. Recommended Test Equipment for Calibration Procedures (2 of 2) CRITICAL SPECIFICATION INSTRUMENT RECOMMENDED MANUFACTURER/MODEL PROCEDURE NUMBER Scalar Network Analyzer, with RF Detector Frequency Range: 0.01 to 50 GHz ANRITSU Model 562, with RF Detector: 560-7K50 (0.01 to 40 GHz) 560-7VA50 (0.01 to 50 GHz) SC5198 (40 to 60 GHz) Adapter K (male) to 2.
CALIBRATION Table 4-2.
CALIBRATION 4-6 INITIAL SETUP INITIAL SETUP The 682XXB/683XXB is calibrated using an IBM compatible PC and external test equipment. The PC must have the Windows 3.1 or Windows 95 operating system installed and be equipped with a mouse. Initial setup consists of interfacing the PC to the signal generator. T1678 Serial Interface Term P1 P2 To PC To 682XXB / 683XXB P3 Serial I/O COM1 or COM2 682XXB / 683XXB Figure 4-1.
CALIBRATION INITIAL SETUP PC Setup — Windows 3.1 Configure the PC with Windows 3.1 operating system to interface with the 682XXB/683XXB as follows: 1. Power up the 682XXB/683XXB. 2. Power up the PC and place it in Windows. 3. Double click on the Terminal Icon to bring up the Terminal (Untitled) window. The initial installation of Windows places the Terminal Icon in the Accessories window. 4. At the Terminal window, click on Settings to display the Settings menu.
CALIBRATION INITIAL SETUP 5. Click on Communications. NOTE When calibrating instruments with operating firmware Version 2.00 and above (Version 1.00 and above for 682X5B/683X5B models), set the Baud rate to 19200. 682XXB/683XXB MM 6.
CALIBRATION INITIAL SETUP 7. After making the selections, click on the OK button. 8. Press on the keyboard. 9. Verify that a $ prompt appears on the PC display. 10. This completes the initial setup for calibration. PC Setup — Windows 95 Configure the PC with Windows 95 operating system to interface with the 682XXB/683XXB as follows: 1. Power up the 682XXB/683XXB. 2. Power up the PC and place it in Windows. 3. Click on the Start button to activate the first menu. 4.
CALIBRATION INITIAL SETUP 7. In the New Connection Name box, type a name for the connection, then click on the OK button. The window below is now displayed. 8. In the Connect using box, type Direct to Com “_”. Enter the number of the communications port being used, for example: Com1. 9. Click on OK. The Communications Port Properties window is displayed (next page).
CALIBRATION NOTE When calibrating instruments with operating firmware below Version 2.00, set the Bits per second rate to 9600. (This does not apply to 682X5B/683X5B models.) INITIAL SETUP 10. In the Properties window, make the following selections: Bits per second Data bits Parity Stop bits Flow control 19200 (See Note) 8 None 1 Xon / Xoff 11. After making the selections, click on the OK button. 12. Press on the keyboard. 13. Verify that the $ prompt appears on the PC display. 14.
PRELIMINARY CALIBRATION CALIBRATION 4-7 PRELIMINARY CALIBRATION Figure 4-2. This procedure provides the steps necessary to initially calibrate the coarse loop, fine loop, frequency instruction, and internal DVM circuitry and the 100 MHz reference oscillator of the 682XXB/683XXB. Equipment Setup for Preliminary Calibration Equipment Setup Connect the equipment, shown in Figure 4-2, as follows: 1. Interface the PC to the 682XXB/683XXB by performing the initial setup procedure, pages 4-7 to 4-12. 2.
PRELIMINARY CALIBRATION CALIBRATION Calibration Steps Each of the steps in this procedure provides initial calibration of a specific 682XXB/683XXB circuit or component. To ensure accurate instrument calibration, each step of this procedure must be performed in sequence. 1. Calibrate the internal DVM circuitry as follows: a. At the $ prompt, type: calterm 119 and press . (The $ prompt will appear on the screen when the calibration is complete.) b. Record step completion on the Test Record.
CALIBRATION PRELIMINARY CALIBRATION 6. Calibrate the YIG Frequency Linearizer DACs as follows: a. At the $ prompt, type: calterm 127 and press . b. Follow the instructions on the screen. Enter the value of the frequency counter reading as XXXX MHz. c Record step completion on the Test Record. 7. Calibrate the 100 MHz Reference Oscillator as follows: a. If Option 16 (High Stability Time Base) is installed, disconnect the cable at A3J6. b.
CALIBRATION PRELIMINARY CALIBRATION 10. Calibrate the Center Frequency DAC as follows: a. At the $ prompt, type: calterm 114 and press . (The $ prompt will appear on the screen when the calibration is complete.) b. Record step completion on the Test Record. 11. Store the calibration data as follows: CAUTION When saving calibration data, turning off the instrument before the $ prompt returns to the screen can cause all stored data to be lost. 4-16 a.
SWITCHED FILTER SHAPER CALIBRATION CALIBRATION 4-8 SWITCHED FILTER SHAPER CALIBRATION IBM-Compatible PC This procedure provides the steps necessary to adjust the Switched Filter Shaper Amplifier gain to produce a more constant level amplifier gain with power level changes. 562 Network Analyzer 682XXB / 683XXB GPIB COM1 or COM2 Serial I/O AUX I/O AUX I/O Dedicated GPIB RF Output A 10 dB Attenuator Figure 4-3.
SWITCHED FILTER SHAPER CALIBRATION CALIBRATION Log Amplifier Zero Calibration Before the Switched Filter Shaper Amplifier can be adjusted, zero calibration of the ALC Log amplifier must be performed to eliminate any DC offsets. 1. Perform ALC Log amplifier zero calibration as follows: a. At the $ prompt on the PC display, type: calterm 115 and press . The $ prompt will appear on the screen when ALC Log amplifier zero calibration is complete. (This can take up to 3 minutes for a 40 GHz unit.) b.
SWITCHED FILTER SHAPER CALIBRATION CALIBRATION 2. Adjust the Switched Filter Limiter DAC for each of the frequency bands as follows: a. At the $ prompt on the PC display, type: calterm 145 and press . b. On the 562 Network Analyzer, set the Resolution to 0.2 dB and adjust the offset to center the top of the triangle waveform on the display. Shaper Amplifier Saturation Waveform 0.3 dB c. Observe the displayed waveform to determine whether the Shaper Amplifier is being driven to saturation.
SWITCHED FILTER SHAPER CALIBRATION CALIBRATION c. Press CHANNEL 2 DISPLAY: OFF. d. Press CHANNEL 1 DISPLAY: ON. e. Press CHANNEL 1 MENU key. f. From the Channel 1 Menu display, select POWER. g. Press OFFSET/RESOLUTION. b. Set Resolution to 5 dB/Div. c. Adjust Offset to center the display. 2. Adjust the Switched Filter Shaper DAC for each of the frequency bands as follows: a. At the $ prompt on the PC display, type: calterm 138 and press .
SWITCHED FILTER SHAPER CALIBRATION CALIBRATION Shaper DAC Adjustment For Models 682XXB with Firmware Version 2.39 and above; Models 683XXB with Firmware Version 2.46 and above; Models 682X5B with Firmware Version 1.28 and above; and Models 683X5B with Firmware Version 1.32 and above. The following step in the procedure adjusts the Switch Filter Shaper DAC which controls the gain of the Switched Filter Shaper Amplifier.
CALIBRATION 4-9 RF LEVEL CALIBRATION RF LEVEL CALIBRATION RF level calibration requires the use of an automated test system. A computer-controlled power meter measures the 682XXB/683XXB power output at many frequencies throughout the frequency range of the instrument. Correction factors are then calculated and stored in non-volatile memory (EEPROM) located on the A17 CPU PCB.
ALC SLOPE CALIBRATION CALIBRATION 4-10 ALC SLOPE CALIBRATION IBM-Compatible PC Models 683XXB with Firmware Version 1.01 to 2.00 This procedure provides the steps necessary to perform ALC Slope calibration. The ALC Slope DAC is calibrated to adjust for an increasing or decreasing output power-vs-output frequency in the analog sweep mode. The ALC Slope DAC has two calibrations—one for frequencies £2 GHz and one for frequencies >2 GHz.
ALC SLOPE CALIBRATION CALIBRATION NOTE Before beginning this calibration procedure, always let the 683XXB warm up for a minimum of one hour. ALC Slope DAC Adjustment The following procedure lets you adjust the ALC Slope DAC to compensate for decreasing output power-vs-frequency for frequencies £2 GHz and for frequencies >2 GHz. 1. Set up the 562 Network Analyzer as follows: a. Press the System Menu key. b. From the System Menu display, select RESET. c. Press CHANNEL 2 DISPLAY: OFF. d.
ALC SLOPE CALIBRATION CALIBRATION 3. Make the following selections on the 562 Network Analyzer to normalize the step sweep. a. Press CALIBRATION and follow the menu on the display. b. Press AUTOSCALE. c. Press OFFSET/RESOLUTION and set the Resolution to 0.2 dB. 4. On the 683XXB, press Analog to select the analog sweep mode. 5. Adjust the ALC Slope DAC for frequencies £2 GHz as follows: a. At the $ prompt on the PC display, type: calset and press . b. Type: 1 and press . c.
ALC SLOPE CALIBRATION CALIBRATION f. Press Sweep Ramp . At the resulting Step Sweep Ramp Menu, press Num of Steps and set the number of steps to 200. g. Press Step to return to the Step Sweep Menu display. 7. Make the following selections on the 562 Network Analyzer to normalize the step sweep. a. Press CALIBRATION and follow the menu on the display. b. Press AUTOSCALE. c. Press OFFSET/RESOLUTION and set the Resolution to 0.2 dB. 8. On the 683XXB, press Analog to select the analog sweep mode. 9.
ALC SLOPE CALIBRATION CALIBRATION Models 683XXB with Firmware Version 2.00 and above (Models 683X5B with Firmware Version 1.00 and above) This procedure provides the steps necessary to perform ALC Slope calibration. The ALC Slope is calibrated to adjust for decreasing output power-vs-output frequency in full band analog sweep. IBM-Compatible PC 683XXB Signal Generator GPIB COM1 or COM2 Serial I/O 562 Network Analyzer AUX I/O AUX I/O Dedicated GPIB RF Output A 10 dB Attenuator Figure 4-7.
ALC SLOPE CALIBRATION CALIBRATION NOTE Before beginning this calibration procedure, always let the 682XXB/683XXB warm up for a minimum of one hour. ALC Slope DAC Adjustment NOTE For 683X5B models, the frequency ranges for Band 0 and Band 1 are 0.5 to 2.2 GHz and 2.2 to 8.4 GHz respectively. The following procedure lets you adjust the ALC Slope over individual frequency ranges to compensate for decreasing output power-vs-frequency in analog sweep.
ALC SLOPE CALIBRATION CALIBRATION 2 GHz 8.4 GHz 40 GHz 20 GHz 50. 60, or 65 (67) GHz Normalized Step Sweep ALC Slope Before Adjustment Figure 4-8. ALC Slope Adjustment Waveform Display d. Press CW/SWEEP SELECT to return to the Step Sweep Menu display. e. Press Sweep Ramp . At the resulting Step Sweep Ramp Menu, press Num of Steps and set the number of steps to 400. 3. Make the following selections on the 562 Network Analyzer to normalize the step sweep. a.
CALIBRATION ALC SLOPE CALIBRATION b. Adjust the ALC Slope so that the power at the start and stop frequencies (of the analog sweep for band 0) match as closely as possible the normalized straight line in step sweep mode. When completed, press n for the next band. c. Using the Slope and Offset adjustment keys, continue until the ALC Slope for all bands has been adjusted. d. Type: X and press to exit the calibration routine. (The $ prompt will appear on the screen.) e.
ALC BANDWIDTH CALIBRATION CALIBRATION 4-11 ALC BANDWIDTH CALIBRATION This procedure provides the steps necessary to perform ALC Bandwidth calibration. The ALC Bandwidth is adjusted to compensate for gain variations of the modulator. The adjustment is performed for each frequency band. This provides a more consistent bandwith throughout the frequency range of the instrument. 682XXB / 683XXB IBM-Compatible PC Serial I/O COM1 or COM2 Figure 4-9.
CALIBRATION ALC BANDWIDTH CALIBRATION The $ prompt will appear on the screen when the ALC Bandwidth calibration is complete. (This can take up to 15 minutes depending on the frequency range of the 682XXB/683XXB.) b. Record step completion on the Test Record. CAUTION When saving calibration data, turning off the instrument before the $ prompt returns to the screen can cause all stored data to be lost. 4-32 2. Store the calibration data as follows: a. At the $ prompt, type: calterm 787 and press .
AM CALIBRATION CALIBRATION 4-12 AM CALIBRATION This procedure provides the steps necessary to perform AM calibration. This consists of calibrating the AM Calibration DAC, the AM Meter circuit, and the AM Function Generator. The AM Calibration DAC is calibrated for input sensitivities of 100%/V (linear mode) and 25 dB/V (logarithmic mode) for frequencies £2 GHz and >2 GHz.
AM CALIBRATION CALIBRATION 4. Using the K (male) to 2.4 mm (female) adapter, connect the Power Sensor to the RF OUTPUT of the 682XXB/683XXB. NOTE Before beginning this calibration procedure, always let the 682XXB/683XXB warm up for a minimum of one hour. AM Calibration Procedure NOTE For 682X5B/683X5B models, the procedure for Linear AM and Log AM calibration must also be performed twice—once for frequencies of £2.2 GHz and once for frequencies of >2.2 GHz.
CALIBRATION AM CALIBRATION e. When the DAC has been adjusted, press Q on the keyboard to exit the program. (If the instrument has a Down Converter installed, you will be returned to the start of the program to perform this calibration for frequencies of >2 GHz.) When the DAC has been completely adjusted, the program will exit to the $ prompt. e. Record step completion on the Test Record. 3. Perform Log AM calibration as follows: a. At the $ prompt, type: calterm 113 and press .
CALIBRATION AM CALIBRATION 5. Perform AM Function Generator calibration as follows: a. At the $ prompt, type: calterm 146 and press . (The $ prompt will appear on the screen when the calibration is complete.) b. Record step completion on the Test Record. 6. Store the calibration data as follows: CAUTION When saving calibration data, turning off the instrument before the $ prompt returns to the screen can cause all stored data to be lost. 4-36 a.
FM CALIBRATION CALIBRATION 4-13 FM CALIBRATION Models 682XXB/683XXB with Firmware Versions 1.01 to 2.10 Models 682X5B/683X5B with Firmwave Version 1.00 This procedure provides the steps necessary to perform FM calibration. This consists of calibrating the FM Meter circuit, the Offset Balance DAC, and the FM Gain Control DAC. The FM Gain Control DAC is calibrated for input sensitivities in both narrow and wide FM modes.
FM CALIBRATION CALIBRATION 4. Connect the 682XXB/683XXB RF OUTPUT to the Spectrum Analyzer RF Input. NOTE Before beginning this calibration procedure, always let the 682XXB/683XXB warm up for a minimum of one hour. FM Calibration Procedure The following steps in the procedure lets you (1) calibrate the FM Meter circuit, (2) calibrate the FM Offset Balance DAC, (3) adjust the FM Gain Control DAC in both narrow and wide modes, and (4) store the results in non-volatile memory (EEPROM) on the A17 CPU PCB.
CALIBRATION FM CALIBRATION Perform the calibration as follows: a. At the $ prompt, type: calterm 124 and press . b. Set up the Function Generator for a 0.4 Hz square wave with an output level of 2 volts peak to peak. c. On the Spectrum Analyzer, set the Span/Div to 50 MHz per division. d. On the computer keyboard, use the ‘, 1, 2, and 3 keys to increment and the 7, 8, 9, and 0 keys to decrement the value of the DAC’s setting. Start calibration by pressing the ‘ key. e.
CALIBRATION CENTER FREQUENCY FM CALIBRATION m.Now, adjust the center frequency control to position the high carrier at the center of the display. Note the frequency reading. n. The difference between these two frequencies is the actual peak-to-peak frequency deviation. It should be 20 MHz ±0.8 MHz. If not, fine adjust the value of the DAC’s setting to obtain this deviation. BESSEL NULL o.
CALIBRATION FM CALIBRATION f. When finished setting the DAC, press Q on the keyboard to go to the next calibration step. When the DAC has been completely adjusted, the program will exit to the $ prompt. g. Record step completion on the Test Record. 5. Internal FM Wide mode sensitivity calibration is accomplished by adjusting the FM Gain Control DAC to obtain 200 MHz and 20 MHz FM deviations at frequencies of 5 GHz and 15 GHz. Modulating signal inputs are from the internal Function Generator.
CALIBRATION FM CALIBRATION quency control to position the high (or low) carrier at the center of the display. Note the frequency reading. j. On the keyboard, enter 1 to toggle the polarity. k. Now, adjust the center frequency control to position the low (or high) carrier at the center of the display. Note the frequency reading. l. The difference between these two frequencies should be 200 MHz ±8 MHz. If not, enter 2 and fine adjust the DAC to obtain this deviation. m.
CALIBRATION FM CALIBRATION w. When finished setting the DAC, press Q on the keyboard to return to the menu. Then, enter 3 to go to the next calibration step (adjusting the DAC to obtain 200 MHz deviation at 15 GHz). When the DAC has been completely adjusted, the program will exit to the $ prompt. x. Record step completion on the Test Record. 6.
FM CALIBRATION CALIBRATION Models 682XXB with Firmware Version 2.18 and above Models 683XXB with Firmwave Version 2.20 and above Models 682X5B/683X5B with Firmware Version 1.07 and above This procedure provides the steps necessary to perform FM calibration. This consists of calibrating the FM Meter circuit and the FM Variable Gain Control DAC. The FM Variable Gain Control DAC is calibrated for input sensitivities in Locked, Locked Low-Noise, Unlocked Narrow, and Unlocked Wide FM modes.
FM CALIBRATION CALIBRATION 4. Connect the 682XXB/683XXB RF OUTPUT to the Spectrum Analyzer RF Input. NOTE Before beginning this calibration procedure, always let the 682XXB/683XXB warm up for a minimum of one hour.
CALIBRATION FM CALIBRATION 3. External Unlocked Wide FM Mode Sensitivity calibration is accomplished by adjusting the FM Variable Gain Control DAC to obtain a 200 MHz FM deviation at frequencies of 5 GHz and 15 GHz. The modulating signal input is from the external Function Generator. Perform the calibration as follows: a. At the $ prompt, type: calterm 124 and press . b. Set up the Function Generator for a 0.1 Hz square wave with an output level of ±1 volt ±0.002 volts (2 volts peak to peak). c.
CALIBRATION FM CALIBRATION 4. Internal Unlocked Wide FM Mode Sensitivity calibration is accomplished by adjusting the FM Variable Gain Control DAC to obtain a 200 MHz FM deviation at frequencies of 5 GHz and 15 GHz. The modulating signal input is from the internal Function Generator. Perform the calibration as follows: a. At the $ prompt, type: calterm 143 and press . The screen will display the following menu: 1) Toggle polarity (this lets you go from a positive deviation to negative deviation.
CALIBRATION FM CALIBRATION k. Now adjust the center frequency control to position the low (or high) carrier at the center of the display. Note the frequency reading. l. The difference between these two frequencies should be 200 MHz ±0.5 MHz. If not, enter 2 and fine adjust the DAC to obtain this deviation. m. When finished setting the DAC, press Q on the keyboard to return to the menu, then enter 3 to go to the next calibration step (adjusting the DAC to obtain a 200 MHz deviation at 15 GHz).
CALIBRATION FM CALIBRATION When the DAC has been completely adjusted, the program will exit to the $ prompt. g. Record step completion on the Test Record. 6. Internal Locked, Locked Low-Noise, and Unlocked Narrow FM Mode Sensitivity calibration is accomplished by adjusting the FM Variable Gain Control DAC to reduce the carrier level as low as possible at frequencies of 5 GHz and 20 GHz. The modulating signal input is from the internal Function Generator. Perform the calibration as follows: a.
CALIBRATION FM CALIBRATION c. Set up the Function Generator for a 99.8 kHz sine wave with an output level of 0.707 volts RMS (2 volts peak to peak). Use a frequency counter to verify the output frequency of your function generator is set to ±1%. d. On the Spectrum Analyzer, set the Span/Div to 50 kHz per division. NOTE You may need to adjust the RBW setting on the Spectrum Analyzer in order to see the >–50 dBc null. e. On the computer keyboard, use the ‘, 1, 2.
PHASE MODULATION (FM) CALIBRATION CALIBRATION 4-14 PHASE MODULATION (FM) CALIBRATION This procedure provides the steps necessary to perform phase modulation (FM) calibration for 682XXB/683XXBs with Option 6. This consists of calibrating the FM Variable Gain Control DAC and the FM Flatness DAC for input sensitivities in Narrow and Wide FM modes.
PHASE MODULATION (FM) CALIBRATION CALIBRATION 4. Connect the 682XXB/683XXB RF OUTPUT to the Spectrum Analyzer RF Input. NOTE Before beginning this calibration procedure, always let the 682XXB/683XXB warm up for a minimum of one hour. FM Calibration Procedure The following steps in the procedure lets you calibrate the FM Variable Gain Control DAC and the FM Flatness DAC in both Wide and Narrow FM modes and store the results in non-volatile memory (EEPROM) on the A17 CPU PCB.
CALIBRATION PHASE MODULATION (FM) CALIBRATION When the DAC has been completely adjusted, the program will exit to the $ prompt. g. Record step completion on the Test Record. NOTE To save the calibration data after completing any calibration step, type: calterm 787 and press . 2. Internal Wide FM Mode Sensitivity calibration is accomplished by adjusting the FM Variable Gain Control DAC to reduce the carrier level as low as possible at frequencies of 5 GHz and 20 GHz.
CALIBRATION PHASE MODULATION (FM) CALIBRATION c. On the Spectrum Analyzer, set the Span/Div to 50 kHz per division. d. On the computer keyboard, use the ‘, 1, 2, and 3 keys to increment and the 7, 8, 9, and 0 keys to decrement the value of the DAC’s setting. Start calibration by pressing an increment key. NOTE You may need to adjust the RBW setting on the Spectrum Analyzer in order to see the >–40 dBc null. e.
CALIBRATION PHASE MODULATION (FM) CALIBRATION When the DAC has been completely adjusted, the program will exit to the $ prompt. g. Record step completion on the Test Record. 5. Internal Narrow FM Mode Sensitivity calibration is accomplished by adjusting the FM Variable Gain Control DAC to reduce the carrier level as low as possible at frequencies of 5 GHz and 20 GHz. The modulating signal input is from the internal Function Generator. Perform the calibration as follows: a.
CALIBRATION PHASE MODULATION (FM) CALIBRATION c. On the Spectrum Analyzer, set the Span/Div ot 50 kHz per division. d. On the computer keyboard, use the ‘, 1, 2, and 3 keys to increment and the 7, 8, 9, and 0 keys to decrement the value of the DAC’s setting. Start the calibration by pressing an increment key. NOTE You may need to adjust the RBW setting on the Spectrum Analyzer in order to see the >–40 dBc null. e.
Chapter 5 Troubleshooting Table of Contents 5-1 INTRODUCTION . . . . . . . . . . . . . . . . . . . 5-3 5-2 RECOMMENDED TEST EQUIPMENT . . . . . . . 5-3 5-3 ERROR AND WARNING/STATUS MESSAGES. . . 5-3 Self-Test Error Messages. . . . . . . . . . . . . 5-3 Normal Operation Error and Warning/Status Messages . . . . . . . . . . . . . . . . . . . . 5-7 5-4 MALFUNCTIONS NOT DISPLAYING AN ERROR MESSAGE . . . . . . . . . . . . . . . . . . . . . 5-10 5-5 TROUBLESHOOTING TABLES . . . . . . . . . .
The majority of the troubleshooting procedures presented in this chapter require the removal of the instrument covers to gain access to test points on printed circuit boards and other subassemblies. WARNING Hazardous voltages are present inside the 682XXB/683XXB whenever ac line power is connected. Turn off the instrument and remove the line cord before removing any covers or panels.
Chapter 5 Troubleshooting 5-1 5-2 5-3 INTRODUCTION This chapter provides information for troubleshooting signal generator malfunctions. The troubleshooting procedures presented in this chapter support fault isolation to a replaceable subassembly or RF component. (Remove and replace procedures for the subassemblies and RF components are found in Chapter 6.
SELF-TEST ERROR MESSAGES TROUBLESHOOTING Table 5-1.
SELF-TEST ERROR MESSAGES TROUBLESHOOTING Table 5-1. Self-Test Error Messages (2 of 3) Troubleshooting Table Page Number Error 120 Delta-F Circuits Failed 5-16 5-36 Error 121 Unleveled Indicator Failed 5-17 5-37 Error 122 Level Reference Failed 5-17 5-37 Error 123 Detector Log Amp Failed 5-17 5-37 Error 124 Full Band Unlocked and Unleveled 5-18 5-39 Error 125 8.4 – 20 GHz Unlocked and Unleveled 5-18 5-39 Error 126 2 – 8.
SELF-TEST ERROR MESSAGES TROUBLESHOOTING Table 5-1. Self-Test Error Messages (3 of 3) Troubleshooting Table Page Number Error 144 RF was Off when Selftest started. Some tests were not performed.
ERROR AND WARNING/ STATUS MESSAGES TROUBLESHOOTING Normal Operation Error and Warning/ Status Messages When an abnormal condition is detected during operation, the 682XXB/683XXB displays an error message to indicate that the output is abnormal or that a signal input or data entry is invalid. It also displays warning messages to alert the operator to conditions that could cause an inaccurate signal generator output.
ERROR AND WARNING/ STATUS MESSAGES TROUBLESHOOTING Table 5-2. Possible Error Messages during Normal Operations (2 of 2) Error Message ERR 5-8 Description Continued: (2) The external FM modulating signal exceeds the input voltage range. In addition, the message “Reduce FM Input Level” appears at the bottom of the FM status display.
ERROR AND WARNING/ STATUS MESSAGES TROUBLESHOOTING Table 5-3. Possible Warning/Status Messages during Normal Operation Warning/Status Message 682XXB/683XXB MM Description OVN COLD This warning message indicates that the 100 MHz Crystal oven (or the 10 MHz Crystal oven if Option 16 is installed) has not reached operating temperature. Normally displayed during a cold start of the signal generator. If the message is displayed during normal operation, it could indicate a malfunction.
TROUBLESHOOTING 5-4 MALFUNCTIONS NOT DISPLAYING AN ERROR MESSAGE MALFUNCTIONS NOT DISPLAYING AN ERROR MESSAGE The 682XXB/683XXB must be operating to run self-test. Therefore, malfunctions that cause the instrument to be non-operational do not produce error messages. These problems generally are a failure of the 682XXB/683XXB to power up properly. Table 5-4, beginning on page 5-12, provides troubleshooting procedures for these malfunctions.
CONNECTOR AND TEST POINT LOCATIONS TROUBLESHOOTING A21-1 BNC/AUX I/0 Connector PCB Rear Panel A21 Line Filter/ Rectifier PCB A21P2 Fan Assy. A19 Power Conditioner PCB A19P2 A18 Power Supply PCB A19 2-20 GHz YIG Oscillator A17 CPU PCB A16 CPU Interface PCB A15 Regulator PCB A18 Switched Filter Assy.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-4. Malfunctions Not Displaying an Error Message (1 of 6) Signal Generator Will Not Turn On (OPERATE light is OFF) Normal Operation: When the 682XXB/683XXB is connected to the power source, the OPERATE light should illuminate and the instrument should power up. Step 1. Disconnect the 682XXB/683XXB from the power source, then check the line fuse on the rear panel. q q If the line fuse is defective, replace but do not apply power. Go to step 2. Step 2.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-4. Malfunctions Not Displaying an Error Message (2 of 6) q q If the voltage is correct, the Front Panel assembly or the cable between Motherboard connector A20J22 and the Front Panel assembly may be defective.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-4. Malfunctions Not Displaying an Error Message (3 of 6) No Pulse Modulation of the RF Output Description: The signal generator does not display any error messages during self-test; however, there is no pulse modulation of the RF output. Step 1. Set up the 682XXB/683XXB as follows: a. Press SYSTEM , then Reset . b. Press MODULATION , then Pulse to go to the Internal Pulse Modulation Status display. c. Step 2. Press On/Off to turn on pulse modulation.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-4. Malfunctions Not Displaying an Error Message (4 of 6) q q If the signals are not present or are incorrect, replace the A6 PCB. Step 8. Disconnect the cable, W123, from J7 of the Pulsed Switched Filter assembly. Step 9. Using the oscilloscope, verify the presence of a pulse train with an output level of +2 volts to –2 volts, a pulse period of 1 ms, and a pulse width of 200 ms at the end of the cable, W123.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-4. Malfunctions Not Displaying an Error Message (5 of 6) Output Power Related Problems (>40 GHz) 682XXB/683XXB Models with SQM Description: The signal generator does not display any error message during self-test; however, there is no or low RF output above 40 GHz. Step 1. Set up the 682XXB/683XXB as follows: a. 682XXB Setup: CW/SWEEP SELECT: Step F1: 40.0 GHz F2: 50.0, 60.0, or 65.0 GHz (Model dependent) Number of Steps: 400 L1: –2.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-4. Step 4. Malfunctions Not Displaying an Error Message (6 of 6) Connect a 562 Scalar Network Analyzer to the 682XXB/ 683XXB as follows: a. Connect the 682XXB/683XXB AUX I/O to the 562 AUX I/O. b. Connect the 562 DEDICATED GPIB to the 682XXB/ w683XXB IEEE-488 GPIB. c. Step 5. Connect the RF Detector to the 562 Channel A Input. Set up the 562 Scalar Network Analyzer as follows: a. Press SYSTEM MENU display. b. From System Menu display, select RESET. c.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-5. Error Messages 100, 101, and 102 Internal DVM Tests Error 100 DVM Ground Offset Failed, or Error 101 DVM Positive 10V Reference, or Error 102 DVM Negative 10V Reference Description: The DVM circuitry, located on the A16 CPU Interface PCB, is calibrated using the ±10 volts from the reference supplies on the A12 Analog Instruction PCB. The error messages indicate a calibration-related problem or a defective ±10 volt reference. Step 1.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-6. Error Messages 105 and 106 (1 of 10) Power Supply Tests WARNING Voltages hazardous to life are present throughout the power supply circuits, even when the front panel LINE switch is in the STANDBY postion. When performing maintenance, use utmost care to avoid electrical shock. Error 105 Power Supply Voltage(s) out of Regulation.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-6. Step 2. Error Messages 105 and 106 (2 of 10) Perform the following procedure to isolate malfunctions when the voltages from several regulated supplies are incorrect. a. Place the LINE switch to STANDBY. b. Replace the A15 PCB assembly. c. Place the LINE switch to OPERATE and measure the regulated voltages per Table 5-7. q q If the voltages are correct, the problem is cleared. If the voltages are incorrect, go to step d. d.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-6. Error Messages 105 and 106 (3 of 10) ±15VG Supply Problems This supply provides ±15 volts to the YIG Driver; SDM, SQM Driver; CPU; and CPU I/O circuits andw the Switched Filter and Down Converter assemblies. Step 4. Perform the following procedure to isolate malfunctions to the ±15VG supply and outlying load circuits. a. Place the LINE switch to STANDBY. b. Replace the A15 PCB assembly. c.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-6. Error Messages 105 and 106 (4 of 10) ±15VA Supply Problems This supply provides ±15 volts to the Function Generator, PIN Control, ALC, FM, and Analog Instruction circuits. Step 5. Perform the following procedure to isolate malfunctions to the ±15VA supply and outlying load circuits. a. Place the LINE switch to STANDBY. b. Replace the A15 PCB assembly. c. Place the LINE switch to OPERATE and measure the ±15VA voltages per Table 5-7.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-6. Error Messages 105 and 106 (5 of 10) ±15VLP Supply Problems This supply provides ±15 volts to the Pulse Generator and the Reference, Coarse, Fine, and YIG Loop circuits. Step 6. Perform the following procedure to isolate malfunctions to the ±15VLP supply and outlying load circuits. a. Place the LINE switch to STANDBY. b. Replace the A15 PCB assembly. c. Place the LINE switch to OPERATE and measure the ±15VLP voltages per Table 5-7.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-6. Error Messages 105 and 106 (6 of 10) ±15VFM Supply Problems This supply provides ±15 volts to the FM circuits. Step 7. Perform the following procedure to isolate malfunctions to the ±15VFM supply and its outlying load circuit. a. Place the LINE switch to STANDBY. b. Replace the A15 PCB assembly. c. Place the LINE switch to OPERATE and measure the ±15VFM voltages per Table 5-7. q q If the voltages are correct, the problem is cleared.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-6. Error Messages 105 and 106 (7 of 10) –18VT Supply Problems This supply provides –18 volts to the front panel LCD contrast circuit and to drive the YIG-tuned oscillator main tuning coil during CW and slow analog sweeps. Step 8. Perform the following procedure to isolate malfunctions to the –18VT supply and its outlying load circuit. a. Place the LINE switch to STANDBY. b. Replace the A15 PCB assembly. c.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-6. Error Messages 105 and 106 (8 of 10) –43VT Supply Problems This supply provides –43 volts to drive the YIG-tuned oscillator main tuning coil during bandswitching, fast analog sweeps, and digital sweeps. Step 9. Perform the following procedure to isolate malfunctions to the –43VT supply and its outlying load circuit. a. Place the LINE switch to STANDBY. b. Replace the A15 PCB assembly. c. Place the LINE switch to OPERATE. d.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-6. Error Messages 105 and 106 (9 of 10) +24VH Supply Problems This supply provides +24 volts for the YIG-tuned oscillator heater, the V/GHz circuit on the A12 PCB, and the coarse, fine, and YIG loop circuits.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-6. Error Messages 105 and 106 (10 of 10) Power Supply Not Phase-Locked Error 106 Power Supply not Locked Description: The switching power supply is not phase locked to the 400 kHz reference signal from the A6 Pulse Generator PCB. Error 106 may be displayed alone or it may be accompanied by error 148 (Pulse 40 MHz reference circuitry failed). Power Supply not Locked and Error 148 is not Displayed Step 1.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-8. Error Messages 108, 109 and 110 (1 of 2) A3 Reference Loop Error 108 Crystal Oven Cold Description: The oven of the 100 MHz crystal oscillator or the Option 16 high-stability 10 MHz crystal oscillator has not reached operating temperature. Step 1. Allow a 30 minute warm up, then run self-test again. q q q If error 108 is not displayed, the problem is cleared. If error 108 displays and Option 16 is not installed, replace the A3 PCB.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-8. Error Messages 108, 109 and 110 (2 of 2) Error 110 The 100MHz Reference is not Locked to the High Stability 10MHz Crystal Oscillator Description: The reference loop is not phase-locked to the Option 16 high stability 10 MHz crystal oscillator. Step 1. Disconnect the cable from A3J6. Step 2. Using an oscilloscope, verify the presence of a 10 MHz signal at the end of the cable. The signal amplitude should be ³1 volt (into 50W). q q Table 5-9.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-9. Step 6. Error Message 111 (2 of 2) Using the spectrum analyzer, verify the presence of the +3 dBm ±5 dB, 10 MHz signal at the end of the cable. q q If present, replace the A4 PCB. If not present, go to step 7. Step 7. Disconnect cable W105 at A3J4. Step 8. Using the spectrum analyzer, verify the presence of the +3 dBm ±5 dB, 10 MHz signal at A3J4. q q Step 9. If present, replace the cable W105. If not present, replace the A3 PCB.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-11. Error Message 112 A4 Coarse Loop Error 112 Coarse Loop Osc Failed Description: The coarse loop oscillator is not phase-locked. Step 1. Disconnect cable W103 at A4J1 and cable W105 at A4J6. Step 2. Using a spectrum analyzer, verify the presence of a +5 dBm ±6 dB, 500 MHz signal at the end of cable W103 and a +3 dBm ±5 dB, 10 MHz signal at the end of cable W105. q q Disconnect cable W103 at A3J1 and cable W105 at A3J4. Step 4.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-13. Error Messages 113 and 115 (1 of 2) A7 YIG Loop Error 113 YIG Loop Osc Failed Error 115 Not Locked Indicator Failed Description: Error 113 indicates that the YIG loop is not phaselocked. Error 115 indicates a failure of the not phased-lock indicator circuit. Step 1. Verify the signal output from the A4 Coarse Loop PCB by performing steps 5 thru 7 in Table 5-11. q q Step 2. If the coarse loop signals are incorrect, replace the A4 PCB.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-13. Step 8. Error Messages 113 and 115 (2 of 2) Run self-test. q q Table 5-14. If error 113 or 115 is not displayed, the problem is cleared. If either error 113 or 115 is displayed, contact your local ANRITSU service center for assistance. Error Message 114 Down Converter Error 114 Down Converter LO not Locked Description: The local oscillator in the down converter assembly is not phase-locked. Step 1. Disconnect cable W112 at A3J2. Step 2.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-15. Error Message 116 A11 FM PCB Error 116 FM Loop Gain Check Failed Description: The FM loop has failed or the loop gain is out of tolerance. Step 1. Perform a preliminary calibration. (Refer to chapter 4 for the calibration procedure.) Step 2. Run self-test. q q Step 3. If error 116 is still displayed, go to step 3. Replace the A11 PCB and run self-test again. q q 682XXB/683XXB MM If error 116 is not displayed, the problem is cleared.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-16. Error Messages 107, 117, 118, 119, and 120 A12 Analog Instruction Error 107 Error 117 Error 118 Error 119 Error 120 Sweep Time Check Failed Linearizer Check Failed Switchpoint DAC Failed Center Frequency Circuits Failed Delta-F Circuits Failed Description: Each of these error messages indicates a problem in the circuitry on the A12 Analog Instruction PCB that provides frequency tuning voltages for the YIG-tuned oscillator. Step 1.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-17. Error Messages 121, 122, 123, 127, 142, and 143 (1 of 2) A10 ALC Error 121 Error 122 Error 123 Error 127 Unleveled Indicator Failed Level Reference Failed Detector Log Amp Failed Detector Input Circuit Failed Description: Error 121 indicates a failure of the circuit that alerts the CPU whenever the RF output power becomes unleveled.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-17. q q Error Messages 121, 122, 123, 127, 142, and 143 (2 of 2) If present, replace the A10 PCB. If not present, replace the cable W122. Error 143 Slope DAC Failed Description: Error 143 indicates a problem with the level slope DAC circuitry on the A10 PCB. NOTE When troubleshooting this error in a 682XXB model, begin at step 3 of the procedure. Step 1. Recalibrate the ALC slope. (Refer to chapter 4 for the calibration procedure.) Step 2.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-18. Error Messages 124, 125, and 126 (1 of 2) YIG-tuned Oscillator Error 124 Full Band Unlocked and Unleveled Error 125 8.4-20 GHz Unlocked and Unleveled Error 126 2-8.4 GHz Unlocked and Unleveled Description: These error messages indicate either a failure of one or both of the oscillators in the 2-20 GHz YIG-tuned oscillator assembly. Step 1. Connect a 562 Scalar Network Analyzer to the 682XXB/ 683XXB as follows: a.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-18. q q Error Messages 124, 125, and 126 (2 of 2) If the RF signal is correct in both frequency and amplitude throughout the full sweep, go to step 8. If there is no RF signal for all or part of the sweep or if the amplitude of the RF signal is low, go to step 5. Step 5. Connect the X input of an oscilloscope to the 682XXB/ 683XXB rear panel HORIZ OUT connector. Step 6. Using the oscilloscope, check for a –0.2 to –3.5 volt YIG tuning ramp at A13TP10.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-20. Error Messages 128, 129, 130, 131, 132, 133, 134, and 135 (1 of 8) Output Power Level Related Problems (0.01 to 20 GHz) Error 128 .01-2 GHz Unleveled Description: Error 128 indicates a failure of of the down converter leveling circuitry. The 682XXB/683XXB may or may not produce an RF output in the 0.01 to 2 GHz frequency range. Thus, there are two troubleshooting paths for this problem—unleveled with output power and unleveled with no/low output power.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-20. Error Messages 128, 129, 130, 131, 132, 133, 134, and 135 (2 of 8) Unleveled with no/low output power: Step 1. Set up the 682XXB/683XXB as follows: a. 682XXB Setup: CW/SWEEP SELECT: Step F1: 0.010 GHz F2: 2.000 GHz Number of Steps: 400 L1: +1.00 dBm 683XXB Setup: CW/SWEEP SELECT: Analog F1: 0.010 GHz F2: 2.000 GHz Sweep Time: 0.100 Sec L1: +1.00 dBm b. LEVEL/ALC SELECT: ALC Mode Leveling Menu: Internal Step 2.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-20. Step 7. Error Messages 128, 129, 130, 131, 132, 133, 134, and 135 (3 of 8) Connect a 562 Scalar Network Analyzer to the 682XXB/ 683XXB as follows: a. Connect the 682XXB/683XXB AUX I/O to the 562 AUX I/O. b. Connect the 562 DEDICATED GPIB to the 682XXB/ 683XXB IEEE-488 GPIB. c. Step 8. Connect the RF Detector to the 562 Channel A Input. Set up the 562 Scalar Network Analyzer as follows: a. Press SYSTEM MENU key. b.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-20. Error Messages 128, 129, 130, 131, 132, 133, 134, and 135 (4 of 8) Error 129 Switched Filter or Level Detector Failed Description: Error 129 indicates a failure of either the switched filter or level detector circuitry. The 682XXB/683XXB may or may not produce an RF output in the 2 to 20 GHz frequency range. Thus, there are two troubleshooting paths for this problem—unleveled with output power and unleveled with no/low output power.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-20. Error Messages 128, 129, 130, 131, 132, 133, 134, and 135 (5 of 8) Unleveled with no/low output power: Step 1. Set up the 682XXB/683XXB as follows: a. 682XXB Setup: CW/SWEEP SELECT: Step F1: 0.010 GHz F2: 20.000 GHz Number of Steps: 400 L1: +1.00 dBm 683XXB Setup: CW/SWEEP SELECT: Analog F1: 0.010 GHz F2: 20.000 GHz Sweep Time: 0.100 Sec L1: +1.00 dBm b. LEVEL/ALC SELECT: ALC Mode Leveling Menu: Internal Step 2.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-20. Step 5. Error Messages 128, 129, 130, 131, 132, 133, 134, and 135 (6 of 8) Set up the 562 Scalar Network Analyzer as follows: a. Press SYSTEM MENU key. b. From System Menu display, select RESET. c. Press CHANNEL 2 DISPLAY: OFF. d. Press CHANNEL 1 DISPLAY: ON. Step 6. e. Press CHANNEL 1 MENU key. f. From the Channel 1 Menu display, select POWER. Using the scalar network analyzer, measure the RF output at J2 of the switched filter assembly.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-20. Error 130 Error 131 Error 132 Error 133 Error 134 Error Messages 128, 129, 130, 131, 132, 133, 134, and 135 (7 of 8) 2-3.3 GH Switched Filter 3.3-5.5 GH Switched Filter 5.5-8.4 GH Switched Filter 8.4-13.25 GH Switched Filter 13.25-20 GH Switched Filter Description: Each of these error messages indicates a failure in a switched filter path within the switched filter assembly.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-20. Error Messages 128, 129, 130, 131, 132, 133, 134, and 135 (8 of 8) Error 135 Modulator or Driver Failed Description: Error 135 indicates a failure of the modulator in the switched filter assembly or the modulator driver circuitry on the A9 PIN Control PCB. Step 1. Replace the A9 PCB and run self-test. q q Step 2. If error 135 is still displayed, go to step 2. Replace the switched filter assembly and run self-test again.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-22. Error Messages 138, 139, 140, and 141 (1 of 2) Output Power Level Related Problems (20 to 40 GHz) 682XXB/683XXB Models with SDM Error 138 SDM Unit or Driver Failed Description: Error 138 indicates a failure of the SDM, a failure of the SDM bias regulator circuitry on the A14 SDM Driver PCB, or a failure of the frequency band selection circuitry on the A12 Analog Instruction PCB.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-22. Error Messages 138, 139, 140, and 141 (2 of 2) Error 139 32-40 GHz SDM Section Failed Error 140 25-32 GHz SDM Section Failed Error 141 20-25 GHz SDM Section Failed Description: Each of these error messages indicates a failure in a switched doubler filter path within the SDM. The 682XXB/683XXB will not produce an RF output in the frequency range of the failed switched doubler filter path. Step 1. Set up the 682XXB/683XXB as follows: a.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-24. Error Message 144 Error 144 RF was Off when Selftest started. Some tests where not performed Description: Indicates that some self-tests where not performed because the RF Output was selected OFF on the front panel. Step 1. Press the OUTPUT key on the front panel to turn the RF Output ON. Step 2. Run self-test again. Table 5-25.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-26. Error Message 147 Error 147 Internal FM circuitry failed Description: Indicates a failure of the internal frequency modulation function. The 682XXB/683XXB may or may not provide frequency modulation of the RF output signal using modulating signals from an external source. Step 1. Set up the 682XXB/683XXB as follows: a. Press SYSTEM , then Reset . b. Press MODULATION , then FM to go to the Internal FM Status display. c. Step 2.
TROUBLESHOOTING TABLES TROUBLESHOOTING Table 5-27. Error Message 148 (2 of 2) Step 5. Reconnect cable W108 to A5J4 and disconnect cable W121 at A5J5. Step 6. Using the oscilloscope, verify the presence of a 10 MHz TTL signal at the end of cable W121. q q If present, replace the A5 PCB. If not present, go to step 7. Step 7. Reconnect cable W121 to A5J5 and disconnect it at A4J7. Step 8. Using the oscilloscope, verify the presence of a 10 MHz TTL signal at A4J7. q q Step 9.
Chapter 6 Removal and Replacement Procedures Table of Contents 6-1 INTRODUCTION . . . . . . . . . . . . . . . . . . . 6-3 6-2 REMOVING AND REPLACING THE CHASSIS COVERS . . . . . . . . . . . . . . . . . . . . . . . 6-4 Preliminary . . . . . . . . . . . . . . . . . . . 6-4 Procedure . . . . . . . . . . . . . . . . . . . . 6-4 6-3 REMOVING AND REPLACING THE FRONT PANEL ASSEMBLY . . . . . . . . . . . . . . . . . 6-6 Preliminary . . . . . . . . . . . . . . . . . . . 6-6 Procedure . . . . . . . . . . . . . .
Table of Contents (Continued) 6-8 REMOVING AND REPLACING THE A16 OR A17 PCB. . . . . . . . . . . . . . . . . . . . . . . 6-11 Preliminary. . . . . . . . . . . . . . . . . . . 6-11 Procedure . . . . . . . . . . . . . . . . . . . 6-11 6-9 REMOVING AND REPLACING THE A18 OR A19 PCB. . . . . . . . . . . . . . . . . . . . . . . 6-12 Preliminary . . . . . . . . . . . . . . . . . . 6-12 Procedure . . . . . . . . . . . . . . . . . . . 6-12 6-10 REMOVING AND REPLACING THE REAR PANEL ASSEMBLY . . . . . . . . . .
Chapter 6 Removal and Replacement Procedures 6-1 INTRODUCTION This chapter provides procedures for gaining access to the major 682XXB/683XXB assemblies, subassemblies, and components for troubleshooting or replacement. WARNING Hazardous voltages are present inside the 682XXB/683XXB whenever ac line power is connected. Turn off the unit and remove the line cord before removing any covers or panels.
REMOVAL AND REPLACEMENT PROCEDURES 6-2 REMOVING AND REPLACING THE CHASSIS COVERS NOTE The screws with green heads have metric threads. When it becomes necessary to replace any of these screws, always use the exact replacement green-headed screws (ANRITSU P/N 2000-560) to avoid damage to the instrument. 6-4 CHASSIS COVERS Troubleshooting procedures require removal of the top cover. Replacement of some 682XXB/683XXB assemblies and parts require removal of all covers.
REMOVAL AND REPLACEMENT PROCEDURES CHASSIS COVERS Step 12 Remove the screw that fastens the other side cover to the chassis. (The screw is located at the rear of the instrument.) Step 13 Remove the side cover and set it aside. Step 14 To replace the chassis covers, reverse the procedure used to remove them. Rear Feet (4) (2) Top Cover (2) Carrying Handle (2) Side Handle Cover 683MM29.CDR Figure 6-1.
REMOVAL AND REPLACEMENT PROCEDURES 6-3 REMOVING AND REPLACING THE FRONT PANEL ASSEMBLY NOTE The screws with green heads have metric threads. When it becomes necessary to replace any of these screws, always use the exact replacement green-headed screws (ANRITSU P/N 2000-560) to avoid damage to the instrument. 6-6 FRONT PANEL ASSEMBLY This paragraph provides instructions for removing and replacing the front panel assembly of the 682XXB/683XXB.
REMOVAL AND REPLACEMENT PROCEDURES Figure 6-2.
REMOVAL AND REPLACEMENT PROCEDURES 6-4 6-8 REMOVING AND REPLACING THE A3, A4, A5, OR A6 PCB A3, A4, A5, OR A6 PCB This paragraph provides instructions for removing and replacing the A3 Reference Loop PCB, the A4 Coarse Loop PCB, the A5 Fine Loop PCB, or the A6 Pulse Generator PCB, all of which are located in the RF housing (see Figure 6-3). Preliminary Disconnect the power cord from the unit and remove the top cover as described in paragraph 6-2.
REMOVAL AND REPLACEMENT PROCEDURES PCB AND COMPONENT LOCATOR DIAGRAM A21-1 BNC/AUX I/0 Connector PCB Rear Panel A21 Line Filter/ Rectifier PCB A21P2 Fan Assy. A19 Power Conditioner PCB A19P2 A18 Power Supply PCB A19 2-20 GHz YIG Oscillator A17 CPU PCB A16 CPU Interface PCB A15 Regulator PCB A18 Switched Filter Assy.
REMOVAL AND REPLACEMENT PROCEDURES 6-5 6-6 6-10 REMOVING AND REPLACING THE A7 PCB REMOVING AND REPLACING THE A8, A9, A10, A11, OR A12 PCB A7 PCB This paragraph provides instructions for removing and replacing the A7 YIG Loop PCB, which is located in the main card cage (see Figure 6-3). Preliminary Disconnect the power cord from the unit and remove the top cover as described in paragraph 6-2. Procedure Remove and replace the A7 PCB as follows: Step 1 Remove the main card cage cover and set aside.
REMOVAL AND REPLACEMENT PROCEDURES 6-7 6-8 REMOVING AND REPLACING THE A13, A14, OR A15 PCB REMOVING AND REPLACING THE A16 OR A17 PCB 682XXB/683XXB MM A13, A14, OR A15 PCB This paragraph provides instructions for removing and replacing the A13 YIG Driver PCB, the A14 SDM, SQM Driver PCB, or the A15 Regulator PCB, all of which are located in the main card cage (see Figure 6-3). Each of these PCB assemblies consists of a PCB and a PCB Heat Sink subassembly.
REMOVAL AND REPLACEMENT PROCEDURES 6-9 REMOVING AND REPLACING THE A18 OR A19 PCB A18 OR A19 PCB This paragraph provides instructions for removing and replacing the A18 Power Supply PCB or the A19 AC Line Conditioner PCB, both of which are located in the power supply housing assembly (see Figure 6-3). Preliminary Disconnect the power cord from the unit and remove the top cover as described in paragraph 6-2.
REMOVAL AND REPLACEMENT PROCEDURES 6-10 REMOVING AND REPLACING THE REAR PANEL ASSEMBLY REAR PANEL ASSEMBLY This paragraph provides instructions for removing and replacing the rear panel assembly of the 682XXB/683XXB. The rear panel assembly contains the A21 Line Filter/Rectifier PCB, the A21-1 BNC/AUX I/O Connector PCB, the line module assembly, and the fan assembly. Refer to Figure 6-4 during this procedure.
REMOVAL AND REPLACEMENT PROCEDURES 6-14 REAR PANEL ASSEMBLY Step 9 Disconnect the cable assembly from the A21 Line Filter/Rectifier PCB at connector P2 on the A19 PCB. Step 10 Carefully pull the rear panel assembly away from the signal generator chassis until the cable connections to the Motherboard are accessable. Step 11 Disconnect the fan cable connector from J13 on the Motherboard. Step 12 Disconnect the A21-1 PCB ribbon cable connector from J14 on the Motherboard.
REMOVAL AND REPLACEMENT PROCEDURES Figure 6-4.
REMOVAL AND REPLACEMENT PROCEDURES 6-11 REMOVING AND REPLACING THE A21 PCB A21 PCB This paragraph provides instructions for removing and replacing the A21 Line Filter/Rectifier PCB, which is located on the rear panel assembly (see Figure 6-4). Preliminary Disconnect the power cord from the unit. Remove the chassis covers as described in paragraph 6-2. Remove the rear panel assembly as described in paragraph 6-10.
REMOVAL AND REPLACEMENT PROCEDURES 6-12 REMOVING AND REPLACING THE A21-1 PCB A21-1 PCB This paragraph provides instructions for removing and replacing the A21-1 BNC/AUX I/O Connector PCB, which is located on the rear panel assembly (see Figure 6-4). Preliminary Disconnect the power cord from the unit. Remove the chassis covers as described in paragraph 6-2. Remove the rear panel assembly as described in paragraph 6-10.
REMOVAL AND REPLACEMENT PROCEDURES 6-13 REMOVING AND REPLACING THE FAN ASSEMBLY FAN ASSEMBLY This paragraph provides instructions for removing and replacing the fan assembly, which is located on the rear panel assembly (see Figure 6-4). Preliminary Disconnect the power cord from the unit. Remove the chassis covers as described in paragraph 6-2. Remove the rear panel assembly as described in paragraph 6-10.
Appendix A Test Records A-1 INTRODUCTION This appendix provides test records for recording the results of the Performance Verification tests (Chapter 3) and the Calibration procedures (Chapter 4). They jointly provide the means for maintaining an accurate and complete record of instrument performance. Test records are provided for all models of the Series 682XXB/683XXB Synthesized Signal Generators. Table A-1provides the location of each test record in this appendix.
ANRITSU Model 68237B/68337B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68237B/68337B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Fine Loop Test Procedure (Standard 68X37B) Test Frequency (in GHz) Measured Value ** 2.000 000 000 _____________________ 2.000 001 000 _____________________ 3.000 000 000 _____________________ 2.000 002 000 _____________________ 4.000 000 000 _____________________ 2.000 003 000 _____________________ 5.000 000 000 _____________________ 2.
TEST RECORD MODEL 68237B/68337B 3-8 Spurious Signals Test: RF Output Signals <2 GHz This test is not applicable to the 68237B/68337B model. 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz Test Procedure (2 to 10 GHz) Measured Value Upper Limit Set F1 to 2.1 GHz Record the level of all harmonics of the 2.1 GHz carrier: 4.2 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 6.3 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68237B/68337B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz (Continued) Test Procedure (11 to 20 GHz) Measured Value Upper Limit Set F1 to 12.4 GHz Record the level of all harmonics of the 12.4 GHz carrier: 24.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 37.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* Set F1 to 16.0 GHz Record the level of all harmonics of the 16.
TEST RECORD MODEL 68237B/68337B 3-10 Single Sideband Phase Noise Test Test Procedure Measured Value Upper Limit Set F1 to 2.0 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –77 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –85 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –83 dBc 100 kHz . . . . . . . . . . . . . . .
TEST RECORD MODEL 68237B/68337B 3-11 Power Level Accuracy and Flatness Tests (Model 68237B/68337B without Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.
TEST RECORD MODEL 68237B/68337B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68237B/68337B with Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.
TEST RECORD MODEL 68237B/68337B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68237B/68337B with Option 15B High Power & without Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.
TEST RECORD MODEL 68237B/68337B 3-11 Power Level Accuracy And Flatness Tests (Continued) (Model 68237B/68337B with Option 15B High Power & Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.
TEST RECORD MODEL 68237B/68337B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68237B/68337B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68237B/68337B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68237B/68337B 3-15 Pulse Modulation Test: Video Feedthrough Test Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Set pulse width W1 to 5.0 ms Set PRI (period) to 0.01 ms Measure and record the Video Feedthrough voltage spikes . . . . –10 mV _______ mV +10 mV Lower Limit Measured Value Upper Limit 60 dB _______dB N/A Measured Value Upper Limit 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure Set F1 to 5.
ANRITSU Model 68237B/68337B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68237B/68337B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68337B having Firmware Version 1.01 to 2.00) Procedure Step Step Completion 5. ALC Slope DAC adjustment for £2 GHz (This step is not applicable to the 68337B) . . . . . . . . . . . . . . . . . . . . . . . _____N/A______ 9. ALC Slope DAC adjustment for >2 GHz . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68237B/68337B 4-13 FM Calibration (68237B/68337B with Firmware Version 1.01 to 2.10) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68237B/68337B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68245B/68345B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . ______________ Record frequency error value (after 24 hours) . . . . . . . . . . . ______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68245B/68345B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Fine Loop Test Procedure (Standard 68X45B) Test Frequency (in GHz) Measured Value ** 1.000 000 000 _____________________ 1.000 001 000 _____________________ 2.000 000 000 _____________________ 1.000 002 000 _____________________ 3.000 000 000 _____________________ 1.000 003 000 _____________________ 4.000 000 000 _____________________ 1.
TEST RECORD MODEL 68245B/68345B 3-8 Spurious Signals Test: RF Output Signals £2.2 GHz Test Procedure Measured Value Upper Limit Set F1 to 500 MHz Record the level of all harmonics of the 500 MHz carrier 1.0 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 1.5 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 2.0 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 2.
TEST RECORD MODEL 68245B/68345B 3-9 Harmonic Test: RF Output Signals From 2.2 to 20 GHz Test Procedure (2.2 to 10 GHz) Measured Value Upper Limit Set F1 to 2.4 GHz Record the level of all harmonics of the 2.4 GHz carrier: 4.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 7.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 9.6 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68245B/68345B 3-9 Harmonic Test: RF Output Signals From 2.2 to 20 GHz (Continued) Test Procedure (11 to 20 GHz) Measured Value Upper Limit Set F1 to 12.4 GHz Record the level of all harmonics of the 12.4 GHz carrier: 24.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 37.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* Set F1 to 16.0 GHz Record the level of all harmonics of the 16.
TEST RECORD MODEL 68245B/68345B 3-10 Single Sideband Phase Noise Test Test Procedure Measured Value Upper Limit Set F1 to 0.6 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –84 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –97 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –95 dBc 100 kHz . . . . . . . . . . . . . . .
TEST RECORD MODEL 68245B/68345B 3-11 Power Level Accuracy and Flatness Tests (Model 68245B/68345B without Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.
TEST RECORD MODEL 68245B/68345B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68245B/68345B with Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.
TEST RECORD MODEL 68245B/68345B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68245B/68345B with Option 15B High Power & without Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.
TEST RECORD MODEL 68245B/68345B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68245B/68345B with Option 15B High Power & Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.
TEST RECORD MODEL 68245B/68345B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68245B/68345B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 69245A/69345A . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68245B/68345B 3-14 Pulse Modulation Tests: Rise Time, Fall Time, Overshoot, and Level (Continued) Pulse Level Accuracy (5 GHz, Pulse Width = 0.5 ms) Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Set pulse width W1 to 5.0 ms Record the displayed output level L1 (step 5.b) . . . . . . . . . . . . . . . . . . . . _______ dBm Record the displayed output level L1 (step 5.d) . . . . . . . . . . . . . . . . . . . . _______ dBm Calculate and record the pulse level error. . . .
TEST RECORD MODEL 68245B/68345B 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure (1 GHz) Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A 60 dB _______ dB N/A Set F1 to 1.10 GHz Measure and record the peak of the signal on the Spectrum Analyzer. (Measured signal must be >60 dB below top graticule to meet specification; this represents an On/Off Ratio of >80 dB.) . Test Procedure (5 GHz) Set F1 to 5.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer.
ANRITSU Model 68245B/68345B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68245B/68345B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68345B having Firmware Version 1.00 and above) Procedure Step Step Completion 5. ALC Slope DAC adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 6. Store the DAC setting value(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68245B/68345B 4-13 FM Calibration (68245B/68345B with Firmware Version 1.00) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68245B/68345B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68247B/68347B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . ______________ Record frequency error value (after 24 hours) . . . . . . . . . . . ______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68247B/68347B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Fine Loop Test Procedure (Standard 68X47B) Test Frequency (in GHz) Measured Value ** 1.000 000 000 _____________________ 1.000 001 000 _____________________ 2.000 000 000 _____________________ 1.000 002 000 _____________________ 3.000 000 000 _____________________ 1.000 003 000 _____________________ 4.000 000 000 _____________________ 1.
TEST RECORD MODEL 68247B/68347B 3-8 Spurious Signals Test: RF Output Signals <2 GHz Test Procedure Measured Value Upper Limit Set F1 to 10 MHz Record the presence of the worst case harmonic . . . . . . . . . . _______________dBc –30 dBc Record the presence of the worst case non-harmonic . . . . . . . _______________dBc –40 dBc Set F1 to 20 MHz Record the presence of the worst case harmonic . . . . . . . . . . _______________dBc –30 dBc Record the presence of the worst case non-harmonic . . . .
TEST RECORD MODEL 68247B/68347B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz Test Procedure (2 to 10 GHz) Measured Value Upper Limit Set F1 to 2.1 GHz Record the level of all harmonics of the 2.1 GHz carrier: 4.2 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 6.3 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 8.4 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68247B/68347B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz (Continued) Test Procedure (11 to 20 GHz) Measured Value Upper Limit Set F1 to 12.4 GHz Record the level of all harmonics of the 12.4 GHz carrier: 24.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 37.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* Set F1 to 16.0 GHz Record the level of all harmonics of the 16.
TEST RECORD MODEL 68247B/68347B 3-10 Single Sideband Phase Noise Test Test Procedure Measured Value Upper Limit Set F1 to 0.6 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –74 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –85 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –82 dBc 100 kHz . . . . . . . . . . . . . . .
TEST RECORD MODEL 68247B/68347B 3-11 Power Level Accuracy and Flatness Tests (Model 68247B/68347B without Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.
TEST RECORD MODEL 68247B/68347B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68247B/68347B with Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.
TEST RECORD MODEL 68247B/68347B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68247B/68347B with Option 15B High Power & without Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.
TEST RECORD MODEL 68247B/68347B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68247B/68347B with Option 15B High Power & Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.
TEST RECORD MODEL 68247B/68347B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68247B/68347B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68247B/68347B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68247B/68347B 3-14 Pulse Modulation Tests: Rise Time, Fall Time, Overshoot, and Level (Continued) Pulse Level Accuracy (5 GHz, Pulse Width = 0.5 ms) Lower Limit Measured Value Record the displayed output level L1 (step 5.b) . . . . . . . . . . . . . . . . . . . . _______ dBm Record the displayed output level L1 (step 5.d) . . . . . . . . . . . . . . . . . . . . _______ dBm Calculate and record the pulse level error. . . . . . . . . . . . . . _______ dB Upper Limit Set F1 to 5.
TEST RECORD MODEL 68247B/68347B 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure (1 GHz) Lower Limit Measured Value Upper Limit 60 dB _______dB N/A 60 dB _______dB N/A Set F1 to 1.10 GHz Measure and record the peak of the signal on the Spectrum Analyzer. (Measured signal must be >60 dB below top graticule to meet specification; this represents an On/Off Ratio of >80 dB.) . Test Procedure (5 GHz) Set F1 to 5.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer.
ANRITSU Model 68247B/68347B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68247B/68347B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68347B having Firmware Version 1.01 to 2.00) Procedure Step Step Completion 5. ALC Slope DAC adjustment for 2 GHz . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 9. ALC Slope DAC adjustment for >2 GHz . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 10.
TEST RECORD MODEL 68247B/68347B 4-13 FM Calibration (68247B/68347B with Firmware Version 1.01 to 2.10) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68247B/68347B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68253B/68353B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68253B/68353B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 2.000 000 000 _____________________ 21.000 000 000 _____________________ 3.000 000 000 _____________________ 22.000 000 000 _____________________ 4.000 000 000 _____________________ 23.000 000 000 _____________________ 5.000 000 000 _____________________ 24.000 000 000 _____________________ 6.
TEST RECORD MODEL 68253B/68353B 3-7 Frequency Synthesis Tests Fine Loop Test Procedure (Standard 68X53B) Test Frequency (in GHz) Measured Value ** Fine Loop Test Procedure (68X53B with Option 11) Test Frequency (in GHz) Measured Value *** 2.000 001 000 _____________________ 2.000 000 100 _____________________ 2.000 002 000 _____________________ 2.000 000 200 _____________________ 2.000 003 000 _____________________ 2.000 000 300 _____________________ 2.
TEST RECORD MODEL 68253B/68353B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz Test Procedure (2 to 10 GHz) Measured Value Upper Limit Set F1 to 2.1 GHz Record the level of all harmonics of the 2.1 GHz carrier: 4.2 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 6.3 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 8.4 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68253B/68353B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz (Continued) Test Procedure (11 to 20 GHz) Measured Value Upper Limit Set F1 to 12.4 GHz Record the level of all harmonics of the 12.4 GHz carrier: 24.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 37.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* Set F1 to 16.0 GHz Record the level of all harmonics of the 16.
TEST RECORD MODEL 68253B/68353B 3-10 Single Sideband Phase Noise Test Test Procedure Measured Value Upper Limit Set F1 to 2.0 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –77 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –85 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –83 dBc 100 kHz . . . . . . . . . . . . . . .
TEST RECORD MODEL 68253B/68353B 3-11 Power Level Accuracy and Flatness Tests (Model 68253B/68353B without Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 22.
TEST RECORD MODEL 68253B/68353B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68253B/68353B with Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 22.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * + 7 dBm _________dBm + 3.5 dBm _________dBm + 6 dBm _________dBm + 2.5 dBm _________dBm + 5 dBm _________dBm + 1.5 dBm _________dBm + 4 dBm _________dBm + 0.5 dBm _________dBm + 3 dBm _________dBm – 0.
TEST RECORD MODEL 68253B/68353B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68253B/68353B with Option 15B High Power & without Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 22.
TEST RECORD MODEL 68253B/68353B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68253B/68353B with Option 15B High Power & Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 22.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * +11 dBm _________dBm + 7.5 dBm _________dBm +10 dBm _________dBm + 6.5 dBm _________dBm + 9 dBm _________dBm + 5.5 dBm _________dBm + 8 dBm _________dBm + 4.
TEST RECORD MODEL 68253B/68353B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68253B/68353B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68253B/68353B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68253B/68353B 3-15 Pulse Modulation Test: Video Feedthrough Test Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Set pulse width W1 to 5.0 ms Set PRI (period) to 0.01 ms Measure and record the Video Feedthrough voltage spikes . . . . –10 mV _______ mV +10 mV Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure Set F1 to 5.
ANRITSU Model 68253B/68353B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68253B/68353B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68353B having Firmware Version 1.01 to 2.00) Procedure Step Step Completion 5. ALC Slope DAC adjustment for £2 GHz (This step is not applicable to the 68353B) . . . . . . . . . . . . . . . . . . . . . . . _____N/A______ 9. ALC Slope DAC adjustment for >2 GHz . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68253B/68353B 4-13 FM Calibration (68253B/68353B with Firmware Version 1.01 to 2.10) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68253B/68353B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68255B/68355B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68255B/68355B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 1.000 000 000 _____________________ 21.000 000 000 _____________________ 2.000 000 000 _____________________ 22.000 000 000 _____________________ 3.000 000 000 _____________________ 23.000 000 000 _____________________ 4.000 000 000 _____________________ 24.000 000 000 _____________________ 5.
TEST RECORD MODEL 68255B/68355B 3-7 Frequency Synthesis Tests Fine Loop Test Procedure (Standard 68X55B) Test Frequency (in GHz) Measured Value ** Fine Loop Test Procedure (68X55B with Option 11) Test Frequency (in GHz) Measured Value *** 1.000 001 000 _____________________ 1.000 000 100 _____________________ 1.000 002 000 _____________________ 1.000 000 200 _____________________ 1.000 003 000 _____________________ 1.000 000 300 _____________________ 1.
TEST RECORD MODEL 68255B/68355B 3-8 Spurious Signals Test: RF Output Signals £2.2 GHz Test Procedure Measured Value Upper Limit Set F1 to 500 MHz Record the level of all harmonics of the 500 MHz carrier 1.0 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 1.5 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 2.0 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 2.
TEST RECORD MODEL 68255B/68355B 3-9 Harmonic Test: RF Output Signals From 2.2 to 20 GHz Test Procedure (2.2 to 10 GHz) Measure Value Upper Limit Set F1 to 2.4 GHz Record the level of all harmonics of the 2.4 GHz carrier: 4.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 7.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 9.6 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD Test Procedure (11 to 20 GHz) MODEL 68255B/68355B Measure Value Upper Limit Set F1 to 12.4 GHz Record the level of all harmonics of the 12.4 GHz carrier: 24.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 37.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* Set F1 to 16.0 GHz Record the level of all harmonics of the 16.0 GHz carrier: 32.0 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68255B/68355B 3-10 Single Sideband Phase Noise Test (Continued) Test Procedure Measured Value Upper Limit Set F1 to 6.0 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –75 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –85 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –83 dBc 100 kHz . . . . . . . . .
TEST RECORD MODEL 68255B/68355B 3-11 Power Level Accuracy and Flatness Tests (Model 68255B/68355B without Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 22.
TEST RECORD MODEL 68255B/68355B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68255B/68355B with Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 22.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * +11 dBm _________dBm + 7 dBm _________dBm + 3.5 dBm _________dBm +10 dBm _________dBm + 6 dBm _________dBm + 2.
TEST RECORD MODEL 68255B/68355B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68255B/68355B with Option 15B High Power & without Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 22.
TEST RECORD MODEL 68255B/68355B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68255B/68355B with Option 15B High Power & Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 22.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * +11 dBm _________dBm +11 dBm _________dBm + 7.5 dBm _________dBm +10 dBm _________dBm +10 dBm _________dBm + 6.
TEST RECORD MODEL 68255B/68355B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68255B/68355B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68255B/68355B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68255B/68355B 3-14 Pulse Modulation Tests: Rise Time, Fall Time, Overshoot, and Level (Continued) Pulse Level Accuracy (5 GHz, Pulse Width = 0.5 ms) Lower Limit Measured Value Record the displayed output level L1 (step 5.b) . . . . . . . . . . . . . . . . . . . . _______ dBm Record the displayed output level L1 (step 5.d) . . . . . . . . . . . . . . . . . . . . _______ dBm Calculate and record the pulse level error. . . . . . . . . . . . . . _______ dB Upper Limit Set F1 to 5.
TEST RECORD MODEL 68255B/68355B 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure (1 GHz) Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A 60 dB _______ dB N/A Set F1 to 1.10 GHz Measure and record the peak of the signal on the Spectrum Analyzer. (Measured signal must be >60 dB below top graticule to meet specification; this represents an On/Off Ratio of >80 dB.) . Test Procedure (5 GHz) Set F1 to 5.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer.
ANRITSU Model 68255B/68355B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68255B/68355B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68355B having Firmware Version 1.00 and above) Procedure Step Step Completion 5. ALC Slope DAC adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 6. Store the DAC setting value(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68255B/68355B 4-13 FM Calibration (68255B/68355B with Firmware Version 1.00) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68255B/68355B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FΜ Μοδε Σενσιτιϖιτψ Χαλιβρατιον (χαλτερµ 149). . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . . .
ANRITSU Model 68259B/68359B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68259B/68359B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 1.000 000 000 _____________________ 21.000 000 000 _____________________ 2.000 000 000 _____________________ 22.000 000 000 _____________________ 3.000 000 000 _____________________ 23.000 000 000 _____________________ 4.000 000 000 _____________________ 24.000 000 000 _____________________ 5.
TEST RECORD MODEL 68259B/68359B 3-7 Frequency Synthesis Tests Fine Loop Test Procedure (Standard 68X59B) Test Frequency (in GHz) Measured Value ** Fine Loop Test Procedure (68X59B with Option 11) Test Frequency (in GHz) Measured Value *** 1.000 001 000 _____________________ 1.000 000 100 _____________________ 1.000 002 000 _____________________ 1.000 000 200 _____________________ 1.000 003 000 _____________________ 1.000 000 300 _____________________ 1.
TEST RECORD MODEL 68259B/68359B 3-8 Spurious Signals Test: RF Output Signals <2 GHz Test Procedure Measured Value Upper Limit Set F1 to 10 MHz Record the presence of the worst case harmonic . . . . . . . . . . _______________dBc –30 dBc Record the presence of the worst case non-harmonic . . . . . . . _______________dBc –40 dBc Set F1 to 20 MHz Record the presence of the worst case harmonic . . . . . . . . . . _______________dBc –30 dBc Record the presence of the worst case non-harmonic . . . .
TEST RECORD MODEL 68259B/68359B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz Test Procedure (2 to 10 GHz) Measure Value Upper Limit Set F1 to 2.1 GHz Record the level of all harmonics of the 2.1 GHz carrier: 4.2 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 6.3 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 8.4 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD Test Procedure (11 to 20 GHz) MODEL 68259B/68359B Measure Value Upper Limit Set F1 to 12.4 GHz Record the level of all harmonics of the 12.4 GHz carrier: 24.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 37.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* Set F1 to 16.0 GHz Record the level of all harmonics of the 16.0 GHz carrier: 32.0 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68259B/68359B 3-10 Single Sideband Phase Noise Test (Continued) Test Procedure Measured Value Upper Limit Set F1 to 6.0 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –75 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –85 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –83 dBc 100 kHz . . . . . . . . .
TEST RECORD MODEL 68259B/68359B 3-11 Power Level Accuracy and Flatness Tests (Model 68259B/68359B without Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 22.
TEST RECORD MODEL 68259B/68359B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68259B/68359B with Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 22.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * +11 dBm _________dBm + 7 dBm _________dBm + 3.5 dBm _________dBm +10 dBm _________dBm + 6 dBm _________dBm + 2.
TEST RECORD MODEL 68259B/68359B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68259B/68359B with Option 15B High Power & without Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 22.
TEST RECORD MODEL 68259B/68359B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68259B/68359B with Option 15B High Power & Option 2A Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 22.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * +11 dBm _________dBm +11 dBm _________dBm + 7.5 dBm _________dBm +10 dBm _________dBm +10 dBm _________dBm + 6.
TEST RECORD MODEL 68259B/68359B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68259B/68359B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68259B/68359B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________% Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68259B/68359B 3-14 Pulse Modulation Tests: Rise Time, Fall Time, Overshoot, and Level (Continued) Pulse Level Accuracy (5 GHz, Pulse Width = 0.5 ms) Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Set pulse width W1 to 5.0 ms Record the displayed output level L1 (step 5.b) . . . . . . . . . . . . . . . . . . . . _______ dBm Record the displayed output level L1 (step 5.d) . . . . . . . . . . . . . . . . . . . . _______ dBm Calculate and record the pulse level error. . . .
TEST RECORD MODEL 68259B/68359B 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure (1 GHz) Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A 60 dB _______ dB N/A Set F1 to 1.10 GHz Measure and record the peak of the signal on the Spectrum Analyzer. (Measured signal must be >60 dB below top graticule to meet specification; this represents an On/Off Ratio of >80 dB.) . Test Procedure (5 GHz) Set F1 to 5.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer.
ANRITSU Model 68259B/68359B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68259B/68359B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68359B having Firmware Version 1.01 to 2.00) Procedure Step Step Completion 5. ALC Slope DAC adjustment for 2 GHz . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 9. ALC Slope DAC adjustment for >2 GHz . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 10.
TEST RECORD MODEL 68259B/68359B 4-13 FM Calibration (68259B/68359B with Firmware Version 1.01 to 2.10) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68259B/68359B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68263B/68363B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68263B/68363B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 2.000 000 000 _____________________ 21.000 000 000 _____________________ 3.000 000 000 _____________________ 22.000 000 000 _____________________ 4.000 000 000 _____________________ 23.000 000 000 _____________________ 5.000 000 000 _____________________ 24.000 000 000 _____________________ 6.
TEST RECORD MODEL 68263B/68363B 3-7 Frequency Synthesis Tests Fine Loop Test Procedure (Standard 68X63B) Test Frequency (in GHz) Measured Value ** Fine Loop Test Procedure (68X63Bwith Option 11) Test Frequency (in GHz) Measured Value *** 2.000 001 000 _____________________ 2.000 000 100 _____________________ 2.000 002 000 _____________________ 2.000 000 200 _____________________ 2.000 003 000 _____________________ 2.000 000 300 _____________________ 2.000 004 000 _____________________ 2.
TEST RECORD MODEL 68263B/68363B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz Test Procedure (2 to 10 GHz) Measured Value Upper Limit Set F1 to 2.1 GHz Record the level of all harmonics of the 2.1 GHz carrier: 4.2 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 6.3 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 8.4 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68263B/68363B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz (Continued) Test Procedure (11 to 20 GHz) Measured Value Upper Limit Set F1 to 12.4 GHz Record the level of all harmonics of the 12.4 GHz carrier: 24.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 37.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* Set F1 to 16.0 GHz Record the level of all harmonics of the 16.
TEST RECORD MODEL 68263B/68363B 3-10 Single Sideband Phase Noise Test Test Procedure Measured Value Upper Limit Set F1 to 2.0 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –77 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –85 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –83 dBc 100 kHz . . . . . . . . . . . . . . .
TEST RECORD MODEL 68263B/68363B 3-11 Power Level Accuracy and Flatness Tests (Model 68263B/68363B without Option 2B Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.
TEST RECORD MODEL 68263B/68363B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68263B/68363B with Option 2B Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.
TEST RECORD MODEL 68263B/68363B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68263B/68363B with Option 15B High Power & without Option 2B Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.
TEST RECORD MODEL 68263B/68363B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68263B/68363B with Option 15B High Power & Option 2B Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.
TEST RECORD MODEL 68263B/68363B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68263B/68363B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68263B/68363B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68263B/68363B 3-15 Pulse Modulation Test: Video Feedthrough Test Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Set pulse width W1 to 5.0 ms Set PRI (period) to 0.01 ms Measure and record the Video Feedthrough voltage spikes . . . . –10 mV _______ mV +10 mV Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A Measured Value Upper Limit 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure Set F1 to 5.
ANRITSU Model 68263B/68363B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68263B/68363B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68363B having Firmware Version 1.01 to 2.00) Procedure Step Step Completion 5. ALC Slope DAC adjustment for £2 GHz (This step is not applicable to the 68363B) . . . . . . . . . . . . . . . . . . . . . . . _____N/A______ 9. ALC Slope DAC adjustment for >2 GHz . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68263B/68363B 4-13 FM Calibration (68263B/68363B with Firmware Version 1.01 to 2.10) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68263B/68363B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68265B/68365B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68265B/68365B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 1.000 000 000 _____________________ 21.000 000 000 _____________________ 2.000 000 000 _____________________ 22.000 000 000 _____________________ 3.000 000 000 _____________________ 23.000 000 000 _____________________ 4.000 000 000 _____________________ 24.000 000 000 _____________________ 5.
TEST RECORD MODEL 68265B/68365B 3-7 Frequency Synthesis Tests Fine Loop Test Procedure (Standard 68X65B) Test Frequency (in Ghz) Measured Value ** Fine Loop Test Procedure (68X65B with Option 11) Test Frequency (in Ghz) Measured Value *** 1.000 001 000 _____________________ 1.000 000 100 _____________________ 1.000 002 000 _____________________ 1.000 000 200 _____________________ 1.000 003 000 _____________________ 1.000 000 300 _____________________ 1.
TEST RECORD MODEL 68265B/68365B 3-8 Spurious Signals Test: RF Output Signals £2.2 GHz Test Procedure Measured Value Upper Limit Set F1 to 500 MHz Record the level of all harmonics of the 500 MHz carrier 1.0 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 1.5 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 2.0 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 2.
TEST RECORD MODEL 68265B/68365B 3-9 Harmonic Test: RF Output Signals From 2.2 to 20 GHz Test Procedure (2.2 to 10 GHz) Measure Value Upper Limit Set F1 to 2.4 GHz Record the level of all harmonics of the 2.4 GHz carrier: 4.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 7.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 9.6 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68265B/68365B 3-9 Harmonic Test: RF Output Signals From 2.2 to 20 GHz (Continued) Test Procedure (11 to 20 GHz) Measure Value Upper Limit Set F1 to 12.4 GHz Record the level of all harmonics of the 12.4 GHz carrier: 24.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 37.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* Set F1 to 16.0 GHz Record the level of all harmonics of the 16.
TEST RECORD MODEL 68265B/68365B 3-10 Single Sideband Phase Noise Test (Continued) Test Procedure Measured Value Upper Limit Set F1 to 6.0 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –75 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –85 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –83 dBc 100 kHz . . . . . . . . .
TEST RECORD MODEL 68265B/68365B 3-11 Power Level Accuracy and Flatness Tests (Model 68265B/68365B without Option 2B Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 25.
TEST RECORD MODEL 68265B/68365B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68265B/68365B with Option 2B Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 25.
TEST RECORD MODEL 68265B/68365B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68265B/68365B with Option 15B High Power & without Option 2B Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 25.
TEST RECORD MODEL 68265B/68365B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68265B/68365B with Option 15B High Power & Option 2B Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 25.
TEST RECORD MODEL 68265B/68365B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68265B/68365B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68265B/68365B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68265B/68365B 3-14 Pulse Modulation Tests: Rise Time, Fall Time, Overshoot, and Level (Continued) Pulse Level Accuracy (5 GHz, Pulse Width = 0.5 ms) Lower Limit Measured Value Record the displayed output level L1 (step 5.b) . . . . . . . . . . . . . . . . . . . . _______ dBm Record the displayed output level L1 (step 5.d) . . . . . . . . . . . . . . . . . . . . _______ dBm Calculate and record the pulse level error. . . . . . . . . . . . . . _______ dB Upper Limit Set F1 to 5.
TEST RECORD MODEL 68265B/68365B 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure (1 GHz) Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A 60 dB _______ dB N/A Set F1 to 1.10 GHz Measure and record the peak of the signal on the Spectrum Analyzer. (Measured signal must be >60 dB below top graticule to meet specification; this represents an On/Off Ratio of >80 dB.) . Test Procedure (5 GHz) Set F1 to 5.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer.
ANRITSU Model 68265B/68365B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68265B/68365B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68365B having Firmware Version 1.00 and above) Procedure Step Step Completion 5. ALC Slope DAC adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 6. Store the DAC setting value(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68265B/68365B 4-13 FM Calibration (68265B/68365B with Firmware Version 1.00) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68265B/68365B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68269B/68369B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68269B/68369B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 1.000 000 000 _____________________ 21.000 000 000 _____________________ 2.000 000 000 _____________________ 22.000 000 000 _____________________ 3.000 000 000 _____________________ 23.000 000 000 _____________________ 4.000 000 000 _____________________ 24.000 000 000 _____________________ 5.
TEST RECORD MODEL 68269B/68369B 3-7 Frequency Synthesis Tests Fine Loop Test Procedure (Standard 68X69B) Test Frequency (in Ghz) Measured Value ** Fine Loop Test Procedure (68X69B with Option 11) Test Frequency (in Ghz) Measured Value *** 1.000 001 000 _____________________ 1.000 000 100 _____________________ 1.000 002 000 _____________________ 1.000 000 200 _____________________ 1.000 003 000 _____________________ 1.000 000 300 _____________________ 1.
TEST RECORD MODEL 68269B/68369B 3-8 Spurious Signals Test: RF Output Signals <2 GHz Test Procedure Measured Value Upper Limit Set F1 to 10 MHz Record the presence of the worst case harmonic . . . . . . . . . . _______________dBc –30 dBc Record the presence of the worst case non-harmonic . . . . . . . _______________dBc –40 dBc Set F1 to 20 MHz Record the presence of the worst case harmonic . . . . . . . . . . _______________dBc –30 dBc Record the presence of the worst case non-harmonic . . . .
TEST RECORD MODEL 68269B/68369B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz Test Procedure (2 to 10 GHz) Measure Value Upper Limit Set F1 to 2.1 GHz Record the level of all harmonics of the 2.1 GHz carrier: 4.2 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 6.3 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 8.4 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68269B/68369B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz (Continued) Test Procedure (11 to 20 GHz) Measure Value Upper Limit Set F1 to 12.4 GHz Record the level of all harmonics of the 12.4 GHz carrier: 24.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* 37.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc* Set F1 to 16.0 GHz Record the level of all harmonics of the 16.
TEST RECORD MODEL 68269B/68369B 3-10 Single Sideband Phase Noise Test (Continued) Test Procedure Measured Value Upper Limit Set F1 to 6.0 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –75 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –85 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –83 dBc 100 kHz . . . . . . . . .
TEST RECORD MODEL 68269B/68369B 3-11 Power Level Accuracy and Flatness Tests (Model 68269B/68369B without Option 2B Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 25.
TEST RECORD MODEL 68269B/68369B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68269B/68369B with Option 2B Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 25.
TEST RECORD MODEL 68269B/68369B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68269B/68369B with Option 15B High Power & without Option 2B Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 25.
TEST RECORD MODEL 68269B/68369B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68269B/68369B with Option 15B High Power & Option 2B Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 1.0 GHz Set F1 to 5.0 GHz Set F1 to 25.
TEST RECORD MODEL 68269B/68369B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68269B/68369B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68269B/68369B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68269B/68369B 3-14 Pulse Modulation Tests: Rise Time, Fall Time, Overshoot, and Level (Continued) Pulse Level Accuracy (5 GHz, Pulse Width = 0.5 ms) Lower Limit Measured Value Record the displayed output level L1 (step 5.b) . . . . . . . . . . . . . . . . . . . . _______ dBm Record the displayed output level L1 (step 5.d) . . . . . . . . . . . . . . . . . . . . _______ dBm Calculate and record the pulse level error. . . . . . . . . . . . . . _______ dB Upper Limit Set F1 to 5.
TEST RECORD MODEL 68269B/68369B 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure (1 GHz) Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A 60 dB _______ dB N/A Set F1 to 1.10 GHz Measure and record the peak of the signal on the Spectrum Analyzer. (Measured signal must be >60 dB below top graticule to meet specification; this represents an On/Off Ratio of >80 dB.) . Test Procedure (5 GHz) Set F1 to 5.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer.
ANRITSU Model 68269B/68369B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68269B/68369B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68369B having Firmware Version 1.01 to 2.00) Procedure Step Step Completion 5. ALC Slope DAC adjustment for £2 GHz . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 9. ALC Slope DAC adjustment for >2 GHz . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 10.
TEST RECORD MODEL 68269B/68369B 4-13 FM Calibration (68269B/68369B with Firmware Version 1.01 to 2.10) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68269B/68369B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68275B/68375B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68275B/68375B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 1.000 000 000 _____________________ 26.000 000 000 _____________________ 2.000 000 000 _____________________ 27.000 000 000 _____________________ 3.000 000 000 _____________________ 28.000 000 000 _____________________ 4.000 000 000 _____________________ 29.000 000 000 _____________________ 5.
TEST RECORD MODEL 68275B/68375B 3-7 Frequency Synthesis Tests Fine Loop Test Procedure (Standard 68X75B) Test Frequency (in Ghz) Measured Value ** Fine Loop Test Procedure (68X75B with Option 11) Test Frequency (in Ghz) Measured Value *** 1.000 001 000 _____________________ 1.000 000 100 _____________________ 1.000 002 000 _____________________ 1.000 000 200 _____________________ 1.000 003 000 _____________________ 1.000 000 300 _____________________ 1.
TEST RECORD MODEL 68275B/68375B 3-8 Spurious Signals Test: RF Output Signals £2.2 GHz Test Procedure Measured Value Upper Limit Set F1 to 500 MHz Record the level of all harmonics of the 500 MHz carrier 1.0 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 1.5 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 2.0 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 2.
TEST RECORD MODEL 68275B/68375B 3-9 Harmonic Test: RF Output Signals From 2.2 to 20 GHz Test Procedure (2.2 to 10 GHz) Measure Value Upper Limit Set F1 to 2.4 GHz Record the level of all harmonics of the 2.4 GHz carrier: 4.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 7.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 9.6 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68275B/68375B 3-10 Single Sideband Phase Noise Test Test Procedure Measured Value Upper Limit Set F1 to 0.6 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –84 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –97 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –95 dBc 100 kHz . . . . . . . . . . . . . . .
TEST RECORD MODEL 68275B/68375B 3-10 Single Sideband Phase Noise Test (Continued) Test Procedure Measured Value Upper Limit Set F1 to 26.5 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –75 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –73 dBc 100 kHz . . . . . . . .
TEST RECORD MODEL 68275B/68375B 3-11 Power Level Accuracy and Flatness Tests (Model 68275B/68375B without Option 2C Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.0 GHz Set F1 to 45.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * +10 dBm _________dBm + 2.5 dBm _________dBm + 2.5 dBm _________dBm + 9 dBm _________dBm + 1.5 dBm _________dBm + 1.5 dBm _________dBm + 8 dBm _________dBm + 0.
TEST RECORD MODEL 68275B/68375B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68275B/68375B with Option 2C Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.0 GHz Set F1 to 45.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * + 8.5 dBm _________dBm + 0 dBm _________dBm – 1 dBm _________dBm + 7.5 dBm _________dBm – 1 dBm _________dBm – 2 dBm _________dBm + 6.
TEST RECORD MODEL 68275B/68375B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68275B/68375B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68275B/68375B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68275B/68375B 3-14 Pulse Modulation Tests: Rise Time, Fall Time, Overshoot, and Level (Continued) Pulse Level Accuracy (5 GHz, Pulse Width = 0.5 ms) Lower Limit Measured Value Record the displayed output level L1 (step 5.b) . . . . . . . . . . . . . . . . . . . . _______ dBm Record the displayed output level L1 (step 5.d) . . . . . . . . . . . . . . . . . . . . _______ dBm Calculate and record the pulse level error. . . . . . . . . . . . . . _______ dB Upper Limit Set F1 to 5.
TEST RECORD MODEL 68275B/68375B 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure (1 GHz) Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A 60 dB _______ dB N/A Set F1 to 1.10 GHz Measure and record the peak of the signal on the Spectrum Analyzer. (Measured signal must be >60 dB below top graticule to meet specification; this represents an On/Off Ratio of >80 dB.) . Test Procedure (5 GHz) Set F1 to 5.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer.
ANRITSU Model 68275B/68375B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68275B/68375B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68375B having Firware Version 1.00 and above) Procedure Step Step Completion 5. ALC Slope DAC adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 6. Store the DAC setting value(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68275B/68375B 4-13 FM Calibration (68275B/68375B with Firmware Version 1.00) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68275B/68375B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68277B/68377B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68277B/68377B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 1.000 000 000 _____________________ 26.000 000 000 _____________________ 2.000 000 000 _____________________ 27.000 000 000 _____________________ 3.000 000 000 _____________________ 28.000 000 000 _____________________ 4.000 000 000 _____________________ 29.000 000 000 _____________________ 5.
TEST RECORD MODEL 68277B/68377B 3-7 Frequency Synthesis Tests Fine Loop Test Procedure (Standard 68X77B) Test Frequency (in Ghz) Measured Value ** Fine Loop Test Procedure (68X77B with Option 11) Test Frequency (in Ghz) Measured Value *** 1.000 001 000 _____________________ 1.000 000 100 _____________________ 1.000 002 000 _____________________ 1.000 000 200 _____________________ 1.000 003 000 _____________________ 1.000 000 300 _____________________ 1.
TEST RECORD MODEL 68277B/68377B 3-8 Spurious Signals Test: RF Output Signals <2 GHz Test Procedure Measured Value Upper Limit Set F1 to 10 MHz Record the presence of the worst case harmonic . . . . . . . . . . _______________dBc –30 dBc Record the presence of the worst case non-harmonic . . . . . . . _______________dBc –40 dBc Set F1 to 20 MHz Record the presence of the worst case harmonic . . . . . . . . . . _______________dBc –30 dBc Record the presence of the worst case non-harmonic . . . .
TEST RECORD MODEL 68277B/68377B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz Test Procedure (2 to 10 GHz) Measure Value Upper Limit Set F1 to 2.1 GHz Record the level of all harmonics of the 2.1 GHz carrier: 4.2 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 6.3 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 8.4 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68277B/68377B 3-10 Single Sideband Phase Noise Test Test Procedure Measured Value Upper Limit Set F1 to 0.6 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –74 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –85 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –82 dBc 100 kHz . . . . . . . . . . . . . . .
TEST RECORD MODEL 68277B/68377B 3-10 Single Sideband Phase Noise Test (Continued) Test Procedure Measured Value Upper Limit Set F1 to 26.5 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –75 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –73 dBc 100 kHz . . . . . . . .
TEST RECORD MODEL 68277B/68377B 3-11 Power Level Accuracy and Flatness Tests (Model 68277B/68377B without Option 2C Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.0 GHz Set F1 to 45.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * +10 dBm _________dBm + 2.5 dBm _________dBm + 2.5 dBm _________dBm + 9 dBm _________dBm + 1.5 dBm _________dBm + 1.5 dBm _________dBm + 8 dBm _________dBm + 0.
TEST RECORD MODEL 68277B/68377B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68277B/68377B with Option 2C Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.0 GHz Set F1 to 45.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * + 8.5 dBm _________dBm + 0 dBm _________dBm – 1 dBm _________dBm + 7.5 dBm _________dBm – 1 dBm _________dBm – 2 dBm _________dBm + 6.
TEST RECORD MODEL 68277B/68377B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68277B/68377B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68277B/68377B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68277B/68377B 3-14 Pulse Modulation Tests: Rise Time, Fall Time, Overshoot, and Level (Continued) Pulse Level Accuracy (5 GHz, Pulse Width = 0.5 ms) Lower Limit Measured Value Record the displayed output level L1 (step 5.b) . . . . . . . . . . . . . . . . . . . . _______ dBm Record the displayed output level L1 (step 5.d) . . . . . . . . . . . . . . . . . . . . _______ dBm Calculate and record the pulse level error. . . . . . . . . . . . . . _______ dB Upper Limit Set F1 to 5.
TEST RECORD MODEL 68277B/68377B 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure (1 GHz) Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A 60 dB _______ dB N/A Set F1 to 1.10 GHz Measure and record the peak of the signal on the Spectrum Analyzer. (Measured signal must be >60 dB below top graticule to meet specification; this represents an On/Off Ratio of >80 dB.) . Test Procedure (5 GHz) Set F1 to 5.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer.
ANRITSU Model 68277B/68377B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68277B/68377B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68377B having Firmware Version 1.01 to 2.00) Procedure Step Step Completion 5. ALC Slope DAC adjustment for £2 GHz . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 9. ALC Slope DAC adjustment for >2 GHz . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 10.
TEST RECORD MODEL 68277B/68377B 4-13 FM Calibration (68277B/68377B with Firmware Version 1.01 to 2.10) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68277B/68377B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68285B/68385B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68285B/68385B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 1.000 000 000 _____________________ 26.000 000 000 _____________________ 2.000 000 000 _____________________ 27.000 000 000 _____________________ 3.000 000 000 _____________________ 28.000 000 000 _____________________ 4.000 000 000 _____________________ 29.000 000 000 _____________________ 5.
TEST RECORD MODEL 68285B/68385B 3-7 Frequency Synthesis Tests (Continued) Coarse Loop/YIG Loop Test Procedure (Continued) Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 51.000 000 000 _____________________ 56.000 000 000 _____________________ 52.000 000 000 _____________________ 57.000 000 000 _____________________ 53.000 000 000 _____________________ 58.000 000 000 _____________________ 54.000 000 000 _____________________ 59.
TEST RECORD MODEL 68285B/68385B 3-8 Spurious Signals Test: RF Output Signals £2.2 GHz Test Procedure Measured Value Upper Limit Set F1 to 500 MHz Record the level of all harmonics of the 500 MHz carrier 1.0 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 1.5 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 2.0 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 2.
TEST RECORD MODEL 68285B/68385B 3-9 Harmonic Test: RF Output Signals From 2.2 to 20 GHz Test Procedure (2.2 to 10 GHz) Measure Value Upper Limit Set F1 to 2.4 GHz Record the level of all harmonics of the 2.4 GHz carrier: 4.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 7.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 9.6 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68285B/68385B 3-10 Single Sideband Phase Noise Test Test Procedure Measured Value Upper Limit Set F1 to 0.6 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –84 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –97 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –95 dBc 100 kHz . . . . . . . . . . . . . . .
TEST RECORD MODEL 68285B/68385B 3-10 Single Sideband Phase Noise Test (Continued) Test Procedure Measured Value Upper Limit Set F1 to 26.5 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –75 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –73 dBc 100 kHz . . . . . . . .
TEST RECORD MODEL 68285B/68385B 3-11 Power Level Accuracy and Flatness Tests (Model 68285B/68385B without Option 2D Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.0 GHz Set F1 to 55.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * +10 dBm _________dBm + 2.5 dBm _________dBm + 2 dBm _________dBm + 9 dBm _________dBm + 1.5 dBm _________dBm + 1 dBm _________dBm + 8 dBm _________dBm + 0.
TEST RECORD MODEL 68285B/68385B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68285B/68385B with Option 2D Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.0 GHz Set F1 to 55.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * + 8.5 dBm _________dBm + 0 dBm _________dBm – 2 dBm _________dBm + 7.5 dBm _________dBm – 1 dBm _________dBm – 3 dBm _________dBm + 6.
TEST RECORD MODEL 68285B/68385B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68285B/68385B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68285B/68385B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68285B/68385B 3-14 Pulse Modulation Tests: Rise Time, Fall Time, Overshoot, and Level (Continued) Pulse Level Accuracy (5 GHz, Pulse Width = 0.5 ms) Lower Limit Measured Value Record the displayed output level L1 (step 5.b) . . . . . . . . . . . . . . . . . . . . _______ dBm Record the displayed output level L1 (step 5.d) . . . . . . . . . . . . . . . . . . . . _______ dBm Calculate and record the pulse level error. . . . . . . . . . . . . . _______ dB Upper Limit Set F1 to 5.
TEST RECORD MODEL 68285B/68385B 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure (1 GHz) Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A 60 dB _______ dB N/A Set F1 to 1.10 GHz Measure and record the peak of the signal on the Spectrum Analyzer. (Measured signal must be >60 dB below top graticule to meet specification; this represents an On/Off Ratio of >80 dB.) . Test Procedure (5 GHz) Set F1 to 5.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer.
ANRITSU Model 68285B/68385B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68285B/68385B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68385B having Firmware Version 1.00 and above) Procedure Step Step Completion 5. ALC Slope DAC adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 6. Store the DAC setting value(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68285B/68385B 4-13 FM Calibration (68285B/68385B with Firmware Version 1.00) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68285B/68385B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68287B/68387B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68287B/68387B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 1.000 000 000 _____________________ 26.000 000 000 _____________________ 2.000 000 000 _____________________ 27.000 000 000 _____________________ 3.000 000 000 _____________________ 28.000 000 000 _____________________ 4.000 000 000 _____________________ 29.000 000 000 _____________________ 5.
TEST RECORD MODEL 68287B/68387B 3-7 Frequency Synthesis Tests (Continued) Coarse Loop/YIG Loop Test Procedure (Continued) Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 51.000 000 000 _____________________ 56.000 000 000 _____________________ 52.000 000 000 _____________________ 57.000 000 000 _____________________ 53.000 000 000 _____________________ 58.000 000 000 _____________________ 54.000 000 000 _____________________ 59.
TEST RECORD MODEL 68287B/68387B 3-8 Spurious Signals Test: RF Output Signals <2 GHz Test Procedure Measured Value Upper Limit Set F1 to 10 MHz Record the presence of the worst case harmonic . . . . . . . . . . _______________dBc –30 dBc Record the presence of the worst case non-harmonic . . . . . . . _______________dBc –40 dBc Set F1 to 20 MHz Record the presence of the worst case harmonic . . . . . . . . . . _______________dBc –30 dBc Record the presence of the worst case non-harmonic . . . .
TEST RECORD MODEL 68287B/68387B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz Test Procedure (2 to 10 GHz) Measure Value Upper Limit Set F1 to 2.1 GHz Record the level of all harmonics of the 2.1 GHz carrier: 4.2 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 6.3 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 8.4 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68287B/68387B 3-10 Single Sideband Phase Noise Test Test Procedure Measured Value Upper Limit Set F1 to 0.6 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –74 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –85 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –82 dBc 100 kHz . . . . . . . . . . . . . . .
TEST RECORD MODEL 68287B/68387B 3-10 Single Sideband Phase Noise Test (Continued) Test Procedure Measured Value Upper Limit Set F1 to 26.5 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –75 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –73 dBc 100 kHz . . . . . . . .
TEST RECORD MODEL 68287B/68387B 3-11 Power Level Accuracy and Flatness Tests (Model 68287B/68387B without Option 2D Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.0 GHz Set F1 to 55.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * +10 dBm _________dBm + 2.5 dBm _________dBm + 2 dBm _________dBm + 9 dBm _________dBm + 1.5 dBm _________dBm + 1 dBm _________dBm + 8 dBm _________dBm + 0.
TEST RECORD MODEL 68287B/68387B 3-11 Power Level Accuracy and Flatness Tests (Continued) (Model 68287B/68387B with Option 2D Step Attenuator) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.0 GHz Set F1 to 55.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * + 8.5 dBm _________dBm + 0 dBm _________dBm – 2 dBm _________dBm + 7.5 dBm _________dBm – 1 dBm _________dBm – 3 dBm _________dBm + 6.
TEST RECORD MODEL 68287B/68387B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68287B/68387B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68287B/68387B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68287B/68387B 3-14 Pulse Modulation Tests: Rise Time, Fall Time, Overshoot, and Level (Continued) Pulse Level Accuracy (5 GHz, Pulse Width = 0.5 ms) Lower Limit Measured Value Record the displayed output level L1 (step 5.b) . . . . . . . . . . . . . . . . . . . . _______ dBm Record the displayed output level L1 (step 5.d) . . . . . . . . . . . . . . . . . . . . _______ dBm Calculate and record the pulse level error. . . . . . . . . . . . . . _______ dB Upper Limit Set F1 to 5.
TEST RECORD MODEL 68287B/68387B 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure (1 GHz) Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A 60 dB _______ dB N/A Set F1 to 1.10 GHz Measure and record the peak of the signal on the Spectrum Analyzer. (Measured signal must be >60 dB below top graticule to meet specification; this represents an On/Off Ratio of >80 dB.) . Test Procedure (5 GHz) Set F1 to 5.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer.
ANRITSU Model 68287B/68387B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68287B/68387B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68387B having Firmware Version 2.00 and above) Procedure Step Step Completion 5. ALC Slope DAC adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 6. Store the DAC setting value(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68287B/68387B 4-13 FM Calibration (68287B/68387B with Firmware Version 1.01 to 2.10) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68287B/68387B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68295B/68395B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68295B/68395B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 1.000 000 000 _____________________ 26.000 000 000 _____________________ 2.000 000 000 _____________________ 27.000 000 000 _____________________ 3.000 000 000 _____________________ 28.000 000 000 _____________________ 4.000 000 000 _____________________ 29.000 000 000 _____________________ 5.
TEST RECORD MODEL 68295B/68395B 3-7 Frequency Synthesis Tests (Continued) Coarse Loop/YIG Loop Test Procedure (Continued) Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 51.000 000 000 _____________________ 59.000 000 000 _____________________ 52.000 000 000 _____________________ 60.000 000 000 _____________________ 53.000 000 000 _____________________ 61.000 000 000 _____________________ 54.000 000 000 _____________________ 62.
TEST RECORD MODEL 68295B/68395B 3-8 Spurious Signals Test: RF Output Signals 2.2 GHz Test Procedure Measured Value Upper Limit Set F1 to 500 MHz Record the level of all harmonics of the 500 MHz carrier 1.0 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 1.5 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 2.0 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 2.
TEST RECORD MODEL 68295B/68395B 3-9 Harmonic Test: RF Output Signals From 2.2 to 20 GHz Test Procedure (2.2 to 10 GHz) Measure Value Upper Limit Set F1 to 2.4 GHz Record the level of all harmonics of the 2.4 GHz carrier: 4.8 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 7.2 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 9.6 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68295B/68395B 3-10 Single Sideband Phase Noise Test Test Procedure Measured Value Upper Limit Set F1 to 0.6 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –84 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –97 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –95 dBc 100 kHz . . . . . . . . . . . . . . .
TEST RECORD MODEL 68295B/68395B 3-10 Single Sideband Phase Noise Test (Continued) Test Procedure Measured Value Upper Limit Set F1 to 26.5 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –75 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –73 dBc 100 kHz . . . . . . . .
TEST RECORD MODEL 68295B/68395B 3-11 Power Level Accuracy and Flatness Tests (Model 68295B/68395B) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.0 GHz Set F1 to 60.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * +10 dBm _________dBm + 2.5 dBm _________dBm – 2 dBm _________dBm + 9 dBm _________dBm + 1.5 dBm _________dBm – 3 dBm _________dBm + 8 dBm _________dBm + 0.
TEST RECORD MODEL 68295B/68395B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68295B/68395B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68295B/68395B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68295B/68395B 3-14 Pulse Modulation Tests: Rise Time, Fall Time, Overshoot, and Level (Continued) Pulse Level Accuracy (5 GHz, Pulse Width = 0.5 ms) Lower Limit Measured Value Record the displayed output level L1 (step 5.b) . . . . . . . . . . . . . . . . . . . . _______ dBm Record the displayed output level L1 (step 5.d) . . . . . . . . . . . . . . . . . . . . _______ dBm Calculate and record the pulse level error. . . . . . . . . . . . . . _______ dB Upper Limit Set F1 to 5.
TEST RECORD MODEL 68295B/68395B 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure (1 GHz) Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A 60 dB _______ dB N/A Set F1 to 1.10 GHz Measure and record the peak of the signal on the Spectrum Analyzer. (Measured signal must be >60 dB below top graticule to meet specification; this represents an On/Off Ratio of >80 dB.) . Test Procedure (5 GHz) Set F1 to 5.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer.
ANRITSU Model 68295B/68395B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68295B/68395B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68395B having Firmware Version 1.00 or above) Procedure Step Step Completion 5. ALC Slope DAC adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 6. Store the DAC setting value(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68295B/68395B 4-13 FM Calibration (68295B/68395B with Firmware Version 1.00) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68295B/68395B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
ANRITSU Model 68297B/68397B Serial Number __________________ Date: __________________________ Tested By: __________________________ 3-6 Internal Time Base Aging Rate Test Test Procedure Measured Value Record frequency error value . . . . . . . . . . . . . . . . . . . . _______________ Record frequency error value (after 24 hours) . . . . . . . . . . . _______________ Record the computed aging rate . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68297B/68397B 3-7 Frequency Synthesis Tests Coarse Loop/YIG Loop Test Procedure Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 1.000 000 000 _____________________ 26.000 000 000 _____________________ 2.000 000 000 _____________________ 27.000 000 000 _____________________ 3.000 000 000 _____________________ 28.000 000 000 _____________________ 4.000 000 000 _____________________ 29.000 000 000 _____________________ 5.
TEST RECORD MODEL 68297B/68397B 3-7 Frequency Synthesis Tests (Continued) Coarse Loop/YIG Loop Test Procedure (Continued) Test Frequency (in GHz) Measured Value * Test Frequency (in GHz) Measured Value * 51.000 000 000 _____________________ 59.000 000 000 _____________________ 52.000 000 000 _____________________ 60.000 000 000 _____________________ 53.000 000 000 _____________________ 61.000 000 000 _____________________ 54.000 000 000 _____________________ 62.
TEST RECORD MODEL 68297B/68397B 3-8 Spurious Signals Test: RF Output Signals <2 GHz Test Procedure Measured Value Upper Limit Set F1 to 10 MHz Record the presence of the worst case harmonic . . . . . . . . . . _______________dBc –30 dBc Record the presence of the worst case non-harmonic . . . . . . . _______________dBc –40 dBc Set F1 to 20 MHz Record the presence of the worst case harmonic . . . . . . . . . . _______________dBc –30 dBc Record the presence of the worst case non-harmonic . . . .
TEST RECORD MODEL 68297B/68397B 3-9 Harmonic Test: RF Output Signals From 2 to 20 GHz Test Procedure (2 to 10 GHz) Measure Value Upper Limit Set F1 to 2.1 GHz Record the level of all harmonics of the 2.1 GHz carrier: 4.2 GHz (2nd harmonic) . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 6.3 GHz (3rd harmonic) . . . . . . . . . . . . . . . . . . . . . . _______________dBc –50 dBc 8.4 GHz (4th harmonic) . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68297B/68397B 3-10 Single Sideband Phase Noise Test Test Procedure Measured Value Upper Limit Set F1 to 0.6 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –74 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –85 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –82 dBc 100 kHz . . . . . . . . . . . . . . .
TEST RECORD MODEL 68297B/68397B 3-10 Single Sideband Phase Noise Test (Continued) Test Procedure Measured Value Upper Limit Set F1 to 26.5 GHz Record the phase noise levels at these offsets: 100 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –60 dBc 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –75 dBc 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _______________dBc –73 dBc 100 kHz . . . . . . . .
TEST RECORD MODEL 68297B/68397B 3-11 Power Level Accuracy and Flatness Tests (Model 68297B/68397B) Power Level Accuracy Test Procedure Set F1 to 5.0 GHz Set F1 to 25.0 GHz Set F1 to 60.0 GHz Set L1 to: Measured Power * Set L1 to: Measured Power * Set L1 to: Measured Power * +10 dBm _________dBm + 2.5 dBm _________dBm – 2 dBm _________dBm + 9 dBm _________dBm + 1.5 dBm _________dBm – 3 dBm _________dBm + 8 dBm _________dBm + 0.
TEST RECORD MODEL 68297B/68397B 3-12 Amplitude Modulation Test AM Imput Sensitivity Procedure Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Measure and record the Modulation Analyzer AM PK(+) reading . . . . . . . . . . . __________ Measure and record the Modulation Analyzer AM PK(–) reading . . . . . . . . . . . __________ Calculate and record the actual AM input sensitivity . . . . . . . .
TEST RECORD MODEL 68297B/68397B 3-13 Frequency Modulation Tests (Continued) FM Imput Sensitivity Procedure (Locked Low-Noise FM Mode) Lower Limit Measured Value Record the FM deviation frequency displayed on the 68297B/68397B . . . . . . . . _______ MHz Calculate and record the FM accuracy . . . . . . . . . . . . . . . _________ % Upper Limit Set F1 to 5.0 GHz 93.7% 106.
TEST RECORD MODEL 68297B/68397B 3-14 Pulse Modulation Tests: Rise Time, Fall Time, Overshoot, and Level (Continued) Pulse Level Accuracy (5 GHz, Pulse Width = 0.5 ms) Lower Limit Measured Value Upper Limit Set F1 to 5.0 GHz Set pulse width W1 to 5.0 ms Record the displayed output level L1 (step 5.b) . . . . . . . . . . . . . . . . . . . . _______ dBm Record the displayed output level L1 (step 5.d) . . . . . . . . . . . . . . . . . . . . _______ dBm Calculate and record the pulse level error. . . .
TEST RECORD MODEL 68297B/68397B 3-16 Pulse Modulation Test: RF On/Off Ratio Test Procedure (1 GHz) Lower Limit Measured Value Upper Limit 60 dB _______ dB N/A 60 dB _______ dB N/A Set F1 to 1.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer. (Measured signal must be >60 dB below top graticule to meet specification; this represents an On/Off Ratio of >80 dB.) . Test Procedure (5 GHz) Set F1 to 5.0 GHz Measure and record the peak of the signal on the Spectrum Analyzer.
ANRITSU Model 68297B/68397B Serial Number __________________ Date: __________________________ Calibrated By: __________________________ 4-7 Preliminary Calibration Procedure Step Step Completion 1. Internal DVM Calibration (calterm119) . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. Coarse Loop Pretune DAC Calibration (calterm 137) . . . . . . . . . . . . . . . . . . . ______________ 3. Fine Loop Pretune DAC Calibration (calterm 136). . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68297B/68397B 4-9 RF Level Calibration This calibration is performed using an automatic test system. Contact ANRITSU Customer Service for further information. 4-10 ALC Slope Calibration (68397B having Firmware Version 2.00 or above) Procedure Step Step Completion 5. ALC Slope DAC adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 6. Store the DAC setting value(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST RECORD MODEL 68297B/68397B 4-13 FM Calibration (68297B/68397B with Firmware Version 1.01 to 2.10) Procedure Step Step Completion 1. FM Meter Calibration (calterm 123) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ______________ 2. FM Offset Balance Calibration (calterm 126) . . . . . . . . . . . . . . . . . . . . . . . ______________ 3. External FM Wide Sensitivity Calibration (calterm 124) . . . . . . . . . . . . . . . . . . ______________ 4.
TEST RECORD MODEL 68297B/68397B 4-14 Phase Modulation (FM) Calibration (Option 6) Procedure Step Step Completion 1. External Wide FM Mode Sensitivity Calibration (calterm 149) . . . . . . . . . . . . . . ______________ 2. Internal Wide FM Mode Sensitivity Calibration (calterm 151) . . . . . . . . . . . . . . . ______________ 3. Wide FM Mode Flatness Calibration (calterm 155) . . . . . . . . . . . . . . . . . . . . ______________ 4. External Narrow FM Mode Sensitivity Calibration (calterm 150) . .
Subject Index 0-9 682XXB/683XXB Assembly and Component Locator Diagram, 6-9 General Description, 1-3 Major Subsystems Functional Description, 2-3 Manuals, Related, 1-6 Models, List of, 1-4 - 1-5 Options, List of, 1-7 Startup Configurations, 1-11 System Block Diagram, 2-6 - 2-7 A ALC/AM/Pulse Modulation Subsystem Block Diagram, 2-17 Functional Description, 2-15 ANRITSU Service Centers, 1-18 C Calibration ALC Bandwidth Calibration, 4-31 ALC Slope Calibration, 4-23 AM Calibration, 4-33 FM Calibration, 4-37 F
SUBJECT INDEX N-T N Normal Operation Error/Warning Messages, 5-7 O Options, List of, 1-7 P Parts and Subassemblies, Replaceable, 1-14 Parts Ordering Information, 1-14 ANRITSU Service Centers, 1-14 Performance Verification Tests, 3-3 Preventive Maintenance Fan Filter Cleaning, 1-9 R Rear Panel Assembly Remove/Replace Procedures, 6-13 Recommended Test Equipment, 1-12 Removal and Replacement Procedures A13, A14, or A15 PCB, 6-11 A16 or A17 PCB, 6-11 A18 or A19 PCB, 6-12 A21 Line Filter/Rectifier PCB, 6-16
