Troubleshooting and Repair Manual Volume 1 HP 85660B Spectrum Analyzer RF Section ri!ia HEWLETT PACKARD HP Part No. 85660-90210 Microfiche Part No.
@Copyright Hewlett-Packard Company 1990 All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.
Certification Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-Packard further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute’s calibration facility, and to the calibration facilities of other International Standards Organization members.
Safety Symbols The following safety symbols are used throughout this manual. Familiarize yourself with each of the symbols and its meaning before operating this instrument. Caution u Warning Q The caution sign denotes a hazard. It calls attention to a procedure which, if not correctly performed or adhered to, could result in damage to or destruction of the instrument. Do not proceed beyond a caution sign until the indicated conditions are fully understood and met. The warning sign denotes a hazard.
Contents Volume 1 General Information General information on the contents of the manual, including storage, shipment, and packaging. Overall Troubleshooting Troubleshooting index, special messages, diagnostic functions, error correction routine, sweep system block diagram and troubleshooting, mnemonics listing, and spectrum analyzer overall block diagram. Analog Troubleshooting Phase lock loop operation, start frequency tuning equations, and phase lock troubleshooting.
General Information Introduction This volume of the Troubleshooting and Repair Manual contains information for the troubleshooting and repair of the RF Section of the instrument. This information is combined in service sheets and indexed with tabs for quick reference.
n Schematic Diagram Replacement Procedures Replacement procedures are included for use in removing and replacing assemblies for repair. They are located in the following sections: w A5 Front Panel Front Panel Removal and Repair w A6 RF Module A6 RF Module Replacement A6Al Coaxial Switch and A6A17 300 MHz BPF Replacement A6A2 RF Attenuator Replacement A6A4 Second Converter Replacement A6A6 First Converter Replacement A6A15 3.6 GHz BPF, A6A16 1.
Major Assembly and Component Locations Major assembly and component location illustrations for the RF Section are located at the rear of this manual.
2. Using a clean cloth, dry the contacts by wiping from their inside to outside edge. This prevents particles from building up on the contact edges. Caution 9 Do not use erasers to clean the edge connectors. They cause microscopic damage to the contact surface, removing the thin gold plating and exposing the nickel underplating, which eventually corrodes. Erasers also leave a film on the contact and generate static electricity. Do not use paper of any kind to clean the edge connector contacts.
Table 2. Cross-Reference Between ASCII, Decimal, and Binary Address Codes ASCII Character Decimal Value 5-Bit Binary Equivalent @ SP 00 00000 A ! 01 00001 B ” 02 00010 C # 03 00011 D $ 04 00100 E % 05 00101 F & 06 00110 G ’ 07 00111 H ( 08 01000 I > 09 01001 J * 10 01010 K + 11 01011 L ’ 12 01100 M - 13 01101 N .
A6 A5 A4 A3 A2 Al I Switch in Down Position = Logic 1 Indicates Switch in Down Position Figure 1. HP-IB Address Switch (Shown in Factory Preset Position) The HP-IB address may also be changed from the front panel or programmed via a controller using a special shift key function (KSP). This address remains in effect as long as the instrument memory has power from either the ac line or the internal battery.
Other Packaging If it is necessary to use packaging materials other than the type used in original factory packaging, the following general instructions should be followed. 1. Separate the two instrument sections and wrap each in heavy paper or plastic. 2. Place the instrument sections in separate containers with 8 to 10 cm (3 to 4 inches) of shock-absorbing material around all sides to provide firm cushioning and prevent movement inside the container. Protect front panels with cardboard.
NOTE Front handles must be mounted for shipment. Figure 2. Packaging for Shipment Using Factory Packaging Materials Recommended Test Equipment A list of recommended test equipment is contained in the HP 8566B Performance Tests and Adjustments Manual (HP Part Number 08566-90148). This list includes all of the equipment that is necessary to perform the adjustments and tests of the HP 8566B.
I 0 0 300000000000000000 18 X 2 lj 25 X 2 Item HP Part Number CD Qty 2 8 ~000000000000000~ 15 x 2 Description - 1 85660-60114 5 1 EXTENDER BOARD: Al2 RF SECTION INTERFACE 2 85662-60088 4 1 PC BOARD: DISPLAY ADJUSTMENT TEST 3 08505-60042 8 2 EXTENDER BOARD: 36 CONTACTS; 2 ROWS OF 18 4 85680-60034 2 2 EXTENDER BOARD: 50 CONTACTS; 2 ROWS OF 25 5 08565-60107 8 2 EXTENDER BOARD: 44 CONTACTS; 2 ROWS OF 22 6 08505-60041 7 1 EXTENDER BOARD: 30 CONTACTS; 2 ROWS OF 15 7 8568
This page intentionally left blank.
GRAPHIC SYMBOLS USED ON SCHEMATIC AND BLOCK DIAGRAMS BASIC COMPONENT SYMBOLS CIRCUIT ASSEMBLY BORDERLINE VARIABLE RESISTOR (WIPER Moves TOWARD cw WHEN SHAFT IS ROTATED IN A CLOCKWISE DIRECTION) ‘=‘-b= FUSE INDICATES A MECHANICAL CONNECTION HEAVY LINE WITH ARROWS INDICATES PATH AND DIRECTION OF MAIN SIGNAL THERMISTOR it -11 2 I_ I- + ELECTROLYTIC CAPACITOR 3 CAPACITOR VARIABLE fr -o-63 CAPACITOR FEEDTHROUGH CAPACITOR FERROUS-CORE SLUG-TUNED RELAY(BOX INDUCTOR DIGITAL SURFACE ACOUSTI
GRAPHIC SYMBOLS USED ON SCHEMATIC AND BLOCK DIAGRAMS BASIC -c-c-- F--T L--J TPl TEST POINT (TERMINAL PROVIDED FOR TEST PROBE CONNECTION) 48 CONNECTION SYMBOL PLUG (MOVABLE) INDICATING CONNECTION SYMBOL JACK (STATIONARY) INDICATING MEASUREMENT POINT (USED TO INDICATE A CONVENIENT POINT FOR MEASUREMENT. NO TERMINAL PROVIDED FOR TEST PROBE) A B CABLE INDICATES WIRE OR CABLE COLOR CODE (COLOR SAME AS RESISTOR COLOR CODE.
Schematic Symbols for Digital Integrated Circuits The following is a guide to the symbols used for digital or logic ICs in this manual. The symbology is based upon American National Standard ANSI Y32.14, Graphic Symbols for Logic Diagrams (Two-State Devices), but does not strictly follow the standard. Figure 6 should be consulted for the explanation of digital IC symbols used in Sections VIII and IX. Definitions Logic Element.
INDICATOR SYMBOLS (positive logic assumed) ACTIVE-HIGH inputs and outputs are indicated by the absence of the ACTIVE-LOW d zl inputs and outputs ore EDGE-SENSTIVE (Dynamic) inputs are indicated by the presence of the dynamic input symbol, D. - A C T I V E P E R I O D :k A C T I V E PERIOD ;;- TRAILING-EDGE ACTIVATED outputs are indicated by the output delay symbol, 1.
Note: The logic negation symbol (0) a1 one gives no information about the actual voltage levels used in a digital cirucit. For this reason the type of logic system (positive or negative) must be specified. In this manual, unless otherwise noted on the schematic, the logic system is positive; that is, the more positive voltage level is the HIGH or l-state and the less positive level is the LOW or O-state.
Line Labels + Shift Left (or up) + Shift Right (or down) +1 Count Up - 1 Count Down =0,-l Borrow Output =9,+1 Carry Output (Decimal Counter) =15,+1 Carry Output (Binary Counter) An nth Address Bit (ROM, RAM) c Clock Input D Data or Delay Input (Flip-Flop) Dn nth Data Bit Input EN Enable F 3-State Enable Input (See “Dependency”) G Gating Input (See “Dependency”) J J-K Flip-Flop J Input K J-K Flip-Flop K Input LD Load Enable Input (Synchronous) PS Preset Input (Asynchronous)
Notes 1. The suffix or subscript 0 denotes the least significant bit (LSB) of a data or address word. 2. Letters may be used to identify a line or logic element without indicating a specific logic function. For example: Triple - - - A - - - B C MUX O7--l A Ol+--l B 0 l--l Z-Channel Multiplexer Letters are used to relate control inputs to logic elements.
When the G label is used, the gating input is labelled with a G followed by a numeral or letter. The line labels of the gated inputs or outputs are prefixed with the same numeral or letter. Two examples are: 2-Bit Register IC S y m b o l a Equivalent Gl REG d b 1s C IS i e 2-to-4 Line Decoder - 1 2 a - G J X-Y Jl + J2 h J3 w & & & E kmI I I - Figure 6.
The F line label is used to indicate S-state logic. The S-state enable i: nput is labelled with an F and numerals or letters are used as with the G label: Counter with 3-State O u t p u t s I--i’- - > c F 4 Fl R XT CTR (1) 3-Stat e Buffers U6A l- (2) ’ (4) ’ - (8) ’ - Figure 6. Schematic Symbols for Digital Integrated Circuits (7 of 7) Weighting of Input and Output Lines The coding of multiplexers, demultiplexers, encoders, and decoders is shown by decimal weighting.
Overall Troubleshooting This chapter contains information that will help to identify the system of the spectrum analyzer that is not operating correctly. Table 1, “Troubleshooting Index,” may be used to locate troubleshooting information in the RF and IF Display Troubleshooting and Repair Manuals. This chapter also describes the Special Messages that may be displayed on the CRT and the Diagnostic Functions that are accessible from the front panel.
Table 1.
Table 1.
Special Messages As a convenience to the operator and as an aid in servicing, eleven messages can appear in the upper right corner of the CRT display. (Ten of these messages are shown in Figure 1.) Five of the messages inform the operator of possible erroneous data from improper instrument operation. The other six provide warnings of instrument malfunctions that must be repaired for proper instrument operation. A brief description of each message follows.
PLl The PLLl Phase Lock Loop is unlocked. Items to check are: n AlOAl - Check signal out at AlOAlJ3. n AlOA2 - Check signal in at AlOA2J2. n A10A3 - Check signal out at AlOA3J3. n AlOA4 - Check signal out at AlOA4J2 and in at AlOA4J4. PLL2 The PLL2 Phase Lock Loop is unlocked. Items to check are: n AlOA5 - Check signal out at AlOA5J3. n AlOA6 - Check 4 Det Out voltage at AlOA6TP7. n AlOA7 - Check 500 kHz Reference at AlOA7TP5 and divided output at AlOA7TPl.
HET UNLOCK The RF Module Phase Lock Loop is unlocked. Items to check are: n CAL OUTPUT n A6A9 - Check voltage at A6A9J4. n A6A4 - Check 3.3 GHz output of A6A4. FREQUENCY DIAGNOSTICS BLOCK TRACE DETECT I ON INDICATION SPECIAL MESSAGES BLOCK i/ ACTIVE FUNCTION BLOCK II S T A R T 2 . 0 GHz R E S BW 3 0 kHz VBW 1 0 0 kHz S T O P 2 2 . 0 GHz SWP 5 0 0 m s e c Figure 1.
Frequency Diagnostics [SHIFT) R1,~~b REF LVL) (KM) This function displays many of the internal frequency control parameters in the upper left corner of the CRT display. (See Figure 1.) These parameters are the programmed values determined by the Al5 Controller. For example, following an C2-221, a @ZiJ R MKR~REF LVL) (KSR) might display the following values: 1. 2.321 400000 2. 30.000 000 3. 1 17 11 4. 184.545 455 5. 150.000 000 6. 160.
@iZY) Trace A dIVIEW) (KSd) displays negative peaks. (SHIFT) Trace A ‘[B) (KSe) displays sampled data. Trace A(ksa)returns to the normal automatic detection modes and removes the CRT indication. Error Correction Routine The internal Error Correction Routine available by pressing @iFi) w[~~~~~~~~~ SPAN] (KSW) is also useful as a diagnostic aid. If a malfunction causes the routine to stop, restart it and note the control settings (RES BW, ATTEN, REF LEVEL, LOG/LIN, etc.) when the failure occurred.
Table 2. Error Correction Routine Parameters Liue Parameter 1 Specification Troubleshooting Information LOG and LIN scale, BW
Sweep System Block Diagram Description The HP 8566B Spectrum Analyzer sweep system consists of the following modes: Continuous Sweep; Free Run Trigger Several different assemblies are involved in the HP 8566B sweep system. The Al6 Scan Generator generates the 0 to 10 V sweep ramp. The ramp converter on the A3A8 Analog-Digital Converter and the Digital Storage Processor Section digitize this ramp into a 10-bit sweep address.
Triggered Sweep The triggered sweep modes are very similar to free run operation except that instead of the Al5 Controller outputting a set HSWP command to the A3Al Trigger assembly, it outputs a trigger enable command. The output of the trigger select circuit (line, external, or video) then clocks the HSWP line high. Single Sweep The single sweep mode is useful in troubleshooting the sweep system because it does not rely on feedback from Digital Storage before resetting the sweep generator.
up to greater than 10 V. If the ramp waveform is correct, check the A3A8 ramp converter. Otherwise check the ramp generator on A16. Isolate Digital Storage Processor Section If HSWP Stays High (SWEEP LED ON) With the sweep ramp disconnected from A3A8Jl and A3A8TPl jumpered to A3A8TP2, check RSHS output for the presence of 60 ns low pulses. (The logic probe of the HP 5005A Signature Analyzer can be used to detect them.) If present, check A3Al Trigger. If not, check the Digital Storage Processor Section.
Table 3.
Table 3.
Al6 SCAN GENERATOR ASA RAMP CONVERTE DIGITAL STORAGE PROCESSOR AJA4 MEMORY A3A5 DATA MANIPULATOR A3A6 MAIN CONTROL A3A7 INTERFACE HSWP J4 > 415 :ONTROLLER 8 f ST-5 I J1 . //o-1ov RAMP DAC c rYHEN THE OUTPUT OF THE COMPARATOR GOES HIGH. THE RAMP OAC REGISTER AND THE SWEEP ADDRESS ARE INCREMENTED AN0 THE DISPLAY DATA FOR THAT MEMORY LOCATION IS “P-DATED. IF THE SWEEP ADDRESS EQUALS THE MARKER VALUE (USUALLY SET TO THE END OF SWEEP POSITION). 4 RESET HIGH SWEEP OUTPUT. RSHS. IS GENERATED.
Analog Troubleshooting Phase Lock Loops Principles of Operation General Description The fundamental RF signal input to the A6 RF Module (2 to 6.2 GHz) is generated by the AllA YTO (YIG-Tuned Oscillator). This signal is phase-locked, through other phase-lock loops, to the A22 10 MHz Standard (internal crystal oscillator). The YTO Loop pretunes and locks the YTO signal to the output of the M/N Loop (part of A7) and the A10 20/30 Loop. The M/N and 20/30 Loops serve two basic functions.
Reference Loop (Part of A7) The Reference Loop is phase-locked to the A22 10 MHz Standard and its phase-locked outputs (10, 20, 100, and 400 MHz) are used as references for the 20/30 Loop, the M/N Loop, and the Heterodyne Loop (part of A6). The 10 MHz signal is also used as an auxiliary rear-panel output. The A7A2 100 MHz VCXO (Voltage-Controlled Crystal Oscillator) is the heart of this loop.
reference (fzoise) from PLL2 in the 20/30 Loop which is either applied directly to the YTO or divided down and summed into PLL2 and PLLl and then applied to the YTO. When the frequency span is less than 25 kHz, the loop gain of the YTO Loop is increased by approximately 10 dB to provide better performance. This is performed by control signal HYGH (High = YTO Loop G ain High) being placed in a High state.
Troubleshooting Information Troubleshooting Table Table 1 correlates CRT phase-lock error messages with the probable faulty phase-lock loop and associated assemblies. This is especially helpful in determining the faulty loop when more than one phase-lock error message is displayed. Table 1.
The equation for start frequency is: fSF (B W X fM/N - fm/m)) + fIF Where: fsF = Start Frequency B = band number. KSR displays the value of B which varies from 0 to 4. When the displayed value is 0 (low band), use 1 as a multiplier. N = N number for M/N Loop. KSR displays the value of N which varies from 11 to 32. fM,N = M/N loop frequency in MHz. KSR displays the value which ranges from 177 to 197 MHz. f20/30 = Synthesizer frequency in MHz. KSR displays the value which ranges from 20 to 30 MHz.
(fM/N), and the YTO frequencies, refer to Table 2, M and N Numbers and Resulting Frequencies. 20/30 Synthesizer Tuning When a start frequency change occurs, the YTO is pretuned near the new desired frequency by the A19 Digital-Analog Converter and A20 Main Coil Driver. This places the YTO frequency 20 to 30 MHz below the Nth harmonic of the M/N Loop output. (The Nth harmonic is the same as the M/N Loop’s N number.) The YTO frequency and the M/N Loop harmonic are mixed in the AllA Sampler.
Phase Lock Loop Troubleshooting If one of the phase-lock error messages appears, a loop has failed. Start the troubleshooting procedure by determining if the malfunction is dependent on Center Frequency, Frequency Span, etc. Next, break the suspected loop and measure the power levels as indicated on the RF Section Analog Block Diagram. Even with the oscillators at the extremes of their ranges, the power levels must be within the limits indicated.
Gu!~ooqsalqnoJ~ SapuanbaJj Bugnsa+j pue SJaqWlN N pue LN ‘Z alqel f3oleuv 8
Table 2. M and N Numbers and Resulting Frequencies (continued) 2860 11 15 192.666667 3160 21 17 187.647059 2870 10 15 193.333333 3170 20 17 188.235294 2880 9 15 194.000000 3180 19 17 188.823529 2890 8 15 194.666667 3190 18 17 189.
BugooqsalqnoJl (panuguo3) sa!manbaJj Guglnsati pue SJXjUIllN N pue w ‘I alqel Boleuv 01
Table 2.
Table 2. M and N Numbers and Resulting Frequencies (continued) 4660 11 24 195.416667 4960 21 26 191.923077 4670 10 24 195.833333 4970 20 26 192.307692 4680 9 24 196.250000 4980 19 26 192.692308 4690 8 24 196.666667 4990 18 26 193.
Table 2. M and N Numbers and Resulting Frequencies (continued) 5260 11 27 195.925926 5560 21 29 192.758621 5270 10 27 196.296296 5570 20 29 193.103448 5280 9 27 196.666667 5580 19 29 193.448276 5290 8 27 197.037037 5590 18 29 193.
Table 2.
-----------P--P-r 1I CONYERTER FIRI ST CONVERTER I I I I ILAST CONVERTER I A6 RF MODULE I I SECONO L_, r GHZ 300MHZ ‘FEE Ef?i? I r-4- __----m---w--- 1 A7 M/N REFERNCE I 400 MHZ I I I 5.1.4MHZ.
Digital Troubleshooting Preliminary Checks Instrument Preset Check The two red INSTR CHECK LEDs light whenever the instrument is turned on or when @Z-Z@ is pushed. The main processor then performs a check of itself, a checksum verification of all ROMs on the Al5 Controller, a partial check of the Instrument Bus (50-wire bus), and a read-write check of the RAMS and A3A4 Memory in the IF-Display Section. If all the checks pass, both INSTR CHECK LEDs turn off.
“LONG POP” Instrument Preset Check This check is very similar to the normal Instrument Preset Check: an additional processor check is performed, all of the RAM locations in Digital Storage (A3A4 Memory) are checked, and the RAM memory on the Al5 Controller is verified. Since these more extensive checks require altering information that has been stored in RAM, LONG POP requires an internal jumper on the Al5 Controller. To perform a LONG POP: n Set the LINE switch to STANDBY.
A5 A5 Front Panel, Circuit Description The A5 Front Panel comprises the A5Al Keyboard, A5A2 Rotary Pulse Generator (RPG), Instrument Check indicator LEDs, LINE power switch, STANDBY power indicator LED, and CAL OUTPUT connector and cable. The RF INPUT, 1ST LO OUTPUT, and 321.4 MHz IF INPUT and IF OUTPUT connectors are physically part of the A6 RF Module and are described in detail in that section.
A5A2 Rotary Pulse Generator @J A5A2 Rotary Pulse Generator (RPG) is operated by turning the front-panel DATA knob in either direction. The rate and direction of knob rotation are encoded in the number and relative phase of output pulses on the RPGl and RPG2 lines. These two signals are decoded on the Al2 Front Panel Interface, enabling the Al5 Controller to gradually change appropriate instrument settings. LINE Power Switch @ When the LINE switch is in STANDBY, the LSBY (Low=STANDBY) line is grounded.
(2 PLACES) b 5 VIEW A VIEW 6 VIEW C VIEW D Figure 1.
LED LEAD IDENTIFICATION ..,I-:;;:; STANDBY INSTR CHECK I *g;;; 1 ~iz::~ INSTR CHECK II Figure 2. LED Removal and Repair 11. To replace signal input LEDs, switches, or keys, proceed as follows. a. Loosen set screw in DATA control knob (RPG) @@ using a number 4 allen wrench (HP part number 8710-0857) and remove knob. Refer to Figure 3. b. Remove nut from DATA control using a 7/16 inch wrench. c. Remove 14 screws @@ and lift printed circuit board away from front panel. Refer to Figure 3. d.
14. Secure IF Display Section to RF Section, replace bottom cover, and reconnect ac line cords. Figure 3.
HP Part Number 85660-60232 A5 Front-Panel HP Part Number C II A5 85660-60232 8 1 FRONT PANEL ASSEMBLY (SERIAL PREFIXES: 2410~-2511~) (NOT AVAILABLE FOR FIELD REPLACEMENT) 28480 85660-60232 A5Al A5A2 35660-60210 5060-0329 2 9 1 1 28480 28480 85660-60210 5060-0329 A5A2 3960-0684 2 1 28480 0960-0684 A5A2DSl A5DSl 2140-0016 1990-0487 a 7 1 1 KEYBOARD ASSEMBLY ROTARY PULSE GENERATOR (SERIAL PREFIXES: 2410~-2430~) ROTARY PULSE GENERATOR (SERIAL PREFIXES: 2449A AND ABOVE) LAMP, RPG (SERIA
HP Part Number 85660-60258 A5 Front Panel HP Part Number C c A5 85660-60258 I 1 FRONT PANEL ASSEMBLY (SERIAL PREFIX: 2516A)(NOT AVAILABLE FOR FIELD REPLACEMENT) 28480 85660-60258 A5Al A5A2 ASOSl A5DS2 A5DS3 85660-60210 0960-0684 1990-0487 1990-0486 1990-0486 ; i ; t t 1 1 1 1 1 KEYBOARD ASSEMBLY ROTARY PULSE GENERATOR LED-LAMP LUM-INT=2MCD LED-LAMP LUM-INT=2MCD LED-LAMP LUM-INT=2MCD 28480 28480 28480 28480 28480 85660-60210 QEDS-8831 HLMP-1401 HLMP-1301 HLMP-1301 A5MPl A5MP2 ASMP3 A5MP4 A5
HP Part Number 85660-60210 A5Al Keyboard Reference Designatior HP Part Number Mfr Code Description A5Al 85660-60210 A5AlCl A5AlC2 A5AlDSl A5AlDS2 A5AlDS3 0160-2055 0160-4832 1990-0487 1990-0487 1990-0487 , A5AlDS4 A5AlDS5 A5AlDS6 A5AlDS7 A5AlDS8 1990-0487 1990-0487 1990-0487 1990-0487 1990-0487 ; ; ; ; i A5AlDS9 A5AlEl A5AlE2 A5AlE3 A5AlE4 1990-0487 1251-0600 1251-0600 1251-0600 1251-0600 A5AlE5 A5AlE6 A5AlE7 A5AlE8 A5AlE9 1251-0600 1251-0600 1251-0600 1251-0600 1251-0600 A5AlElO A5AlEll A5A
HP Part Number 85660-60210 A5Al Keyboard Reference Designation HP Part Number C D m - Description Mfr Code Mfr Part Number A5AlS8 A5AlS9 A5AlSlO A5AlSll 5060-9436 5060-9436 5060-9436 5060-9436 7 7 7 7 1 1 1 1 SWITCH-PB SWITCH-P8 SWITCH-P8 SWITCH-PB SPST-NO SPST-NO SPST-ND SPST-NO MOM MOM MOM MOM 71468 71468 71468 71468 5560-9436 5560-9436 5560-9436 5560-9436 A5AlS12 A5AlS13 A5AlS14 A5AlS15 A5AlS16 5060-9436 5060-9436 5060-9436 5060-9436 5060-9436 7 7 7 7 7 1 1 1 1 1 SWITCH-PB SWITCH-PB
HP Part Number 85660-60210 ASAI Keyboard Reference Designation A5AlW3 HP Part Number 1757-0346 sty 1 Description RESISTOR 10 +-1X .125W TF TC=O+-100 *Indicates factory-selected value Mfr Code 91637 Mfr Part Number CMF-55-l.
. Jl s,9 p-?J /Il; rls2, I; ) *T iI PI DS4-1 0 I p1 923 524 ;Y) Q a 52s l$kl S26 527 S26 s30 1 s34 0 s33 1 938 8 537 rl 542 69 s41 1 546 47 545 s31 5321% Q 3.
A6 A6 RF Module Replacement Note For location of hardware and cables referred to in this procedure, see Figure 1. Removal 1. Remove ac line cords, separate instrument sections, and remove top, bottom, and right side covers from RF Section. 2. Remove RF front panel. (See A5 Front Panel Removal procedure in A5 Front Panel section.) 3. Remove two clips @) by removing four screws 0. 4. Remove five cables @ from A6 PC boards. 5. Remove A6 RF Module PC cover plate by removing six screws 0. 6.
Figure 1.
A6Al Coaxial Switch and A6A17 300 MHz BPF Replacement Note For location of hardware and cables referred to in this procedure, see Figure 2. 1. Remove front panel from RF Section. (See A5 Front Panel Section for front panel removal procedure.) 2. A6Al Replacement a. Slightly loosen connectors 0, 0, and 0. b. Unsolder wires from the coaxial switch. 1 (brown) wire from input Q) 3 (orange) wire from input @@ 2 (red) wire from input @ c. Release coaxial switch @ by removing two screws 0. d.
(2 PLACES) Figure 2. A6Al Coaxial Switch and A6A17 300 MHz BPF Replacement A6A2 RF Attenuator Replacement Note For location of hardware and cables referred to in this procedure, see Figure 3. Removal 1. Remove front panel from RF Section. (See A5 Front Panel Section for front panel removal procedure.) 2. Remove top and bottom covers from RF Section. 3. Disconnect attenuator cables 0. 4. Remove two screws @ used to attach attenuator bracket to motherboard. 5.
Installation 11. Attach attenuator bracket to attenuator by replacing two screws 0. 12. Place attenuator (attached to bracket) in RF Module. 13. Connect attenuator ribbon cable connector @ to motherboard connector. 14. Align attenuator connectors Q) with cable connectors and tighten cable connectors. 15. Replace two screws @ used to attach attenuator bracket to “totem pole” assembly. 16. Replace two screws @ used to attach attenuator bracket to motherboard. 17. Replace A6A9 Phase Lock assembly. 18.
P 1 2 PLACES) 2 PLACES) Figure 3.
9 6 7 4 4 (2 PLACES) Figure 3.
A6A4 Second Converter Replacement Note For location of hardware and cables referred to in this procedure, see Figure 4. Removal 1. Remove ac line cords and RF Section bottom cover. 2. Disconnect connectors 0, @ and 0, single-pin connector 0, and double-pin connector @ from Second Converter. 3. Disconnect the remaining cables from Second Converter 1 (brown) cable from .321 OUT (7J 4 (yellow) cable from TUNE @ 4. Remove two screws @ to remove Second Converter from A6 RF Module. Installation 5.
PL ACE S) Figure 4. A6A4 Second Converter Replacement A6A6 First Converter Replacement Note For location of hardware and cables referred to in this procedure, see Figure 5. Removal 1. Remove ac line cords, IF-Display Section, and RF Section top cover. 2. Remove two screws @ to release A6A6 First Converter from A6 RF Module. Disconnect connectors @ from A6A6 First Converter. Installation 3. Position new A6A6 First Converter in RF Module and reconnect connectors 0. Reinstall two screws 0. 4.
(2 PLACES) Figure 5. A6A6 First Converter Replacement A6A15 3.6 GHz BPF, A6A16 LPF, and A6A18 LPF Replacement Note For location of hardware and cables referred to in this procedure, see Figure 6. 3 Removal 1. Remove ac line cords, separate instrument sections, and remove top and bottom covers from RF Section. 2. Remove five cables Q) from A6 PC boards; three from A6A9 and two from A6A12. 3. Remove RF Module PC board cover by removing six screws 0. 4.
13. Disconnect cable between front-panel IF OUTPUT connector and A6A5 ACLU at the ACLU. 14. Disconnect cable between front-panel IF INPUT connector and A6A16 LPF at the LPF. 15. Disconnect wire harness plug from motherboard and position wire harness such that the “totem pole” assembly can be removed. 16. Remove two screws @ attaching the “totem pole” assembly to the motherboard and two screws @ attaching the “totem pole” assembly to the attenuator bracket. 17.
30. Reconnect all wire harness connectors to A6A5 ACLU and A6A4 2nd Converter as follows. A6A4 2nd Converter n green (5) Wire to IE white/brown (91) wire to V, white/black (90) wire to SW n A6A5 ACLU gray (8) wire to BIAS white/red (92) wires to +5 V dc (three pins) 31. Reconnect wire harness to motherboard. 32. Replace A6A9 assembly and A6A10, A6Al1, and A6A12 PC boards. 33. Replace PC board cover and install six screws 0. 34. Reconnect 4 (yellow) cable and 5 (green) cable to 2nd Converter. 35.
I II’ (3 PLACES) TOTEM POLE ASSEMBLY / A6A4 SECOND CONVERTER A6A5 ACLU A6A16 1 . 5 GHz LPF A6A18 4 . 0 GHz LPF (CABLE) d 5 (2 PLACES) 6 0 (2 PLACES) A6i15 3 . 6 GHz BPF AiA6 F I RST CONVERTER Figure 6.
A6All A6W16 A6AlO A6W12 A6W17 A6A9A1 DSI UNLOCK INDICA ,TOR WI Wll A6W15 A6W19 A6W3 A6W14 A6W12 A6W18 -j---- A6A8 A6A3 A6W6 A6A4 A6A7 A6W15 A6Wll A6W2 ‘TOTEM POLE’ ASSEMBLY (SEE SHEET 3 OF THIS FIGURE) A6A14 A6’i’l A6i2 A6’ilO A6W8 A6W13 A6W7 A6W23 A6W20 Figure 7.
A6A13 / 3 P 2 3 0 /o 5 (3 PLACES) (2 PLACES) $ 10 11 Figure 7.
A6A4 (2 PL A6W13 ROUTES TO FRONT PANEL A6Al5/[ 7 ,/.A/- \ 6 (2 PLACES) (2 PLACES) Figure 7.
(2 PLACES) A6J2 A6J3 A6J4 A6J.5 A6Jl 9(2 P L A C E S ) \ ,@(6 PLACES) A6W20 A6W2 A6W3 (2 PLACES) Figure 7.
A23W6 (6 P L A C E S ) 0 v ,A1 w A23W7 A PLACES) 46W7 lo A6A18 PLACES) I / 7 / 36 0 1 I I -d w I I .!A6 \ i (2 PLACES) (2 PLACES) Figure 7.
Iten HP Part Number Description :I: Mfr Code M f r Pari Number 1 0400-0009 9 GROMMET, RUBBER (FOR W2) 28480 04004009 2 8566900021 6 AIR DUCT, RF MODULE 28480 85660-0002 3 8566@0001, 9 BRACKET, MAIN, RF MODULE 28480 85660-0001 4 2360-0116 5 SCREW, MACH, 632, .312-IN LG, FLAT HD 28480 2360-0116 5 856690002: 9 HEAT SINK, YTX CURRENT DRIVER 28480 85660-0002 6 0520-0137 8 SCREW, MACH, 2-56, .
- Qty - - Reference Designator HP Part Number CE RF Module Description Mfr Code MD Part Number A6Al 31066029 2 1 RF SWITCH SPDT F SMA 28480 3106-0029 A6Al 85660-60101 0 1 RF SWITCH (OBSOLETE. ORDER HP PART NUMBER 8566@60228 FOR REPLACEMENT.) 28480 85660-60101 A6A2 B5660-60336 3 1 RF ATTENUATOR/ERROR CORRECTION ROM (INCLUDES A12U8) 28480 85660-60336 A6A2 55660-60304 5 1 RF ATTENUATOR/ERROR CORRECTION ROM (INCLUDES A12U8) (OBSOLETE.
- RF Module (continued) HP Part Number ZL - Qt: - A6All 85660-60121 9 1 BOARD ASSEMBLY, SLOPE GENERATOR (SERIAL NUMBER PREFIXES: 2410A-2611A) 28481 cl 85660-6012e A6A12 85660-60361 9 1 BOARD ASSEMBLY, YIG-TUNED MIXER (YTX) DRIVER (SERIAL NUMBER PREFIXES: 2936A AND ABOVE) 2848(3 85660-60366 46A12 55660-6023! 1 1 BOARD ASSEMBLY, YIG-TUNED MIXER (YTX) DRIVER (SERIAL NUMBER PREFIXES: 2503A-2928A 1 Reference Designato Description Mfr ,Cod’ e Mfr Part Number 2848(I 85660-6023 a 46A12 !
RF Module (continued) Reference Designator HP Part CD Qty Number Description Mfr Code Mfr Part Number A6W8 85660-20104 9 1 CABLE ASSEMBLY, COAX A6A5 ACLU TO A6J2 (FRONT PANEL) (1ST LO OUTPUT) 28480 85660-2010~ A6WlO 85660-20081 1 1 CABLE ASSEMBLY, COAX A6A15 3.6 GHZ TO AFA4 SECOND CONVERTER (3621.4 MHZ) BPF 28480 85660-20081 A6Wll 85660-60055 3 1 CABLE ASSEMBLY, COAX 5 A6A4 SECOND CONVERTER TO A6A9 PHASE LOCK (3.
A6A3 A6A3 Last Converter, Circuit Description The Last Converter has three main purposes: 1. Converting the 321.4 MHz IF signal from the A6 RF Module down to 21.4 MHz for processing by the IF-Display Section. 2. Providing the means for correcting for variations in conversion loss versus frequency in the input circuitry. 3. Filtering out 278.6 MHz image response. The Last Converter consists of 11 basic elements. They are a 321.4 MHz amplifier, a 321.4 MHz bandpass filter, a 321.4 to 21.4 MHz converter a 21.
21.4 MHz Preamplifier 0 The 321.4 to 21.4 MHz converter drives the 21.4 MHz preamp which consists of Q6 and its associated components. Q5 provides bias for Q6 by setting the base current. LlO, C22, and C23 form a series resonant circuit producing a notch in the frequency response of this amplifier at 10.7 MHz. This is to prevent the second harmonic of 10.7 MHz from causing a spurious response.
Q OUT Figure 1. Step Gain Amplifier, Simplified Schematic Amplitude Calibration Attenuator @ Q2 is an emitter follower buffer driving a second pin diode attenuator, CR11 to CR14. The current through CR11 and CR12 is determined by the front-panel control A6R1, AMPTD CAL. The current through CR13 and CR14 is fixed by R27. This circuit provides for amplitude calibration of the instrument. 21.4 MHz Output @ Qll and Q12 form the output stage for the Last Converter.
A6A3 Last Converter Replacement For location of hardware and cables referred to in this procedure, see Figure 2. Note Removal 1. Remove ac line cords and RF Section bottom and right side covers. 2. Disconnect cables @: three from top of A6A9 Phase Lock assembly and two from A6A12 YTX Driver board. 3. Remove A6 RF Module PC cover plate by removing six screws 0. 4. Remove A6A9 assembly and A6Al0, A6Al1, and A6A12 PC boards from the A6 RF Module.
I Figure 2.
FRONT VIEW (3 PLACES) (34 PLACES) A6A3A 1 INTERNAL VIEW OF REAR 3 2 1 . 4 - 2 1 . 4 M H z 321.4MHz CONVERTER AMPLIFIER Q 5 Ll L2 L3 L4 L5 A6A3A 1 3 2 1 .4MIiZ BPF Figure 3.
REAR VIEW @ @ 0 @ @ @ 63 @ 0 @ @ 63 @ @ 63 L2 Item HP Part Number L3 CD L4 @ 63 @ @ A6A3A 1 L5 Description Mfr Code Mfr Part Number 1 85660-20065 COVER, BOTTOM, LAST CONVERTER 28480 85660- 2006: 2 2200-0144 SCREW, MACH, 4-40, .
HP Part Number 85660-60003 A6A3 Last Converter w - HP Part Number C A6A3 35660-60003 1 1 LAST CONVERTER ASSEMBLY 28480 85660-60003 A6A3Al A6A3Ll A6A3L2 A6A3L3 A6A3L4 35660-60002 3135-0002 3135-0002 )135-0002 )135-0002 0 8 8 8 8 1 1 1 1 1 LAST CONVERTER BOARD ASSEMBLY FILTER-LOW PASS SOLDER-TERMS FILTER-LOW PASS SOLDER-TERMS FILTER-LOW PASS SOLDER-TERMS FILTER-LOW PASS SOLDER-TERMS 28480 33095 33095 33095 33095 85660-60002 51-744-018 51-744-018 51-744-018 51-744-018 A6A3L5 A6A3MP3 A6A3MP4 A
HP Part Number 85660-60002 A6A3Al Last Converter Reference Designation HP Part C Number D Qty Mfr Code Description Mfr Part Number A6A3Al 85660-60002 0 1 BOARD ASSEMBLY LAST CONVERTER 28480 85660-60002 A6A3AlCl A6A3AlC2 A6A3AlC3 A6A3AlC4 A6A3AlC5 0160-3877 0160-3878 0160-3877 0160-3878 0160-3878 5 6 5 6 6 1 1 1 1 1 CAPACITOR-FXD CAP-FXD 1OOOpF CAPACITOR-FXD CAP-FXD 1OOOpF CAP-FXD 1OOOpF 04222 04222 04222 04222 04222 SR202ClOlMAAH SR201C102MAAH SR202ClOlMAAH SR201C102MAAH SR201C102MAAH A6A
HP Part Number 85660-60002 A6A3Al Last Converter Reference Designation HP Part Number c 0 at] - Mfr Part Number Mfr Code Description A6A3AlC47 A6A3AlC48 A6A3AlC49 A6A3AlC50 0160-3879 0160-3879 0160-3879 0160-4892 7 I I E 1 1 1 1 CAPACITOR-FXD .OlUF +-20x 1OOVDC CER CAPACITOR-FXD .OlUF +-20% 1OOVDC CER CAPACITOR-FXD .
HP Part Number 85660-60002 A6A3Al Last Converter Reference Designation HP Part Number a - Description Mfr Code Mfr Part Number A6A3AlL2 9100-2891 4 1 INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX. 24226 lOMOSOK-1 A6A3AlL3 A6A3AlL4 A6A3AlL5 A6A3AlL6 A6A3AlL7 9100-2255 85660-80002 85660-80001 85660-80001 85660-80001 4 2 1 1 1 1 1 1 1 1 INDUCTOR RF-CH-MLD 470NH +-lo% .
HP Part Number 85660-60002 A6A3Al Last Converter Reference Designation HP Part Number Description XY - Mfr Code Mfr Part Number A6A3AlR16 A6A3AlR17 A6A3AlR18 A6A3AlR19 1757-0200 1757-0447 1757-0418 1698-3441 7 4 9 8 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR 5.621: +-1% .125W TF TC=O+-100 16.2K +-1% .125W TF TC=O+-100 619 +-1% .125W TF TC=O+-100 215 1% .
C23 10.7 MHz NOTCH FILTER ADJUSTMENT 1 16 I J3 21.4 MHz OUT 3 0 0 iii, I N 3 2 1 Jl .4 MHz I N Pl \ \ \ c.1 1 c.10 c9 C8 3 2 1 .
A6A7 YIG-Tuned Mixer (YTX) Current Driver, Circuit Description The YTX Current Driver has three functions: 1. Provides the output stage for the A6A8 YTX coil. 2. Provides filter circuitry for the YTX. 3. Provides control circuitry for the YTX heater. YTX Drive Output @ The YTX drive output consists of Q5, QS, R14 to R17, VR4, and CR3. Q5 and Q6 form a darlington transistor driven by the A6A12 YTX Driver.
100K - - IOK - - RR IK------ - - - - - - - I I I 50” 60° 70” L I , I I I I 80° 90’ loo0 1 loo T E M P “C Figure 1. YTX Thermal Sensor Resistance versus Temperature Characteristics Op-amp Ul, with R2, R3, R4, Ql, and Q7 farms an amplifier with a gain of about 127. In addition, R2 and R3 set a reference voltage at the negative input of the amplifier. Darlington Ql and Q7 is able to provide the large currents required to heat the heater resistor to 75°C.
A6A8 YIG-Tuned Mixer (YTX), A6A5 Amplifier/Coupler/Load Unit (ACLU), Circuit Description The YTX consists of a three-pole tunable bandpass filter and a single-diode microwave harmonic mixer. The 2 to 6 GHz local oscillator (LO) signal enters the ACLU, and is amplified and coupled into the YTX to turn its diode on and off at the LO rate. The diode conduction angle is adjusted with DC diode bias to be optimum for the harmonic of the LO being used.
A6A5 Amplifier/Coupler/Load Unit (ACLU) Replacement For location of hardware and cables referred to in this procedure, see Figure 2. Note 3 Removal 1. Remove ac line cords and RF Section bottom cover. 2. Disconnect connectors 0, @ and @J>, single-pin connector 0, and double-pin connector @ from Second Converter. 3. Disconnect the remaining cables from Second Converter: 1 (brown) cable from .321 OUT 0J 4 (yellow) cable from TUNE @ 4. Remove ACLU cover-plate by removing four screws @ as shown in View A. 5.
A6A5 Amplifier/Coupler/Load Unit (ACLU) Replacement (2 p LACES) (4 PLACES) 2 b VIEW A / 0 / \ - 0 @ (2 PLACES) VIEW B Figure 2.
A6A7 YTX Current Driver Replacement Note For location of hardware and cables referred to in this procedure, see Figure 3. !il Removal 1. Remove ac line cords and RF Section bottom cover. 2. Disconnect 5-pin connector @ and ribbon cable @ from A6A7. 3. Remove two screws @ and remove A6A7 from RF Module. Installation 4. Place A6A7 in RF Module and replace two screws 0. 5. Reconnect 5-pin connector @ and ribbon cable @ to A6A7. 6. Replace bottom cover on RF Section and reconnect ac line cords.
A6A8 YTX Replacement A6A8 YTX Replacement Note For location of hardware and cables referred to in this procedure, see Figure 4. I w Removal 1. Remove ac line cords, separate instrument sections, and remove top and bottom covers from RF Section. 2. Disconnect cable @ between All YTO Loop and RF Module. 3. Remove five cables from RF Module PC boards; three from A6A9 Phase Lock and two from A6A12 YTX Driver. 4. Remove RF Module PC board cover by removing six screws 0. 5.
A6A8 YTX Replacement 16. Reconnect coaxial cables to YTX. 17. Place A6A7 YTX Current Driver in RF Module and secure with two screws 0. 18. Reconnect 5-pin connector @ to A6A7. 19. Replace ribbon cable @ between A6A7 and motherboard. 20. Replace A6A9 assembly and A6A10, A6Al1, and A6A12 PC boards. 21. Reconnect 4 (yellow) cable and 5 (green) cable to 2nd Converter. 22. Replace RF Module PC board cover and secure with six screws 0. 23.
A6A8 YTX Replacement 0 I 1 0 0 0 Q 0 0 * I I Figure 4.
A6A8 YTX Replacement (2 PLACES) 0’ 8 2 PLACES) \ O@ 00 0 @ @ I I @ 0 @ @ 0 0 00 Figure 5.
A6A8 YTX Replacement Item HP Part CD Number Description Mfr Mfr Part Code Number 1 2200-0107 6 SCREW, MACH, 4-40, .375-IN LG, PAN HD 28480 2200-0107 2 0520-0128 7 SCREW, MACH, 2-56, .25-IN LG, PAN HD 28480 0520-0128 3 2190-0014 1 WASHER, LOCK, 2-56, (FOR SCREW (2)) 28480 2190-0014 4 1200-0043 8 INSULATOR, TRANSISTOR (FOR Q6) 28480 1200-0043 5 2200-0109 8 SCREW, MACH, 4-40, .
HP Part Number 85660-60128 A6A7 YTX Current Driver Reference Designatior HP Part Number v . . .
HP Part Number 85660-60128 A6A7 YTX Current Driver Reference Designatior HP Part Number Qt Description A6A7R18 A6A7R19 A6A7R20 A6A7R21 0757-0401 0698-0082 0757-0416 0698-3395 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR 100 +-1% .125W TF TC=O+-100 464 1% .125W TF TC=O+-100 511 +-1% .125W TF TC=O+-100 34.8 1% .5W TF TC=O+-100 A6A7Ul A6A7VR2 A6A7VR4 1826-1058 1902-0967 1902-0644 1 1 1 IC OP AMP GP a-TO-99 PKG DIODE-ZNR 24V 5% DO-35 PD=.4W TC=+.
PC BOARD SIDE DS2 DSl GREEN ON=HEATER \ ONIE9ER CONTROL SATURATED ( S I G N A L iD H E A T E R CONNECTIONS) s DSl DS2 \;- ,/ig&#qg~ I \ I HEAT SINK SIDE A6A7 YTX Current Driver Component Locations, 85660-60128
A6A9 A6A9 Phase Lock, Circuit Description The A6A9 Phase Lock has three major functions: 1. To provide a stable -10.0 dBm, 100 MHz calibrator signal to the RF Section front panel. 2. To provide a 300 MHz local oscillator to the A6A3 Last Converter assembly. 3. To phase-lock the 3.3 GHz second local oscillator in the A6A4 Second Converter assembly to the 33rd harmonic of the 100 MHz reference signal produced by the A7A2 100 MHz VCXO assembly. This 3.3 GHz phase lock loop is called the Heterodyne Loop.
300 MHz Power Amplifier @I The output of the 300 MHz Power Amplifier, approximately +20 dbm, is the local oscillator for the A6A3 Last Converter. Capacitor C30 reduces the sub-harmonic content of the output. The output filter C52, L21, and C53, reduces higher order harmonics while maintaining a 500 output impedance. Sampler Driver @I Amplifier U2 drives the Sampler step-recovery diode (function block E) with the 100 MHz signal at a level of approximately +20 dBm.
Switch and Unlock Detector: When unlock occurs, the output of U4B becomes low, causing U4C to have a low output. The output of U4D becomes positive, turning off Q5. If no lock occurs on the search ramp, the delay caused by resistor R27 and capacitor C37 keeps Q5 off until the next search cycle begins. This delay is different for an HP 85660A RF Section, and is set by the value of R27. Jl J2 DSI @ 60 L16 L17 L14 L1.5 @ (gl LACES) @ @ 0 L14 L17 L16 L18 Figure 1.
A6A9’A 1 Item HP Part Number Description Mfr Code Mfr Part Number 1 2950-0177 NUT, HEX, RF CONNECTOR (FOR 55) 28480 2950-0177 2 2196-6067 WASHER, LOCK, RF CONNECTOR (FOR 55) 28480 2190-0067 3 2950-0078 NUT, HEX, lo-32 (FOR J4) 28480 2950-0078 4 2190-0557 WASHER, LOCK, .195-IN ID (FOR 54) 28480 2190-0557 5 8566CLOOO70 COVER, FRONT, PHASE LOCK ASSEMBLY 28480 85660~0007C 6 2200-0140 SCREW, MACH, 4-40, .250-IN LG, FL HD 28480 2200-0140 7 2200-0109 SCREW, MACH, 4-40, .
HP Part Number 85660-60226 A6A9 Phase Lock Assembly Reference 1 HPPaIrt lC l Designation Number D I A6A9 85660-60226 0 A6A9Al 85660-60202 2 A6A9Jl A6A9J2 A6A9J3 A6A9L14 1250-0544 1250-0544 1250-0544 9135-0002 A6A9L15 A6A9L16 A6A9L17 A6A9L18 A6A9MP2 I I Qtl 1 Description Mfr Code I Mfr Part Number PHASE LOCK ASSEMBLY (SERIAL PREFIX: 2410A-2503A) 28480 85660-60226 28480 85660-60202 9 9 9 8 PHASE LOCK BOARD ASSEMBLY (PART OF A6A9. MAY NOT BE ORDERED SEPARATELY.
HP Part Number 85660-60256 A6A9 Phase Lock Box Reference Designation HP Part Number A6A9 85660-60256 A6A9Al 85660-60253 A6A9AlU2 A6A9OSl A6A9Jl A6A9J2 C c ;Itl - Description Mfr Code Mfr Part Number 1 PHASE LOCK ASSEMBLY (SERIAL PREFIX: 2504A) 28480 85660-60256 : 1 28480 85660-60253 1813-0213 1990-0485 1250-0544 1250-0544 c c 1 1 1 1 PHASE LOCK BOARD ASSEMBLY (PART OF A6A9. MAY NOT BE ORDERED SEPARATELY.) (PARTS LIST INCLUDED IN THIS SECTION.
HP Part Number 85660-60202 A6A9Al Phase Lock Board HP Part Number C c A6A9Al 85660-60202 i A6A9AlCl A6A9AlC2 A6A9AlC3 A6A9AlC4 A6A9AlC5 0160-4835 0160-4574 0160-4574 0160-3874 0160-3878 7 1 1 2 6 A6A9AlC6 A6A9AlC7 A6A9AlCB A6A9AlC9 A6A9AlClO 0160-4084 0160-3878 0160-4494 0160-4494 0160-3878 A6A9AlCll A6A9AlC12 A6A9AlC13 A6A9AlC14 A6A9AlC15 Reference Designation at! 1 Description Mfr Code Mfr Part Number BOARD ASSEMBLY, PHASE LOCK (SERIAL PREFIXES: 2140A-2503A) 28481 85660-60202 5 1 1 1 C
HP Part Number 85660-60202 A6A9Al Phase Lock Board Reference Designation HP Part Number 2 0 Mfr Code Description 31 - Mfr Part Number A6A9AlC48 A6A9AlC49 A6A9AlC50 A6A9AlC51 A6A9AlC52 0160-4084 0160-3878 0160-4801 0160-4801 0160-4492 a E 7 7 2 1 2 1 1 CAPACITOR-FXO .
HP Part Number 85660-60202 A6A9Al Phase Lock Board Reference Designation HP Part Number C c 3Y - Description Mfr Code Mfr Part Number A6A9AlRll A6A9AlR12 2100-2574 0757-0394 : ( 1 1 RESISTOR-TRMR 500 lo% TKF SIDE-AOJ l-TRN RESISTOR 51.1 +-1% .125W TF TC=O+-100 73138 19701 82PAR500 SFR25H A6A9AlR13 A6A9AlR14 A6A9AlR15 A6A9AlR16 A6A9AlR17 0757-0401 0757-0402 0757-0394 0698-3136 0698-3136 ( I ( E I 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 100 +-1% .125W TF TC=O+-100 110 +-1% .
HP Part Number 85660-60253 - A6A9Al Phase Lock Board HP Part Number C D A6A9Al 85660-60253 3 1 PHASE LOCK BOARD ASSEMBLY (SERIAL PREFIX: 2504~) 28480 85660-60253 A6A9AlCl A6A9AlC2 A6A9AlC3 A6A9AlC4 A6A9AlC5 0160-4835 0160-4835 0160-4574 0160-3874 0160-3878 7 7 1 2 6 1 1 1 1 1 CAPACITOR-FXD .lUF +-lo% SOVDC CER CAPACITOR-FXD .lUF +-lo% 50VDC CER CAPACITOR-FXD 1OOOPF +-10x 1OOVDC CER CAPACITOR-FXD 1OPF +-.
HP Part Number 85660-60253 A6A9Al Phase Lock Board Reference Designation HP Part Number C c a! Description Mfr Code Mfr Part Number A6A9AlC53 A6A9AlC54 AGASAlCRl A6A9AlCR2 A6A9AlCR3 0160-4492 0160-3878 1901-0954 1901-0050 1901-0050 i E E 2 2 1 1 1 1 1 CAPACITOR-FXD 18PF +-5% 200VDC CER O+-30 CAP-FXD 1OOOpF 100 V DIODE-CUR RGLTR lN5285 270UA DO-7 DIODE-SWITCHING 80V 200MA 2NS DO-35 DIODE-SWITCHING 80V 200MA 2NS DO-35 04222 0471: 9N171 9N171 FD12COG2D180J SR201C102MAAH lN5285 lN4150 lN4150 A6A9A
HP Part Number 85660-60253 A6A9Al Phase Lock Board Reference Designation HP Part C Number D Qty Description A6A9AlR12 A6A9AlR13 0757-0394 0757-0401 0 0 1 1 RESISTOR 51.1 +-1X .125W TF TC=O+-100 RESISTOR 100 +-1% .
DSI ON= LOCKED TO 300 A6A9Jl MHZ OUT I c29 TRIPLER MATCH TO A6A9J2 100 MHZ CAL OUTPUT TO A6A9J3 100 MHZ INPUT Rl 1 CAL ADJUST A6A9 J4 VT0 TUNE I I 1 16 R38 BALANCE A6A9Al Phase Lock Board Component Locations, 85660-60202
c29 TRIPLER M A T C H T O A6A9Jl DSl O N = 3800 M H Z O\ U T L O C K E D T O A6A9J2 100 MHZ OUT Rll CAL OUTPUT T O A6ASJ3 100 MHZ IN \ \ s =I+] :al,,r;dii~~& PI 1’6 2 T O A6A9J4 TUNE VOLTAGE OUT A6A9Al Phase Lock Board Component Locations, 85660-60253 \ R38 BALANCE
A6AlO A6AlO Miscellaneous Bias/Relay Driver, Circuit Description This assembly is a collection of circuits necessary for proper operation of other assemblies in the A6 RF Module. It contains nine circuits: 1. YTX Diode Bias 2. YTX Linearity Correction 3. 3.3 GHz Oscillator Driver 4. PIN Switch Driver 5. Band Step Gains 6. RF Switch Driver 7. RF Attenuator Driver 8. j-22 V Delay 9.
becomes a voltage follower maintaining the voltage at the cathode of CR5 at the same voltage as on U7 pin 12. In this situation, R32 and R31 are effectively in parallel with the current sense resistor of the coil driver circuit. R31 is used to adjust the magnitude of compensation, while R40 is used to adjust the frequency at which the compensation occurs. In a similar manner, U7A, B, C are used to correct for higher frequency nonlinearity.
RF Attenuator Driver @ The RF attenuator driver is similar to the RF Switch driver. The major difference is the logic decoding to the inputs of the darlington switch drivers. The input to the logic circuit is the standard 10, 20, 40, dB attenuation logic levels. The logic circuit Ul decodes this to the 10, 20, 20, 20, dB attenuation logic levels required to drive the RF attenuator. The output drivers consist of darlington amplifiers driven by the outputs of Ul or the inverted outputs of Ul, via U3.
HP Part Number 85660-60180 A6AlO Miscellaneous Bias/Relay Driver HP Part Number C c A6AlO 85660-60180 I AGAlOCl A6AlOC2 A6AlOC3 A6AlOC4 A6AlOC5 0160-2055 0180-2206 0180-2208 0180-0116 0160-2055 A6AlOC6 A6AlOC7 A6AlOC8 A6AlOC9 AGAlOClO Reference Designation w - Mfr Code Description 1 BOARD ASSEMBLY, MISC BIAS/RELAY DRIVER (SERIAL PREFIXES: 2410~ - 2729A) c 1 f I C 1 1 1 1 1 0160-4441 0160-3879 0180-0097 0160-4441 0180-0228 I 7 7 1 6 AGAlOCll A6AlOC12 A6AlDC13 A6AlOC15 AGAlOCRl 0180-0116 0
HP Part Number 85660-60180 A6AlO Miscellaneous Bias/Relay Driver Reference Designation I HP Part Number c c a! TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR NPN PNP NPN PNP NPN PD=SOOMk PD=400Mk PD=500Mk PD=400MW PD=500MW 0471: 0471: 0471: 0471: 0471: 2N2222A 2N2907A 2N2222A 2N2907A 2N2222A Mfr Code Description Mfr Part Number A6AlOQl A6AlOQ2 A6AlOQ3 A6AlOQ4 A6AlOQ5 11854-0477 11853-0281 11854-0477 11853-0281 I 1854-0477 i C i 1 1 1 1 1 A6AlOQ6 A6AlOQ7 A6AlOQ8 A6AlOQ9 A6AlOQlO I .
HP Part Number 85660-60180 A6AlO Miscellaneous Bias/Relay Driver Reference Designation HP Part Number c c ;Itl Mfr Code Description Mfr Part Number A6AlOR28 A6AlOR29 0698-7260 2100-3611 i I 1 1 RESISTOR 10K +-1% .05W TF TC=O+-100 RESISTOR-TRMR 50K 10% C SIDE-ADJ 17-TRN 19701 32997 50635 3292x-1-503 A6AlOR30 A6AlOR31 A6AlOR32 A6AlOR33 A6AlOR34 0698-7260 2100-1661 0757-0416 0698-3260 2100-1661 I I 7 9 7 1 1 1 1 1 RESISTOR 10K +-I% .
HP Part Number 85660-60180 A6AlO Miscellaneous Bias/Relay Driver Reference Designation HP Part Number 21 - Description Mfr Code Mfr Part Number A6AlOR76 A6AlOR77 A6AlOR78 A6AlOR79 A6AlOR80 2100-1661 0698-7277 0698-7260 0698-7260 0698-7277 7 6 7 7 6 1 1 1 1 1 RESISTOR-TRMR 20K 5% WW SIDE-ADJ 22-TRN RESISTOR 51.1K +-1% .05W TF TC=O+-100 RESISTOR 10K +-1% .05W TF TC=O+-100 RESISTOR 10K +-1% .05W TF TC=O+-100 RESISTOR 51.1K +-1% .
HP Part Number 85660-60322 A6AlO Miscellaneous Bias/Relay Driver Reference Designation A6AlO HP Part Number c c 85660-60322 i 1 Mfr Code Description at! - BOARD ASSEMBLY, MISCELLANEOUS DRIVER (SERIAL PREFIX: 2747~) BIAS/RELAY Mfr Part Number 28480 85660-60322 AGAlOCl A6AlOC2 A6AlOC3 A6AlOC4 A6AlOC5 0160-2055 0180-2206 0180-2208 0180-0116 0160-2055 c 1 E I c 1 1 1 1 1 CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER CAPACITOR-FXD 6OUF+-10% 6VDC TA CAPACITOR-FXD 22OUF+-10% 1OVDC TA CAPACITOR-FXD 6.
HP Part Number 85660-60322 A6AlO Miscellaneous Bias/Relay Driver Reference Designation HP Part Number A6AlOQ7 A6AlOQ8 A6AlOQ9 A6AlOQlO A6AlOQll 1855-0420 1855-0420 1854-0477 1855-0420 1853-0213 A6AlOQ12 A6AlOQ13 A6AlOQ14 A6AlOQ15 A6AlOQ16 1854-0477 1853-0281 1854-0477 1854-0477 1854-0477 A6AlOQ17 A6AlOQ18 A6AlOQ19 A6AlOQ20 A6AlOQ21 1854-0477 1854-0477 1854-0477 1854-0477 1854-0472 AGAlORl A6AlOR2 A6AlOR3 A6AlOR4 A6AlOR5 2100-2574 0698-7260 0698-7260 0698-7277 0698-7260 A6AlOR6 A6AlOR7 A6AlOR8 A6A
HP Part Number 85660-60322 A6AlO Miscellaneous Bias/Relay Driver Reference Designation I HP Part Number c c X! Description - Mfr Code Mfr Part Number A6AlOR34 A6AlOR35 !lOO-1661 1757-0416 1 1 RESISTOR-TRMR 20K 5% WW SIDE-AOJ 22-TRN RESISTOR 511 +-1X .125W TF TC=O+-100 32997 19701 3057P-OM3-203 SFR25H A6AlOR36 A6AlOR37 A6AlOR38 A6AlOR39 A6AlOR40 1698-3260 !lOO-1661 1757-0416 1698-3260 !lOO-1661 1 1 1 1 1 RESISTOR 464K 1% .
HP Part Number 85660-60322 A6AlO Miscellaneous Bias/Relay Driver Reference Designation HP Part Number Mfr Code Description %I - Mfr Part Number A6AlOR84 A6AlOR85 A6AlOR86* A6AlOR87* A6AlOR88* 0698-7260 0698-7260 0698-7265 D698-7266 0698-7258 7 7 2 3 3 1 1 1 1 1 RESISTOR 10K +-1% .05W TF TC=O+-100 RESISTOR 10K +-1% .05W TF TC=O+-100 RESISTOR 16.2K +-1X .05W TF TC=O+-100 RESISTOR 17.8K +-1% .05W TF TC=O+-100 RESISTOR 8.25K +-1% .
2’3 Pl 22 4 4 A6AlO Miscellaneous Bias/Relay Driver Component Locations, 85660-60180
R41 LB2 R42 LB3 , Rl IO ~ “, ,~ u5 , M ; u ggq [l/ppF E --r- n ,,,,,~,,,:,,,~I),I.llli.
A6All A6All Slope Generator, Circuit Description The slope generator takes a voltage which is proportional to YTX frequency and produces a current to control the slope attenuator in the A6A3 Last Converter, which compensates for conversion loss variations of the input mixer within each frequency band.
This information is decoded by U3A and amplified by U5. The outputs of U5 are approximatley +3 V when a band is valid and approximatley -22 V otherwise. These signals are used to drive FET switches on the A6All Slope Generator and the A6A12 YTX Driver. Preselector Peak @J A second latch, UlO, receives the same six lines a U9, but receives a different strobe, LCK5. This strobe is valid when the six lines have preselector peaking information.
Figure 1. Variable Gain Amplifier, Simplified Schematic When the 20 K potentiometer is set to zero, the amplifier has a gain of +1/2; when set to 20 K, the gain is -l/2; and when set to 10 K, the gain is zero. FETs Ql to QlO switch in different 20 K potentiometers for the five bands. The outputs for the two segments at U2 are summed together in Ul. A waveform similar to Figure 2 is present at the output of U2B if a full band is swept (for example, 5.8 to 12.
20K +3v __ ()v-- 1 OK -----------;, A -3v - ’ ‘Obn A BULL BANEND STbRT Figure 2. U2B Output Waveform 10K -_-_-------- START Figure 3.
HP Part Number 85660-60126 A6All Slope Generator Reference Designation HP Part Number Mfr Code Description JtY - Mfr Part Number A6All 85660-60126 9 1 BOARD ASSEMBLY, SLOPE GENERATOR (SERIAL PREFIXES: 2410~ - 2611~) 28480 85660-60126 AGAllCl A6A1 lC2 A6AllC3 A6AllC4 A6AllC5 0180-0291 0160-3877 0180-0229 0180-0116 0180-1746 3 5 7 1 5 1 1 1 1 1 CAPACITOR-FXD lUF+-10% 35VDC TA CAPACITOR-FXD 1OOPF +-20X ZOOVDC CER CAP-FXD 33uF 10 V TA CAPACITOR-FXD 6.
HP Part Number 85660-60126 A6A11 Slope Generator Reference Designation HP Part Number m - Description Mfr Code Mfr Part Number A6AllQ21 A6AllQ22 A6AllQ23 A6AllQ24 AGAllRl 1854-0477 1854-0477 1853-0281 1853-0281 0757-0440 7 7 9 9 7 1 1 1 1 1 TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW RESISTOR 7.5K +-1% .
HP Part Number 85660-60126 A6All Slope Generator Reference Designation HP Part Number 3Y - Description Mfr Code Mfr Part Number A6Al lR57 A6AllR58 2100-3353 0683-3955 8 8 1 1 RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN RESISTOR 3.9M 5% .25W CC TC=-900/+1100 32997 01121 3386X-146-203 CB3955 A6AllR59 A6AllR60 A6AllR61 A6AllR62 A6AllR63 0757-0465 2100-3353 0683-3955 0757-0465 0757-0442 6 8 8 6 9 1 1 1 1 1 RESISTOR 1OOK +-1X .125W TF TC=O+-100 RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN RESISTOR 3.
HP Part Number 85660-60126 A6All Slope Generator Reference Designation HP Part Number A6AllR105 A6AllR106 A6AllR107 A6AllR108 A6AllR109 0757-0438 0757-0200 0757-0346 0757-0346 0757-0346 AGAllRllO AGAllRlll A6AllR113 A6AllR114 A6AllR115 0757-0346 0757-0465 0757-0280 3757-0442 3757-0442 A6AllR116 A6AllR117 A6AllR118 A6AllR119 A6AllR120 c c Qt! 1 Mfr Code Description 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 5.11K +-1% .125W 5.62K +-1% .125W 10 +-1% .125W TF 10 +-1% .125W TF 10 +-I% .
HP Part Number 85660-60238 A6All Slope Generator Reference Designation HPPart Number C D @’ Mfr Code Description Mfr Part Number A6All 85660-60238 4 1 BOARD ASSEMBLY, SLOPE GENERATOR (SERIAL PREFIX: 2613~) 28480 85660-60238 AGAllCl A6AllC2 A6Al lC3 A6AllC4 A6AllC5 0180-0291 0160-3877 0180-0229 0180-0116 0180-1746 3 5 7 1 5 1 1 1 1 1 CAPACITOR-FXD lUF+-10% 35VDC TA CAPACITOR-FXD 1OOPF +-20X EOOVDC CER CAP-FXD 33uF 10 V TA CAPACITOR-FXD 6.
HP Part Number 85660-60238 A6All Slope Generator Reference Designation HP Part Number C 0 a)tJ - Mfr Code Description A6AllQ20 A6AllQ21 A6AllQ22 A6AllQ23 A6A1 IQ24 1854-0472 1854-0477 1854-0477 1853-0281 1853-0281 2 7 7 9 9 1 1 1 1 1 TRANSISTOR NPN SI DARL TRANSISTOR NPN 2N2222A TRANSISTOR NPN 2N2222A TRANSISTOR PNP 2N2907A TRANSISTOR PNP 2N2907A AGAllRl A6AllR2” A6AllR3 A6AllR4 A6AllR5 0757-0440 0698-3453 0757-0465 0698-3260 0757-0465 7 2 6 9 6 1 1 1 1 1 RESISTOR 7.
HP Part Number 85660-60238 A6A11 Slope Generator Reference Designation HP Part Number C D Description 6 8 RESISTOR 1OOK +-1% .125W TF TC=O+-100 RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN 19701 32997 SFR25H 3386X-Y46-203 Mfr Code Mfr Part Number A6AllR56 A6AllR57 0757-0465 2100-3353 A6Al lR58 A6AllR59 A6AllR60 A6AllR61 A6AllR62 0683-3955 0757-0465 2100-3353 0683-3955 0757-0465 RESISTOR 3.9M 5% .25W CC TC=-900/+1100 RESISTOR 1OOK +-1X .
HP Part Number 85660-60238 A6All Slope Generator Reference Designation HP Part Number C 0 B! - Mfr Description Mfr Pat-l Number Code A6AllR104 A6AllR105 A6AllR106 A6AllR107 A6AllR108 0757-0438 0757-0438 0757-0200 0757-0346 0757-0346 3 ? 7 2 2 1 1 1 1 1 RESISTOR 5.11K +-I% .125W TF TC=O+-100 RESISTOR 5.11K +-1% .125W TF TC=O+-100 RESISTOR 5.62K +-1% .125W TF TC=O+-100 RESISTOR 10 +-1% .125W TF TC=O+-100 RESISTOR 10 +-1% .
R84 GAIN R48 Al R66 A2 R51 Bl R69 R54 82 Cl 2: R72 C2 R57 R75 Dl D2 R60 El R78 E2 Pl A6All Slope Generator Component Locations, 85660-60126, 85660-60238
A6A12 A6A12 YIG-Tuned Mixer (YTX) Driver, Circuit Description The YTX Driver receives a voltage proportional to the instrument LO frequency and produces a signal to control current in the YTX coil. Input Differential Amplifier @ This input signal to the YTX Driver comes from the A19 DAC and is -3 V/GHz. For example, as the YTO Loop sweeps from 2 to 6 Ghz, this input signal sweeps from -6 to -18 V. It is buffered by differential amplifier UlA, and appears at TPl.
Sample and Hold @ The output of the bandswitch drives preamp U5. U5 and UlB together form an op amp with U5 a low-noise, low-temperature drift preamplifier. U5, UlB, and U6 are used in a sample and hold circuit as shown in Figure 2. Q15, a JFET, is used as the switch for the sample and hold. The switch is opened (that is, the FET is turned off) whenever a bandcrossing occurs.
YTX Drive Output @ Voltage divider R54 and R55 drive the output stage shown in Figure 3. R, and the output transistor are on A6A7 YTX Current Driver. The YTX has a nominal coil sensitivity of 75 MHz/mA. R63 and R66 provide the means for compensating for variations amount YTXs. When the YTX center frequency is tuned to 5.8 GHz, the voltage at pin 3 of U3 is +1.52 V. There is no voltage across R66 so it has no effect. R63 is adjusted for tracking at 5.8 GHz and R66 is adjusted at 2 Ghz.
Since these RC combinations have long time constants, they cannot readily respond to the transients produced at band crossings and scan resets. Therefore, whenever the sample and hold circuit is holding, R24 to R26 are shorted by Q4 to QS respectively. +9 V and -9 V Reference Supplies @I U2B and U7B and their associated circuitry form -9 V and +9 V reference supplies used in the YTX Driver, and elsewhere in the A6 RF Module.
HP Part Number 85660-60013 A6A12 YTX Driver HP Part Number C c A6A12 85660-60013 A6AlZCl* A6AlZC2" A6AlZC4 A6AlZC5 A6AlZC6 0180-2205 0180-0218 0160-0571 0160-0571 0180-0197 A6AlZC7 A6A12C8 A6A12C9 A6A12ClO A6A12Cll* Reference Designation Mfr Code Mfr Part Number at! - Description : 1 BD ASSEMBLY, YIG-TUNED MIXER (YTX) DRIVE (SERIAL PREFIXES: 2410~ - 2449A) 28480 85660-60013 : 4 C C E 1 1 1 1 1 CAPACITOR-FXD .33UF+-10% 35VDC TA CAPACITOR-FXD .
HP Part Number 85660-60013 A6A12 YTX Driver Reference Designation HP Part Number C 0 at] - Mfr Code Description 2N4393 2N4393 2N4391 2N4391 214391 A6AlZQ2 A6AlZQ3 A6A12Q4 A6A12Q5 A6A12Q6 1855-0414 1855-0414 1855-0420 1855-0420 1855-0420 4 4 2 2 2 1 1 1 1 1 TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR J-FET J-FET J-FET J-FET J-FET TO TO TO TO TO 17856 17856 17856 17856 17856 214393 2N4393 2N4391 2N4391 2N4391 A6A12Q7 A6A12Q8 A6A12Q9 A6A12QlO A6A12Qll 1855-0414 1855-0414 1855-0414 18
HP Part Number 85660-60013 A6A12 YTX Driver Reference Designation HP Part Number Description JtY - Mfr Code Mfr Part Number A6A12R31 A6A12R32 0757-0280 0757-0280 3 3 1 1 RESISTOR 1K +-1% .125W TF TC=O+-100 RESISTOR 1K +-1% .125W TF TC=O+-100 19701 19701 SFR25H SFR25H A6A12R33 A6A12R34 A6A12R35 A6A12R36 A6A12R37 0757-0442 0757-0465 0757-0442 0698-3157 0698-3157 9 6 9 3 3 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 10K +-1% .125W TF TC=O+-100 1OOK 1% .125W F TC=O+-100 10K 1% .
HP Part Number 85660-60013 A6A12 YTX Driver Reference Designation HP Part Number A6A12R79 A6A12R80 A6A12R81 A6A12R82 A6A12R83 1698-3161 1698-3161 1698-3161 !lOO-1661 1100-1661 A6A12R84 A6A12R85 A6A12R86 A6A12R87 A6A12R88 '100-1661 '100-1661 1698-3453 1698-3453 1698-3453 A6A12R89 A6A12R90 A6A12R91 A6A12R92 A6A12R93 1698-3453 1757-0280 1757-0280 1757-0280 1757-0280 A6A12R94 A6A12R95 A6A12R96 A6A12R97 A6A12R98 21 - Mfr Code Description 1 1 1 1 1 RESISTOR 38.3K 1% RESISTOR 38.3K 1% RESISTOR 38.
HP Part Number 85660-60013 A6A12 YTX Driver Reference Designation HP Part Number sty - Description Mfr Code Mfr Part Number A6A12U3 A6A12U4 .B26-0162 iO81-8117 8 3 1 1 IC PREAMPLIFIER TO-99 PKG SCREEN 1826-0092 27014 28480 LM321H 5081-8117 A6A12U5 A6A12U6 A6A12U7 A6A12U8 A6A12VRl 1826-0162 1826-0371 iO81-8117 1826-1058 1902-3203 8 1 3 3 6 1 1 1 1 1 IC PREAMPLIFIER TO-99 PKG IC OP AMP LOW-BIAS-H-IMPD TO-99 PKG SCREEN 1826-0092 IC DP AMP GP 8-TO-99 PKG DIODE-ZNR 14.7V 5% DO-35 PD=.
HP Part Number 85660-60235 A6A12 YTX Driver HP Part Number C c A6A12 85660-60235 A6A12Cl* A6A12C2" A6A12C4 A6A12C5 A6A12C6 Reference Designation Mfr Code Mfr Part Number X! - Description I 1 8D ASSEMBLY, YIG-TUNED MIXER (YTX) DRIVE (SERIAL PREFIX: 2503~ - 2928A) 28480 85660-60235 0180-2205 : 1 56289 1500334X9035A2-DYS 0160-0571 0160-0571 0180-0197 C E c 1 1 1 CAPACITOR-FXD .
HP Part Number 85660-60235 A6A12 YTX Driver Reference Designation HP Part Number 2 3 Mfr Code Description Jo - Mfr Part Number A6A12Ql A6A12Q2 A6A12Q3 A6A12Q4 A6A12Q5 1855-0414 1855-0414 1855-0414 1855-0420 1855-0420 4 4 4 2 2 1 1 1 1 1 TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR J-FET J-FET J-FET J-FET J-FET 2N4393 2N4393 2N4393 2N4391 2N4391 N-CHAN N-CHAN N-CHAN N-CHAN N-CHAN D-MODE D-MODE D-MODE D-MODE D-MODE 17856 17856 17856 17856 17856 2N4393 2N4393 2N4393 2N4391 2N4391 A
HP Part Number 85660-60235 A6A12 YTX Driver Reference Designation HP Part Number C D Description sty - Mfr Code Mfr Part Number A6A12R29 A6A12R30 0698-3453 0757-0280 2 3 1 1 RESISTOR 196K 1% .125W TF TC=D+-100 RESISTOR 1K +-1% .125W TF TC=O+-100 19701 19701 SFR25H SFR25H A6A12R31 A6A12R32 A6A12R33 A6A12R34 A6A12R35 0757-0280 0757-0280 0757-0442 0757-0438 0757-0438 3 3 9 3 3 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 1K +-1% .125W TF TC=O+-100 1K +-1% .
HP Part Number 85660-60235 A6A12 YTX Driver Reference Designation HP Part Number Ml - Mfr Description Mfr Part Number Code A6A12R77 A6A12R78 A6A12R79 A6A12R80 A6A12R81 0757-0465 0698-3161 0698-3161 0698-3161 0698-3161 E 9 9 9 9 1 1 1 1 1 RESISTOR 1OOK +-I% .125W TF TC=O+-100 RESISTOR 38.3K 1% .125W TF TC=D+-100 RESISTOR 38.3K 1% .125W TF TC=O+-100 RESISTOR 38.3K 1% .125W TF TC=O+-100 RESISTOR 38.3K 1% .
HP Part Number 85660-60235 A6A12 YTX Driver Reference Designation HP Part Number C c at! - Mfr Code Description A6A12TP5 A6A12TP6 1251-0600 1251-0600 c c 1 1 CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ CONNECTOR-SGL CONT PIN 1.14~MM-BSC-SZ A6A12Ul A6A12U2 A6A12U3 A6A12U4 A6A12U5 iO81-8117 iO81-8117 .826-0162 iO81-8117 .
HP Part Number 85660-60366 A6A12 YTX Driver HP Part Number C c A6A12 85660-60366 ! A6A12Cl* A6A12C2” A6A12C4 A6A12C5 A6A12C6 0180-2205 0160-0571 0160-0571 0180-0197 ( ( E A6A12C7 A6A12C8 A6A12C9 A6A12ClO A6A12Cll* 0160-3097 0160-3879 0160-3097 0180-0197 3180-1735 A6A12C12 A6A12C13 A6A12C14 A6A12C15 A6A12C16 Reference Designation Mfr Code Mfr Part Number ;Itl - Description 1 30 ASSEMBLY, YIG-TUNED MIXER (YTX) DRIVE (SERIAL PREFIX: 2936A) 28480 85660-60366 1 56289 150D334X9035A2-DYS 1
HP Part Number 85660-60366 A6A12 YTX Driver Reference Designation HP Part Number A6A12MP2 A6A12MP3 A6A12MP4 A6A12Ql A6A12Q2 1480-0073 4040-0749 4040-0750 1855-0414 1855-0414 A6A12Q3 A6A12Q4 A6A12Q5 A6A12Q6 A6A12Q7 C c t I! i 1 Mfr Code Description 3 Mfr Part Number PIN-ROLL .062-IN-DIA .25-IN-LG BE-CU EXTR-PC 8D BRN POLYC .062-IN-BD-THKNS EXTR-PC BD RED POLYC .
HP Part Number 85660-60366 A6A12 YTX Driver Reference Designation Mfr Code Description HP Part c Number D QtY Mfr Part Number A6A12R25 A6A12R26 2100-3353 2100-3357 8 2 1 1 RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN RESISTOR-TRMR 500K 10% TKF SIDE-ADJ l-TR 32997 32997 3386X-Y46-203 3386X-Y46-504 A6A12R27 A6A12R28 A6A12R29 A6A12R30 A6A12R31 0698-3453 0698-3453 0698-3453 0757-0280 0757-0280 2 2 2 3 3 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 19701 19701 19701 19701 19701 SFR25H SFR
HP Part Number 85660-60366 A6A12 YTX Driver Reference Designation I HP Part Number C c A6A12R73 A6A12R74 A6A12R75 A6A12R76 A6A12R77 (1698-3151 (1757-0442 (1698-8161 (1757-0442 11757-0465 A6A12R78 A6A12R79 A6A12R80 A6A12R81 A6A12R82 (1698-3161 ()698-3161 c1698-3161 c1698-3161 2!lOO-1661 E 9 9 A6A12R83 A6A12R84 A6A12R85 A6A12R86 A6A12R87 ;Itl - Mfr Code Description 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 9 7 1 1 1 1 1 RESISTOR 38.31: 1% .125W RESISTOR 38.3K 1% .
HP Part Number 85660-60366 A6A12 YTX Driver Reference Designation HP Part Number C D 31 - A6A12R121 A6A12R122 3757-0438 3757-0442 3 9 1 1 RESISTOR 5.11K +-1% .125W TF TC=O+-100 RESISTOR 10K +-1% .125W TF TC=O+-100 A6A12R123 A6A12TPl A6A12TP2 A6A12TP3 A6A12TP4 1757-0465 1251-0600 1251-0600 L251-0600 1251-0600 6 0 0 0 0 1 1 1 1 1 RESISTOR 1OOK +-1% .125W TF TC=O+-100 CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ CONNECTOR-SGL CONT PIN 1.
D3 D2 Dl I ~00000000000000~l 1 1 6 + + R24 D3 R’25 D2 + + +.
HP Part Number 85660-60014 A6A13 RF Module Motherboard HP Part Number C c A6A13 85660-60014 1 1 BOARD ASSEMBLY, RF MODULE MOTHERBOARD 28480 85660-60014 A6A13Cl A6A13C2 A6A13C3 A6A13C4 A6A13C5 0180-2216 0180-1997 0180-2144 0180-1819 0160-3879 f t c : ; 1 1 1 1 1 CAP-FXD 35OuF 16 V CAP-FXD 2OuF 150 V CAP-FXD 2OOuF 25 V CAP-FXD 1OOuF 50 V CAPACITOR-FXD .
3 0 0 rl I 1 I 1 I 1 0 0 1J31 0 0 r XA6A9 m 0 -1 I Jl XAGAlO 1 XA6All 0 XA6A12 0 -I 1 0 0 A6A13 RF Module Motherboard Component Locations, 85660-60014
A7 A7 M/N Reference, Troubleshooting Reference All phase lock loops in the HP 8566B are referenced to the A22 10 MHz Frequency Standard. The 10 MHz Frequency Standard is used to directly phase-lock the A7A2 100 MHz VCXO only. All other phase lock loops receive their reference from either the A7Al or A7A2 (10 and 20 MHz from the A7Al and 100 and 400 MHz from the A7A2).
For example: If M = 26, N = 20, and VCO Frequency = 187.0 MHz, then M/N output frequency = N (VCO) = 20 x 187.0 = 3,740 MHz. If M is changed to 25, then the VCO frequency changes to 187.5 MHz, and the M/N output frequency changes to 3,750 MHz (20 x 187.5). Result = 10 MHz change for M divider change of 1. An incorrect M or N number, due to the main controller or a bad latch on A7A3, can be easily detected.
3. Remove clear plastic shield from motherboard (Figure 1) by removing all screws. Remove eight screws @ from the motherboard. Screws are marked on motherboard with the letter B for easy identification. Note I I CLEAR PLASTIC SHIELD Figure 1. A7 M/N Reference Removal and Installation 4. Position A7 section in RF Section and secure with eight screws 0. Replace clear plastic shield over motherboard. Reconnect cables removed in step 2. 5. Replace RF Section top and bottom covers.
( 6 PLACES)Q Q 9 10 ck 8 0' 7 d n3I / \ 47A5P 1 n A7A5 “‘ZE 1I \ \ \ C6 CQ u - - c15 c7 C8 \ j / a /I \ \ / Iiji’iDET , j 100 MtiZ “CXD OETr XA7A1 L Circuit Figure 2.
H P Part Number CD 1 86701-40001 9 EXTRACTOR, PC BOARD 48280 86701-40001 2 2200-0105 4 SCREW, MACH, 4-40, .
A7Al A7Al Reference Phase Detector, Circuit Description The A7Al Reference Phase Detector contains the frequency divider, phase detector, and integrating amplifier for the 100 MHz Reference phase-lock loop. Basically, 100 MHz from the A7A2 VCXO is divided by 10 and compared to the 10 MHz frequency reference by the phase detector. The error voltage from this comparison is fed back to the VCXO to keep its frequency locked to 10 times that of the frequency reference.
Integrating Amplifier @ Q4 is a differential input pair which together with Q5 and Q6 forms a high gain amplifier. Feedback is added with C32 and R49 to make an integrating amplifier. C32 provides ac feedback only, so for the amplifier to remain linear, dc feedback is accomplished by virtue of the entire phase-lock loop. VCXO Divider and Buffers @ 100 MHz from the A7A2 VXCO is applied to the counter U3 which divides by 5, then by 2.
A7Al Reference Phase Detector, Troubleshooting The A7Al Reference Phase Detector compares the output of the 10 MHz Frequency Standard to the output of the A7A2 100 MHz VCXO and provides the tuning drive voltage for the VCXO. A phase lock detector in A7Al indicates to the main processor (A15) the state of the Reference Phase Lock Loop. Samplers @, @ The Phase Lock and Lock Indicator Samplers are identical. The diodes are biased to approximately the same level in each.
Q2 Figure 1. Outputs of 49 Phase Amplifiers Oscilloscope Settings Vertical 0.05 V/Div AC Horizontal 0.05 ps/Div Probe 1O:l Analyzer Settings INSTR PRESET Table 2. Phase Amplifier Voltage Levels Voltage Levels Ql Q2 Emitter -8.0 -8.0 Base -7.4 -7.4 Collector -3.6 -3.6 Limiting Amplifier @ The Limiting Amplifier shapes and amplifies the 10 MHz reference from the Frequency Standard (A22). Typical voltage levels for Ul are shown in Table 3. Table 3.
Table 3. Limiting Amplifier Voltage Levels LJl Pin Number dc Voltage Level 1 +5.0 2 0.0 3 +0.5 4 0.0 5 +2.3 6 +2.3 7 +1.6 8 I t5.0 Pulse Generator @ Typical input/output waveforms for the Pulse Generator are shown in Figure 2 and Figure 3. Figure 2. Pulse Generator Input Waveforms Oscilloscope Settings Vertical Horizontal Probes Channel A Channel B 0.1 V/Div ps/Div X10 Magnifier 1O:l U2B Pin 5 U2A Pin 2 0.
Figure 3. Pulse Generator Output Pulses Oscilloscope Settings Vertical Horizontal Probe Channel A 0.1 V/Div 0.05 ps/Div 1O:l U2B Pin 4 (TPl) Analyzer Settings INSTR PRESET Buffer Amplifier @ Typical voltage levels for the Buffer Amplifier are shown in Table 4. Table 4. Buffer Amplifier Voltage Levels 1 Voltage Level: s Q3 Q7 Emitter -4.6 -4.6 Base -4.5 -4.5 Collector -0.3 -9.4 Integrating Amplifier @ Typical voltage levels for the Integrating Amplifier are shown in Table 5.
Note The 100 MHz VCXO Tune Voltage can be measured at A7A2TPl. However, the voltage levels will be slightly lower than those listed above. Table 5. Integrating Amplifier Voltage Levels lhnsistors de Voltage Levels 24A Pin 1 +0.18 Pin 2 +9.8 0.0 (locked) Pin 3 0.0 (no 10 MHz) Ref. +O.l (no 100 MHz) VCXO ?4B Pin 4 +0.18 Pin 5 +9.8 Pin 6 +o.o 25 E m i t t e r +10.3 Base +9.8 Collector Gnd 26 E m i t t e r +10.3 Base +9.8 Collector -6.
HP Part Number 85660-60015 A7Al Reference Phase Detector m - Description 5 1 BOARD ASSEMBLY, REFERENCE PHASE DETECTOR 28480 85660-60015 0180-0197 0180-0197 0180-1746 0160-3879 0140-0190 8 8 5 7 7 1 1 1 1 1 CAPACITOR-FXD 2.2UF+-10% 20VDC TA CAPACITOR-FXD 2.2UF+-10% 20VDC TA CAPACITOR-FXD 15UF+-10% ZOVDC TA CAPACITOR-FXD .
HP Part Number 85660-60015 A7Al Reference Phase Detector Reference Designation HP Part Number C c 3t - Description Mfr Cod1 e Mfr Pat-l Number 0902 !3 0902 !3 805-504 Y5V 1032 CD15FD271J03 CD15ED510J03 805-504 Y5V 1032 A7AlC47 A7AlC48 A7AlC49 A7AlC50 0160-2055 0140-0210 0160-2201 0160-2055 I L i c 1 1 1 1 CAPACITOR-FXO .OlUF +80-20% IOOVOC CER CAPACITOR-FXD 270PF +-5% 300VDC MICA CAPACITOR-FXD 51PF +-5% 300VDC MICA CAPACITOR-FXD .
HP Part Number 85660-60015 A7Al Reference Phase Detector Reference Designation HP Part Number C 0 w - Mfr Code Description Mfr Part Number A7AlMP7 8151-0013 4 1 WIRE 22AWG 1X22 92194 298 A7AlMP8 A7AlMP9 A7AlQl A7AlQ2 A7AlQ3 85660-20045 86701-40001 1854-0019 1854-0019 1854-0019 7 9 3 3 3 1 1 1 1 1 CASTING, COVER PC EXTRACTOR TRANSISTOR NPN SI TO-18 PD=360MW TRANSISTOR NPN SI TO-18 PD=360MW TRANSISTOR NPN SI TO-18 PD=360MW 2848C 2848C 04713 04713 04713 85660-20045 86701-40001 A7AlQ4 A7AlQ
HP Part Number 85660-60015 A7Al Reference Phase Detector - Reference Designation HP Part Number C c Description lit: Mfr Code Mfr Part Number A7AlR38 A7AlR39 A7AlR40 A7AlR41 0757-0421 0757-0440 0757-0394 0698-3446 L i c : 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR 825 +-1% .125W TF TC=O+-100 7.5K +-1% .125W TF TC=O+-100 51.1 +-1% .125W TF TC=O+-100 383 1% .
HP Part Number 85660-60015 A7Al Reference Phase Detector Reference Designation A7AlWl HP Part Number 15660-60084 Description CABLE ASSEMBLY, GRAY/ORANGE (INCLUDES 52) *Indicates factory-selected value Mfr Code 28480 Mfr Part Number 85660-60084 85660-60015 Parts List Page 5 of 5
I- E-l l$j fg DEC I I P.
A7A2 A7A2 100 MHz Voltage-Controlled Crystal Oscillator (VCXO), Circuit Description A7A2 consists of a 100 MHz voltage-controlled crystal oscillator, buffer amplifiers, and a frequency quadrupler. In conjunction with A7Al Reference Phase Detector, it forms the reference phase-lock loop. Outputs of 100 MHz and 400 MHz are used as frequency references by other assemblies in the instrument. 100 MHz Oscillator @ Q5 functions as a common-base amplifier with feedback to form an oscillator.
A7A2 100 MHz VCXO, Troubleshooting The 100 MHz VCXO supplies all of the fixed reference frequencies for the HP 8566B. Separate 100 MHz outputs are routed to the A6A9, AlOA4, and A7Al assemblies. A 400 MHz signal is applied to the A7A3 assembly. The A7Al assembly divides the 100 MHz input to provide 10 MHz and 20 MHz references. 100 MHz Oscillator @ The tune voltage at A7A2TPl is nominally -8 V. If an unlocked condition exists, this voltage is either -23 V or -1.3 V.
HP Part Number 85660-60135 A7A2 100 MHz VCXO Reference Designation HP Part C Number D Qty A7A2 85660-60135 A7A2Cl A7A2C2 A7A2C3 A7A2C4 A7A2C5 0121-0495 0121-0495 0121-0495 0121-0493 0180-0049 A7A2C6 A7A2C7 A7A2C8* A7A2C9 A7A2ClO 0 Mfr Code Description Mfr Part Number 1 BOARD ASSEMBLY, 100 MHZ VOLTAGECONTROLLED CRYSTAL OSCILLATOR (VCXO) 28480 85660-60135 5 5 5 3 9 1 1 1 1 1 CAPACITOR-V TRMR-AIR 1.9-15.7PF 175V CAPACITOR-V TRMR-AIR 1.9-15.7PF 175V CAPACITOR-V TRMR-AIR 1.9-15.
HP Part Number 85660-60135 A7A2 100 MHz VCXO - Reference DesignationI HP Part Number C c 3t: Mfr Code Description Mfr Part Number A7A2C48 A7A2C49 A7A2C50 A7A2C51 A7A2C52 (1160-3456 (1160-3456 ()180-0116 (1160-4299 (1160-3456 A7A2C53 A7A2C54 A7A2C55 A7A2C56 A7A2CRl t t f 1 1 1 1 1 CAPACITOR-FXD 1OOOPF +-lo% 1KVDC CER CAPACITOR-FXD 1OOOPF +-lo% 1KVDC CER CAPACITOR-FXD 6.
HP Part Number 85660-60135 A7A2 100 MHz VCXO - Reference Designation: HP Part Number Description at] Mfr Code Mfr Part Number AJA2QJ AJA2Q8 1854-0345 1854-0345 1 1 TRANSISTOR NPN 2N5179 SI TO-72 PO=200MW TRANSISTOR NPN 2N5179 SI TO-72 PO=200MW 04713 04713 2N5179 2N5179 AJA2Q9 AJA2QlO AJA2Qll AJA2Rl AJA2R2 1854-0345 1854-0404 1854-0345 0757-0279 0757-0419 I ( t ( ( 1 1 1 1 1 TRANSISTOR NPN 2N5179 SI TO-72 PD=200MW TRANSISTOR NPN SI TO-18 PD=360MW TRANSISTOR NPN 2N5179 SI TO-72 PD=EOOMW RESIS
HP Part Number 85660-60135 A7A2 100 MHz VCXO - Reference Designation HP Part Number C c Description ;It: Mfr Code Mfr Part Number AJA2R43 AJA2R44 AJA2R45 AJA2R46 AJA2R47 0698-3155 0698-0084 0698-0084 0757-0279 0757-0439 I E s ( 4 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 4.64K 2.15K 2.15K 3.16K 6.81K 1% .125W TF TC=O+-100 1% .125W TF TC=O+-100 1% .125W TF TC=O+-100 +-1% .125W TF TC=O+-100 +-I% .
/ 100 MHz OUT 400 MHz OUT A TUNE 1 16 -lOVF PI 2 15 30 i( +2ovF A7A2 100 MHz VCXO Component Locations, 85660-60135
A7A3 A7A3 M/N Phase Detector, Circuit Description The M/N phase detector has two programmable frequency dividers: an M divider and an N divider. M and N are integer numbers which give the ratio of divider input frequency to divider output frequency. This is the divide number. The input to the N divider is 20 MHz; the M divider input is the difference frequency between the M/N VCO (355 to 395 MHz) and 400 MHz. The two divider outputs are compared in a phase/frequency detector.
IF Amplifier @ The 60 MHz low-pass filter rejects unwanted mixing products from the mixer. Q4 and U18B amplify and limit the IF signal and give it the proper levels to run the following ECL circuitry. Phase/Frequency Detector @ The outputs of M and N dividers are compared in Ul. When they are in phase, the outputs of Ul are narrow, coincident pulses. For unlock conditions, the output pulses are of varying widths. Preamplifier @ Ql and Q2 are a low-noise differential pair preamplifier.
The second and third numbers are the M and N divide numbers respectively. The waveform at test points 3 and 7, 5 and 6, and 1 and 2 should be as shown in Figures 1, 2, and 3 respectively. The Center Frequencies for Figure la, lb, lc, and Id are 3.77 GHz, 3.96 GHz, 4.15 GHz, and 4.34 GHz respectively. The M and N numbers are 20, 21, 22, and 23 respectively. Oscilloscope control settings for Figure 1, Figure 2, and Figure 3 are: Vertical: 0.1 V/Div Horizontal: 0.
L E V E L S = E C L LOW=-1.7V D U T Y CYCLE<1/3 TP3 TP7 I I I I I T I I I I T I a. M o r N N u m b e r s 8,12,16,20, 24,28, o r 3 2 b . M o r N N u m b e r s 9,13,17,21, 25, or 29 D U T Y C Y C L E l/2 D U T Y CYCLE>2/3 111.. a. I TP3 II I II II II ++ II II II II I I II I I II II 1I f 1 I I II + I I II I I I TP7 I I I I I t I I I I c . M o r N N u m b e r s 10,14,18,22, 26, or 30 I I I I I d .
Figure 2. M and N Divider Waveforms for Test Points 5 and 6 Figure 3. M and N Divider Waveforms for Test Points 1 and 2 The output of the IF Amplifier at U18 Pin 3 is at ECL logic levels: -0.9 V = high, -1.7 V = low. Typical voltage levels for Q3 and Q4 are shown in Table 1. Table 1. IF Amplifier Voltage Levels Voltage Levels Q3 Q4 Emitter -5.6 -7.4 Base -4.8 -6.6 0 -1.
Phase Frequency Detector @ and Preamplifier @ The Phase/Frequency Detector outputs pulses whose width is proportional to the phase difference of the two input signals. These pulses are filtered by the combination of R24/C5 and R25/C6. The Preamplifier amplifies these pulses which are representative of the phase difference of the two input signals. Typical voltage levels for the Preamplifier are shown in Table 2. Table 2.
HP Part Number 85660-60136 A7A3 M/N Phase Detector HP Part Number C c A7A3 85660-60136 I 1 BOARD ASSEMBLY, M/N PHASE DETECTOR A7A3Cl A7A3C2 A7A3C3 A7A3C4 A7A3C5 0160-4299 0160-0574 0160-4299 0180-0100 0160-0572 I 1 1 1 1 1 CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD 2200PF +-20% 250VDC .022UF +-20% 1OOVOC 2200PF +-20% 250VDC 4.
HP Part Number 85660-60136 A7A3 M/N Phase Detector Reference Designation HP Part Number c 0 31 Mfr Description - A7A3Q3 A7A3Q4 A7A3Rl A7A3R2 .854-0345 .
HP Part Number 85660-60136 A7A3 M/N Phase Detector Reference Designation ~ HPPart ‘C’ Number D QtJ - A7A3UlO 1820-0820 A7A3Ull A7A3U12 A7A3U13 A7A3U14 A7A3U15 3 1 I I Description ~~~ I Mfr Code Mfr Part kl..-I.,... IC FF ECL J-BAR K-BAR COM CLOCK DUAL 04713 MC10135L 1810-0204 1820-0802 1810-0251 1820-1225 1810-0204 NETWORK-RES &SIP l.OK OHM X 7 IC GATE ECL NOR QUAD 2-INP NETWORK-RES lo-SIP MULTI-VALUE IC FF ECL D-M/S DUAL NETWORK-RES a-SIP l.
-0 idOU c w w >c/ 0) e ul
A7A4 A7A4 M/N Output, Circuit Description A7A4 amplifies the output of the A7A4Al M/N VCO in two different paths. One path is amplification and buffering to drive the mixer in the M/N phase-lock loop. The other path drives a divide by two which, after further amplification, goes to the AllA Sampler. The integrating loop amplifier which generates the tuning voltage for the M/N VCO is also included on A7A4.
Voltage-Controlled Oscillator 6~ The M/N voltage-controlled oscillator (VCO) consists of a resonator A7A4AlAl and Q2 with its associated circuitry. The oscillation frequency is determined by the bias on the varactors CR1 and CR2 which tunes the cavity resonator. Coarse tuning is provided by Cl, while C5 is used to vary the output coupling to the cavity thereby varying the output power.
Voltage-Controlled Oscillator (VCO) @j and Buffer Amplifier @ The VCO output frequency with the tuning voltage set to -14.2 V should be 380 MHz. Typical voltage levels for the VCO are as shown in Table 1. Table 1. Typical VCO Voltage Levels LO Output Amplifier @ Table 2. Typical LO Output Amplifier Voltage Levels A7A4A2 Voltage Levels Q5 Q2 Ql Emitter -6.9 -6.7 -6.7 Base -6.2 -6.2 -6.2 Collector -0.5 0.0 0.0 LO Amplifier @ and M/N Output Amplifier @ Table 3.
(2 PLACES) Ga (2 PLACES) (2 PLACES) PLACES) / A7A4A2 / A7A4A2Wl \ A7A4AlAl A7AiAlA2 \ a7a4’nr A7A4AlA2Wl Figure 1.
Item HP Part CD Number Description Mfr Code M f r Pari Number 1 86701-40001 9 EXTRACTOR, PC BOARD 28480 86701-4000 2 2200-0101 0 SCREW, MACH, 4-40, .188-IN LG, PAN HD 28480 86701-2004 3 86701-20049 3 SCREW, TUNING, FREQ ADJUST 28480 86701-2004 4 2950-0078 9 NUT, HEX, lo-32 (FOR FREQ ADJUST (3)) 28480 2950-0078 5 3050-0082 8 WASHER, FL NM, .116-IN ID (FOR (3)) 28480 3050-0082 6 2580-0002 4 NUT, HEX, 8-32 (FOR C23) 28480 2580-0002 7 2190-0009 4 WASHER, LOCK, .
HP Part Number 85660-60113 A7A4 M/N Output HP Part Number m - A7A4 35660-60113 1 M/N OUTPUT ASSEMBLY (SERIAL PREFIXES: 2410A - 2607A) 28480 85660-60113 A7A4Al 35660-60096 1 M/N VOLTAGE CONTROLLED OSCILLATOR ASSY (A COMPLETE PARTS LIST FOR THIS BOARD ASSY IS INCLUDED IN THIS SECTION) 28480 85660-60096 A7A4AlAl A7A4AlA2 35660-60112 ~5660-60018 1 1 M/N VOLTAGE CONTROLLED OSCILLATOR M/N VCO BOARD ASSEMBLY (A COMPLETE PARTS LIST FOR THIS BOARD ASSY IS INCLUDED IN THIS SECTION) 28480 28480 8566
HP Part Number 85660-60267 A7A4 M/N Output Reference Designation HP Part Number Description Mfr Code Mfr Part Number A7A4 35660-60267 M/N OUTPUT ASSEMBLY (SERIAL PREFIX: 2611~) 28480 85660-60267 A7A4Al 35660-60096 M/N VOLTAGE CONTROLLED OSCILLATOR ASSY (A COMPLETE PARTS LIST FOR THIS BOARD ASSY IS INCLUDED IN THIS SECTION) 28480 85660-60096 A7A4AlAl A7A4AlA2 35660-60112 35660-60018 M/N VOLTAGE CONTROLLED OSCILLATOR M/N VCO BOARD ASSEMBLY (A COMPLETE PARTS LIST FOR THIS BOARD ASSY IS INCLUDE
HP Part Number 85660-60096 A7A4Al VCO Assembly Reference Designation HP Part Number Description Mfr Code Mfr Part Number A7A4Al 35660-60096 M/N VOLTAGE CONTROLLED OSCILLATOR ASSEMBLY 28480 85660-60096 A7A4AlAl A7A4AlA2 35660-60112 35660-60018 M/N VOLTAGE CONTROLLED OSCILLATOR M/N VCO BOARD ASSEMBLY (A COMPLETE PARTS LIST FOR THIS BOARD ASSY IS INCLUDED IN THIS SECTION) 28480 28480 85660-60112 85660-60018 1380-0020 1520-0131 1520-0174 !190-0014 !260-0002 SPACER .250-IN-LG .
HP Part Number 85660-60018 A7A4AlA2 M/N VCO Board - HP Part Number C c A7A4AlA2 85660-60018 t 1 BOARD ASSEMBLY, M/N VCO 28480 85660-60018 A7A4AlA2Cl A7A4AlA2C2 A7A4AlA2C3 A7A4AlA2C4 A7A4AlA2CS 0160-3878 0160-3878 0160-3879 0160-3878 0180-1731 f t i t E 1 1 1 1 1 CAP-FXD 1OOOpF 100 V CAP-FXD 1OOOpF 100 V CAPACITOR-FXD .OlUF +-20% 1OOVDC CER CAP-FXO 1OOOpF 100 V CAPACITOR-FXD 4.
HP Part Number 85660-60192 ATA4A2 M/N Output Board HP Part Number :: 0 A7A4A2 85660-60192 9 1 BOARD ASSEMBLY, M/N OUTPUT (SERIAL PREFIXES: 2410A - 2449A) 28480 85660-60192 A7A4A2Cl A7A4A2C2 A7A4A2C3 A7A4A2C4 A7A4A2C5 0160-3878 0160-3878 0160-3874 0160-3878 0160-3878 E f CAP-FXD 1OOOpF 100 CAP-FXD 1OOOpF 100 CAPACITOR-FXD 1OPF CAP-FXD 1OOOpF 100 CAP-FXD 1OOOpF 100 04222 04222 2 E E 1 1 1 1 1 SR201C102MAAH SR201C102MAAH F012COG2DlOOD SR201C102MAAH SR201C102MAAH A7A4A2C6 A7A4A2C7 A7A4A2C8 A7A
HP Part Number 85660-60192 A7A4A2 M/N Output Board Reference Designation HP Part Number c c Mfr Code Mfr Part Number a! - Description 1 1 1 1 1 INDUCTOR RF-CH-MLD 91UH +-5% .166D-INX.3 INDUCTOR RF-CH-MLD 15UH +-lo% .166D-INX. INDUCTOR RF-CH-ML0 IOOUH +-5X .166D-INX. INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX. INDUCTOR RF-CH-MLD 5ONH +-lo% .105D-INX.
HP Part Number 85660-60192 A7A4A2 M/N Output Board Reference Designation HP Part C Number D Qty Description Mfr Code Mfr Part Number A7A4A2R20 A7A4A2R21 0698-7222 0698-7223 1 2 1 1 RESISTOR 261 1% .05W F TC=O+-100 RESISTOR 287 +-1% .05W TF TC=O+-100 24546 19701 C3-l/8-TO-261R-F 50635 A7A4A2R22 A7A4A2R23 A7A4A2R24 A7A4A2R25 A7A4A2R26 0698-7188 0698-7229 0698-7219 0698-7239 0698-7243 8 8 6 0 6 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 10 +-1% .05W TF TC=O+-100 511 +-1% .
HP Part Number 85660-60239 A7A4A2 M/N Output Board Reference Designation HP Part C Number D Qty Description Mfr Code Mfr Part Number A7A4A2 85660-60239 5 1 BOARD ASSEMBLY, M/N OUTPUT (SERIAL PREFIXES: 2503~ - 2607~) 28480 85660-60239 A7A4A2Cl A7A4A2C2 A7A4A2C3 A7A4A2C4 A7A4A2C5 0160-3878 0160-3878 0160-3874 0160-3878 0160-3878 6 6 2 6 6 1 1 1 1 1 CAP-FXD 1OOOpF 100 CAP-FXD 1OOOpF 100 CAPACITOR-FXD 1OPF CAP-FXD 1OOOpF 100 CAP-FXD IOOOpF 100 04222 04222 SR201C102MAAH SR201C102MAAH FD12COG2Dl
HP Part Number 85660-60239 A7A4A2 M/N Output Board - Reference Designation HP Part Number c c 2: Description Mfr Code Mfr Part Number A7A4A2L9 A7A4A2LlO A7A4A2Lll A7A4A2L12 A7A4A2L13 9140-0210 9100-2891 9100-2891 9135-0079 9135-0073 1 1 L c A7A4A2L14 A7A4A2MPl A7A4A2MP3 A7A4A2MP4 A7A4A2MP5 9140-0144 2190-0009 2190-0124 2200-0101 A7A4A2MP6 A7A4A2MP7 A7A4A2MP8 A7A4A2MPll A7A4A2MP12 2580-0002 2950-0078 3050-0082 85660-20049 85660-20068 A7A4A2MP13 A7A4A2MP14 A7A4A2MP15 A7A4A2MP16 A7A4A2MP17 : 1
HP Part Number 85660-60239 A7A4A2 M/N Output Board Reference Designation HP Part Number C 0 at] - Description Mfr Code Mfr Part Number A7A4A2R20 A7A4A2R21 3698-7223 3698-7223 2 2 1 1 RESISTOR 287 +-1% .05W TF TC=O+-100 RESISTOR 287 +-1% .05W TF TC=O+-100 19701 19701 50635 50635 A7A4A2R22 A7A4A2R23 A7A4A2R24 A7A4A2R25 A7A4A2R26 3698-7188 3698-7229 3698-7212 1698-7221 1698-7243 8 8 9 0 6 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 10 +-1% .05W TF TC=O+-100 511 +-1% .
HP Part Number 85660-60266 A7A4A2 M/N Output Board HP Part Number C c AJA4A2 85660-60266 E 1 BOARD ASSEMBLY, M/N OUTPUT (SERIAL PREFIX: 2611~) 28480 85660-60266 AJA4A2Cl AJA4A2C2 AJA4A2C3 AJA4A2C4 AJA4A2C5 0160-3878 0160-3878 0160-3674 0160-3878 0160-3878 E E 2 E E 1 1 1 1 1 CAP-FXD 1OOOpF 100 CAP-FXD 1OOOpF 100 CAPACITOR-FXD 1OPF CAP-FXD 1OOOpF 100 CAP-FXD IOOOpF 100 04222 04222 SR201C102MAAH SR201C102MAAH FD12COG2DlOOD SR201C102MAAH SR201C102MAAH AJA4A2C6 AJA4A2CJ AJA4A2Ca AJA4A2C9 AJA4A2
HP Part Number 85660-60266 A7A4A2 M/N Output Board Reference Designation HP Part Number C c a! - Description AJA4A2L2 AJA4A2L3 AJA4A2L4 AJA4A2L6 AJA4A2L 7 9100-2891 9135-0073 9100-2891 9100-1634 9100-1635 4 ? 4 1 2 1 1 1 1 1 INDUCTOR INDUCTOR INDUCTOR INDUCTOR INDUCTOR AJA4A2La AJA4A2L9 AJA4A2LlO AJA4A2Lll AJA4A2L12 9100-1620 9140-0210 9100-2891 9100-2891 9135-0079 5 1 4 4 9 1 1 1 1 1 AJA4A2L13 AJA4A2L14 AJA4A2L15 AJA4A2MPl AJA4A2MP3 9135-0073 9140-0144 9100-1641 3 0 0 1 1 1 2190-0009 4
HP Part Number 85660-60266 A7A4A2 M/N Output Board Reference Designation HP Part Number C 0 Description Qt! - Mfr Code Mfr Part Number AJA4A2RlO AJA4A2Rll 0698-7188 0698-7212 E 5 1 1 RESISTOR 10 +-1% .05W TF TC=O+-100 RESISTOR 100 +-1% .05W TF TC=O+-100 19701 19701 50635 50635 AJA4A2R12 AJA4A2Rl3 AJA4A2R14 AJA4A2R15 AJA4A2R16 0757-0394 0698-7212 0757-1094 0757-1094 0757-1094 C 9 9 9 9 1 1 1 1 1 RESISTOR 51.1 +-I% .125W TF TC=O+-100 RESISTOR 100 +-1% .05W TF TC=O+-100 RESISTOR 1.4JK +-1X .
TUNE T O TPI c-3) A7A4AlAlC5 PWR Jl A!AP4AA:TAZ%l) 355-395 MHz OUT A7A4AlA2 M/N VCO Board Component Locations, 85660-60018
II I Jl 355-395 OUT 16 MP18 MP14 (2 PLACES) Pl %,;N J3 355-395 IN MP17 MHZ MP19 (2 PLACES)(2 OUT MPl5 PLACES) Wl TUNE A7A4A2 M/N Output Board Component Locations, 85660-60192 MHZ
Jl 355-395 OUT 16 MP18 MP14 (2 PLACES) PI J2 M/N J3 355-395 IN 6 4' -1 MPl9 MHZ MP19 (2 PLACES) OUl MP15 (2 PLACES) c5F b TPl TUNE L A7A4A2 M/N Output Board Component Locations, 85660-60239 MHZ
Jl 355-395 OUT MP14 (2 PLACES) J3 355-395 IN MP17 MHZ I\ MP19 (2 PLACES)(2 MP15 PLACES) Wl C23 a TPl % TUNE A7A4A2 M/N Output Board Component Locations, 85660-60266 MHZ
HP Part Number 85660-60020 A7A5 Reference Motherboard Reference Designation HP Part C Number D Qty A7A5 85660-60020 A7A5Cl A7A5C2 A7A5C3 A7A5C4 A7A5C5 0160-2437 0160-2437 0160-2437 0160-2437 0160-2437 A7A5C6 A7A5C7 A7A5C6 A7A5C9 A7A5ClO 2 Mfr Code Description Mfr Part Number 1 REFERENCE MOTHERBOARD (SERIAL PREFIXES: Z~IOA-2607~) 28480 85660-60020 1 1 1 1 1 1 1 1 1 1 CAPACITOR-FDTHRU CAPACITOR-FDTHRU CAPACITOR-FDTHRU CAPACITOR-FDTHRU CAPACITOR-FDTHRU 5000PF 5000PF 5000PF 5000PF 5000PF +80
HP Part Number 85660-60265 A7A5 Reference Motherboard Mfr Code HP Part Number 2 3 A7A5 15660-60265 2 1 ?EFERENCE MOTHERBOARD (SERIAL PREFIXES: 2611~) A7A5Cl A7A5C2 A7A5C3 A7A5C4 A7A5C5 1160-2437 1160-2437 1160-2437 1160-2437 1160-2437 1 1 1 1 1 1 1 1 1 1 :APACITOR-FDTHRU :APACITOR-FDTHRU :APACITOR-FDTHRU :APACITOR-FDTHRU :APACITOR-FDTHRU 5000PF +BO -20% 5000PF +BO -20% 5000PF +BO -20% 5000PF +BO -20% 5000PF +BO -20% A7A5C6 A7A5C7 A7A5CB A7A5C9 A7A5ClO '160-2437 160-2437 1160-2437 1160-2437 11
M / N O;;‘,W[ - - - -- c9 c7 C6 C8 1 I Cl3 Cl4 XA7A5P 1 Cl c2 Cl0 Cl1 Cl2 Circuit Side Component Side XA7A4 M/N OUTPUT M / N 0’XA7A3 DET rc XA7A5P1 1 - - 1OOMHz V C X O A7A5 Reference Motherboard Component Locations, 85660-20020
M / N - 1 I----I ““,;‘,“A;[ - - - - C9 c15 C6 - c7 Ct3 Cl3 Cl4 100 MHz VCXO - Cl c2 - Cl0 Cl1 Cl2 Circuit Side Component Side XA7A4 M/N OUTPUT M / N 0XA7A3 DET >r XA7A5r 1 - - 1OOMHz V C X O - - - REF 0 D E T - A7A5 Reference Motherboard Component Locations, 85660-60265
A8/A9 A8 Rectifier, Circuit Description Power is supplied to the instrument through the A9 Power Line Module, which contains the line voltage selector, to the primary of transformer Tl. Three bridge rectifiers and one center-tapped secondary provide the rectified outputs. Diodes CR1 through CR4 form a bridge rectifier that provides approximately 55 V for the -40 V supply, part of the A18 Negative Regulator. CR5 through CR8 form a bridge rectifier that provides about 20 V for the -10 V supply and the -5.
RF Section Internal Fuse Replacement Note For location of hardware and cables referred to in this procedure, see Figure 1. d Warning 9 Remove ac line cord from both instruments before proceeding with this procedure. 1. Position instrument upside-down as shown in view A. 2. Remove feet @ from rear of RF Section by removing screws @ show in view A. 3. Remove bottom cover by loosening screw @ and pulling cover toward rear of instrument. 4. Location of fuses is shown in view B.
Transformer Replacement Note For location of hardware and cables referred to in the procedure, see Figure 2. 1. Remove ac line cords, IF-Display Section, and RF Section bottom cover, top cover, and right side cover. 2. Remove front panel. (See A5 Front Panel section for A5 Front Panel Removal procedure.) 3. Remove A6 RF Module. (See A6 section for A6 RF Module removal procedure.) 4. Remove seven screws Q). 5.
CLE I U I (2 PLACES) Figure 2.
Power Transistor Replacement (Rear RF Cover Removal) Note For location of hardware and cables referred to in this procedure, see Figure 3. With ac line cords and RF Section bottom cover removed, proceed as follows: 1. Loosen rear cover by removing five screws Q). 2. Power Transistors can now be easily replaced. VIEW A VIEW B Figure 3.
HP Part Number 85660-60196 A8 Rectifier Reference Designation HP Part Number c c A8 85660-60196 : 1 RECTIFIER BOARD ASSEMBLY ABC1 A8C2 A8C3 A8C4 A8C5 0160-2055 0160-2055 0160-2055 0160-4084 0180-0230 E c E E C 1 1 1 1 1 A8C6 A8C7 A8C8 A8C9 A8ClO 0180-3476 0180-0197 0160-4005 0160-4005 0160-4005 2 E ? 2 c A8Cll A8C12 A8C13 A8CRl A8CR2 0160-4005 0160-3638 0180-1731 1901-0662 1901-0662 A8CR3 A8CR4 A8CR5 A8CR6 A8CR7 Mfr Code Description B! - Mfr Part Number 28480 85660-60196 CAPACITOR-F
HP Part Number 85660-60196 A8 Rectifier Reference Designation HP Part Number c 0 Description 21 - Mfr Code Mfr Part Number A8MP14 A8MP15 1050-0876 1340-1077 E c 2 2 WASHER MICA .560 IN-ID INSULATOR HEATSINK 660 86928 5624-53-5 A8Rl A8R2 1698-0083 !lOO-3052 E 4 1 1 RESISTOR 1.96K 1% .
1 19 PI 18 36 A6 Rectifier Component Locations, 65660-60196
A10 AlOAlWl 2 AlOA8W2 AIOA ’ AlOA8Wl I \ \ \ I 1 / w5 W4 w7 (13 PLACES) (43 PLACES) Figure 1.
(2 PLACES) (43 PLACES) I I Figure 1.
Item HP Part Number CD Description Mfr Code 1 8566626052 6 COVER, PC BOARD (AlOAl PLLl VCO) 28480 85660-2005: 2 8566@20053 7 COVER, PC BOARD (AlOA2 PLLl DIVIDER) 28480 85660-2005: 3 8566CL20054 8 COVER, PC BOARD (AlOA3 PLLl IF) 28480 85660-20054 4 8566CL20055 9 COVER, PC BOARD (AlOA4 PLW UP CONVERTER) 28480 85660-2005: 5 85660-20056 0 COVER, PC BOARD (AlOA5 PLL2 VCO) 28480 85660-20056 6 85660-20057 1 COVER, PC BOARD (AlOA6 PLL2 ,#I DET) 28480 85660-20057 7 8566&20058 2
AIOAI AIOAI Phase Lock Loop 1 (PLLI) Voltage-Controlled Oscillator (VCO), Circuit Description AlOAl contains the loop amplifier and voltage-controlled oscillator (VCO) for the PLLl phase lock loop. The PLLl VCO tunes from 199.9 to 300 MHz (start frequencies of 200.000001 to 300.000000 MHz) for a range of about 4 V to 16 V tuning of the varactor. The PLLl VCO drives a counter which divides the frequency by 10. The counter output goes through a switch and a filter to the 20/30 output.
Output Switch @ The output switch is U2 which is a quad ECL NOR gate. For frequency spans greater than n x 100 kHz, but less than or equal to n x 5 MHz, the switch input to R3 is TTL low. U2B and U2C are on while U2D is off. For all other spans, the opposite states exist. This has the effect of switching either the output of U3 divider or Jl to the 20/30 loop output J2. Divide by IO @ Q3 is a common-emitter amplifier which drives U3 through a high-pass filter.
HP Part Number 85660-60131 AlOAl PLL 1 VCO HP Part Number C c AlOAl 85660-60131 f 1 BOARD ASSEMBLY, PLLl VCO 28480 85660-60131 AlOAlCl AlOAlC2 AlOAlC3 AlOAlC4 AlOAlCS 0160-0574 0160-0574 0160-3875 0160-0574 0160-3877 : 3 3 3 e 1 1 1 1 1 CAPACITOR-FXD .022UF +-20X 1OOVDC CER CAPACITOR-FXD .022UF +-20% 1OOVDC CER CAPACITOR-FXD 22PF +-5% LOOVDC CER 0+-30 CAPACITOR-FXD .
HP Part Number 85660-60131 AlOAl PLL 1 VCO Reference Designation HP Part Number Description - Mfr Code Mfr Part Number AlOAlL2 AlOAlL3 AlOAlL4 AlOAlL5 9100-2891 9100-2257 85660-80004 85660-80005 4 6 4 5 1 1 1 1 INDUCTOR INDUCTOR INDUCTOR INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX. RF-CH-MLD 820NH +-lo% .105D-INX 30NH 4NH 24226 32159 28480 28480 AlOAlL6 AlOAlL7 AlOAlL8 AlOAlL9 AlOAlLlO 9100-2258 85660-80008 85660-80008 9100-1647 9100-1788 7 a a 6 6 1 1 1 1 1 INDUCTOR RF-CH-MLD 1.2UH +-IO% .
HP Part Number 85660-60131 AlOAl PLL 1 VCO Reference Designation HP Part Number C II M Mfr Code Description Mfr Part Number AlOAlR15 0757-0402 1 1 RESISTOR 110 +-1% .125W TF TC=O+-100 19701 SFR25H AlOAlR16 AlOAlR17 AlOAlR18 AlOAlR19 AlOAlR20 0698-7195 0757-0280 0698-3155 0757-0428 0757-0395 7 3 1 1 1 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 19.6 +-1% .05W TF TC=O+-100 1K +-1% .125W TF TC=O+-100 4.64K 1% .125W TF TC=O+-100 1.62K +-1% .125W TF TC=O+-100 56.2 +-1% .
HP Part Number 85660-60131 AlOA1 PLL 1 VCO Reference Designatior HP Part Number at Description Mfr Code Mfr Part Number - AlOAlVRl AlOAlWl .902-3048 15660-60089 85660-60131 Parts List Page 4 of 4 1 1 DIODE-ZNR 3.48V 5% DO-35 PD=.
L J3 OUT 200-300 MHz J2 20-30 MHz Jl l-5 MHz SCAN IN \ VJ2 VJl -3 5 zul lrlQ0 u2 f11 : 1 r--J- 8 - ;g - -I titt 7J3 :$? @,;E u3 ;~‘:: rm- - mnr-rn m / .- % E g,“-B VdE a @ ;9 zn,z aJ 0 91 n tat---- r.m”-l*n *e-**f LLpL(L.
AlOA2 AlOA2 Phase Lock Loop 1 (PLLI) Divider, Circuit Description AlOA2 functions as a programmable frequency divider and a phase/frequency detector. The divider is programmed by the Al5 Controller to divide the input frequency by the PLLl divide number Nl down to 5 MHz. This is then compared with a 5 MHz reference in the phase/frequency detector. The detector output, after amplification and integration, tunes the frequency of the PLLl voltage-controlled oscillator (VCO).
However, the Fractional Divide circuit can set the integer divider to a “hold” state every N pulses, causing it to “swallow” a pulse and effectively divide by N+l for a cycle. In this example, the Fractional Divide circuit selectively causes the integer divider to “swallow” a pulse in 57 out of every 100 divide cycles. The integer divider thus divides by 8 for 43 out of every 100 cycles and by 9 for 57 out of every 100 cycles, averaging out to the desired value of 8.57.
HP Part Number 85660-60023 AlOA2 PLL 1 Divider HP Part Number C 0 w - AlOA2 E15660-60023 5 1 BOARD ASSEMBLY, PLL 1 DIVIDER AlOAZCl AlOA2C2 AlOA2C3 AlOA2C4 AlOA2C5 C1160-0574 C1160-0574 C1160-0574 C1160-0574 C1160-0574 3 3 3 3 3 1 1 1 1 1 CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD AlOA2C6 AlOA2C7 AlOA2C8 AlOA2C9 AlOALClO 01160-0574 01160-0570 01160-0570 01160-0574 01160-4084 3 9 9 3 8 AlOAZCll AlOA2C12 AlOA2C13 AlOAPCRl AlOA2CR2 01160-3875 01160-0574 01180-2207 Re
HP Part Number 85660-60023 AlOA2 PLL 1 Divider Reference Designation I HP Part Number Mfr Code Description ;)tl - Mfr Part Number AlOA2R13 AlOA2R14 AlOA2R15 AlOA2R16 I1757-0416 (1698-3440 (1757-0442 (1757-0280 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR 511 +-1% .125W TF TC=O+-100 196 1% .125W TF TC=O+-100 10K +-1% .125W TF TC=O+-100 1K +-1% .
HP Part Number 85660-60023 AlOA2 PLL 1 Divider Reference Designation HP Part Number m - Description Mfr Code Mfr Part Number AlOA2U12 1820-0821 1 IC CNTR ECL BIN UP/DOWN SYNCHRO POS-EDGE 04713 MC10136L AlOA2U13 AlOA2U14 AlOA2U15 AlOA2U16 AlOAPVRl 1810-0204 1820-0817 1820-0817 1820-0817 1902-3059 1 1 1 1 1 NETWORK-RES 8-SIP l.OK OHM X 7 IC FF ECL O-M/S DUAL IC FF ECL O-M/S DUAL IC FF ECL O-M/S DUAL DIODE-ZNR 3.83V 5% DO-35 PO=.
9 2 11 F /--A3 Yc* ~H~~O~noolmJ3OOO~~ au@ 1 19 Pl 18 36 \ 14 i AlOA2 PLLl Divider Component Locations, 85660-60023 10 b
AlOA3 AlOA3 Phase Lock Loop 1 (PLLI) IF, Circuit Description AlOA3 functions to mix the output of A10A4 (160.15 to 166 MHz) with the LO output from AlOAl (200 to 300 MHz). T he output of this assembly is the difference frequency suitably filtered and amplified to about -10 dBm. LO Amplifier @ The LO amplifier consists of common-emitter amplifiers Ql and Q2. CR1 and CR2 provide limiting to prevent overdriving Q2 near 200 MHz where Ql has more gain.
HP Part Number 85660-60024 AlOA3 PLL 1 IF Reference Designation n HP Part Number C D Qty Description Mfr Code Mfr Part Number AlOA3 85660-60024 6 1 BOARD ASSEMBLY, PLL 1 IF 28480 85660-60024 AlOA3Cl AlOA3C2 AlOA3C3 AlOA3C4 AlOA3C5 0160-3878 0160-0574 0160-3878 0160-3878 0160-0574 6 3 6 6 3 1 1 1 1 1 CAP-FXD 1OOOpF 100 V CAPACITOR-FXD .022UF +-20% 1OOVDC CER CAP-FXD 1OOOpF 100 V CAP-FXD 1OOOpF 100 V CAPACITOR-FXD .
HP Part Number 85660-60024 AlOA3 PLL 1 IF Reference Designation HP Part Number AlOA3L12 AlOA3L13 AlOA3L14 AlOA3L15 85660-80009 85660-80006 9100-2251 9100-2247 AlOA3L16 AlOA3L17 AlOA3LlB AlOA3L19 AlOA3L20 9100-2247 9100-2248 9100-2256 9100-2256 9100-2891 AlOA3L21 AlOA3MPl AlOA3MP3 AlOA3MP4 AlOA3MP5 Mfr Code Description Mfr Part Number 1 1 1 1 INDUCTOR 1OONH INDUCTOR 120NH INDUCTOR RF-CH-MLD 220NH +-lo% .1050-INX INDUCTOR RF-CH-MLD 1OONH +-lo% .
HP Part Number 85660-60024 AlOA3 PLL 1 IF Reference Designation HP Part Number w - Description Mfr Code Mfr Part Number AlOA3R25 1757-0280 1 RESISTOR 1K +-1% .125W TF TC=O+-100 19701 SFR25H AlOA3R26 AlOA3R27 AlOAJLJl AlOA3Wl AlOA3W2 )757-0280 1698-3440 1955-0063 i5660-60092 15660-6009 1 1 1 1 1 RESISTOR 1K +-1% .125W TF TC=O+-100 RESISTOR 196 1% .
J2 Jl IN IN ZOO-300 MHz 160-166 MHz m R2 R3 Ic2 35 I @ c3R4 I CR2 CR1 ;I RS %z R7 j?I7 @ G” ” 1 piTJ= 8 5 ’ 00 EkeI “E: G, Ii, LJ Q 63 m ZN (L(L ;$I In2; .& ‘” 1 w 0: Y? ‘1 1 16 t L8 ll Ic271 L I Z ; 0 1 m Lll t&;; I, cml a4 I,pm ; ‘ I 0 IL.
AlOA4 AlOA4 Phase Lock Loop 3 (PLL3) Up Converter, Circuit Description The function of AlOA4 is to mix 160 MHz with the output of AlOA5 (.15 to 6 MHz), up-converting that output by 160 MHz. The two frequencies are mixed together in a phase lock loop which has a closed loop bandwidth of approximately 10 kHz. Frequency Multiplier x 1.6 @ The frequency multiplier generates 160 MHz from the 100 MHz at the input. U3 divides the input by 5 and produces harmonics of the resulting 20 MHz.
Phase/Frequency Detector @ U6B and U6C are ECL buffer amplifiers which have the proper output amplitude and dc level (approximately +3 V low and +4 V high) to drive the phase/frequency detector. When the phase detector inputs have the same phase, the outputs are ECL high with narrow negative coincident pulses. If there is a phase offset, the pulse widens on one of the outputs depending on which signal is leading in phase.
HP Part Number 85660-60025 Al OA4 PLL 3 Up Converter Reference Designation HP Part Number Mfr Code Description %Y - AlOA4 85660-60025 7 1 BOARD ASSEMBLY, PLL 3 UP CONVERTER AlOA4Cl AlOA4C2 AlOA4C3 AlOA4C4 AlOA4C5 0160-0574 0160-0572 0160-0572 0160-0574 0160-4084 3 1 1 3 a 1 1 1 1 1 CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAP-FXD O.
HP Part Number 85660-60025 AloA4 PLL 3 Up Converter - Reference Designation HP Part Number Mfr Part Number Mfr Code Description CAPACITOR-FXD 4.7PF +-.5PF 200VDC CER CAPACITOR-FXD 22PF +-5X EOOVDC CER 0+-3C CAP-FXD 15pF 200 V CAPACITOR-V TRMR-AIR 1.3-5.4PF 175V 74970 FD12COG2D4R7D FD12COG2D220J RPE121-105COG150J200V 187-0103-028 1 1 1 1 1 DIODE-SWITCHING 80V DIODE-SWITCHING 80V DIODE-VVC 2.
HP Part Number 85660-60025 AlOA4 PLL 3 Up Converter Reference Designation HP Part Number JI - Mfr Code Description Mfr Part Number AlOA4Q5 1855-0327 B 1 TRANSISTOR J-FET 2N4416 N-CHAN D-MODE 34677 AlOA4Rl AlOA4R2 AlOA4R3 AlOA4R4 AlOA4R5 0698-3440 0757-0394 0698-0083 0757-0418 0757-0280 7 0 8 9 3 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 196 1% .125W TF TC=O+-100 51.1 +-1X .125W TF TC=O+-100 1.96K 1% .125W TF TC=O+-100 619 +-1% .125W TF TC=D+-100 1K +-1% .
HP Part Number 85660-60025 AlOA4 PLL 3 Up Converter Reference Designation HP Part Number AlOA4R47 AlOA4R48 AlOA4R49 AlOA4TPl D698-7200 0698-7218 D698-7207 1251-0600 AlOA4TP2 AlOA4TP3 AlOA4Ul AlOA4U2 AlOA4U3 1251-0600 1251-0600 5081-8117 1826-1058 1820-1383 AlOA4U4 AlOA4U5 AlOA4U6 AlOA4U7 AlOA4Wl 1810-0205 1820-0817 1820-0802 1955-0063 35660-60093 31 1 1 1 1 RESISTOR 31.6 +-1% .05W TF TC=O+-100 RESISTOR 178 +-1% .05W TF TC=O+-100 RESISTOR 61.9 +-1% .05W TF TC=O+-100 CONNECTOR-SGL CONT PIN 1.
/f r-&y I II u \ - \Z KS ?J IN
AlOA5 AlOA5 Phase Lock Loop 2 (PLL2) Voltage Controlled Oscillator (VCO), Circuit Description 75 to 150 MHz VCO @ The VCO is a varactor tuned oscillator which tunes 75 to 150 MHz. CR3, and CR4 form a series-tuned resonant circuit with L4 and L5. connects the emitters of Ql and Q2. Q2 is a common-base amplifier made up primarily of L9, R14, and R15. The voltage across the load emitter-follower Ql, which drives the series resonant circuit.
0.1 to 5 MHz Span Switch @ For frequency spans of greater than n x 100 kHz up to n x 5 MHz, SW1 is TTL low, routing the 15 to 30 MHz signal from U3 through U6D, U7D, and Tl to the AlOAl PLLl VCO. When SW1 is high, the circuit provides 90 dB of isolation. R35 and R36 shift the TTL levels to ECL levels.
HP Part Number 85660-60168 Al OA5 PLL 2 VCO Reference Designatior HP Part Number t Qt Description AlOA5 85660-60168 AlOA5Cl AlOA5C2 AlOA5C3 AlOA5C4 AlOA5C5 0160-0300 0160-0155 0160-0154 0160-3879 0160-4084 AlOASC6 AlOA5C7 Al OA5C8 AlOA5C9 AlOA5ClO 0160-3879 0160-3879 0160-3878 0160-4084 0160-3878 AlOA5Cll AlOASC12 AlOA5C13 AlOA5C14 AlOA5C15 , Mfr Code Mfr Part Number 1 BOARD ASSEMBLY. PLL2 VCD 2848C 85660-60168 1 1 1 1 1 CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAP-FXD O.
HP Part Number 85660-60168 AlOA5 PLL 2 VCO - Reference Designation HP Part Number C D Mfr Part Number Mfr Code Description at] - AlOA5Ll AlOA5L2 AlOA5L3 AlOA5L4 85660-80031 85660-80031 9140-0144 9100-3358 7 7 a a 1 1 1 1 I NOUCTOR INDUCTOR INDUCTOR RF-CH-MLD 4.7UH +-lo% .105DINDUCTOR RF-CH-MLD 162NH +-5% .
HP Part Number 85660-60168 AlOA5 PLL 2 VCO Reference Designation HP Part Number f ai I Mfr Code Description Mfr Part Number AlOA5R14 0757-0398 1 RESISTOR 75 +-1% .125W TF TC=O+-100 19701 SFR25H AlOA5R15 AlOA5R16 AlOA5R17 AlOA5R18 AlOA5R19 0757-0398 0757-0418 0757-0346 0757-0419 0757-0346 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 75 +-I% .125W 619 +-1% .125W 10 +-1% .125W 681 +-1% .125W 10 +-1% .
P ;5 % 0, - 0 ;I! K s 0 2 2 2 2 ;: % =f. 0 Iz z z ? zi s W -I< ;a u LO tf gk.
AIOAG AlOA6 Phase Lock Loop 2 (PLL2) Phase Detector, Circuit Description The purpose of the AlOA6 PLL2 Phase Detector is to compare the output of the AlOA5 PLL2 VCO (after division by the AlOA7 PLL2 Divider) to the 500 kHz Reference from the A7Al Reference Phase Detector. The phase difference is converted to an error voltage used to correct the PLL2 VCO frequency.
Analog Integrator-Sample and Hold @ U2 and C7 form an integrator which integrates current flowing from U3 through R8. The output of the integrator is summed with other signals in U4 and ultimately controls the VCO frequency. In steady state conditions, TP3 will settle to a constant voltage which tunes the VCO to the correct frequency. If the voltage at TP3 is constant, the input current must be zero, so opening FET switch Q3 will not change the voltage at TP3.
HP Part Number 85660-60130 AlOA6 PLL 2 Phase Detector Reference Designation HP Part C Number D Qty Description Mfr Code Mfr Part Number AlOA6 85660-60130 5 1 BOARD ASSEMBLY, PHASE LOCK LOOP 2 (PLL2) PHASE DETECTOR (SERIAL PREFIX: 2410~) 28480 85660-60130 AlOAGCl AlOA6C2 AlOA6C3 AlOA6C4 AlOA6C5 0180-0197 0160-0574 0160-3879 0160-4892 0160-4892 B 3 7 6 6 1 1 1 1 1 CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD 56289 28480 28480 28480 28480 150D225X9020A2 0160-0574 0160
HP Part Number 85660-60130 AlOA6 PLL 2 Phase Detector Reference Designatior 1 HP Part Number 31 Mfr Code Description Mfr Part Number AlOA6Q8 AlOA6Q9 AlOA6QlO AlOAGRl AlOA6R2 1854-0404 1853-0007 1853-0007 0757-0280 0757-0317 1 1 1 1 1 TRANSISTOR NPN SI TO-18 PD=360MW TRANSISTOR PNP 2N3251 SI TO-18 PD=360MW TRANSISTOR PNP 2N3251 SI TO-18 PD=360MW RESISTOR 1K +-1% .125W TF TC=O+-100 RESISTOR 1.33K +-1% .
HP Part Number 85660-60130 AlOA6 PLL 2 Phase Detector Reference Designation HP Part Number 31 - Description Mfr Code Mfr Part Number AlOA6U5 AlOA6U6 1820-0429 1820-1212 8 9 1 1 IC V RGLTR-FXD-POS 4.8/5.
HP Part Number 85660-60229 AlOA6 PLL 2 Phase Detector Reference Designatior HP Part Number C c l- Description at Mfr Code Mfr Part Number - AlOA6 85660-60229 AlOAGCl AlOA6C2 AlOA6C3 AlOA6C4 AlOA6C5 0180-0197 0160-0574 0160-4832 0160-4892 0160-4892 AlOA6C6 AlOA6C7 AlOA6C8 AlOA6C9 AlOAGClO 1 BOARD ASSEMBLY, PHASE LOCK LOOP 2 (PLLZ) PHASE DETECTOR (SERIAL PREFIXES: 2416A-2504A) 28480 85660-60229 I : 1 t f 1 1 1 1 1 CAPACITOR-FXD 2.2UF+-10% LOVDC TA CAPACITOR-FXD .
HP Part Number 85660-60229 AlOA6 PLL 2 Phase Detector Reference Designation HP Part Number AlOA6Q8 AlOA6Q9 AlOA6QlO AlOAGRl Al OA6R2 1854-0404 1853-0007 1853-0007 0757-0280 0757-0317 Al OA6R3 AlOA6R4 AlOA6R5 AlOA6R6 AlOA6R7 C c w - ( 7 i Mfr Code Description Mfr Part Number ; 1 1 1 1 1 TRANSISTOR NPN SI TO-18 PO=360MW TRANSISTOR PNP 2N3251 SI TO-18 PO=360MW TRANSISTOR PNP 2N3251 SI TO-18 PO=360MW RESISTOR 1K +-1% .125W TF TC=O+-100 RESISTOR 1.33K +-1% .
HP Part Number 85660-60229 AlOA6 PLL 2 Phase Detector Reference Designation HP Part C Number D Qty Description Mfr Code Mfr Part Number AlOA6U4 AlOA6U5 AlOA6U6 1826-0059 1820-0429 1820-1212 2 8 9 1 1 1 IC OP AMP GP TO-99 PKG IC V RGLTR-FXO-POS 4.8/5.
HP Part Number 85660-60254 AlOA6 PLL 2 Phase Detector Reference Designatior 1 HP Part Number at AlOA6 t35660-60254 1 BOARD ASSEMBLY, PHASE LOCK LOOP 2 (PLLZ, PHASE DETECTOR (SERIAL PREFIXES: 2511A-2613A) 2848t 85660-60254 AlOAGCl AlOA6C2 AlOA6C3 AlOA6C4 AlOA6C5 (1180-0197 c1160-0574 c1160-4832 C1160-4892 C1160-4892 , 1 1 1 1 1 CAPACITOR-FXO 2.2UF+-10% 20VOC TA CAPACITOR-FXO .022UF +-20% 1OOVOC CER CAPACITOR-FXO .
HP Part Number 85660-60254 AlOA6 PLL 2 Phase Detector Reference Designatior HP Part Number : t M Description Mfr Code Mfr Part Number AlOA6Q7 1853-0281 t 1 TRANSISTOR PNP 2N2907A SI TO-18 PO=400M\I 04713 2N2907A Al OA6Q8 AlOA6Q9 AlOAGQlO AlOAGRl AlOA6R2 1854-0404 1853-0007 1853-0007 0757-0280 0757-0317 I 1 : ; 1 1 1 1 1 TRANSISTOR NPN SI TO-18 PO=360MW TRANSISTOR PNP 2N3251 SI TO-18 PO=360MW TRANSISTOR PNP 2N3251 SI TO-18 PO=360MW RESISTOR 1K +-1% .125W TF TC=O+-100 RESISTOR 1.33K +-1% .
HP Part Number 85660-60254 AlOA6 PLL 2 Phase Detector Reference Designation HP Part Number c c Description 3tl - Mfr Code Mfr Part Number AlOA6U3 AlOA6U4 AlOA6U5 AlOA6U6 1826-0059 1826-0059 1820-0429 1820-1212 i i t E 1 1 1 1 IC IC IC IC OP AMP GP TO-99 PKG OP AMP GP TO-99 PKG V RGLTR-FXO-POS 4.8/5.2V TO-39 PKG FF TTL LS J-K NEG-EDGE-TRIG PRESET/CL 27014 27014 27014 01295 LMEOlAH LMZOlAH LM309H SN74LS112AN AlOA6U7 AlOA6U8 AlOA6U9 AlOAGUlO AlOA6VR2 .B20-1425 .820-1194 .820-1194 .826-0448 .
HP Part Number 85660-60276 AlOA6 PLL 2 Phase Detector HP Pati Number at] - AlOA6 85660-60276 1 BOARD ASSEMBLY, PLLL PHASE DETECTOR (SERIAL PREFIX: 2618~) 2848C 85660-60276 AlOAGCl AlOA6C2 AlOA6C3 AlOA6C4 AlOA6C5 0180-0197 0160-0574 0160-4832 0160-4892 0160-4892 1 1 1 1 1 CAPACITOR-FXO 2.2UF+-10% ZOVOC TA CAPACITOR-FXO .022UF +-20% 1OOVOC CER CAPACITOR-FXO .
HP Part Number 85660-60276 AlOA6 PLL 2 Phase Detector Reference Designatior HP Part Number AlOA6Q7 AlOA6Q8 AlOA6Q9 AlOA6QlO AlOAGQll 1853-0281 1854-0404 1853-0007 1853-0007 1853-0281 AlOAGRl AlOA6R2 AlOA6R3 AlOA6R4 AlOA6R5 0757-0280 0757-0317 0757-0280 0757-0317 0698-0083 AlOA6R6 AlOA6R7 AlOA6R8 AlOA6R9 AlOAGRlO 0698-3440 0757-0123 0698-0082 0757-0442 0698-3260 AlOAGRll AlOA6R12 AlOA6R13 AlOA6R14 AlOA6R15 0757-0290 0757-0420 0698-0084 0757-0280 0757-0442 AlOA6R16 AlOA6R17 AlOA6R18 AlOA6R19 AlOA6R2
HP Part Number 85660-60276 AlOA6 PLL 2 Phase Detector Reference Designation HP Part Number Description 31 - Mfr Code Mfr Part Number AlOA6U3 AlOA6U4 1826-0059 1826-0059 2 2 1 1 IC OP AMP GP TO-99 PKG IC OP AMP GP TO-99 PKG 27014 27014 LM201AH LMLOIAH AlOA6U5 AlOA6U6 AlOA6U7 AlOA6U8 AlOA6U9 1820-0429 1820-1212 1820-1425 1820-1194 1820-1194 8 9 6 6 6 1 1 1 1 1 IC IC IC IC IC V RGLTR-FXD-POS 4.8/5.
HULZ fl D E T O U T c3 u 4 “7 rm 4 @@iQ Q,J; m,&,mig@ “6 1 :I UE 5 ::i@~[ u9 g I IL3 I I;:L UIO : I nLr Ic8m + + r.
HULZ g D E T O U T Ic9 m u 4 0 77 U6 lli r:I U7 U6 u9 Ic8 c: LL n UIO :: a 1 0 m Cl6 Cl8 c20 E 16 l + r.
HULZ $8 D E T O U T 4 Jk 5 jc, [-I-j[ @$Yj TP5 + + zU”cc -:, Cl6clc20* pT--IL2 q (L3 I )ooonnnnnnonnnnn~ n e 1 16 2: (J!j 0 PI - 2n (,,1,] hq 0;;z++) +- 15 30 AlOA8 PLL2 Phase Detector Component Locations, 85660-60276
AlOA7 AlOA7 Phase Lock Loop 2 (PLL2) Divider, Circuit Description Reference Divider @ A 10 MHz signal derived from the quartz crystal reference is amplified by Q2 and used to drive divider U4. The divide by 10 output of U4 drives U16, whose divide by 2 output goes to the AlOA6 PLL2 Phase Detector. This 500 kHz signal is used as a reference to which the programmable divide output of the PLL2 Divider is compared. The TTL input on Pl-2 disables the reference divider during sweeps.
Synchronizer 0 Other divide numbers are provided through the pulse swallowing technique. The output frequency is held by the lock loop to 500 kHz. If N input pulses per second are swallowed, the input frequency must rise by N Hz to keep the output constant. If N input pulses are swallowed for each output pulse, input frequency must rise by N x 500 kHz.
HP Part Number 85660-60028 AlOA7 PLL 2 Divider HP Part Number c c AlOA7 I35660-60028 ( 1 BOARD ASSEMBLY, PLL 2 DIVIDER 28480 85660-60028 AlOA7Cl AlOA7C2 AlOA7C3 AlOA7C4 AlOA7C5 (1160-3877 (1160-3879 (1160-4084 (1160-3877 (1160-4084 t i E c i 1 1 1 1 1 CAPACITOR-FXD CAPACITOR-FXD CAP-FXD O.luF CAPACITOR-FXD CAP-FXD O.luF 1OOPF +-20% 200VDC CER .
HP Part Number 85660-60028 AlOA7 PLL 2 Divider Reference Designation HP Part C Number D Qty AlOA7R12 AlOA7R13 AlOA7R14 AlOA7TPl 0757-0280 0757-0280 0757-0442 1251-0600 3 3 9 0 1 1 1 1 RESISTOR 1K +-1% .125W TF TC=O+-100 RESISTOR IK +-1% .125W TF TC=O+-100 RESISTOR 10K +-1% .125W TF TC=O+-100 CONNECTOR-SGL CONT PIN 1.
Jl 75150 MHz J2 10 MHz ( d me ; &L z 3 r-4 3 a,’ r 0 3 * A 0 tn ; 0 + + z -=I y 0 ; % ul 3 AlOA7 PLL2 Divider Component Locations, 85660-60028
AlOA8 AlOA8 Phase Lock Loop 2 (PLL2) Discriminator, Circuit Description The AlOA8 PLL2 Discriminator combines the error voltage information from the AlOA6 PLL2 Phase Detector, the attenuated scan information (SCAN DAC IN) from the Al6 Scan Generator, and the tuning information from the Al2 Front-Panel Interface (via the Instrument Bus) to produce a tuning current to tune the oscillator in the AlOA5 PLL2 VCO. Pulse Generator @ AlOA5 PLL2 VCO provides an ECL level .15 to .
Summing Amplifier @ U3 is a noninverting integrator which responds to the voltage at the loop summing point, the junction of C22 and R43. The output of U3 is connected through R45 to the output summing network, whose output tunes the AlOA5 PLL2 VCO. Non-zero voltages at the loop summing point will therefore cause the VCO frequency to change, until the current from the discriminator reaches a level which cancels the other input, returning the summing point voltage to zero.
HP Part Number 85660-60176 AlOA8 PLL 2 Discriminator Reference Designation HP Part C Number D Qty Description Mfr Code Mfr Part Number AlOAt? 85660-60176 9 1 BOARD ASSEMBLY, PLL2 DISCRIMINATOR 28480 85660-60176 AlOA8Cl AlOA8C2 AlOA8C3 AlOA8C4 Al OA8C5 0160-4084 0160-4084 0160-4084 0180-0291 0180-0197 8 8 8 3 8 1 1 1 1 1 CAP-FXD O.luF 50 V CAP-FXD O.luF 50 V CAP-FXD O.luF 50 V CAPACITOR-FXD lUF+-10% 35VDC TA CAPACITOR-FXD 2.
AlOA8 PLL 2 Discriminator Reference Designatior 1 HP Part Number Description Mfr Code 1 1 1 1 SCREW-MACH 4-40 .188-IN-LG UNCT 82 DEG NUT-HEX-DEL-CHAM 8-32-THD .085-IN-THK NUT-HEX-DBL-CHAM lo-32-THD .067-IN-THK WASHER-FL NM NO. 8 .188-IN-ID .375-IN-OL 7725C 8012C 74163 73734 1 1 1 1 1 WASHER-SHLDR NO. 10 .194-IN-ID PLUG HOLE .187D WIRE 22AWG 1X22 COVER PC PLLE DISCRIMINATOR EXTRACTOR PC 0654C 2848G 92194 28480 28480 2636-24827-PH194 6960-0059 298 85660-20059 86701-40001 WASHER-LK INTL T NO. 10 .
HP Part Number 85660-60176 AlOA8 PLL 2 Discriminator Reference Designation HP Part Number C c a! Description : 1 RESISTOR-TRMR 20K 10% WU SIDE-ADJ PO-TRN 32991 3005P-DM3-203 E 1 1 1 1 1 RESISTOR 390K +-0.1X .125W TF TC=O+-10 RESISTOR-TRMR 2K 10% WW SIDE-ADJ 20-TRN RESISTOR 39K +-0.1% .125W TF TC=O+-10 RESISTOR 40.2K 1% .125W TF TC=O+-100 RESISTOR 40.2K 1% .
HP Part Number 85660-60176 AlOA8 PLL 2 Discriminator - Reference Designation HP Part Number w Description Mfr Code Mfr Part Number AlOA8U13 AlOA8VRl AlOA8Wl L820-0223 L902-0686 15660-60086 1 1 1 IC OP AMP GP TO-99 PKG DIODE-ZNR 6.2V 2% DO-7 PD=.4W TC=+.
5 R27 MHz R25 .5 MHz Jl J2 S C A N VCO T U N E R41 vco TUNE Rg J3 15-.
All YTO Loop and AllA YTO Replacement Note For location of hardware and cables referred to in this procedure, see Figure 1. With the ac line cords and RF Section bottom cover removed, proceed as follows: 1. Disconnect connector @ from AllAl (Coupler/Isolator/Amplifier) 0. Refer to view A. 2. Remove the following cables from All YTO Loop. Refer to view A. 8 (gray) (AllJl, DET OUT) @ 5 (green) (AllJ3, 20/30 IN) @ 93 (white/orange) (AllJ2, M/N IN) 0 0 (black) (AllJ4, IF IN) @ 3.
REAR VIEW A VIEW B Figure 1.
A23W3 CONNECTS HERE \ A l IA2 - INTERCONNECT w9 /CONNECTS HERE a -49 -@ A l lA2W3 CIA WI 1 - CONNECTS HERE - ln \ A l lA2W4 A l lW4 A l IWl ATTENUATOR/LPF fC,ARl F ASSFLARI VI Figure 2.
Q 12 A l IA5 (Ins,ide) Al IA4 (Inside) A l lA2 INTERCONNECT ’ Y/ A l 1Ul Al IA7 A l IWl A l lA3 YTO- L I 1 Figure 2.
A l lA2 INTERCONNECT A l lA2Wl Al lA3W3 A l 1Al ,-Y * Figure 2.
Item HP Part Number CD Description 1 2360-0331 6 SCREW, MACH, 632, .25-IN LG, PAN HD 28480 2 8566C~OOO24 0 DECK, YTO LOOP ASSEMBLY 28480 85660-0002~ 3 2200-0103 2 SCREW, MACH, 4-40, .25-IN LG, PAN HD 28480 85660-2010( 4 85660-20100 5 EXTRACTOR, YTO LOOP ASSEMBLY 28480 2360-0333 5 2360-0333 8 SCREW, MACH, 632, .25-IN LG, FLAT HD 28480 2360-0333 6 0520-0127 6 SCREW, MACH, 2-56, .
Reference Designatol HP Part Number - - CD 3tY RF Section Assemblies Description Mfr Code a Mfr Part Number - - AllAl 50867295 6 1 COUPLER/ISOLATOR/AMPLIFIER AllA 8566&6012: 6 1 BOARD ASSEMBLY, INTERCONNECT, YTO LOOP (MUST BE USED WITH AllA 50867314) 2848( I 85660-6012: AllA 50867314 0 1 YIG-TUNED OSCILLATOR (YTO) (NEW) 2848C 1 50867314 AllA 50866314 8 1 YIG-TUNED OSCILLATOR (YTO) 2848C 1 50866314 AllA 85660-60175 8 1 BOARD ASSEMBLY, YIG-TUNED OSCILLATOR (YTO) DETECTOR
HP Part Number 85660-60123 Al lA2 YTO Loop Interconnect Reference Designation HP Part C Number D QtY AllA 85660-60123 6 1 AllA2Cl AllA2C2 AllALL AllA2Rl Al lA2R2 0180-0374 0160-3879 9100-2262 0757-0280 2100-1775 3 7 3 3 4 AllA2Wl AllA2W2 AllA2W3 AllA2W4 8120-2801 8120-2803 85660-60108 85660-60109 7 9 7 8 Description Mfr Code Mfr Part Number BOARD ASSEMBLY. YTO LOOP INTERCONNECT 28480 85660-60123 1 1 1 1 1 CAPACITOR-FXD lOUF+-10% ZOVDC TA CAPACITOR-FXD .
R2 GATE BIAS ADJ w4 c (c1 0 0 0 o” - - - Wl I - I - l 1 I L I 0 1 EI Cl w2 + AllA YTO Loop Interconnect Component Locations, 85660-60123
-m--m--- RF SECTION N O T E S : 1. R E F E R E N C E DESlCNATORS WlTHlN THIS ASSEMBLY A R E A B B R E V I A T E D . F O R C O M P L E T E R E F E R E N C E DES,& NATION,PREFIX A B B R E V I A T I O N W I T H ASSEMBLY DESIGNATION. INTERCONNECT 2 . UNLESS O T H E R W I S E INDICATED: R I BBON CABLE T O A23JZ I GND ^ 2 19 I -40” (COIL-) ^ 8 _ 13 COIL+ +5.
Al IA4 Al lA4 YIG-Tuned Oscillator (YTO) Phase Detector, Circuit Description The AllA YTO Phase Detector compares the frequency and phase of the AllA Sampler IF signal to the output of the A10 20/30 Synthesizer Loop. The resultant error signal is integrated, amplified, and applied to the A21 FM Coil Driver where it is routed to either the main coil (dc path) or FM coil (ac path) of the AllA YTO. This tunes the YTO frequency the proper amount in the proper direction to maintain phase lock.
Loop Gain Switch (ij In frequency spans less than 25 kHz (N = l), Loop G ain Switch @ is enabled. The enable signal HYGH (High = YTO Gain High) is from the Al2 Front-Panel Interface and is high whenever a frequency span of less than 25 kHz is selected. This high turns on Q2 which turns on Q3 which causes Ql to saturate. Ql then effectively becomes a short, placing R14 between the emitters of Q4A and Q4B. This lowers the emitter resistance by a factor of four, increasing the gain by approximately 12 dB.
Unlock Detector @ Phase lock is obtained by use of the YTO (FM coil for ac corrections and main coil dc corrections) which has a frequency tuning range of approximately f20 MHz at 3 MHz/V sensitivity. Unlock detector U2 and associated circuitry is used to determine when the error voltage is too large for the YTO Loop to respond. This detection is performed for both positive and negative error voltages by U2A and U2B respectively. If the error voltage (ramp output of Integrator #2) exceeds f6.
A l lA2 INTERCONNECT \ (12 P l a c e s ) A l lA2Wl \ A l lA2W2 \- Al IA1 CIA / /-- x -==g== x UT - 04 Al IA3 YTO A l IWl Al IA7 A l lC9 Al lC3 A l lC8 Al ICI Al IA1 CIA INTERCONNECT lA3 0 lW1 IA7 Figure 1.
Item HP Part Number CD Description Mfr Code 1 85660-00024 0 DECK, YTO LOOP ASSEMBLY 28480 85660-00024 2 1390-0284 0 CAP SCREW ASSEMBLY 28480 3 0520-0129 8 SCREW, MACH, 2-56, .312-IN LG, PAN HD 28480 0520-0129 4 2190-0890 1 WASHER, LOCK, 2-56 (FOR SCREW (3)) 28480 2190-0890 5 8566&20088 8 STUD, YTO LOOP ASSEMBLY 28480 85660-20088 6 8566600035 3 COVER, HOUSING (AllA YTO c$ DET) 28480 8566600035 7 2200-0165 6 SCREW, MACH, 4-40, .
HP Part Number 85660-60175 Al lA4 YTO Phase Detector Reference Designation HP Part Number Mfr Code Description Xl - Mfr Part Number AllA 85660-60175 E 1 BOARD ASSEMBLY. YTO PHASE DETECTOR 28480 85660-60175 AllA4Cl AllA4C2 AllA4C3 AllA4C4 AllA4C5 0160-3787 0180-0116 0180-0197 0160-2307 0160-2307 E 1 E 4 4 1 1 1 1 1 CAPACITOR-FXO CAPACITOR-FXO CAPACITOR-FXO CAPACITOR-FXD CAPACITOR-FXD 1UF +-lo% 6.8lJF+-10% 2.
HP Part Number 85660-60175 Al lA4 YTO Phase Detector Reference Designation HP Part Number Mfr Code Description 31 - Mfr Part Number 7 1 1 1 1 RESISTOR 196 +-1% .05W TF TC=D+-100 RESISTOR 100 +-1% .D5W TF TC=O+-100 RESISTOR 261 1% .125W TF TC=O+-100 RESISTOR 196 1% .125W TF TC=O+-100 19701 19701 19701 19701 50635 50635 SFR25H SFR25H 0757-0280 0757-0280 0757-0442 0757-0442 0757-0442 3 3 9 9 9 1 1 1 1 1 RESISTOR 1K +-1% .125W TF TC=O+-100 RESISTOR 1K +-1% .125W TF TC=O+-100 RESISTOR 10K +-1X .
A ,:“J I 0 DET OUT A 1% +2ov A I:% HYGH A ITI:3 HLEY TO TO TO TO AllJ3 AllC8 A l l C 2 AllCl A,:“,, 20-30 IN HULY -5.
Al lA5 Al IA5 Sampler, Circuit Description The AllA Sampler mixes the output of the AllA YTO (RF INPUT) with the Nth harmonic of the output of the A7 M/N Reference Loop (M/N IN). The 20 to 30 MHz difference signal (IF OUT) is output to the AllA YTO Phase Detector to be compared with the 20 to 30 MHz (20/30 IN) from the A10 20/30 Synthesizer for the purpose of phase locking. Sampler Drive Amplifier @ The output of the A7 M/N Reference Loop (M/N IN) is applied to common-base amplifier Q3.
Gain Adjust @ After being filtered, the IF signal is applied to common-emitter amplifier Q6 which has adjustable gain. IF Gain adjustment Rl can be adjusted to provide from 5 dB to 20 dB of gain. This is used to adjust the level of the IF signal to the proper level for comparison to the 20/30 signal in the AllA YTO Phase Detector. Output Amplifier @ The IF signal is further amplified by output amplifier Q5 and Ql. Gain is approximately 21 dB.
06 AllJ5 A l lC4 A l lC5 A l lC7 \ A l lA3 YTO AllJ2 0 (6 PLACES) 0 (BENEATH AllUl) A l IUI SAMPLER w (2 PLACES) w(11 P L A C E S ) PL A C E S ) Figure 1.
Item HP Part Number CD Description 1 8566@00024 0 DECK, YTO LOOP ASSEMBLY 28480 85660-0002~ 2 2200-0165 6 SCREW, MACH, 4-40, .25-IN LG, FLAT HD 28480 3 8566GOOO34 2 COVER, HOUSING (AllA SAMPLER) 28480 85660~0003~ 4 8566&20088 8 STUD, YTO LOOP ASSEMBLY 28480 85660-20086 5 86701-20009 5 HOUSING, YTO LOOP ASSEMBLY 28480 86701-2000: 6 1205-0011 0 HEAT SINK, TO-5/TO-29-CS 28480 1205-0011 7 2200-0103 2 SCREW, MACH, 4-40, .
HP Part Number 85660-60199 Al lA5 Sampler Mfr Code Description Mfr Part Number AllA 85660-60199 6 1 BOARD ASSEMBLY, SAMPLER 28480 85660-60199 AllA5Cl Al lA5C2 AllA5C3 Al lA5C4 AllA5C5 0121-0046 0121-0046 0180-0197 0180-0116 0160-2055 2 2 8 1 9 1 1 1 1 1 CAPACITOR-V TRMR-CER 9-35PF ZOOV PC-MTG CAPACITOR-V TRMR-CER 9-35PF 200V PC-MTG CAPACITOR-FXD 2.2lJF+-10% POVDC TA CAPACITOR-FXD 6.8lJF+-10% 35VDC TA CAPACITOR-FXD .
HP Part Number 85660-60199 Al lA5 Sampler Reference Designatior 1 HP Part Number c c Jt Description Mfr Code Mfr Part Number - AllA5MP8 Al lA5Ql Al 1A5Q2 AllA5Q3 11200-0173 I 1854-0247 I .854-0345 I.
HP Part Number 85660-60199 Al lA5 Sampler Reference Designation HP Part Number Description Mfr Code AllA5TPl 1360-0124 CONNECTOR-SGL CONT PIN .04-IN-BSC-SZ RNC 97300 Al lA5TP2 3360-0124 CONNECTOR-SGL CONT PIN .
0 0 fL0 0z I ;: 01 ug + $2 p-c12 I$” ”\1
A12 Al2 Front-Panel Interface, Circuit Description Al2 Front-Panel Interface contains the miscellaneous digital functions for interfacing with the Al5 Controller. Keyboard Matrix @ The keyboard is organized as a matrix (rows and columns) of normally open SPST switches. The rows are driven by U2 and U3. U6 functions as a key-down detector. Q2 and associated circuitry debounce the key switches, and U14B latches the key-down condition. Ul and U4 gate the key columns onto the Data Bus.
M/N Storage @ Each flag can be enabled (interrogated), or all flags can be enabled. U30 and U32 provide the logic, and U20 stores the state of the enabled flags. Address Decoder @ U7, UlO, and U33 decode the address lines, enabling the appropriate ICs to gate or store data for the Data Bus. Attenuator Correction Rom @ U8 is a PROM (programmable read-only memory) that contains the attenuation errors (calibration data) of the RF attenuator.
KC0 I KC1 KC2 KC3 I SPACE 0 0 MHZ -dml see Hz PV gsec KRO SAVE 0 RECALL 0 HOLD 0 0 0 0 0 0 ( KRl KR2 KR3 ) 0 1 a SWEEP TIME 0 P ZOOM 0 0 4 / 7 C D Y 0 0 STOP FREO 0 AUTO J K CFS ISTEP ZE 0 MKR/ASTPSIZE START FREO NORMAL AUTO G 2 A b TRACE A j 0 0 TRACE B 4 0 0 x VIDEO 0 0 ENTER dB/O I” A FREQUENCY SPAN L- 7 I ENTER 0 REFERENCE LEVEL TRACE A AZ?!? t: 0 SIGNAL TRACK MAX HOLD 0 0 P MARKER PEAK SEARCH MKR-r REF LYL CLEARWnTE MAX HOLD VIDEO
Table 1.
Table 1.
HP Part Number 85660-60211 Al2 Front Panel Interface Reference Designation HP Part Number Mfr Part Number Mfr Code Description 3Y - Al.2 85660-60211 3 1 BOARD ASSEMBLY, FRONT PANEL INTERFACE (SERIAL PREFIXES: 2410~-2430~) 28480 85660-60211 A12Cl AlZC2 A12C3 A12C4 A12C5 0180-0197 0180-0197 0180-0197 0160-4835 0180-2683 8 a 8 7 1 1 1 1 1 1 CAPACITOR-FXD 2.2UF+-10% 20VDC CAPACITOR-FXD 2.2UF+-10% 2OVDC CAPACITOR-FXO 2.2UF+-10% EOVDC CAPACITOR-FXD .lUF +-lo% 50VDC CAPACITOR-FXD 4.
HP Part Number 85660-60211 Al2 Front Panel Interface Reference Designation HP Part Number AlZR22 A12R23 A12R24 A12R25 3698-7260 3698-7243 3698-7260 3698-7243 A12R26 A12R27 A12R28 A12R29 A12R30 C D 3) 7 1 Description Mfr Code Mfr Part Number 6 7 6 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR 10K +-1% .05W TF TC=O+-100 1.96K +-1% .05W TF TC=O+-100 10K +-1% .05W TF TC=O+-100 1.96K +-I% .
HP Part Number 85660-60211 Al2 Front Panel interface *Indicates factoy-selected value 85660-60211 Parts List Page 3 of 3
HP Part Number 85660-60246 Al2 Front Panel Interface Reference Designation HPPart C Number D Qty Mfr Code Description Mfr Part Number Al2 85660-60246 4 1 BOARD ASSEMBLY, FRONT PANEL INTERFACE (SERIAL PREFIXES: 2449A - 2613~) 28480 85660-60246 A12Cl A12C2 A12C3 A12C4 A12C5 0180-0197 0180-0197 0180-0197 0160-4835 0180-2683 a a a 7 1 1 i 1 1 1 CAPACITOR-FXO CAPACITOR-FXO CAPACITOR-FXO CAPACITOR-FXO CAPACITOR-FXO 56289 56289 56289 04222 04222 1500225X9020A2-OYS 1500225X9020A2-OYS 1500225X9020A
HP Part Number 85660-60246 Reference Designation HP Part Number C sty - D Al2 Front Panel Interface Description Mfr Code Mfr Part Number A12R21 A12R22 A12R23 A12R24 A12R25 0698-7260 0698-7260 0698-7243 0698-7260 0698-7243 7 7 6 7 6 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 10K +-1% .05W TF TC=O+-100 10K +-I% .05W TF TC=O+-100 1.96K +-1% .05W TF TC=O+-100 10K +-1% .05W TF TC=O+-100 1.96K +-1% .
HP Part Number 85660-60246 Al2 Front Panel Interface - Reference Designation HP Part Number m Description Mfr Code Mfr Part Number A12U33 A12W2 1820-1216 3757-0346 1 1 IC OCOR TTL LS 3-TO-a-LINE 3-INP RESISTOR 10 +-I% .
HP Part Number 85660-60290 Al2 Front Panel Interface Reference Designation HP Part C N u m b e r D Qty Al2 85660-60290 A12Cl A12C2 A12C3 A12C4 A12C5 0180-0197 0180-0197 0180-0197 0160-4835 0180-2683 A12C6 A12C7 A12C8 A12C9 A12ClO 4 Mfr Code Description Mfr Part Number 1 BOARD ASSEMBLY, FRONT PANEL INTERFACE (SERIAL PREFIX: 2618A) 28480 85660-60290 a a a 7 1 I 1 1 1 1 CAPACITOR-FXO CAPACITOR-FXO CAPACITOR-FXO CAPACITOR-FXO CAPACITOR-FXO 2.2UF+-10% 2.2UF+-10% 2.2UF+-10% .lUF +-lo% 4.
HP Part Number 85660-60290 Al2 Front Panel Interface - Reference Designation HP Part Number Description m Mfr Code Mfr Part Number A12R22 A12R23 A12R24 A12R25 0698-7260 0698-7243 0698-7260 0698-7243 7 6 7 6 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR 10K +-1% .05W TF TC=O+-100 1.96K +-1X .05W TF TC=O+-100 10K +-I% .05W TF TC=O+-100 1.96K +-1% .
HP Part Number 85660-60290 Al2 Front Panel Interface Reference Designation A12W2 HP Part Number 3757-0346 C Description D 2 1 RESISTOR 10 +-1% .125W TF TC=O+-100 *Indicates factory-selected value Mfr Code 91637 Mfr Part Number CMF-55-l.
( P / O A23W7) J8 XA15Pl XA12Pl A23 Motherboard Instrument Bus, Interconnect Diagram
85660-60290 0 TPI 85660-60246 w TR %I nion 26 ~nnnnnnnnnnnnnnn [pz- ml 50 1 t 25 F 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 , P I P 2 1 16 18 36 19 P3 0 TPI 85660-60211 II Eel Ml pq m 15 30 TEA,,,,, k m 164 I - tIzEL - IA2663 r rxzq 1~211 nononnnnnnnnonnnnnJ I 19 P2 18 36 l r i pRT pi71 1 nnnnnnnnnnnnnnn (R18 1 16 P3 15 30 Al2 Front-Panel Interface Component Locations, 85660-60211, 85660-60246, 85660-60290
Al5 Al5 Controller, Circuit Description The Al5 controller performs the main control functions of the spectrum analyzer. The board includes a 16-bit microprocessor (the instrument’s main processor), read-only memory (ROMs), random-access memory (RAMS), and HP-IB circuitry. The schematic shows how the main processor, memory, HP-IB, and other circuits on the A15 Controller are interconnected via the microprocessor’s 23-bit address bus and the 16-bit data bus.
frequency is derived from division of the output signal of a 14.7456 MHz hybrid crystal clock oscillator. The Al5 Controller firmware includes extensive diagnostics which are executed whenever the instrument is powered up or the INSTRUMENT PRESET key is pressed. The microprocessor executes a self-test routine and indicates the results via LEDs. A memory failure, microprocessor failure, or Instrument Bus failure can usually be pinpointed to the failed component using these indicators.
Revision Firmware Revision Firmware EPROM EPROM Part Part Serial Serial Code Date Numbers Prefixes A 13.9.86 85660-80053 85660-80054 85660-80055 85660-80123 85660-80056 2410A through 2421A B 17.7.84 85660-80071 2430A 85660-80071 2430A 85660-80072 85660-80072 through 85660-80073 2449A 85660-80073 2449A 85660-80074 c 14.1.85 85660-80080 2503A 85660-80080 2503A 85660-80081 through 85660-80081 85660-80082 2516A 85660-80082 2516A 85660-80083 D 5.5.
Al5 Controller, Troubleshooting Troubleshooting the Al5 Controller is divided into two levels: Level 1 is Self Test which uses the built-in diagnostics of the spectrum analyzer to isolate the failure. No external test equipment is required. Level 2 is Manual Tests which require the use of general troubleshooting equipment such as a digital voltmeter and oscilloscope. This level is required when the Self Test can’t isolate the failure.
the two front panel INSTR CHECK LEDs turn on when the LINE switch is set to ON and within a few seconds turn off (indicating no digital problems), but symptoms (such as improper CRT display or improper response to particular commands) indicate that the problem is in the digital area, a “LONG POP” can be performed.
Try replacing U20 and U42 PALS first, then try replacing U39 and U40 ROMs. If I/O failure still occurs, probe I/O lines with oscilloscope. Level 2 Manual Tests If the Self Test doesn’t lead to a failed component, it will be necessary to use a DVM or an oscilloscope. The following procedure may help locate the failed component: a. Check all power supply voltages that supply power to the Al5 Controller. b. Check processor clock by connecting oscilloscope to A15TP2-4 (CK).
Table l-l. Al5 Controller Self Test Fail Indicators Al5 LED On Affected Circuitry DSl Processor DS2 Top Box Address DS3 Probable Failure Al5U26 1 Use oscilloscope to isolate failure. Bottom Box Address Use oscilloscope to isolate failure DS4 I/O, Data Bus Use oscilloscope to isolate failure.
HP Part Number 85660-60209 Al5 Controller Reference Designation HP Part C Number D Qty Mfr Code Description 28480 Mfr Part Number 85660-60209 Al5 85660-60209 9 1 BOARD ASSEMBLY, CONTROLLER (SERIAL PREFIXES: 2410A - 2449A) A15BTl A15Cl A15C2 A15C3 A15C4 1420-0331 0160-4554 0160-4554 0160-4554 0160-4554 3 7 7 7 7 1 1 1 1 1 BATTERY 3.6V 1.75A-HR LITHIUM THIONYL CAPACITOR-FXD .OlUF +-20% SOVDC CER CAPACITOR-FXD .OlUF +-20% 50VDC CER CAPACITOR-FXD .OlUF +-20% 50VDC CER CAPACITOR-FXD .
HP Part Number 85660-60209 A15 Controller Reference Designation HP Part Number C D Jtty - Description A14DS13 A15DS14 A14DS15 A15El A15Jl 1990-0958 1990-0958 1990-0957 1251-4787 1251-5926 7 7 6 2 3 1 1 1 1 1 LED-LAMP LED-LAMP LED-LAMP SHUNT-DIP CONNECTOR A15J2 A15J3 A15J5 A15Ll A15L2 1251-5905 1200-0607 1251-5619 9140-0864 08558-80011 8 0 1 1 6 1 1 1 1 1 A15MPl A15MP2 A15MP3 A15MP4 A15MP5 1400-1267 1251-5177 1480-0073 4040-0749 4040-0753 4 6 6 4 0 A15MP6 A15MP7 A15MP8 A15MP9 AlSMPlO 2200-
HP Part Number 85660-60209 Al5 Controller Reference Designation HP Part Number Mfr Code Mfr Part Number 31 Description 1 1 1 1 1 IC BFR TTL ALS OR QUAD 2-INP IC-GENERAL PURPOSE INTERFACE BUS ADAPTER IC INV TTL LS HEX I-INP IC DCDR TTL LS 3-TO-8-LINE 3-INP IC-PARALLEL INTERFACE/TIMER/8MHZ/MC68ODO 28480 28480 01295 01295 28480 1820-3401 1820-2551 SN74LS04N SN74LS138N 1820-3449 01295 01295 01295 01295 28480 SN74LS373N SN74LS374N SN74LS32N SN74LSllN 1818-3183 28480 28480 28480 28480 1818-3305 1818-
HP Part Number 85660-60209 Al5 Controller Reference Designation A15Yl HP Part Number .813-0196 3Y 1 Description XTAL-CLOCK-OSCILLATOR 14.
HP Part Number 85660-60245 Al 5 Controller Reference Designation HP Part C Number D Qty Mfr Code Description Al5 85660-60245 3 1 BOARD ASSEMBLY, CONTROLLER (SERIAL PREFIX: 2503~) A15BTl A15Cl A15C2 A15C3 A15C4 1420-0331 0160-4554 0160-4554 0160-4554 0160-4554 3 7 7 7 7 1 1 1 1 1 BATTERY 3.
HP Part Number 85660-60245 A15 Controller Reference Designation HP Part Number c c Description a! - Mfr Code Mfr Part Number A15J3 A15J5 A15Ll Al5MPl A15MP3 1200-0607 1251-5619 9140-0875 1400-1267 1480-0073 ( I .! 1 E 1 1 1 1 2 16-PIN IC SOCKET CONN-POST TYPE .lOO-PIN-SPCG 4-CONT INDUCTOR 80uH 10% HOLDER-BAT .531-.656-DIA FOR AA CELLS PIN-ROLL .062-IN-DIA .
HP Part Number 85660-60245 Al 5 Controller Reference Designation A15U17 A15U18 II I HP Part Number QtY I Description Mfr Part Number 1818-3305 1818-3183 0 ALTERNATE-IC CMOS 65536 (64~) STAT RAM 1 Ic CMOS 65536 (64~) STAT RAM 150-NS 3-s TC5565APL-15 UPD4364C-15L A15U18 A15U20 A15U21 A15U22 A15U23 1818-3305 5180-2330 1810-0205 1820-2024 1810-0394 0 ALTERNATE-IC CMOS 65536 (64~) STAT RAM 1 IC 16R4 PAL PRGMD 1 NETWORK-RES 8-SIP 4.7K OHM X 7 1 IC DRVR TTL LS LINE DRVR OCTL 1 NETWORK-RES 8-SIP 6.
( P / O A23W7) J8 XA15Pl XA12Pl A23 Motherboard Instrument Bus, Interconnect Diagram
Al6 Al6 Scan Generator, Circuit Description The Al6 Scan Generator provides tuning voltage ramps to the IF-Display Section (SCAN OUT and AUX OUT) and scaled ramps to the AlOA8 PLL2 Discriminator and A19 DAC. The SCAN OUT ramp to the IF-Display Section is used for the horizontal sweep signal for the CRT display update, and the AUX OUT ramp is used by the A4Al Video Processor to maintain video information in proper correlation with the horizontal sweep and frequency tuning.
Ramp Control Logic 0, Switch Driver @, Ramp Reset Switch @I, and Ramp Reset Amplifier @ The sweep ramp is formed by alternately charging and discharging Cl, according to the following cycle. Control line HSWP resets the sweep (High = Sweeping). When HSWP goes low (determined by IF-Display Section), LHOLD (U5C pin 8) goes low, turning on CRl. When CR1 is on, charging current bypasses ramping capacitor Cl and instead passes to ground via CRl. Ramping capacitor Cl stops charging.
Front-Panel Interface and is enabled (pulled low) whenever front-panel key selections indicate that more than one harmonic board is being swept. Voltage Reference @ Voltage Reference U7 and associated circuitry provide a stable -7 V dc reference voltage for both the Sweep Time and Aux Out Offset DACs. Scan Test Circuit @ The control signal HSWP (High = Sweeping) is normally pulled low indicating the end of a sweep by the A3Al Trigger in the IF-Display Section.
RAW GENERATOR AUX GUT S”MM I NG ;‘A”, OUT cFL INSTRUMENT BUS 1oEm-1cr313 SCAN TEST T-SHOT MULTlVlBRATOR q 1J-L J2 l SCAN OUT J3 3 SCAN OUT Figure 1.
Reference Designation HP Part Number Al6 85660-60198 A16Cl A16C2 A16C3 A16C4 A16C5 0160-5609 0160-2208 0160-4892 0180-0116 0180-0228 A16C6 A16C7 A16C8 A16C9 A16ClO c c a - Al 6 Scan Generator Description Mfr Code Mfr Part Number 1 BOARD ASSEMBLY, SCAN GENERATOR (SERIAL PREFIXES: 2410~-2430~) 28480 85660-60198 r 1 1 1 1 1 CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD 84411 09023 56289 56289 56289 HEW-687 CD15FD331JO3 2C37Z5U105M025C 150D685X903582 1500226X901582 0
HP Part Number 85660-60198 Al6 Scan Generator Reference Designation HP Part Number A16Jl A16J2 A16J3 A16J4 A16MP3 1250-0543 1250-0543 1250-0543 1250-0543 1251-2194 a a a a A16MP4 A16MP6 A16MP7 A16MP9 AlGMPlO Mfr Code Description BY - 1 1 1 1 1 2 CONNECTOR-RF SM-SNP CONNECTOR-RF SM-SNP CONNECTOR-RF SM-SNP CONNECTOR-RF SM-SNP CONNECTOR-SGL CONT 1480-0073 4040-0749 4040-0754 2200-0143 2190-0003 1 4 1 C a 2 1 1 2 2 A16MPll Al6Ql A1602 A16Q3 A1694 0380-1194 1855-0020 1855-0020 1855-0020 1855-0020
HP Part Number 85660-60198 Al 6 Scan Generator Reference Designation w - HP Part Number Mfr Part Number Mfr Code Description A16R30 A16R31 0698-3160 0757-0289 a 2 1 1 RESISTOR 31.6K 1% .125W TF TC=O+-100 RESISTOR 13.3K +-1% .125W TF TC=O+-100 19701 19701 SFR25H SFR25H A16R32 A16R33 A16R34 A16R35 A16R38 0757-1094 0757-0439 0757-0442 0698-3154 0698-3157 9 4 9 0 3 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 1.47K +-1% .125W TF TC=O+-100 6.81K +-1X .125W TF TC=O+-100 10K +-1% .
HP Part Number 85660-60198 Al6 Scan Generator Reference Designation HP Part Number C D Mfr Code Mfr Part Number 3Y - Description 1 1 1 1 1 RESISTOR 10K +-1X .125W TF TC=D+-100 RESISTOR l.lK +-1% .125W TF TC=O+-100 RESISTOR 162 +-1% .125W TF TC=O+-100 RESISTOR 1.78K +-1X .125W TF TC=O+-100 CONNECTOR-SGL CONT PIN 1.
HP Part Number 85660-60247 Al 6 Scan Generator Reference Designation HP Part C Number D sty - Description Mfr Code Mfr Part Number Al6 85660-60247 5 1 BOARD ASSEMBLY SCAN GENERATOR (SERIAL PREFIX: 2449A) 28480 85660-60247 A16Cl A16C2 A16C3 A16C4 A16C5 0160-5609 0160-2208 0160-4892 0180-0116 0180-0228 5 4 6 1 6 1 1 1 1 1 CAPACITOR-FXD 1OUF +-lo% CAPACITOR-FXD 330PF +-5% CAP-FXD 1uF 25 V CAPACITOR-FXD 6.
HP Part Number 85660-60247 A16 Scan Generator Reference Designation HP Part Number C D 3Y - Mfr Code Description Al 6CR6 A16Jl A16J2 A16J3 A16J4 1901-0040 1250-0543 1250-0543 1250-0543 1250-0543 1 8 8 8 8 1 1 1 1 1 DIODE-SWITCHING 30V CONNECTOR-RF SM-SNP CONNECTOR-RF SM-SNP CONNECTOR-RF SM-SNP CONNECTOR-RF SM-SNP A16MP3 A16MP4 A16MP6 A16MP7 1251-2194 1480-0073 4040-0749 4040-0754 1 6 4 1 2 2 1 1 A16MP9 AlGMPlO AlGMPll A16Ql A16Q2 2200-0143 2190-0003 0380-1194 1855-0020 1855-0020 0 8 1 8 8
HP Part Number 85660-60247 Al6 Scan Generator Reference Designation HP Part Number C D 3Y - Mfr Code Description Mfr Part Number A16R28 0698-3161 9 1 RESISTOR 38.3K 1% .125W TF TC=O+-100 19701 SFR25H A16R30 A16R31 A16R32 A16R33 A16R34 0698-3160 0757-0289 0757-1094 0757-0439 0757-0442 8 2 9 4 9 1 1 1 1 1 RESISTOR 31.6K 1% .125W TF TC=O+-100 RESISTOR 13.3K +-1% .125W TF TC=O+-100 RESISTOR 1.47K +-1% .125W TF TC=O+-100 RESISTOR 6.81K +-1% .125W TF TC=O+-100 RESISTOR 10K +-1% .
HP Part Number 85660-60247 Al 6 Scan Generator Reference Designation HP Part Number sty - Description Mfr Code Mfr Part Number A16R95 A16R96 A16R97 A16R98 A16TPl 3757-0442 0757-0424 3757-0405 5757-3439 1251-0600 9 7 4 9 0 1 1 1 1 1 RESISTOR 10K +-1X .125W TF TC=O+-100 RESISTOR l.lK +-1% .125W TF TC=O+-100 RESISTOR 162 +-1% .125W TF TC=O+-100 RESISTOR 178K +-1% .125W TF TC=O+-100 CONNECTOR-SGL CDNT PIN 1.
R F S E C T I O N -------------------------,, Al6 SCAN GENERATOR 85660-60198 (1 OF 2) ( S E R I A L P R E F I X E S : 2410~-2430~) I I I I I 4 I I I 4LlRP AIW-2 NC 4OR1 AISPZ-20 NC I I I CAPAClTANCE IS IN l.ICROFARAOS(~F) I N D U C T A N C E IS I N YICROHENRIES(,,H) 4 -5.m ,082 OS3 A15P2-6 AlSP2-24 a E OR4 A15P2-7 E AIWZ-25 E 086 A 15P2-8 E 007 A15P2-26 E ,095 AIW-16.34 AlW-16.34 NC 5 - 1 0 ” R 20 -10” AIW-13.31 Al*Pl-I3.3I 3.
R F S E C T I O N - Al6 SCAN GENERATOR 85660-60247 (1 OF 2) (SERIAL PREFIX: 2449A) ----P--P - - - P - - P - - - - - - - - - ; I I I I 1 SIGNAL P 1 FUNCTION BLOCK TO/FROM c;No 19 L .
Al7 Al7 Positive Regulator, Circuit Description Al? Positive Regulator provides +20 V, +12 V, and +5.2 V regulated voltages to the instrument. It also provides for thermal shutdown at temperatures above 85°C or if the fan fails, controls power to the oscillator in the A22 10 MHz Frequency Standard and ensures power-up and power-down operation that will not invalidate data in Al5 Controller.
+20 V Regulator @ The +20 V supply has as its reference a 6.2 V zener diode VR2 biased from the output of the j-20 V supply, @ on the schematic. The +20 V output is divided down by R9, R50, and RlO to 6.2 V. This voltage is compared with the t6.2 V reference voltage by amplifier Ul. This amplifier sinks current from the current source Ql so that the voltage at the base of the series-pass transistor A23Q23 ( on A23 Motherboard) is such that the output of the supply is at +20 V.
the output of U3A is high, and CR12 is reverse biased. If the dc input voltage to the +5.2 V supply is greater than +8.6 V, then the voltage at pin 5 of U3B is greater than +6.2 V, and the output of U3B is high. This turns on transistors Q13 and Q7, pulling the collector of Q7 to about +5 V. This provides the HPUP signal. If any of the above conditions are not met, HPUP remains low. R59 and Cl4 provide an additional time delay at turn-on to allow the supplies to settle down.
HP Part Number 85660-60174 Al7 Positive Regulator Reference Designation HP Part Number Description Mfr Code Mfr Part Number Al7 95660-60174 7 1 BOARD ASSEMBLY, POSITIVE REGULATOR (SERIAL PREFIXES: 2410A - 2532A) 28480 85660-60174 A17Cl A17C2 A17C3 A17C4 A17C5 3180-2205 3180-0116 3180-1746 3160-2199 3180-0228 3 1 5 2 6 1 1 1 1 1 CAPACITOR-FXD .33UF+-10% CAPACITOR-FXD 6.
HP Part Number 85660-60174 Al7 Positive Regulator Reference Designation HP Part Number Xl - Description Mfr Code Mfr Par! Number A17Q4 A17Q5 A17Q6 A17Q7 A17Q8 1854-0441 1854-0404 1854-0404 1853-0281 1854-0404 1 1 1 1 1 TRANSISTOR NPN TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR NPN NPN PNP NPN SI m=5.
HP Part Number 85660-60174 Al7 Positive Regulator Reference Designation HP Part C Number D Qty Mfr Code Description Mfr Part Number 1 0 2 1 1 1 RESISTOR 316 1% .125W TF TC=O+-100 RESISTOR 100 +-1X .125W TF TC=O+-100 RESISTOR 10 +-1% .
HP Part Number 85660-60174 Al7 Positive Regulator Reference Designation A17VR5 A17VR7 A17VR8 A17VR9 HP Part Number 1902-0686 1902-3203 1902-3172 1902-0049 sty 1 1 1 1 Description DIODE-ZNR 6.2V 2% DO-7 PD=.4W TC=+.002% DIODE-ZNR 14.7V 5% DO-35 PD=.4W DIODE-ZNR 11V 2% DO-35 PD=.IW TC=+.062% DIODE-ZNR 6.19V 5% DO-35 PD=.
HP Part Number 85660-60275 Al7 Positive Regulator Reference Designation HP Part Number ;)t Description Mfr Code Mfr Part Number Al7 t35660-60275 9 1 BOARD ASSEMBLY, POSITIVE REGULATOR (SERIAL PREFIXES: 2607A-2729A) 28480 85660-60275 A17Cl A17C2 A17C3 A17C4 A17C5 ()iao-2205 (Ilao-0116 (1180-1746 (1160-5271 (nao-0228 3 1 5 7 6 1 1 1 1 1 CAPACITOR-FXO .33UF+-10% CAPACITOR-FXD 6.
HP Part Number 85660-60275 Al7 Positive Regulator Reference Designation HP Part Number c c 31 - Description Mfr Code Mfr Part Number A17MP15 A17Ql A17Q2 A17Q3 A17Q4 2190-0018 1853-0012 1853-0451 1854-0404 1854-0456 1 1 1 1 1 WASHER-LK HLCL TRANSISTOR PNP TRANSISTOR PNP TRANSISTOR NPN TRANSISTOR NPN NO. 6 .
HP Part Number 85660-60275 Al7 Positive Regulator Reference Designatior HP Part Number C Mfr Code Description D a;ltl - Mfr Part Number A17R35 A17R36 0698-6835 0698-6835 0 0 1 1 RESISTOR 3.16K +-0.5% .125W TF TC=O+-50 RESISTOR 3.16K +-0.5% .125W TF TC=O+-50 19701 19701 5033R 5033R A17R37 A17R38 A17R39 A17R40 A17R41 0683-0275 0698-3444 0757-0401 0757-0346 0698-3150 9 1 0 2 6 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 2.7 5% .25W CF TC=O-400 316 1% .125W TF TC=O+-100 100 +-1X .
HP Part Number 85660-60275 Al7 Positive Regulator Reference Designation HP Part C Number D Qty Description Mfr Code A17VRl A17VR2 A17VR3 A17VR4 A17VR5 1902-3171 1902-0686 1902-3252 1902-0049 1902-0686 7 3 5 2 3 1 1 1 1 1 DIODE-ZNR DIODE-ZNR DIODE-ZNR DIODE-ZNR DIODE-ZNR 11V 5% DO-35 PD=.4W TC=+.062% 6.2V 2% DO-7 PD=.4W TC=+.002% 22.6V 2% DO-35 PD=.4W 6.19V 5% DO-35 PD=.4W 6.2V 2% DO-7 PD=.4W TC=+.
HP Part Number 85660-60323 Al7 Positive Regulator Reference Designation HP Part C Number D Qty Description Mfr Code Mfr Part Number Al7 85660-60323 8 1 BOARD ASSEMBLY, POSITIVE REGULATOR (SERIAL PREFIX: 2747~) A17Cl A17C2 A17C3 0180-2205 0180-0116 0180-1746 3 51 A17C4 A17C5 0160-5271 0180-0228 7 6 1 1 1 1 1 CAPACITOR-FXD .33UF+-10% 35VDC TA CAPACITOR-FXD 6.
HP Part Number 85660-60323 Reference Designation HP Part Number C D Al7 Positive Regulator a - Description Mfr Code Mfr Part Number A17MP15 A17Ql A1792 A17Q3 A17Q4 2190-0018 1853-0012 1853-0451 1854-0404 1854-0456 5 4 5 0 2 1 1 1 1 1 WASHER-LK HLCL TRANSISTOR PNP TRANSISTOR PNP TRANSISTOR NPN TRANSISTOR NPN NO. 6 .
HP Part Number 85660-60323 Al7 Positive Regulator Reference Designation HP Part C Number D Qty Mfr Code Description Mfr Part Number A17R35 A17R36 0698-6835 0698-6835 0 0 1 1 RESISTOR 3.16K +-0.5% .125W TF TC=O+-50 RESISTOR 3.16K +-0.5% .125W TF TC=O+-50 19701 19701 5033R 5033R A17R37 A17R38 A17R39 A17R40 A17R41 0683-0275 0698-3444 0757-0401 0757-0346 0698-3150 9 1 0 62 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 2.7 5% .25W CF TC=O-400 316 1% .125W TF TC=O+-100 100 +-1% .
HP Part Number 85660-60323 Al7 Positive Regulator Reference Designation HP Part Number C c 3 Description Mfr Code A17VRl A17VR2 A17VR3 A17VR4 A17VR5 1902-3171 1902-0686 1902-3252 1902-0049 1902-0686 j : t i : 1 1 1 1 1 DIODE-ZNR 11V 5% DO-35 PD=.4W TC=+.062% DIODE-ZNR 6.2V 2% DO-7 PD=.4W TC=+.002% DIODE-ZNR 22.6V 2% DO-35 PD=.4W DIODE-ZNR 6.19V 5% DO-35 PD=.4W DIODE-ZNR 6.2V 2% DO-7 PD=.4W TC=+.
8750 OS3 +2ov THERMAL OS4 A D J U S T S H U T D O W N f12V I I , P I 23 Y---4 44 H P P / N 1251-5177 H P P / N 0160-4832 H P P / N 0757-0442 Al7 Positive Regulator Component Locations, 85660-60174
; d ”zc,a*n!T + 5 P + +a 2 t: ; I7 Cl5 + R64 R65 F3 Em:4 Pm :q Q 27Z+a :zg In <
R50 ADJUST OS3 THERMAL SHUT DOWN DS4 +12” CB ” u?NW p$; oaz;: F.
Al8 Al8 Negative Regulator, Circuit Description Al8 Negative Regulator provides -5.2 V, -10 V, and -40 V regulated voltages to the instrument. All three supplies derive their reference from the +20 V supply on the Al7 Positive Regulator. The relationship of Al8 to A8 Rectifier, Al7 Positive Regulator, and A23 Motherboard is shown on the A8 schematic. -10 V Regulator @ The -10 V supply is referenced to the +20 V supply by a resistor divider consisting of R5, R6, and R7 connected between the two supplies.
RF Section Internal Fuse Replacement Note For location of hardware and cables referred to in this procedure, see Figure 1. Warning Remove ac line cord from both instruments before proceeding with this procedure. 1. Position instrument upside-down as shown in view A. 2. Remove feet @ from rear of RF Section by removing screws @ shown in view A. 3. Remove bottom cover by loosening screw @ and pulling cover toward rear of instrument. 4. Location of fuses is shown in view B.
HP Part Number 85660-60137 A18 Negative Regulator Reference Designation Description HP Part c Number D QtY Mfr Code Mfr Part Number Al8 85660-60137 2 1 BOARD ASSEMBLY, NEGATIVE REGULATOR (SERIAL PREFIXES: 2410~-2618~) 28480 85660-60137 A18Cl A18C2 A18C3 A18C4 A18C5 0160-2199 0180-0228 0180-1746 0160-2199 0180-0228 2 6 5 2 6 3 1 1 1 CAPACITOR-FXO 30PF +-5% CAPACITOR-FXD 22UF+-10% CAPACITOR-FXD 15UF+-10% CAPACITOR-FXD 30PF +-5% CAPACITOR-FXD 22UF+-10% 28480 56289 56289 28480 56289 0160-2199
HP Part Number 85660-60137 A18 Negative Regulator Reference Designation HP Part Number c D JtY - Description Mfr Code Mfr Part Number A18Q6 A18Rl A18R2 1854-0404 0811-1552 0757-0421 0 0 4 1 1 1 TRANSISTOR NPN SI TO-18 PO=360MW RESISTOR .56 +-5% 2W PWI TC=O+-800 RESISTOR 825 +-1% .125W TF TC=O+-100 04713 11502 19701 SPH SFR25H A18R3 A18R4 A18R5 A18R6 A18R7 0757-0438 0757-0280 0698-6835 0698-6835 0698-6835 3 3 0 0 0 1 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 5.11K +-1% .
HP Part Number 85660-60137 Al8 Negative Regulator Reference Designation HP Part C Number D Qty Description Mfr Code Mfr Part Number AlETP3 AlETP4 A18TP5 AlEUl AlEU2 1251-0600 1251-0600 1251-0600 1820-0223 1820-0223 0 0 0 0 0 1 1 1 1 I CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ CONNECTOR-SGL CONT PIN 1.
HP Part Number 85660-60289 A18 Negative Regulator Reference Designation HP Part C Number D Qty Description Mfr Code Mfr Part Number A18 85660-60289 5 1 AlECl A18C2 AlEC3 A18C4 A18C5 0160-5271 0180-0228 0180-1746 0160-5271 0180-0228 7 6 5 7 6 1 1 1 1 1 BOARD ASSEMBLY NEGATIVE (SERIAL PREFIX: 2627~) CAPACITOR-FXO 30PF +-5% CAPACITOR-FXO 22UF+-10x CAPACITOR-FXO 15UF+-10% CAPACITOR-FXO 30PF +-5% CAPACITOR-FXO 22UF+-10% 1OOVOC CER 0+-30 15VOC TA LOVOC TA 1OOVOC CER 0+-30 15VOC TA 28480 04222 56289
HP Part Number 85660-60289 Al8 Negative Regulator Reference Designation HP Part Number AlEQ5 AlEQ6 AlaRI AlER2 1854-0271 1854-0404 0811-1552 0757-0421 AlER3 AlER4 AlER5 AlER6 AlER7 0757-0438 0757-0280 0698-6835 0698-6835 0698-6835 AlaRa A18R9 AlaRlO A18Rll AlER12 s D 1 1 1 1 TRANSISTOR NPN SI TRANSISTOR NPN SI RESISTOR .
HP Part Number 85660-60289 Reference Designation HP Part Number C D at] - Al8 Negative Regulator Mfr Code Description Mfr Part Number A18TP2 1251-0600 0 1 CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ 27264 16-06-0034 AlETP3 AlETP4 A18TP5 A18Ul AlEU2 1251-0600 1251-0600 L251-0600 1820-0223 1820-0223 0 0 0 0 0 1 1 1 1 1 CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ CONNECTOR-SGL CONT PIN 1.
u rR30 “,i: (g R23 R I I ,-*a II L *_I ‘d’ I L--FL -1 pi I -+---LJ L----zEl ’ nyrj ~~~ RS9 R38 H R37 CR7 0 O2 0 s: R46 LL c9 0 + B z U, -~~ n :_:I ,’ -eY IR17I r--q CR5 (J @Eg R22 Ia.
DS3 -5.
A19 A19 Digital-to-Analog Converter (DAC), Circuit Description The A19 DAC provides the tuning voltage to the A20 YTO Main Coil Driver used to coarse tune the YTO Start Frequency and set the proper amount of sweep. This occurs at the beginning of each sweep and at the beginning of each harmonic band within a sweep. YTO Pretune Register @ and Pretune DAC @ Frequency information is loaded into pretune registers U5 and U6 from the Instrument Bus. This is coded information from the Instrument Bus.
HP Part Number 85660-60212 A19 DAC Reference Designation HP Part Number C D %Y - Mfr Code Description Mfr Part Number 28480 85660-60212 04222 56289 SR401E105MAAH 199D1123 805-504 Y5V 1032 SR401E105MAAH 805-504 Y5V 1032 A19 85660-60212 4 1 A19Cl A19C2 A19C4 A19C5 A19C6 0160-4005 0180-0630 0160-2055 0160-4005 0160-2055 3 4 9 3 9 1 1 1 1 1 BOARD ASSEMBLY. DIGITAL-TO-ANALOG CONVERTER (DAC) CAPACITOR-FXD 1UF +-20% 1OOVDC CER CAP-FXD 4.7uF 50 V TA CAPACITOR-FXD .
HP Part Number 85660-60212 A19 DAC Reference Designation HP Part Number C 0 Description Jtty - Mfr Part Number Mfr Code A19RlO A19Rll A19R12 A19R13 0757-0346 0698-6348 0757-0439 0757-0346 i c 4 2 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR 10 +-1% .125W TF TC=O+-100 3K +-0.1% .125W TF TC=O+-25 6.81K +-1% .125W TF TC=O+-100 10 +-I% .
HP Part Number 85660-60212 A19 DAC Reference Designation HP Part C Number D Qty Mfr Part Number Mfr Code Description A19R58 0757-0465 6 1 RESISTOR 1OOK +-1% .125W TF TC=O+-100 19701 SFR25H A19R59 A19R60 A19R61 A19R62 A19TPl 0757-0346 0757-0346 0757-0346 0757-0346 1251-0600 22 2 2 0 1 1 1 1 1 RESISTOR 10 +-1X .125W RESISTOR 10 +-1X .125W RESISTOR 10 +-1X .125W RESISTOR 10 +-1% .125W CONNECTOR-SGL CONT PIN 91637 91637 91637 91637 27264 CMF-55-1.
R43 R32 2 5 G H Z 2 . 5 GHL SPAN SPAN pm-0+ o-,..” -0:, yI u+- =: w m Elan0N r0+-.
A20 A20 Main Coil Driver, Circuit Description The A20 Main Coil Driver produces a tuning current proportional to the tuning voltage input from the A19 DAC and applies it to the AllA YTO. Th’is provides coarse tuning of the YTO frequency and sweep. Fine tuning is performed by summing a current proportional to the low-frequency error voltage from the AllA YTO Phase Detector (via the A21 FM Coil Driver) with the tuning current from the A19 DAC.
HP Part Number 85660-60206 A20 Main Coil Driver Reference Designation I HP Part Number A20 85660-60206 AZOCl AZOC2 A20C3 A20C4 A20C5 C D QtY Mfr Code Description Mfr Part Number 6 1 BOARD ASSEMBLY, MAIN COIL DRIVER 28480 85660-60206 0160-4832 0180-1731 0180-0116 0160-0574 0180-0116 ~ 4 8 1 3 1 1 1 1 1 1 CAPACITOR-FXD .OlUF +-lo% 1OOVDC CER CAPACITOR-FXD 4.7UF+-10% 5OVDC TA CAPACITOR-FXD 6.8UF+-10% 35VDC TA CAPACITOR-FXD .022UF +-20% IOOVDC CER CAPACITOR-FXD 6.
HP Part Number 85660-60206 A20 Main Coil Driver Reference Designation HP Par-l Number Ml - A2098 A.
HP Part Number 85660-60206 A20 Main Coil Driver Reference Designation HP Part Number 31 - Mfr Code Description Mfr Part Number A20TP5 A20TP6 A20Ul L251-0600 1251-0600 5081-8117 1 1 1 CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SCREEN 1826-0092 IC OPAMP SC SC 27264 27264 28480 16-06-0034 16-06-0034 5081-8117 A2OVRl A20VR2 1902-0680 1902-3404 1 1 DIODE-ZNR lN827 6.2V 5% DO-7 PD=.4W TC=+ DIODE-ZNR 82.5V 5% DO-7 PD=.4W TC=+.
0 D E T COIL R25 6 . 1 5 GHZ I SR 0 LK GND R34 2 . 3 G H Z MPl \ L---J ON.
A21 A21 FM Coil Driver, Circuit Description The A21 FM Coil Driver performs two functions. 1. Separates the low-frequency component from the error voltage input (DET IN) and directs it to the A20 Main Coil Driver. 2. Provides drive current to the FM Coil of the YTO proportional to the high-frequency component of the error voltage input (DET IN).
HP Part Number 85660-60040 A21 FM Coil Driver HP Part Number C c A21 85660-60040 f 1 BOARD ASSEMBLY, FM COIL DRIVER 28480 85660-60040 A21Cl A21C2 A21C3 A21C4 A21C5 0160-3879 0180-0234 0160-3879 0180-1719 0160-3879 i 1 i i I 1 1 1 1 1 CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD 04222 56289 04222 56289 04222 SR201C103MAAH 109D336X0075F2-DYP SR201C103MAAH 109D226X9025C2-OYP SR201C103MAAH A21C6 A21C7 A21C8 A21C9 A21ClO 0180-0116 0160-4441 0160-3879 0160-3879 0180-0491
HP Part Number 85660-60040 A21 FM Coil Driver Reference Designatior HP Part Number C c A21R6 A21R7 A21R8 A21R9 0757-0441 0698-0083 0698-0083 0698-3155 1 1 1 1 RESISTOR RESISTOR RESISTOR RESISTOR A21RlO A21Rll A21R12 A21R13 A21R14 0698-3155 0698-3155 0757-0416 0698-3150 0757-0442 1 1 1 1 1 RESISTOR 4.641: 1% RESISTOR 4.64K 1% RESISTOR 511 +-I% RESISTOR 2.
I I R-23 E C13 w m m FT “’ I m El Cl2 RI6+ (,=f?q m B @+ II m m I326 El m d m c20 m 1 16 m Pl A21 FM Coil Driver Component Locations, 85660-60040
A22 A22 IO MHz Frequency Standard The 10 MHz Frequency Standard provides a stable frequency reference signal for the 100 MHz Reference Loop to phase lock to. The 100 MHz Reference Loop (A7Al Reference Phase Detector and A7A2 100 MHz VCXO) in turn provides stable frequency reference signals of 10 MHz, 20 MHz, and 100 MHz to lock the remaining phased locked loops-A7 M/N Reference, A10 20/30 Synthesizer, and A6A9 Phase Lock.
5. When installing new 10 MHz Standard, check that rear studs are supported by both rear rubber mounts and reconnect 87 (gray/violet) cable and 6-pin connector (red wire to rear pin). Fasten 10 MHz Standard to RF Section with two screws 0. 6. Replace All YTO Loop. Replace three screws removed in step 2 and reconnect cable connector 0. 7. Replace RF Section bottom cover and reconnect ac line cords. REAR (2 PLACE 1 a Figure 1.
HP Part Number 50624916 A22 10 MHz Frequency Standard Reference Designation HP Part Number C c Qt! - Description Mfr Code Mfr Part Number A22 5062-1916 E 1 10 MHz FREQUENCY STANDARD ASSEMBLY (SERIAL PREFIX: 2728~) 2848C 5062-1916 A22Al 5062-1909 7 1 28480 5062-1909 A22AlCl A22AlC2 A22AlCRl A22AlJl 0180-2205 0180-0197 1901-0518 1251-2035 3 a a 9 1 1 1 1 BOARD ASSEMBLY, 10 MHz FREQUENCY STANDARD REGULATOR (SERIAL NUMBERS: 2728~04255-2747~05706) CAPACITOR-FXD .
Jl A22Al 1 0 M H z F R E Q U E N C Y S T A N D A R D R E G U L A T O R , C O M P O N E N T L O C A T I O N 5062-l 909 Jl A22Al 1 0 M H z F R E Q U E N C Y S T A N D A R D R E G U L A T O R , C O M P O N E N T L O C A T I O N 5062-4837 A22Al Frequency Standard Regulator Component Locations, 5062-1909, 5062-4837
RF SECTION y - d - - - - - , - - - - - -- - - - - m Il > Is s EN 7 B s Y2 ccn is z. z zE “Z0” ff s3 a c. c) 0 -. fE i; 3 i I I ’ A 2 2 1OMHz F R E Q U E N C Y S T A N D A R D A S S E M B L Y 5 0 6 2 - 1 9 1 6 ( S E R I A L P R E F I X : 2728~) I I A22Al 1 OMHi -F~U:iCYfiiD~ -RiG?O:i 5 0 6 2 - 1 9 0 9 ( S E R I A L NUMBERS:2728A04255I 2747A05706) ; 5 0 6 2 - 4 8 3 7 ( S E R I A L NUMBERS:2747A05707 , AND ABOVE) -^.
HP Part Number 85660-60041 A23 Motherboard Reference Designation H P Part C Number D Qty Description Mfr Code Mfr Part Number A23 85660-60041 7 1 BOARD ASSEMBLY, MOTHERBOARD (SERIAL PREFIX: 2410A-2950A) 28480 85660-60041 A23Cl 0180-0452 8 1 28480 0180-0452 A23C2 0180-0454 0 1 28480 0180-0454 A23C3 0180-0453 9 1 28480 0180-0453 A23C4 0180-2798 9 1 28480 0180-2798 A23C5 0160-3879 7 1 CAPACITOR-FXD .
HP Part Number 85660-60041 A23 Motherboard Reference Designation HP Part Number C D 31 - Mfr Code Description A23MP15 2200-0111 2 1c SCREW SM440 .500 PNPD (MUST BE ORDERED SEPARATELY) INSULATOR, TRANSISTOR TO-3ADH (MUST BE ORDERED SEPARATELY) SCREW SM1032 .312 PNPD (MUST BE ORDERED SEPARATELY) A23MP16 0340-1114 1 5 A23MP17 2680-0129 8 8 A23Pl A23P2 A23P3 A23P4 A23P7 1251-0600 1251-0600 1251-0600 1251-0600 0360-1788 0 0 0 0 7 1 1 1 1 1 CONNECTOR-SGL CONT PIN 1.
HP Part Number 85660-60041 A23 Motherboard *‘- raft - - ’ C nr Number D Reference 1 Designation A23XA8 t I Qt C 1251-2026 8 1251-2035 1251-2026 1251-2035 1251-2035 1251-2035 9 ~ 8 9 9 9 A23XAl OA6 A23XAlOA7 A23XAlOA8 A23XA12Pl A23XA12P2 1251-2035 1251-2026 1251-2026 1251-7312 1251-2026 A23XA12P3 A23XA15Pl A23XA15P2 A23XA15P3 A23XA16Pl A23XAlOAl A23XAlOA2 A23XAlOA3 A23XAl OA4 A23XAlOA5 I 1 1 1 1 1 1 I I Description Y I --.
HP Part Number 85660-60368 A23 Motherboard Reference Designation HP Part C Number D Qty Description Mfr Code Mfr Part Number A23 85660-60368 1 1 BOARD ASSEMBLY, MOTHERBOARD (SERIAL PREFIX: 3001~) 28480 85660-60368 A23Cl A23C2 0180-0452 0180-0454 8 0 1 1 28480 28480 0180-0452 0180-0454 A23C3 0180-0453 9 1 CAPACITOR-FXD .
HP Part Number 85660-60368 A23 Motherboard Reference Designation HP Part Number 2 0 mY - A23MP15 2200-0111 2 A23MP16 0340-1114 1 A23MP17 2680-0129 8 A23Pl A23P2 1251-0600 1251-0600 0 0 A23P3 A23P4 A23P7 A23P8 A23P9 1251-0600 1251-0600 3360-1788 3360-1788 3360-1788 0 0 7 7 7 A23Ql 1854-0618 8 1 A2342 1854-0294 0 1 A23Q3 1854-0618 8 1 A2394 1854-0679 1 1 A23Rl A23R2 A23R3 A23R4 A23R5 3757-0421 1687-3321 3683-7515 3686-7525 3683-2225 4 0 4 2 3 A23R6 A23R7 A23R8 A23R9 A23RlO
HP Part Number 85660-60368 A23 Motherboard Reference Designation HP Part Number C D at) - Mfr Code Description A23W6 3120-2804 0 1 26-PIN CABLE ASSEMBLY (MUST BE ORDERED SEPARATELY) 50-PIN CABLE ASSEMBLY (MUST BE ORDERED SEPARATELY) A23W7 3120-2802 8 1 A23XA8 A23XAlOAl A23XAlDA2 A23XAlOA3 A23XAlOA4 1251-2026 L251-2035 1251-2026 1251-2035 1251-2035 8 9 8 9 9 1 1 1 1 1 CONNECTOR-PC CONNECTOR-PC CONNECTOR-PC CONNECTOR-PC CONNECTOR-PC EDGE EDGE EDGE EDGE EDGE 18-CONT/ROW 2-ROWS 15-CONT/ROW
c- I 1 1 J1 I(A23~6) I - I - XAl8 I [J31 (AllA2W2) FRONT 1 XAlOA3 1 1 XA10A4 1 1 XA10A5 j 1 XAIOAG 1 ) XAlOA7 1 1 XAIOAB ] * LOADED FOR OPTION 400 (A22Wl) J 4 (A:+3:; J’S (A23W3) 1 25 00J7 (A23W4) XA21 1 REAR r-Js-7 [ 1 XA15P3 1 1 XA15P2 1 XAl6P2 1 1 XAl6Pl 1 XAlZP3 ) 1 XAlZP2 ] L @23w72_ ( XAlZPl (400Hz ) O N L Y L7 I N D I C A T E S C O M P O N E N T O N R E V E R S E S I D E A23 Motherboard Component Locations, 85660-60041 J
I 1 1 Jl i(A23W6) I - 1 - r-lI XA7A5P 1 I ’ m m XA17 FRONT 1 XA10A3 ] ( XA10A4 1 [ XAlOA5 1 1 XAlOA6 1 1 XAlOA7 1 1 XAlOAB ] * LOADED FOR OPTION 400 I I I (A22Wl) m REAR r-j7-7 1 XA15P3 j 1 XA15P2 1 L XA16PZ 1 1 XAIGPI 1 [ XA12P3 ] j XA12P2 1 L @23w7) J 1 XAlZPl 1 (400Hz) O N L Y -7 I N D I C A T E S C O M P O N E N T O N R E V E R S E S I D E A23 Motherboard Component Locations, 85660-60368 I
( P / O A23W7) J8 XAlSPl A23 Motherboard Instrument BUS, Interconnect Diagram
General Parts Listing Introduction This chapter contains information on ordering replacement parts and assemblies. The parts lists document all assembly versions up to the time that the manual is printed. Table 1 lists reference designations, abbreviations, and value multipliers used in the parts lists. Table 2 lists the names and addresses that correspond to the manufacturer code numbers in the parts lists.
Direct Mail-Order System Within the USA, Hewlett-Packard can supply parts through a direct mail-order system. Advantages of using the system are as follows: 1. Direct ordering and shipment from the Hewlett-Packard Parts Center in Mountain View, California. 2. No maximum or minimum quantity requirement on any mail order. (There is a minimum-order quantity imposed on orders made through the Hewlett-Packard Sales and Service Offices when the orders require billing and invoicing.) 3. Prepaid transportation.
Table 1.
Table 1.
Table 1.
Table 1. Reference Designations, Abbreviations, and Multipliers (4 of 4) ABBREVIATIONS U Microcandela Microfarad Microhenry Microliter, UCD UF UH UL Y VAR Variable VDC Volts-Direct Current Underwriters’ Laboratories, Inc.
Table 2.
Table 2. Manufacturers Code List (continued) Mfr Code Manufacturer Name Address Zountr ZIP Cod 0189E 5 HI-G CO INC HARTFORD, CT us 0611 0191e i BUNKER RAM0 CORP AMPHENOL CONN DI’ BROADVILLE, IL us 6015. 01921 RCA CORP NEW YORK, NY us 1011 0192: I NYLOGRIP PRODUCTS WALTHAM, MA us 0215. 019241 ITW FASTEX DES PLAINES, IL us 60011 92662 0193S I ELPAC INC COMPONENTS DIV IRVINE, CA us 01943 HP DIV 04 SPD CABLES 64 PALO ALTO, CA us 9430‘ 01953 PALO ALTO, CA us 9430.
Table 2.
Table 2. Manufacturers Code List (continued) Mfr Code Manufacturer Name Address ZIP Code 02928 VISHAY INTERTECHNOLOGY INC MALVERN, PA us 1935 02937 VOLTRONICS CORP HANOVER, NJ us 07931 02946 DUPONT E I DE NEMOURS & CO WILMINGTON, DE us 1986 02995 MEPCO/CENTRALAB INC RIVIERA, FL us 3340.
Table 2.
Table 2.
Table 2.
Table 2.
Table 2.
Table 2.
I PLUG TYPE * 250V 0PE% 0 250V 250V 0 CABLE HP PART NUMBER I PLUG DESCRIPTION CABLE LENGTH CM (INCHES) CABLE COLOR 250v 8120-1351 Stroight**BS1363A 229 (90) Mint Gray Great Britain, 90” 229 (90) Mint Gray Cyprus, N i g e r i a Rhodesia, Singapore, So.
RF Section Assemblies Reference Designator HP Part Number CD Qty A5 85660-60258 3 1 FRONT PANEL ASSEMBLY (INCLUDES A5Al KEYBOARD AND A5A2 ROTARY PULSE GENERATOR) (SERIAL NUMBER PREFIXES: 2516A AND ABOVE) (NOT AVAILABLE FOR FIELD REPLACEMENT) 28480 85660-60251 A5 85660-60232 3 1 FRONT PANEL ASSEMBLY (INCLUDES A5Al KEYBOARD AND A5A2 ROTARY PULSE GENERATOR)(SERIAL NUMBER PREFIXES: 2410~-25llA) (NOT AVAILABLE FOR FIELD REPLACEMENT) 28480 85660-6023: A5Al 85660-60210 2 1 BOARD ASSEMBLY, KEYBO
Reference Designatol HP Part Number ZD A6A9 8566CL60226 0 A6A9Al 8566CL6020; A6AlO RF Section Assemblies (continued) --r at> - Descriptiou Mfr Code Mfr Part Number 1 PHASE LOCK ASSEMBLY (INCLUDES A6A9Al (PART OF A6A9 PHASE LOCK ASSEMBLY. MAY NOT BE ORDERED SEPARATELY.) 28480 35660-6022 2 1 BOARD ASSEMBLY, PHASE LOCK (SERIAL NUMBER PREFIXES: 241oA-2503A) (PART OF A6A9 PHASE LOCK ASSEMBLY. MAY NOT BE ORDERED SEPARATELY.
HP Part Number 3 - as - A7A4A1 85660-60091 6 2 1 A7A4A2 85660-60261 6 8 A7A4A2 85660-6023! 9 A7A4A2 - RF Section Assemblies (continued) Mfr Codf Mfr Pari t Number M/N VCO ASSEMBLY (INCLUDES A7A4AlAl OSCILLATOR ASSEMBLY AND A7A4AlA2 BOARD ASSEMBLY) 2848C 35660-6005 I6 1 BOARD ASSEMBLY, M/N OUTPUT (SERIAL NUMBER PREFIXES: 2611A AND ABOVE) 2848C 35660-6026 i6 5 1 BOARD ASSEMBLY, M/N OUTPUT (SERIAL NUMBER PREFIXES: 2503A-2607A) 2848C 35660-6023 19 85660-6019: 2 9 1 BOARD ASSEMBLY,
Reference Designato HP Part Number - x Qt: - - RF Section Assemblies (continued) Description Mfr Codt Mfr Part Number 85660-6012: AllA 8566@6012< 6 1 BOARD ASSEMBLY, INTERCONNECT, YTO LOOP 2848C AllA 85660-6021: 5 1 YIG-TUNED OSCILLATOR (YTO) WITH A20U8 COMPENSATION PACKAGE 2848C 85660-6021: AllA 6566CL6021‘ 6 1 REBUILT YIG-TUNED OSCILLATOR (YTO) WITH A20U8 COMPENSATION PACKAGE 28480 85660-60214 411A3 50867314 0 1 YIG-TUNED OSCILLATOR(YT0) UNCOMPENSATED (UNCOMPENSATED YTO IS NOT
- RF Section Assemblies (continued) - 20 - A22 5062-1916 6 1 10 MHZ FREQUENCY STANDARD ASSEMBLY (SERIAL NUMBER PREFIXES: 2728A AND ABOVE) 2848C 5062-1916 A22 85660-60046 2 1 10 MHZ FREQUENCY STANDARD (SERIAL NUMBER PREFIXES: 2410A-2637A) (OBSOLETE. ORDER HP PART NUMBER 5062-1916 FOR REPLACEMENT.) 2848C 85660-60046 A23 85660-60368 1 1 BOARD ASSEMBLY, MOTHERBOARD (SERIAL NUMBER PREFIXES: 3001A AND ABOVE) 2848C 85660X.
RF Section Cables HP Part Number CI - Qt: - Wl 85660-6006t 6 1 CABLE ASSEMBLY, COAX 81, A6A3 LAST CONV TO REAR PANEL JlPl 2848f 1 85660-6006f w2 8566@6007: 5 1 CABLE ASSEMBLY, COAX 85, A7A2 100 MHZ VCXO TO A6A9 PHASE LOCK 2848( I 85660-6007: w3 95661X6006: 3 1 CABLE ASSEMBLY, COAX 82, A6A12 YTX DRIVER TO REAR PANEL J4 (SWEEP + TUNE) 2848( I 85660-6006: w4 5566G6007t 8 1 CABLE ASSEMBLY, COAX 9, A7Al REFERENCE PHASE DETECTOR TO AlOA7 PLL2 DIVIDER 2848(I iB5660-6007t w5 55660-6007:
RF Section Cables (continued) HP Part Number z’r - a: - A6W5 85660-20071 4 1 CABLE ASSEMBLY, COAX A6A8 YTX TO/FROM A6A5 ACLU 28481 0 85660-2007s A6W6 85660-2007' 5 1 CABLE ASSEMBLY, COAX AT2 3DB ATTENUATOR TO A6A5 ACLU (YTO LOOP OUT) 28481 0 85660-2007 A6W7 85660-2008: 2 1 CABLE ASSEMBLY, COAX A6A5 ACLU TO A6A6 1ST CONVERTER (3.6 - 6.
Reference Designator HP Part Number x - 3: - RF Section Cables (continued) Description Mfr Code Mfr Part Number A7A2Wl 8566CL6008 6 1 CABLE ASSEMBLY, COAX 96 A7A2 lo0 MHZ VCXO TO A7A3 M/N PHASE DETECTOR (400 MHZ) 2848C 85660-6008: A7A3Wl 8566&6008. 7 1 CABLE ASSEMBLY, COAX 92 A7A4A2 M/N OUTPUT TO A7A3 M/N PHASE DETECTOR (355-395 MHZ) 2848C 85660-6008: A7A3W2 85660-6008.
RF Section Cables (continued) Reference Designator HP Part Number CD Qty Description I I I Mfr Code Mfr Part Number A16Wl 1460-1489 8 1 WIREFORM (JUMPER FOR SCAN OUT) 28480 1460-1489 A22Wl 5062-1922 4 1 CABLE ASSEMBLY, HARNESS A23 MOTHERBOARD TO A22AllO MHZ FREQUENCY STANDARD 28480 5062-1922 A23Wl 85660-60070 2 1 CABLE ASSEMBLY, COAX 3 Al6 SCAN GENERATOR TO A23 MOTHERBOARD FOR A19 DAC (SCAN OUT) 28480 85660-60070 A23W2 85660-60068 8 1 CABLE ASSEMBLY, COAX 84 A23 MOTHERBOARD (F
RF Section Miscellaneous Parts nescrintion TERMINATION-COAX OUTPUT) Mfr “F” Pn.4 SMA (TERMINATES 1ST LO ATTENUATOR, 3DB (SERIAL NUMBER PREFIXES: 2532A AND ABOVE) FAN (SEE A24) FILTER CAPACITOR (SEE A23Cl) FILTER CAPACITOR (SEE A23C2) FILTER CAPACITOR (SEE A23C3) FILTER CAPACITOR (SEE A23C4) FUSE 4A 250V FAST-BLO 1.25X.25 UL IEC (FOR 100/120 VOLT OPERATION) FUSE 2A 250V SLO-BLO 1.25X.
This page intentionally left blank.
Item 1 HP Part Number CD Description Mfr Code Mfr Part Number 85660-20356 3 FRAME, FRONT, RF SECTION * 28480 85660-20356 85660-20084 4 FRAME, FRONT, RF SECTION ** 28480 85660-20084 5021-8699 0 BEZEL, FRONT * 28480 5021-8699 8568620125 8 BEZEL, FRONT ** 28480 85680-20125 8566&00113 8 PANEL, DRESS, UPPER FRONT, RF SECTION 28480 85660-00113 4 5041-8801 8 FOOT, BOTTOM 28480 5041-8801 5 8566@00112 7 PANEL, FRONT DRESS, LOWER, RF SECTION 28480 58660-00112 6 0370-3069 2 KNOB,
PLACES) ‘ED) 30 General Parts Listing
Iten 1 2 s HP Part Number CI Description Mfr Code Mfr Part Number 5021-8540 0 LOCK FOOT, LOWER RIGHT 28480 5021-8540 0515-1244 9 SCREW, METRIC 3.5 X 12 PAN HD * 28480 0515-1244 2360-0121 2 SCREW, 632, .500-IN-LG PAN HD ** 28480 0515-1232 5 SCREW, METRIC 3.5 X 8 PAN HD 28480 0515-1232 2360-0119 8 SCREW, 6-32, .
Item 1 HP Part Number 5041-8821 Description CD 2 Mfr Code FOOT, REAR 28480 Mfr Part Number 5041-8821 0515-1132 4 SCREW,METRIC,5.0XlO,FLAT HD * 28480 0515-1132 2680-0172 1 SCREW, 10-32, .
2 5 (8 PLACES) (2 PLACES) @ Q ? 7 (2 PLACES) D ( 2 1 w---/@ ( 2 ;uI PLACiS) P L A C E S ) (2 PLACES) w -%i (2 PLACES) (6 PLACES) (2 PLACES) wm (2 PLACES) (37 PLACES) ( 2 (2 PLACES) PEES) Figure 5.
Item HP Part Number CD 1 2360-0115 4 SCREW, MACH, 632, .312-W LG, PAN HD 28480 2360-0115 2 8566G20233 5 FRAME, REAR, RF SECTION * 28480 85660-2023 8566C20085 5 FRAME, REAR, RF SECTION ** 28480 85660-2008 3 85660-00075 1 COVER, PLASTIC, REGULATOR 28480 85660-0007 4 86701-00028 6 SPRING, FLAT (FOR COVER (3)) 28480 86701-0002, 5 8566&00115 0 FAN HOUSING BOTTOM (SERIAL NUMBERS: 2747AO5729 AND ABOVE) 28480 85660-0011.
Iten HP Part Number :I: Description Mfr Code MD Part Number 26 2360-0117 6 SCREW, MACH, 632, .375-IN LG, PAN HD 28480 27 3050-1260 6 WASHER, FLAT, NO. 6, .149-IN (FOR SCREW (26)) 28480 3050-1260 2360-0117 28 8566CLOOOO 3 DIVIDER, CENTER 28480 85660-0000: 29 2360-0116 5 SCREW, MACH, 632, .312-IN LG, 82 DEG FH 28480 2360-0116 30 1400-0053 4 CLAMP, CABLE, NYLON, .172-IN DIA, .375-IN WIDE 28480 31 D520-0137 3 SCREW, MACH, 2-56, .
This page intentionally left blank General Parts Listing 37
( 2 PI A23J8 ( 1 1 P L A C E S ) @, “ill,@ ( 4 P L A C E S ) !!&yj-j;im ( 6 P L A C E S ) 24 0’ (2 PL (8 PLACES (4 PLACES) (2 PLACES) Figure 6.
Item HP Part Number CD Description 4 METRIC Mfr Code 6 X FLAT SPCL HD * Mfr Part Number 0515-1331 5 SCREW, 2510-0195 9 SCREW, 8-32 2 2680-0129 8 SCREW, MACH,10-21, .312-IN PAN LG, 3 2190-0011 8 28480 2190-0011 28480 3050-0105 1 .375-IN-LG, 28480 0515-1331 100 FLAT DEG HD ** 28480 2510-0195 28480 HD 2680-0129 4 2200-0155 4 WASHER, LOCK, INTERNAL TOOTH (FOR SCREW (2)) 1.0 PAN HD SCREW, MACH.440 IN LG 5 3050-0105 6 WASHER, FLAT NO.
Item HP Part CD Number Description Mfr Mfr Par Code Number 1 5041-0706 6 KEY, Czj 28480 5041-07Of 2 5041-0712 4 KEY, k-j 28480 5041-0711 3 5041-0938 6 KEY, CPEAK SEARCH) 28480 4 5041-0716 8 KEY, @ 28480 5041-0716 5 5041-0692 9 KEY, loFF) 28480 5041-0692 6 5041-0717 9 KEY, m 28480 5041-0717 7 5041-0698 5 KEY, (j-1 28480 5041-0698 8 0370-3069 2 KNOB, ROUND, RPG, DATA CONTROL 28480 0370-3069 9 5041-0725 9 KEY, [jj 28480 5041-0725 10 5041-0673 6 KEY, [CENTER FR
Item HP Part Number CD Description 18 5041-0750 0 KEY,@ 28480 19 5041-0728 2 KEY, MHz -dBm set 28480 5041-0728 20 5041-0729 3 KEY, kHz mV msec 28480 5041-0729 21 5041-0828 3 KEY, @ 28480 5041-0828 22 5041-0730 6 KEY, [Hz] 28480 5041-0730 23 5041-0757 7 KEY, (BACK SPACE_) 28480 5041-0757 14 5041-0827 2 KEY, @ 28480 5041-0827 25 5041-0755 5 KEY, 0 28480 5041-0755 26 5041-0826 1 KEY,@ 28480 5041-0826 27 5041-0754 4 KEY,@ 28480 5041-0754 28 5041-0669 0 KE
A5Al KEYBOARD (14 PLACES) 01 A5A2 (RPG) ASAlP A5AlJl A5DS 1 STANDBY) (3 PLACES) Description CD Mfr Code Mfr Part Number Item HP Part Number 1 2200-0103 2 SCREW, MACH, 4-40, .
Item HP Part Number CD A6J3 8629&60005 7 CONNECTOR ASSEMBLY (TYPE N) 28480 86290-60005 1 1250-1577 0 BODY: RF CONNECTOR (TYPE N) 02660 131-150 2 1250-0915 8 CONTACT: RF CONNECTOR (TYPE N) 02660 131-149 3 5040-0306 0 INSULATOR 28480 5040-0306 4 0855520093 5 CENTER CONDUCTOR 28480 08555-20093 5 08555-20094 6 BODY: BULKHEAD 28480 08555-20094 6 08761-2027 4 INSULATOR 28480 08761-2027 7 2190-0104 0 WASHER: LOCK 0.
Major Assembly and Component Locations Major Assembly and Component Locations Assembly Location ACLU Controller Coupler/Isolator/Amplifier (CIA) A6A5 Al5 AllAl Digital Analog Converter (DAC) A19 FM Coil Driver Fan First Converter Front Panel Front Panel Interface Interconnect Keyboard A21 A24 A6A6 A5 Al2 AllA A5Al Last Converter Line Module M/N Output A6A3 A9 h7A4 M/N Phase Detector Assembly Location Phase Lock Loop 2 Discriminator Phase Lock Loop 2 Divider AlOA8 AlOA7 Phase Lock Loop 2 Phase
A24 A23C4 A23C2 / (-4OV) , A23Cl (-1ov A 23W5 A23 ‘MOTHERBOARD . A23W6 \ A6A13 RF MODULE MOTHERBOARD A23W7 AiA6 FIRST CONVERTER Figure 1.
A24 Al7 THROUGH A21 10 MHz FREQUENCY STANDARD A23C2 A23C3 A23C4 (-4OV) (+ZOv) (+5v) A23C 1 (-IOV) \ Al 1 RECTlFlEd M/N-REFEREN;; TRANSFORM:; R F MOD”;: A6J5 A6J4 A6J2 I N’:“T 0”t;“T ;uSfP:? C A L A6Rl AMPTD CAL A%PUT A5A2 RPG A23W7 A23W5 / A6J3 RF INPUT A5A 1 KEYBOARD \ ASSWI STANDBY/ON Figure 2.
Al8 A19 A20 A21 A7A2 A7A3 A7A4 .i,!j&!-,~li A l 6 ,A12 A7A 1 A22 Al IA2 A6A12 Al 1 A l 1Al A6All Al IA7 A6AlO A10A8 A6A9 AlOA7 AlOA6 A6A3 A6A4 A6A7 AlOAl AlOA2 AlOA3 Figure 3.
Table 1-2. Hewlett-Packard Sales and Service Offices US FIELD OPERATIONS HEADQUARTERS EUROPEAN OPERATION HEADQUARTERS INTERCON OPERATIONS HEADQUARTERS Kewlett-Packard Company 19320 Pruneridge Avenue ICupertino, CA 95014, USA I(408) 973-1919 Hewlett-Packard S.A. 150, Route du Nant-d’Avri1 1217 Meyrin 2/Geneva Switzerland (41 22) 780.8111 Hewlett-Packard Company 3495 Deer Creek Rd. Palo Alto, California 94304-1316 (415) 857-5027 ,California Australia France Hewlett-Packard Co.
HEWLETT PACKARD HP Part No.
