MP1763C Pulse Pattern Generator Operation Manual (Function/Operation) Ninth Edition For safety and warning information, please read this manual before attempting to use the equipment. Keep this manual with the equipment. ANRITSU CORPORATION Document No.: M-W1848AE-9.
Safety Symbols To prevent the risk of personal injury or loss related to equipment malfunction, Anritsu Corporation uses the following safety symbols to indicate safety-related information. Ensure that you clearly understand the meanings of the symbols BEFORE using the equipment. Some or all of the following symbols may be used on all Anritsu equipment. In addition, there may be other labels attached to products that are not shown in the diagrams in this manual.
For Safety WARNING 1. ALWAYS refer to the operation manual when working near locations at which the alert mark shown on the left is attached. If the advice in the operation manual is not followed there is a risk of personal injury or reduced equipment performance. The alert mark shown on the left may also be used with other marks and descriptions to indicate other dangers. 2.
For Safety WARNING Repair 4. This equipment cannot be repaired by the operator. DO NOT attempt to remove the equipment covers or unit covers or to disassemble internal components. Only qualified service personnel with a knowledge of electrical fire and shock hazards should service this equipment. There are high-voltage parts in this equipment presenting a risk of severe injury or fatal electric shock to untrained personnel. In addition, there is a risk of damage to precision components. Calibration 5.
For Safety CAUTION Fuse Replacement 1. Always remove the mains power cable from the power outlet before replacing blown fuses. There is a risk of electric shock if fuses are replaced with the power cable connected. Always use new fuses of the type and rating specified on the rear panel of the instrument. There is a risk of fire if a fuse of a different rating is used. T6.3A indicates a time-lag fuse. Cleaning 2. Keep the power supply and cooling fan free of dust. • Clean the power inlet regularly.
For Safety CAUTION Replacing Memory Back-up Battery This equipment uses a Poly-carbomonofluoride lithium battery to backup the memory. This battery must be replaced by service personnel when it has reached the end of its useful life; contact the Anritsu sales section or your nearest representative. Note: The battery used in this equipment has a maximum useful life of 7 years. It should be replaced before this period has elapsed.
Equipment Certificate Anritsu Corporation certifies that this equipment was tested before shipment using calibrated measuring instruments with direct traceability to public testing organizations recognized by national research laboratories, including the National Institute of Advanced Industrial Science and Technology, and the National Institute of Information and Communications Technology, and was found to meet the published specifications.
Notes On Export Management This product and its manuals may require an Export License/Approval by the Government of the product's country of origin for re-export from your country. Before re-exporting the product or manuals, please contact us to confirm whether they are export-controlled items or not. When you dispose of export-controlled items, the products/manuals need to be broken/shredded so as not to be unlawfully used for military purpose.
Crossed-out Wheeled Bin Symbol Equipment marked with the Crossed-out Wheeled Bin Symbol complies with council directive 2002/96/EC (the “WEEE Directive”) in European Union. For Products placed on the EU market after August 13, 2005, please contact your local Anritsu representative at the end of the product's useful life to arrange disposal in accordance with your initial contract and the local law.
CE Conformity Marking Anritsu affixes the CE Conformity marking on the following product(s) in accordance with the Council Directive 93/68/EEC to indicate that they conform to the EMC and LVD directive of the European Union (EU). CE marking 1. Product Model Model: MP1763C Pulse Pattern Generator 2. Applied Directive EMC: LVD: Council Directive 89/336/EEC Council Directive 73/23/EEC 3.
C-tick Conformity Marking Anritsu affixes the C-tick marking on the following product(s) in accordance with the regulation to indicate that they conform to the EMC framework of Australia/New Zealand. C-tick marking 1. Product Model Model: MP1763C Pulse Pattern Generator 2.
Power Line Fuse Protection For safety, Anritsu products have either one or two fuses in the AC power lines as requested by the customer when ordering. Single fuse: A fuse is inserted in one of the AC power lines. Double fuse: A fuse is inserted in each of the AC power lines.
Composition of MP1763C Operation Manuals The MP1763C Pulse Pattern Generator operation manuals are composed of the following two documents. Use them properly according to the usage purpose. Function and Operation Part Composition of MP1763C Operation Manuals GPIB Programming Function and Operation Part: These outline the MP1763C, and describes the preparations before use, the panels, specifications, performances, functions, and operation procedures. GPIB Programming: The MP1763C GPIB conforms to IEEE488.
Title of Contents For Safety ....................................................................................................................... iii SECTION 1 GENERAL ................................................................................................... 1-1 1.1 Features ......................................................................................................................... 1.2 Specifications .............................................................................
4.4.1 File save ........................................................................................................... 4.4.2 File recall ......................................................................................................... 4.4.3 Disk formatting ............................................................................................... 4.4.4 File deletion ..................................................................................................... 4.4.5 Error messages ...
IV.
SECTION 1 GENERAL 1.1 Features The MP1763C Pulse Pattern Generator has two data output channels (DATA and DATA) and three clock output channels (CLOCK1, CLOCK1, CLOCK2). The MP1763C is used with the MP1764A/C Error Detector to test high-speed digital communication systems and high-speed semiconductors. It operates over the 50 MHz to 12.5 GHz frequency range and generates four pulse patterns: alternate, programmable, zero substitution, and pseudorandom.
Section 1 GENERAL 1.2 Specifications Operation frequency range Pattern generation Internal Clock (OPTION 01) 0.05 to 12.5 GHz External Clock 0.05 to 12.5 GHz PRBS 2N -1 (N=7,9,11,15,20,23,31) Pattern length Mark ratio 1/2,1/4,1/8,0/8 (1/2,3/4,7/8,8/8 also possible by logic inversion) Number of “AND bit” shifts when setting mark ratio 1 bit or 3 bits (Selectable using rear panel DIP switch) Continuous 0 pattern can be inserted up to pattern length -1.
1.
Section 1 GENERAL DATA output Output phase Output waveform NRZ Number of outputs DATA, DATA 2 systems independence Amplitude 0.25 to 2.0 Vp-p/Step 2 mV Setting error: ±15 % or ±100 mV, whichever is larger Offset voltage –2.0 to 2.0 V (VOH ) /Step 1 mV Setting error: ±15 % or ±15 % of Amplitude , and±100 mV, whichever is larger DATA/DATA Tracking Amplitude and offset of DATA and DATA can be set to the same value.
1.2 Specifications 1/8 output Number of output 8 data outputs, 1 clock output Data polarity Same as 1/1 DATA Output level ECL (H: –0.9 ±0.25 V, L: –1.75 ±0.25 V) Rise / fall time 300 ps or less (20-80 %) Pattern jitter 100 ps or less (p-p) Waveform distortion 15 % or less Skew 150 ps or less (relative to falling edge of 1/8 clock) Output bit rate 1/8 of fundamental frequency Load impedance 50 Ω Connector SMA Sync.
Section 1 GENERAL Error Disable input Error ON/OFF controlled by external input signal Error addition Error rate can be selected over this range Input level 0/-1 V Input impedance 50 Ω Connector SMA External Gating input Parameter memory Display Output data control by external signal Data output “0” “0” Minimum pulse width 1 Fundamental frequency Input level 0/-1 V Input impedance 50 Ω Connector SMA Medium 3.
1.2 Specifications Option-01 Name Internal synthesizer Frequency range 0.05 to 12.5 GHz Output level 0.5 to 2.3 Vp-p Resolution 1 kHz/1 MHz (switchable) Frequency accuracy 1ppm ( ∗ When synchronized with external signal, accuracy is determined by external signal.) Reference signal 10 MHz (internal/external switchable) Signal purity SSB phase noise (10 kHz offset, bandwidth 1 Hz) 0.05 ≦ Freq. < 2.0 GHz –90 dBc 2.0 ≦ Freq. < 4.0 GHz –85 dBc 4.0 ≦ Freq. < 8.0 GHz –80 dBc 8.0 ≦ Freq.
Section 1 GENERAL 1.3 Composition The standard composition of the MP1763C Pulse Pattern Generator is shown in Table 1.3-1. Table 1.3-1 MP1763C Standard Composition Item Main Unit Options No. MP1763C MP1763C-01 MP1763C-03 Accessories J0500A J0672D Name Pulse Pattern Generator Internal synthesizer 1/4 speed output Semi-rigid cable (50 cm) Semi-rigid cable (7 cm) Qty 1 (1) (1) 2 (1) J0672F J0496 J0693A Semi-rigid cable (10 cm) APC-3.
SECTION 2 PREPARATIONS 2.1 Environmental Conditions of Installation Site Do not use and store the instrument in the following locations: • where vibrations are severe. • where it is damp or dusty. • where there is exposure to direct sunlight. • where there is exposure to active gases. Long-term storage at high temperatures will shorten the life of the internal battery. Store the instrument below normal room temperature.
Section 2 PREPARATIONS 2.3 Power Connection This section describes the procedures for supplying power. 2.3.1 Power Requirements For normal operation of the instrument, observe the power voltage range described below. Voltage range 85 to 132 V 170 to 264 V Frequency 47.5 to 63 Hz 47.5 to 63 Hz Changeover between 100 and 200 V systems is made automatically. CAUTION Supplying power exceeding the above range may result in electrical shock, fire, failure, or malfunction. 2.3.
2.4 Damage Prevention Measures • • Do not apply an excessive voltage when inputting the signal to this instrument. The circuits may be destroyed. Terminate the output with 50 Ω. Do not feed current to the output. The load must be a 50 Ω pure resistor terminated at ground potential. • Before connecting the input and output terminals, ground the other equipment (including test circuits) with a ground wire.
Section 2 PREPARATIONS 2-4 .
SECTION 3 DESCRIPTION OF PANELS AND CONNECTORS 3-1
8 7 PULSE PATTERN GENERATOR MP1763C 0.05 - 12.5GHz PATTERN INTERNAL CLOCK (OPTION.01) FREQUENCY MHz kMz TUNING OUTPUT PRBS MARK RATIO PRBS / ZERO SUBST LOGIC PATTERN POS ALTNDATA Z.
1 2 Power switch LOCAL key When , the power is turned on and the LED goes on. When , the power is turned off. Switches from the GPIB REMOTE mode (LED lit) to the LOCAl (key operation possible) mode. In GPIB REMOTE mode, all the keys other than the power switch and LOCAL key are ineffective. 3 PANEL LOCK key Panel lock (LED lit) disables all the keys other than the POWER switch and the PANEL LOCK key. 4 SYNC OUTPUT keys Select the type of SYNC OUTPUT. 1/64 CLOCK: Outputs a CLOCK divided by 64.
CAUTION FUNCTION ITEMS AND BIT SHIFT COUNT FOR THE MARK RATIO SW 1 EXTERNA ERROR INJECTION 2 FLOPPY DISK FORMAT TYPE 3 ALTERNATE PATTERN A/B SWITCHING TIMING 4 BIT SHIFT NUMBER FOR ALTERNATE A/B SELECT TIMING 5, 6 SPECIFICATION 0 : 1 BIT 1 : 3 BIT 0 : OFF 1 : ON 0 : 1440kB/720kB 1 : 1232kB/640kB 0 : INTERNAL 1 : EXTERNAL SW6 SW5 0 0 : 0BIT 0 1 : 1BIT 1 0 : 2BIT 1 1 : 3BIT 22 Nameplate ∼LINE INPUT 47.
5 4 3 2 1 ø ø ø ø ø . 10 GPIB address Dip switch SYSTEM CONTROL switch Sets the address when the instrument is remotely controlled by GPIB. It is usually set to When this switch is set to ' ON ' , this instrument control other one. 11 GPIB connector Connector for GPIB cable. (The cable is connected when the instrument is remotely controlled by GPIB.) 12 FUNCTION Dip switch It is possible to select functions noted rear panel.
Section 3 DESCRIPTION OF PANELS AND CONNECTORS 3-6 .
SECTION 4 OPERATING INSTRUCTIONS 4.1 Internal Clock Generator Frequency Setting (OPTION 01) This section sets the frequency of the internal clock generator when the CLOCK generator (OPTION 01) is used. INTERNAL CLOCK (OPTION.01) FREQUENCY MHz kMz TUNING 3 RESOLUTION 1 2 4 1 TUNING ON/OFF The frequency can be changed only when the TUNING LAMP is lit. 2 RESOLUTION Used when setting the frequency down to the kHz order. Pressing this key again returns the setting to the MHz order.
Section 4 OPERATING INSTRUCTIONS ③ ① ② INTERNAL CLOCK (OPTION.01) ① Press the TUNING key. The TUNING lamp lights. (The frequency can be changed only when the TUNING lamp is lit.) At this time, the figure of the digit that can currently be changed blinks. FREQUENCY MHz kMz TUNING RESOLUTION ② Press the RESOLUTION key and select whether the frequency is to be set in MHz or kHz. When the frequency can be set down to kHz, an 8-digit number is displayed. (Five digits for MHz.
4.2 Generation Pattern Setting 4.2 Generation Pattern Setting PATTERN 1 PATTERN POS ALTNDATA Z.
Section 4 OPERATING INSTRUCTIONS 4.2.1 Logic modification ① The logic of the set pattern is changed in positive → negative → positive order each time the LOGIC key is pressed. (The set logic is indicated by lighting of a lamp.) PATTERN PRBS MARK RATIO PRBS / ZERO SUBST LOGIC PATTERN POS ALTNDATA Z.S PRBS 7 9 11 NEG 2N 15 20 23 31 2N- 1 0/8 1/8 1/4 1/2 8/8 7/8 3/4 1/2 ① 4.2.2 Alternate pattern setting ① Select ALTN with the ① (DATA, Z.S, and PRBS are also selected with these keys.
4.2 Generation Pattern Setting Change the BIT value with the button below the LED. When LOGIC is positive, lighting of the LED indicates high level. BIT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 GUARD ALL 0 PRESET PAGE 1 0 1 PATTERN TRACKING LOADING Used the PRESET ALL or PAGE key when changing DATA collectively. PAGE 0 or 1 ALL 0 or 1 All BITs of the displayed PAGE are set to 0 or 1. Pressing this key while holding down the GUARD key sets all BITs specified by DATA LENGTH to 0 or 1.
Section 4 OPERATING INSTRUCTIONS 4.2.3 DATA pattern setting ① Select DATA with the PATTERN LOGIC PATTERN PRBS / ZERO SUBST ALTNDATA Z.S PRBS 7 POS 9 11 15 NEG 2N 20 23 keys. PRBS MARK RATIO 31 0/8 1/8 1/4 1/2 8/8 2N - 1 7/8 3/4 1/2 ① DATA LENGTH/ZERO SUBST DATA LENGTH ZERO SUBST LENGTH A / B LOOP TIME PAGE/ LENGTH ② ② Set DATA LENGTH with the and Select the digit to be set with the PATTERN SYNC POSITION keys. keys. DISPLAY Set DATA LENGTH with the keys.
4.2 Generation Pattern Setting 4.2.4 ZERO SUBSTITUTION ① Select Z.S. with the PATTERN LOGIC PATTERN POS ALTNDATA Z.S PRBS 7 PRBS / ZERO SUBST 9 11 NEG 15 20 23 31 0/8 1/8 1/4 1/2 8/8 2N - 1 2N keys. PRBS MARK RATIO 7/8 3/4 1/2 ① PATTERN LOGIC PATTERN POS ALTNDATA Z.S PRBS 7 PRBS / ZERO SUBST 9 11 NEG 2N 15 20 23 31 PRBS MARK RATIO 0/8 1/8 2N - 1 8/8 1/4 1/2 7/8 3/4 keys. (This PRBS ② Set the 2N PATTERN with the is a pseudo PATTERN with a period of 2N.
Section 4 OPERATING INSTRUCTIONS 4.2.5 Pseudo random pattern setting ① Select PRBS with the PATTERN LOGIC POS PATTERN ALTNDATA Z.S PRBS 7 PRBS / ZERO SUBST 9 11 NEG 2N 15 20 23 keys. PRBS MARK RATIO 31 0/8 1/8 8/8 2N - 1 1/4 1/2 7/8 3/4 1/2 ① ② Set the number of PRBS steps with the PATTERN LOGIC POS PATTERN ALTNDATA Z.S PRBS 7 PRBS / ZERO SUBST 9 11 NEG 2N 15 20 2N - 1 ② 23 keys.
4.2 Generation Pattern Setting 4.2.6 ERROR addition ON 4 ERROR ADDITION(1×10 - N ) 5 6 7 8 9 SINGLE ① Press the key. The LED in the key lights. ② Select the error addition rate with the ① ON 9 ② 4 keys. To add a single error, select the right of the LED using the key. At this time, the LED does not go on. ERROR ADDITION(1×10 - N ) 5 6 7 8 9 SINGLE ③ The single error adds one error each time the key is pressed. The LED blinks each time a error is added.
Section 4 OPERATING INSTRUCTIONS 4.2.7 Tracking ① When the key is pressed, the LED inside the key lights and the instrument enters the tracking mode. BIT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 GUARD ALL 0 PRESET 1 PAGE 0 PATTERN TRACKING LOADING 1 ＊ When tracking, the MP1763C must be connected to an MP1764A/C by a GPIB. ① When the PATTERN LOADING lamp lights, the data is read and the keys are disabled. Tracking can be performed from both the transmitter and receiver.
4.2 Generation Pattern Setting 4.2.8 Pattern SYNC. position SYNC OUTPUT 1 / 64 CLOCK FIXED POSN VAR POSN Select the sync output. PATTERN SYNC When VARIABLE POSITION is selected, set the SYNC OUT position as described in the following. 1/64 CLOCK, FIXED POSITION, OR VARIABLE POSITION can be selected. 1/64 CLOCK: 1/1 CLOCK is divided by 64. FIXED POSITION: The sync pulse output fixed on page 1 of VARIABLE POSITION is generated.
Section 4 OPERATING INSTRUCTIONS When the PRBS DATA output is monitored on a sampling oscilloscope using each synchronization output, the following waveforms are shown: 1) 1/64 CLOCK Shown as an eye pattern. 2) FIXED POSN Shown as a 0 and 1 waveform. and VAR POSN ＊ At VAR POSN, the synchronization position shifts +16 (or -16) bits each time the PAGE/PATTERN SYNC POSITION value is incremented (or decremented) by 1. Example CLOCK DATA (7-step in PRBS) 1 2 3 4 5 6 Pattern SYNC.
4.3 Output Interface 4.3 Output Interface OUTPUT DATA 1 50Ω GND DATA ECL DATA ECL DISPLAY GUARD DATA/DATA TRACKING OUTPUT OFFSET ON OFF VOH VTH VOL AMPLITUDE OFFSET Vp - p V 4 3 2 CLOCK 1 DISPLAY DELAY 1/1 SPEED 1/4 SPEED (OPTION.
Section 4 OPERATING INSTRUCTIONS 4.3.1 DUMMY terminal voltage switching ① OUTPUT DATA 50Ω GND DATA ECL DATA ECL DISPLAY GUARD DATA/DATA TRACKING OUTPUT OFFSET ON OFF VOH VTH VOL AMPLITUDE OFFSET Vp - p V CLOCK 1 DISPLAY DELAY 1/1 SPEED 1/4 SPEED (OPTION.03) TIME ps BUSY CLOCK 1 AMPLITUDE 50Ω GND ECL OFFSET Vp - p V ECL When only one of the CLOCK 1 and CLOCK 1 complementary outputs is used, use the attached semirigid cable (10 cm) to connect the unused side to the DUMMY terminal.
4.3 Output Interface 4.3.2 Amplitude, offset, and delay setting ② ③ ① When you want to set front panel DATA/DATA output and CLOCK 1/CLOCK 1 output, switch to 1/1 SPEED. When you want to set rear panel 1/4 SPEED OUTPUT (OPTION), switch to 1/4 SPEED. ⑤ OUTPUT DATA 50Ω GND DATA ECL DATA ECL DISPLAY GUARD DATA/DATA TRACKING OUTPUT OFFSET ON OFF VOH VTH VOL AMPLITUDE OFFSET Vp - p V CLOCK 1 DISPLAY DELAY 1/1 SPEED 1/4 SPEED (OPTION.
Section 4 OPERATING INSTRUCTIONS ＊ When the setting of ④ is changed, the actual waveform and output do not change. Only the displayed value changes (see the figure below). OUTPUT DATA 50Ω GND DATA ECL DATA ECL DISPLAY GUARD DATA/DATA TRACKING OUTPUT OFFSET ON OFF VOH VTH VOL AMPLITUDE OFFSET Vp - p V AMPLITUDE OFFSEET 1 Vp-p 2 VOH CLOCK 1 DISPLAY DELAY 1/1 SPEED 1/4 SPEED (OPTION.
4.3 Output Interface ⑥ Set the output to ON. Note 1: When output was turned off, the actual DATA, DATA, CLOCK 1, CLOCK 1, 1/4 DATA, and 1/4 CLOCK output amplitude becomes 0Vp-p, and the offset becomes 0V. Note 2: Since the output circuit is not opened even when the output is turned off, do not apply an external voltage to the output terminals of this instrument. ⑦ Set the clock delay. CAUTION Life time of phase shifters: This equipment uses built-in phase shifters, whose average life time is as follows.
Section 4 OPERATING INSTRUCTIONS 4.3.5 Offset voltage setting range (Large amplitude) (Small amplitude) VOH VTH VOL Fig. 4.3.5-1 Offset Reference Value and Amplitude Change Note: Since the offset-voltage upper and lower limit values are limited by VOH (-2.0 V ≦ VOH ≦ +2.0 V), when VTH or VOL are set, the amplitude is limited at a certain value and may not change further. Example: If VOL is set at +1.00 V offset voltage and if there is a signal with amplitude 0.
AMPLITUDE(V) • Offset reference: VOH 2.0 1.5 1.0 0.5 0.25 -4.0 Fig. 4.3.5-2 -3.0 -2.0 -1.0 0 1.0 2.0 3.
Section 4 OPERATING INSTRUCTIONS AMPLITUDE(V) • Offset reference: VTH 2.0 1.5 1.0 0.5 0.25 -2.125 -4.0 Fig. 4.3.5-3 4-20 -3.0 1.875 -2.0 -1.0 0 1.0 2.0 3.
4.3 Output Interface AMPLITUDE(V) • Offset reference: VOL 2.0 1.5 1.0 0.5 0.25 -2.25 -4.0 Fig. 4.3.5-4 -3.0 -2.0 -1.0 0 1.75 1.0 2.0 3.
Section 4 OPERATING INSTRUCTIONS 4.4 MEMORY (Floppy Disk) MEMORY MODE DIR RECALL SAVE FILE No. DELETE RESAVE SHIFT PATT OTHERS EXIST 3 1 2 4 1 File No.
4.4 MEMORY (Floppy Disk) 4.4.1 File save ④ ③ ② MEMORY EXIST MODE DIR RECALL SAVE FILE No. DELETE RESAVE SHIFT PATT OTHERS ① Insert a formatted floppy disk (2HD, 2DD) into the floppy disk drive. (For a description of how to format a floppy disk, see section 4.4.3 “Disk formatting”.) ② Select the PATT or OTHERS mode. PATT mode: The contents set at section 4.2 are saved. OTHERS mode: Contents other than PATT are saved. ③ Light the File No. LED by pressing the DIR/File No. key.
Section 4 OPERATING INSTRUCTIONS 4.4.2 File recall ② ① ③ MEMORY EXIST MODE DIR RECALL SAVE FILE No. DELETE RESAVE SHIFT PATT OTHERS ① Insert the floppy disk into the floppy disk drive and select the DIR mode. If the floppy disk is changed, always execute a DIR command. ② Check whither there is a file on the disk by pressing the keys. If there is a file on the disk, only that file name is displayed. However, if there is no file on the disk, “– –” is displayed.
4.4 MEMORY (Floppy Disk) 4.4.4 File deletion ①⑤ ④ ③ ② MEMORY ① Insert the floppy disk into the floppy disk drive and select the file name to be deleted. ② Press the SHIFT key. MODE DIR RECALL SAVE FILE No. DELETE RESAVE SHIFT PATT OTHERS EXIST ③ Delete the file with the displayed file name by pressing the DELETE key. ⑤ (Verification) Execute a DIR command. ⑤ Verify that the file name deleted is not displayed by pressing the keys. 4.4.
Section 4 OPERATING INSTRUCTIONS 4.4.6 Floppy disk (a) Disk type The floppy disk is formatted in standard MS-DOS format provided by the MS-DOS file handler. The formatted floppy disk is data disk type. This is because the MS-DOS file handler does not copy the MS-DOS system. A system disk containing the MS-DOS system can also be used to store data. (b) Volume label A volume label is added when the floppy disk is formatted. Volume label: MP1763A This volume label is provided to identify the floppy disk.
4.5 Parameters initialization 4.5 Parameters initialization When returning the pattern type, amplitude, offset voltage, and other parameters to the factory shipment state, turn on the power switch while pressing the LOCAL key. This initializes the parameters. The initialization state is shown in Table 4.5-1. GPIB REMOTE PANEL LOCK POWER OFF ON LOCAL Table 4.5-1 Initialization State Initial setting Item FREQUENCY 12, 500 MHz TUNING ON MEMORY 00 (PTN mode, FILE NO.
Section 4 OPERATING INSTRUCTIONS 4.6 Functions of the FUNCTION Switch Table 4.6-1 lists the functions of the FUNCTION switch on the rear of the instrument. Table 4.
SECTION 5 PRINCIPLES OF OPERATION 5.1 Pseudorandom Pattern (PRBS Pattern) The principle of pseudorandom pattern generation is shown in Table 5.1-1. The pseudorandom pattern is represented by the Nth-order generation polynomial shown in Table 5.1-1. One period is 2N-1. A PRBS pattern with a 2N-1 period produces one N bits continuous “1” pattern per period. When LOGIC is set to POS (positive logic), PRBS pattern output level “1” corresponds to low level and “0” corresponds to High level.
Section 5 PRINCIPLES OF OPERATION Shift register PRBS pattern generator 1 2 3 Mark ratio 4 5 6 1/2 1/4 (1 bit shift) (See Table 5.1-1) 1/8 (1 bit shift) 1/4 (3 bits shift) 1/8 (3 bits shift) Fig. 5.
5.2 Pattern Synchronized Output Period 5.2 Pattern Synchronized Output Period 5.2.1 Pseudorandom pattern Period = 1 × (2N-1) × 128 (set frequency) N=7, 9, 11, 15, 20, 23, 31 (Where pulse width = 1 × 64, plus pulse) (set frequency) 5.2.
Section 5 PRINCIPLES OF OPERATION 5.3 Bit shift for Alternate A/B select timing A timing between Alternate pattern A/B select signal and Data output can be selected using the Dip switch on the rear of the instrument, and its selection step is one 128th of setting frequency. Data Output A B 0 bit shift A/B select signal 1 bit shift 2 bit shift 3 bit shift 3.5 × CLK × 1 128 1 CLK × 128 1 CLK × 128 CLK × 5-4 .
SECTION 6 PERFORMANCE TEST 6.1 Test Equipment • • Error detector (12.5 GHz or more measurement possible) Sampling oscilloscope (bandwidth 50 GHz or more) • Clock generator (capable of covering the 0.05 to 12.5 GHz range) * no need when OPTION 01 is installed. 6.2 Error Measurement Setup (1) Error measurement setup ERROR DETECTOR MP1762A/C 0.05 - 12.
Section 6 PERFORMANCE TEST 6.3 Test Method Connect the MP1763C DATA and CLOCK1 connectors to the error detector as shown in 6.2-(1). Set Error Free at the setting shown below. Pattern Output LOGIC POS PRBS 231-1 Mark ratio 1/2 DATA amplitude offset 0.5 Vp-p 0 Vp-p CLOCK amplitude 0.5 Vp-p offset 0.0 VOH Delay 0 ps PULSE PATTERN GENERATOR MP1763C 0.05 - 12.5GHz PATTERN INTERNAL CLOCK (OPTION.01) FREQUENCY MHz kMz TUNING PATTERN POS ALTNDATA Z.
6.5 Check Items Check the 1/8 SPEED output with the connection shown at the below. Pattern LOGIC POS PRBS 231-1 Mark ratio 1/2 Check all the outputs with the connections DATA1 → DATA2 → - - - → DATA8.
Section 6 PERFORMANCE TEST 6-4 .
SECTION 7 MAINTENANCE 7.1 Daily Maintenance • • Wipe external dirt with a cloth soaked in a diluted neutral detergent. Remove dust or specks by using a vacuum cleaner. • Periodically clean the FDD head by using a 3.5-inch head-cleaning disk. • If any loosened screws for attached parts are found, secure by using the specified tool. 7.2 Storage Precautions (1) Store the unit after removing any dirt or dust.
Section 7 MAINTENANCE 7.4 Calibration Calibration of this unit should not be performed by other than Anritsu Corporation. We recommend yearly routine calibration to maintain performance. 7.5 Disposal This equipment uses chemical compound semiconductors including arsenic and a fluoridated graphite lithium battery to back-up the memory. Be sure to follow the rules on disposal for each country and/or local government. 7-2 .
SECTION 8 TROUBLESHOOTING AND REPAIR 8.1 Before Considering Trouble If the instrument is not operating properly for some reason, check it as follows: • Power is not turned on → Plug in firmly. → Replace the fuse. → Check the set values and set them to the correct values. → Change the cable. → Retighten the connector. Is Error addition OFF ? → Set Error addition to OFF. ↓ Are the phase margin and bias margin sufficient? → Adjust so that the phase and offset are suitably cut.
Section 8 TROUBLESHOOTING AND REPAIR • Floppy disk drive is not used. Is the floppy disk normal ? → Use the normal floppy disk. ↓ Is the head of floppy disk drive dusty ? → Clean head of floppy disk drive with 3.5 inch head cleaning disk set. If the problem cannot be found from the above check items, contact the service section of Anritsu. 8.2 Fuse Replacement Turn off the power switch, then disconnect the power cable plugged into the AC power inlet.
APPENDIX A PERFORMANCE TEST REPORT SHEET Name Serial No. : MP1763C Pulse Pattern Generator : Ambient Temperature : ˚C Relative humidity : % • Output Test Conditions Criteria For Data and Clock1 50 MHz Error-free for each: Amplitude: 0.25, 2.0 Vp-p Offset: –2, 0, Results +2 VOH Mark ratio: 1/2, 1/8, 1/2 and 7/8 1 GHz Same as above 3 GHz 5 GHz Same as above Same as above 12.5 GHz Same as above For /Data and /Clock1 50 MHz Error-free for each: Amplitude: 0.25, 2.
APPENDIX A PERFORMANCE TEST REPORT SHEET A-2.
INDEX Cross point adjust ----------------------------------- 4-17 Duty adjust ------------------------------------------- 4-17 Tracking ---------------------------------------------- 4-10 Error insertion --------------------------------------- 4-9 Alternate pattern ------------------------------------ 4-4 Pseudo random pattern ---------------------------- 5-1 Zero-replacing pattern ----------------------------- 4-7 Data pattern ------------------------------------------ 4-6 Pattern synchronization output --
INDEX INDEX-2.
