Anritsu MP1764A Operation Manual
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Anritsu MP1764A Operation Manual

Anritsu MP1764A Operation Manual

Error detector
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MP1764A
Error Detector
Operation Manual
Sixteenth Edition
Read this manual before using the equipment.
Keep this manual with the equipment.
ANRITSU CORPORATION
Document No.: M-W0887AE-16.0
www.valuetronics.com

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Summary of Contents for Anritsu MP1764A

  • Page 1 MP1764A Error Detector Operation Manual Sixteenth Edition Read this manual before using the equipment. Keep this manual with the equipment. ANRITSU CORPORATION Document No.: M-W0887AE-16.0 www.valuetronics.com...

  • Page 2: Safety Symbols

    BEFORE using the equipment. Some or all of the following five symbols may not be used on all Anritsu equipment. In addition, there may be other labels attached to products which are not shown in the diagrams in this manual.

  • Page 3: For Safety

    This equipment cannot be repaired by the user. DO NOT attempt to open the cabinet or to disassemble internal parts. Only Anritsu- Repair trained service personnel or staff from your sales representative with a knowledge of electrical fire and shock hazards should service this equipment.
  • Page 4 For Safety CAUTION Before changing the fuses, ALWAYS remove the power cord from the poweroutlet and replace the blown fuses. ALWAYS use new Changing Fuse fuses of the type and rating specified on the fuse marking on the rear panel of the cabinet. ___T indicates a time-lag fuse.
  • Page 5 • Keep floppy disks away from magnetized products. Do not bend the floppy disk. Disposing of the product The MP1764A uses chemical compound semiconductor including arsenic and manganese dioxide Lithium Battery and timer including mercury. At the end of it's life, the MP1764A should be recycled or disposed properly. www.valuetronics.com...
  • Page 6 (Blank) www.valuetronics.com...

  • Page 7: Equipment Certificate

    In addition, this warranty is valid only for the original equipment purchaser. It is not transferable if the equipment is resold. Anritsu Corporation will not accept liability for equipment faults due to unforeseen and unusual circumstances, nor for faults due to mishandling by the customer.

  • Page 8: Ce Conformity Marking

    CE Marking Anritsu affix the CE Conformity Marking on the following product(s) in accordance with the Council Directive 93/68/EEC to indicate that they conform with the EMC directive of the European Union (EU). CE Conformity Marking 1. Product Name/Model Name...
  • Page 9 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.
  • Page 10 www.valuetronics.com...
  • Page 11 Title of Contents For Safety ........................SECTION 1 GENERAL ....................1.1 Features ......................... 1.2 Functions ........................1.3 Options ......................... 1.4 Composition ......................... SECTION 2 PREPARATIONS ..................2.1 Installation Site Environment ..................2.2 Safety Measures ......................2.3 Power Supply Voltage ....................2.4 Internal Battery Life .....................
  • Page 12 4.4.8 Sync detection mode ..................4-19 4.4.9 Tracking ......................4-21 4.4.10 Error analysis (Option 01) ................4-22 4.5 Error Measurement ....................... 4-23 4.5.1 ERROR RATIO measurement ................ 4-25 4.5.2 ERROR COUNT ..................... 4-26 4.5.3 ERROR INTERVAL ..................4-27 4.5.4 ERROR FREE INTERVAL ................4-28 4.5.5 CLOCK FREQUENCY ..................
  • Page 13 Frame Sync Output ...................... Error Output ........................ SECTION 6 MEASUREMENT ..................6.1 Set-up ..........................6.2 Measurement ........................ 6.3 Burst Measurement ....................... SECTION 7 PERFORMANCE CHECK ................ 7.1 When Performance Check Necessary ................7.2 Test Equipment ......................7.3 Check Method ......................7.3.1 Operating frequency ..................
  • Page 14 IV . www.valuetronics.com...
  • Page 15 The input threshold voltage (–3 V to +1.875 V) of MP1764A can be set in 1 mV steps and the input clock phase (–500 ps to +500 ps) can be set in 1 ps steps. The measurement patterns are pseudorandom (PRBS) pattern (1 period 2 –1;...
  • Page 16 SECTION 1 GENERAL 1.2 Functions Operating frequency 0.05 to 12.5 GHz Pattern length Measurement –1 (N=7, 9, 11, 15, 20, 23, 31) PRBS pattern Mark ratio 1/2, 1/4, 1/8, 0/8 (1/2, 3/4, 7/8, 8/8 possible by logic inversion) Number of AND bit 1 bit or 3 bits shifts at mark ratio (switchable by rear panel DIP switch)
  • Page 17 1.2 Functions Synchronization Normal Enabled when the measurement pattern is a zero substitution, method DATA, or alternate pattern. Frame Enabled when the measurement pattern is a zero substitution or alternate pattern, and when it is a DATA pattern and the data length is 128 bits or longer.
  • Page 18 SECTION 1 GENERAL Input/output Data input Input waveform connector Input amplitude 0.25 to 2.0 Vp-p Threshold voltage –3.000 to 1.875 V (1mV steps) Termination voltage GND / –2 V Input impedance Connector APC-3.5 Clock input Input waveform Up to 0.5 GHz: Square wave only (Duty 50%) Others : Sine wave or square wave (Duty 50%) Input amplitude...
  • Page 19 1.2 Functions TTL (LOW level at error) Input/output Output level Error output connector Pulse width 350 ns 100 ns (STRETCHED) Connector Output condition Clock loss, sync loss Alarm output Output level TTL (LOW level at alarm) Connector (*1) Output level 0 /–1 V 0.1 V Frame sync Connector...
  • Page 20 SECTION 1 GENERAL Display 7 segments, 8 digits display maximum Measured result Gating 12 segments bar graph Error : Red LED Power failure history: Orange LED Alarm Clock loss: Orange LED Clock loss history : Orange LED Sync loss : Orange LED Sync loss history : Orange LED Tracking function...
  • Page 21 1.2 Functions Table 1-1 Rear Panel FUNCTION DIP Switch Settings FUNCTION SW 1 Setting S W Function ０ １ Number of mark ratio AND bit shifts 1 bit 3 bit Clock loss processing Sync loss processing Error performance threshold selection Burst measurement Intermediate data calculation Error detection mode selection Measurement interval time selection...
  • Page 22 SECTION 1 GENERAL Table 1-2 Sector length Number of sectors Number of tracks Number Type [bytes/sector] [sectors/track] [tracks/side] of sides BIT 10 1232KB 1024 1440KB Sector length Number of sectors Number of tracks Number Type [bytes/sector] [sectors/track] [tracks/side] of sides BIT 10 640KB 720KB...
  • Page 23 *1: The two 3.5 inch floppy disks are already formatted (1,440 kB). Patterns equivalent to PRBS2 –1 (mark ratios 1/2, 1/4, and 1/8) that can be generated by the MP1601A or MP1604A Pulse Pattern Generator from Anritsu Corporation are stored on one of these disks.
  • Page 24 SECTION 1 GENERAL (Blank) 1-10 www.valuetronics.com...
  • Page 25 2.4 Internal Battery Life The MP1764A uses a lithium primary battery as the timer and memory back-up power supply. The life of this battery is 7 years or more when the instrument is stored at normal room temperature. However, since the battery life largely depends on the storage temperature, storage at high temperatures for long periods will shorten the period given above.
  • Page 26 This instrument backs up, in internal memory, the setup conditions immediately before the power is turned on , but several seconds are necessary after setup is changed. Note that if the power is turned off while internal memory is being updated, the setup state will be cleared (initialized). MP1763B    PPG MP1764A    ED www.valuetronics.com...
  • Page 27 SECTION 3 DESCRIPTION OF PANELS AND CONNECTORS www.valuetronics.com...
  • Page 28 www.valuetronics.com...
  • Page 29 MANUAL PRINT Small Large www.valuetronics.com...

  • Page 30: Rear Panel

    SECTION 3 DESCRIPTION OF PANELS AND CONNECTORS 3.2 Rear Panel www.valuetronics.com...
  • Page 31 www.valuetronics.com...
  • Page 32 SECTION 3 DESCRIPTION OF PANELS AND CONNECTORS (Blank) www.valuetronics.com...

  • Page 33: Section 4 Operation

    (See Table 4-1.) When setting a pattern, etc. that you do not want to clear, save it to FD. (See 4.6.1.) Initialization makes the MP1764A and MP1763B settings the same. Turn off the power.
  • Page 34 4.2 Internal Memory Initialization To set the MP1764A to the initial state (factory setting state), set the POWER switch to ON while pressing the LOCAL key. When the MP1764A is set to the initial state, the previously set contents are all cleared and are preset as shown in Table 4-1.
  • Page 35 4.1 Setup Table 4-1 Panel and Internal Circuits Initial State Item Panel Internal circuit DATA TERM INPUT THRESHOLD value –0.500 CLOCK TERM DELAY TIME value BUSY POLARITY AUTO SEARCH PATTERN LOGIC PATTERN mode PRBS 2 –1 MARK RATIO TRACKING SYNC MODE NORMAL ALTN Pattern...
  • Page 36 SECTION 4 OPERATION Table 4-1 Panel and Internal Circuits Initial State Item Panel Internal circuits GPIB REMOTE PANEL LOCK MEASURE CH MASK Displayed according to the state at that time. PRINTER ON ALARM ALARM MONITOR ERRORS ADDRESS 1 to 5 GPIB 1 In accordance with the initial state of the switches.
  • Page 37 4.3 Input Conditions Setting 4.3 Input Conditions Setting Rotary encoder (DATA) Sets the DATA THRESHOLD. TERM key Selects the DATA termination condition. To select –2 V termination, press this key while pressing the GUARD key. AUTO SEARCH key Performs AUTO SEARCH. To repeat AUTO SEARCH, press this key again.
  • Page 38 SECTION 4 OPERATION 4.3.1 When both DATA and CLOCK are GND termination Press the GND key. The GND LED lights. Turn the DATA rotary encoder and set the DATA thresh- old value. (See Fig. 4-1-1 to 4-1-3.) Change the CLOCK polarity according to the DATA and clock input phase.
  • Page 39 4.3 Input Conditions Setting Setting the optimum value In the error free state, lower the DATA threshold voltage and measure the voltage that generates an error (V ). Then raise the threshold voltage and measure the voltage that generates an error (V ).

  • Page 40: Auto Search

    SECTION 4 OPERATION 4.3.2 When DATA and CLOCK are both ECL termination While pressing the GUARD key, press the –2 V key. The –2 V LED lights. Set the DATA threshold voltage to –1.3 V (ECL standard voltage). Set the CLOCK phase, etc. as described in Paragraph 4.3.1.
  • Page 41 4.3 Input Conditions Setting 4.3.4 EYE MARGIN Measurement Press the ON key. The LED inside the key lights. At this time, is displayed. Set the threshold value error rate. Start measurement by pressing the START key. At the end of measurement, the measured result is displayed on the display.
  • Page 42 SECTION 4 OPERATION 4.4 Pattern Setting 4-10 www.valuetronics.com...
  • Page 43 4.4 Pattern Setting LOGIC Inverts the DATA/DATA output logic. The DATA output logic is shown by lighting of the POS or NEG lamp. SYNC MODE Selects the sync pull-in mode. One of the following three modes can be selected: NORMAL : Turn on normal sync pull-in.
  • Page 44 SECTION 4 OPERATION 4.4.1 Logic Each time the LOGIC key is pressed, the logic of the set pattern changes in positive negative positive order. (The set logic is shown by lighting of the lamps.) 4.4.2 Alternate pattern setting Select ALTN with the keys.
  • Page 45 4.4 Pattern Setting Change the BIT value with the button below the LED. When LOGIC is positive, lighting of the LED indicates High Level. When you want to change all the DATA at once, use PRESET ALL or PAGE. PAGE 0 or 1: All BIT of the displayed PAGE become 0 or ALL 0 or 1: Each time the 0 or 1 key is pressed while pressing the GUARD key, all BIT specified...
  • Page 46 SECTION 4 OPERATION 4.4.3 Data pattern setting Select DATA with the keys. Set DATA LENGTH with the keys. Select the digit to be set with the keys. Set DATA LENGTH with the keys. DATA LENGTH setting step 2 to 655364 : STEP 1 bit 65536 to 131012 : STEP 2 bits...
  • Page 47 4.4 Pattern Setting 4.4.4 Zero substitution pattern setting Select Z.S. with the keys. Set 2 pattern with the keys. (This pattern is pseudo PRBS with a 2 period.) Set ZERO SUBSTITUTION BIT LENGTH. Here, the pattern is substituted by a set number of bits logic '0' pattern.
  • Page 48 SECTION 4 OPERATION 4.4.5 Pseudo random pattern setting Select PRBS with the keys. Set the number of PRBS frames with the keys. Set the PRBS mark ratio with the keys. When LOGIC is positive, make your selection from the top row (0/8, 1/8, 1/4, 1/2). When LOGIC is negative, make your selection from the bottom row (8/8, 7/8, 3/4, 1/2).
  • Page 49 Error counter number 18 PAGE 2, BIT 16 Error counter number 32 The bit window function masks the error counters in the MP1764A. The 32 error counters detect errors in the order of set pattern bits for programmable patterns (zero substitution, DATA, and alternate).
  • Page 50 SECTION 4 OPERATION 4.4.7 Block window setting This setting masks the bits for 32 bit based pattern error measurement. Press the BLOCK WINDOW key of DISPLAY SELECT to light the LED inside the key. The block window is enabled for programmable patterns (zero substitution, DATA, and alternate).
  • Page 51 4.4 Pattern Setting 4.4.8 Sync detection mode The transmitter generated pattern and receiver pattern synchronization method is selected. Three synchronization methods are available: NORMAL, FRAME, and QUICK. However, the following restrictions ap- ply: Table 4-2 Synchronization Selection Restrictions SYNC MODE PATTERN NORMAL FRAME QUICK...
  • Page 52 SECTION 4 OPERATION QUICK sync mode Select QUICK from SYNC MODE. QUICK sync mode: Method that makes error measurements by fetching data of the bit length set by DATA LENGTH to internal memory and uses the fetched pattern as the standard pattern. In this case, the pattern BIT setting is invalid.
  • Page 53 4.4 Pattern Setting 4.4.9 Tracking Press the TRACKING key. The LED inside the key lights and the MP1764A enters the tracking mode. When tracking is performed, the MP1763B must be con- nected by GPIB. When the PATTERN LOADING lamp lights, data is be- ing read and the keys cannot be operated.
  • Page 54 SECTION 4 OPERATION 4.4.10 Error analysis (Option 01) At error detection, 256 bits of data are memorized and the error and the data before and after it can be checked. Press the ERROR ANALYSIS key. The LED inside the key lights. Change the display page for the ERROR ANALYSIS DATA.

  • Page 55: Error Measurement

    4.5 Error Measurement 4.5 Error Measurement DISPLAY/MODIFY key REAL TIME Y.H.D. Press to set or display the date. When the lamp inside the key lights, the date is displayed on the display. H.M.S. Press to set or display the time., When the lamp inside the key lights, the time is displayed on the display.
  • Page 56 SECTION 4 OPERATION keys keys Select the item to be set when setting REAL TIME. The selected item blinks. keys Used when raising and lowering the set value. MODIFY key Pressed when changing the REAL TIME or MEAS TIME setting. When the LED inside the key lights, the set value can be changed.
  • Page 57 4.5 Error Measurement 4.5.1 ERROR RATIO measurement Press the ERROR RATIO key. The LED inside the key lights and the ERROR RATIO measured result is dis- played at DISPLAY. Press the MODE key and select REPEAT. (See 4.5.7.) When REPEAT is selected, the DISPLAY display value is updated at each MEAS TIME set value.

  • Page 58: Error Count

    SECTION 4 OPERATION 4.5.2 ERROR COUNT Press the ERROR COUNT key. The LED inside the key lights and the ERROR COUNT measured result is dis- played at DISPLAY. Set MODE (Paragraph 4.5.2) and MEAS TIME (Para- graph 4.5.11) and start measurement by pressing the START key.
  • Page 59 4.5 Error Measurement 4.5.3 ERROR INTERVAL Press the ERROR INTERVAL key. The LED inside the key lights. Select the measurement mode. (See 4.5.1.) Set MEAS TIME. (See 4.5.11.) When an intermediate measured result is necessary, press the CURRENT DATA key. The LED inside the key lights.
  • Page 60 SECTION 4 OPERATION 4.5.4 ERROR FREE INTERVAL Press the ERROR FREE INTERVAL key. The LED in- side the key lights. Select the measurement mode. (See 4.5.1.) Set MEAS TIME. (See 4.5.11.) When an intermediate measured result is necessary, press the CURRENT DATA key. The LED inside the key lights.

  • Page 61: Clock Frequency

    4.5 Error Measurement 4.5.5 CLOCK FREQUENCY Press the CLOCK FREQUENCY key. The LED inside the key lights. For SYNC LOSS, CLOCK FREQUENCY is not dis- played. In this case, make measurements with the AUTO SYNC key set to OFF. If the clock pulse is input nor- mally, CLOCK FREQ.

  • Page 62: Display Display

    SECTION 4 OPERATION 4.5.6 DISPLAY display Select the item to be displayed at DISPLAY from among error ratio, error count, error intervals, error free intervals, and clock frequency. Press the key of the item you want to display. The LED inside the key lights.

  • Page 63: Measurement Mode Selection

    4.5 Error Measurement 4.5.7 Measurement mode selection Press the MODE key and select the measurement mode. The measurement mode changes in REPEAT → SINGLE → UNTIMED → REPEAT... order and the LED of the selected item lights. When selecting REPEAT or SINGLE, set the measure- ment time in accordance with Paragraph 4.5.11.
  • Page 64 SECTION 4 OPERATION 4.5.9 Current data function The current data function can display intermediate measured results at the specified cycle time (0.1, 0.2 secs). There are two intermediate measured result calculation modes: PROGRESSIVE mode and IMMEDIATE mode. In the PROGRES- SIVE mode, the result accumulated from the start of measurement is displayed.

  • Page 65: Auto Sync Function

    4.5 Error Measurement 4.5.10 AUTO SYNC function In normal measurement, the AUTO SYNC function is turned on and input pattern and comparison pattern syn- chronization is established automatically. To turn on the AUTO SYNC function, press the AUTO SYNC key. The lamp inside the key lights.
  • Page 66 SECTION 4 OPERATION Table 4-4-1 Sync Threshold Values (At INT) Error count Sync threshold value Error ratio Clock count Mode Pattern Data length Sync pull-in state sync loss state Sync loss state sync pull-in state When normal (When abnormal) – –...
  • Page 67 4.5 Error Measurement Table 4-4-2 Sync Threshold Values (At 10 –2 to 10 –8 The Sync Threshold values are independent from the Pattern and Data Length. Error count Sync threshold value Error ratio Clock count SYNC THRESHOLD Sync pull-in state sync loss state Sync loss state sync pull-in state When normal (When abnormal)
  • Page 68 SECTION 4 OPERATION 4.5.11 Measurement time setting This setting sets the measurement time in the REPEAT and SINGLE measurement modes. Press the PERIOD key. The currently set measurement time is displayed at DISPLAY. Press the MODIFY key. The figures on DISPLAY that can be changed begin to blink.
  • Page 69 4.5 Error Measurement 4.5.13 Error lamp and alarm lamps (1) Error lamp This lamp indicates that an error was generated. • ON condition: When error generated • OFF condition: When there are no errors and at clock loss and sync loss (2) Alarm lamps The alarm lamps are made up of a HISTORY lamp (orange, small) that displays the past state and a realtime lamp (orange, large) that displays the current state.
  • Page 70 SECTION 4 OPERATION 4.5.14 Error detection mode setting Errors are detected by comparing each bit of the input pattern to an internally generated pattern. The error detection mode has three kinds of errors: total error, insertion error, and omission error. The kind of error is selected by rear panel FUNC- TION1 SW7 and SW8 as shown below.
  • Page 71 4.6 Memory (Floppy Disk) 4.6 Memory (Floppy Disk) File No. selection File control Mode selection Eject 4-39 www.valuetronics.com...
  • Page 72 SECTION 4 OPERATION 4.6.1 File save Insert a formatted disk (2HD, 2DD) into the floppy disk drive. (For a description of the formatting method, see Paragraph 4.6.3 Disk formatting.) Select the PATT mode or OTHERS mode. PATT mode : Stores the contents set at Paragraph 4.4. OTHERS mode : Stores the contents other than PATT.

  • Page 73: File Recall

    4.6 Memory (Floppy Disk) 4.6.2 File recall Insert the disk into the floppy disk drive and select the DIR mode. When the FD was changed, always execute the DIR command. Press the keys and check if the file exists. If the file exists, only its file name is displayed.

  • Page 74: File Delete

    SECTION 4 OPERATION 4.6.4 File delete Insert the floppy disk into the floppy disk drive and select the name of the file you want to delete. Press the SHIFT key. Press the DELETE key. The file with the displayed file name is deleted.

  • Page 75: Floppy Disk Precautions

    (e) Compatibility The MP1764A Error Detector 'PTN' file mode can be used with the MP1763B Pulse Pattern Generator. The 'OTH' file cannot be used with the MP1763B Pulse Pattern Generator. The MP1764A cannot read the files of the old MP1702A, MP1609A, and MP1651A Error Detectors.

  • Page 76: Printer Output

    SECTION 4 OPERATION 4.7 Printer output The MP1764A has an GPIB connector for local printer. It is easy to print measurement data. Five kinds of data are printed: measurement start data, measurement end data, intermediate measurement data, 1 second data, and alarm data.
  • Page 77 4.7 Printer output The print data contents are shown below. Table 4-6 Print Data Contents Print data contents Print timing Printing restriction Measurement Measurement start time At the start of None start data measurement. Measurement Measurement start time The following can be selected with At the end of measurement end data Measurement end time...
  • Page 78 SECTION 4 OPERATION Table 4-6 Print Data Contents (Continued) Print data contents Print timing Printing restrictions Generation time 1 second Every second The following can be selected with 1 second average error ratio data FUNCTION2 SW5, SW6, and SW7: 1 second error count Do not print 1 second data.

  • Page 79: Printing Format

    4.7 Printer output 4.7.1 Printing Format Note: Print data (Differs with the setting state and measurement state) (1) Measurement start data <<START 94-03-01 21: 20: 05 REPEAT 99-01: 59: 59 >> Measurement start time Measurement mode Measurement time Day-hour:minute:second REPEAT Year-day-time Hour:minute:second (Not printed for UNTIMED.) SINGLE...
  • Page 80 SECTION 4 OPERATION • Sync loss/sync recovery Sync loss generation time Year-day-time Hour: minute: second 94-03-01 21: 20:11 >> << PATTERN SYNC LOSS 94-03-01 21: 20:12 >> << PATTERN SYNC RECOVERY Sync recovery time Year-day-time Hour: minute: second (4) Measurement end data and intermediate measurement data There are two output formats, standard format and abbreviated format.
  • Page 81 4.7 Printer output When there is threshold EI/EFI data to be printed, the following data is printed between lines 8 and 9. Line 9 THRESHOLD EI. EFI Line 10 ERROR RATIO ERROR INTVL %ERROR FREE INTVL >1.0E-3 100.0000% Line 11 Number of threshold EI Threshold EFI ratio Line 12...
  • Page 82 SECTION 4 OPERATION When there is error performance data to be printed, the following data is printed after line 19 (between lines 8 and 9 when threshold EI/EFI data is not printed). Line 19 ERROR PERFORMANCE (Line 9) Line 20 %ERRORED SECOND 100.0000% %ERROR FREE SECOND...
  • Page 83 4.8 Definition of Terms 4.8 Definition of Terms 4.8.1 Measurement items (1) Error ratio Number of error pulses in measurement time Number of clock pulses in measurement time (2) Error count Number of error pulses in measurement time. (3) Error intervals (EI) count Number of intervals (1 second) containing one or more error pulses in measurement time.
  • Page 84 SECTION 4 OPERATION 4.8.4 Error performance data The interval from the start of measurement to the end of measurements is divided into available periods and unavailable periods, with 1 second interval as the unit. Each item is calculated for the available periods. (1) Definition of unavailable period and available period When an interval at which the 1 second average error ratio exceeds the unavailable threshold (unavailable period) continues for 10 seconds, the unavailable period starts and this 10 seconds is included in the unavailable seconds.
  • Page 85 4.8 Definition of Terms • Available seconds (during judgment) This is the state during which whether the last interval is included in the available seconds in an available period. When the interval is an available interval, the continuation time of that state is calculated in the available seconds and the state changes to available period (after confirmation).
  • Page 86 SECTION 4 OPERATION 4.9 Processing of Measurement Data At Alarm Generation (1) Power failure When a power failure alarm is generated during measurement, the measurement data up to the interval before the interval that generated the power failure alarm is saved during the power failure. If the measurement data was correctly saved, measurement is continued after the power recovers.
  • Page 87 4.9 Processing of Measurement Data At Alarm Generation (b) Inclusion of clock loss processing in calculation (FUNCTION1 SW2 set to 1.) (i) Error measurement The number of error pulses and number of clock pulses counted in the interval that generated the clock loss alarm are removed from calculation.

  • Page 88: Function Switch Setting

    SECTION 4 OPERATION 4.10 FUNCTION Switch Setting The setting contents of the FUNCTION1 and 2 switches on the rear panel of the mainframe show below. When the FUNCTION2 SW10 setting was changed, turn on the mainframe power again. When the setting of the other FUNCTION switches was changed, the power does not have to be turned on again. Note: When the system control setting was changed, turn on the power again.
  • Page 89 4.10 FUNCTION Switch Setting FUNCTION 1 Marking Function BIT SHIFT Number of AND shift bits at mark ratio setting switch NUMBER FOR 1 bit MARK RATIO 3 bits VARIED CLOCK LOSS Clock loss processing function selector switch EVALUATION Do not measure and evaluate clock loss Measure and evaluate clock loss SYNC LOSS Sync loss processing function selector switch...
  • Page 90 SECTION 4 OPERATION FUNCTION 2 Marking Function SHORT FORM Measurement data printing format selector switch OUTPUT Standard format Abbreviated format THRESHOLD Switch that selects whether or not threshold EI and EFI data EI, EFI DATA are printed. Do not print Print ERROR Switch that selects whether or not error performance data is...

  • Page 91: Principle Of Operation

    SECTION 5 PRINCIPLE OF OPERATION 5.1 Pseudorandom Pattern (PRBS Pattern) The principle of pseudorandom pattern generation is shown in Table 5-1. The pseudorandom pattern is represented by the N-order generation polynomial shown in Table 5-1. One period is 2 –1. A PRBS pattern with a 2 –1 period produces an N bits continuous "1"...
  • Page 92 SECTION 5 PRINCIPLE OF OPERATION Shift register Mark ratio PRBS pattern generator 1/4 (1 bit shift) (See Table 5-1) 1/8 (1 bit shift) 1/4 (3 bit shift) 1/8 (3 bit shift) Fig. 5-1 Mark Ratio 1/4, 1/8 Pattern Generation Circuit (2 /8)-1 bit DATA1 2 /8 bits...
  • Page 93 5.2 Pattern Synchronized Output Synchronization 5.2 Pattern Synchronized Output Synchronization 5.2.1 Pseudorandom pattern Period = × (2 –1) × 32 (Set frequency) N=7, 9, 11, 15, 20, 23, 31 × 32 plus pulses) (Where pulse width = (Set frequency) 5.2.2 Programmable pattern (1) Data pattern, alternate pattern (a) Data length = 65536 or less ×...
  • Page 94 SECTION 5 PRINCIPLE OF OPERATION 5.3 Frame Sync Output The frame sync pulse is output when the frame sync function is on. Its period and pulse width are shown in Fig. 5-3. – • Pulse width = ×32 (Set frequency) •...

  • Page 95: Error Output

    5.4 Error Output 5.4 Error Output The error output can be of two types, direct error and stretched error. The error detection block diagram is shown in Fig. 5- 4 and the error output pulse is illustrated in Fig. 5-5. Fig.
  • Page 96 SECTION 5 PRINCIPLE OF OPERATION (Blank) ..www.valuetronics.com...

  • Page 97: Section 6 Measurement

    (5) Set the MP1763B frequency to the measurement frequency, and the OUTPUT to ON. (6) Press the MP1764A AUTO SYNC key, then press the AUTO SEARCH key. After the end of AUTO SEARCH, check that all the error and alarm lamps are off. If an error lamp is lit, change the MP1763B CLOCK phase.
  • Page 98 SECTION 6 MEASUREMENT 6.3 Burst Measurement To perform the burst measurement, set the function sw5 (BURST MODE) on the MP1764A rear panel to ON and connect the MP1764A to the MP1763B and DUT as shown below: MP1763B MP1764A PULSE   PATTERN   GENERATOR   MP1763B    0.05 - 12.5GHz ERROR  DETECTOR   MP1764A    0.05 - 12.5GHz INTERNAL   CLOCK  (OPTION.01)

  • Page 99: Performance Check

    PERFORMANCE CHECK 7.1 When Performance Check Necessary Performance checks are performed to check that the main performances of the MP1764A satisfy the ratings. Carry out the performance checks during receiving inspection, operation confirmation after repair, and periodic inspection (every six months).

  • Page 100: Check Method

    (c) Set the MP1763B FREQUENCY to an arbitrary value with the frequency setting knob. (d) Press the MP1764A AUTO SEARCH key. At this time, check that the ERRORS lamp at the MP1764A display is not lit. (e) Repeat steps (c), (d) and confirm that the MP1764A operates normally.
  • Page 101 (a) Set up the equipment as shown in Fig. 7-1. (b) While pressing the MP1763B and MP1764A LOCAL key, set the POWER switch to ON and set the instruments to the initialize state. Then, set the MP1763B OUTPUT and the MP1764A AUTO SYNC to ON.
  • Page 102 (a) Set up the equipment as shown in Fig. 7-1. (b) While pressing the MP1763B and MP1764A LOCAL key, set the POWER switch to ON and set the instruments to the initialize state. Then, set the MP1763B OUTPUT and the MP1764A AUTO SYNC to ON.
  • Page 103 (a) Set up the equipment as shown in Fig. 7-1. (b) While pressing the MP1763B and MP1764A LOCAL key, set the POWER switch to ON and set the instruments to the initialize state. Then, set the MP1763B OUTPUT and the MP1764A AUTO SYNC to ON.

  • Page 104: Measurement Items

    (a) Set up the equipment as shown in Fig. 7-1. (b) While pressing the MP1763B and MP1764A LOCAL key, set the POWER switch to ON and set the instruments to the initialize state. Set the MP1763B OUTPUT to ON, and the frequency to 10 GHz.

  • Page 105: Section 8 Maintenance

    SECTION 8 MAINTENANCE 8.1 Daily Maintenance The daily maintenance method and maintenance period are shown in Table 8-1. Table 8-1 Item Period Maintenance method Exterior soiling ･ Before long-term storage Wipe with a cloth dipped in dilute neutral cleanser. Dust ･ When used in a dusty place Blow off with compressed air.
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  • Page 107: Troubleshooting And Repair

    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. 9.2 Fuse Replacement Turn off the power switch, then disconnect the power cable plugged into the AC power inlet. Next, open the AC power fuse holder cover and replace the fuse with a spare.
  • Page 108 SECTION 9 TROUBLESHOOTING AND REPAIR (Blank) www.valuetronics.com...

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