Anritsu MP1763C User manual

Document No.: M-W1848BE-2.0
ANRITSU CORPORATION
MP1763C
Pulse Pattern Generator
Service Manual
Second Edition
To ensure that the equipment is used safely, read the
"For Safety" in the MP1763C Pulse Pattern Genera-
tor Operation Manual first.
Keep this manual with the equipment.

ii
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. Insure that you clearly understand the meanings of the sym-
bols 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.
Symbols used in manual
This indicates a very dangerous procedure that could result in serious injury or
death if not performed properly.
This indicates a hazardous procedure that could result in serious injury or death if
not performed properly.
This indicates a hazardous procedure or danger that could result in light-to-severe
injury, or loss related to equipment malfunction, if proper precautions are not taken.
Safety Symbols Used on Equipment and in Manual
The following safety symbols are used inside or on the equipment near operation locations to provide information
about safety items and operation precautions. Insure that you clearly understand the meanings of the symbols
and take the necessary precautions BEFORE using the equipment.
This indicates a prohibited operation. The prohibited operation is indicated sym-
bolically in or near the barred circle.
This indicates an obligatory safety precaution. The obligatory operation is indicat-
ed symbolically in or near the circle.
This indicates warning or caution. The contents are indicated symbolically in or
near the triangle.
This indicates a note. The contents are described in the box.
These indicate that the marked part should be recycled.
MP1763C
Pulse Pattern Generator
Service Manual
30 March 2001 (First Edition)
18 June 2002 (Second Edition)
Copyright © 2001-2002, ANRITSU CORPORATION.
All rights reserved. No part of this manual may be reproduced without the prior written permission of the
publisher.
The contents of this manual may be changed without prior notice.
Printed in Japan
Safety Symbols
DANGER
WARNING
CAUTION

For Safety
iii
WARNING
For safety, do not open the equipment covers.
If repair is required, contact the sales representative, branch office, or
agent at the telephone number and address given in this document or in
the equipment operation manual.
Although not recommended by Anritsu Corporation, if it is really impera-
tive
to open the covers for emergency repair, take great care not to touch any
dangerous parts.
Always request repair by a trained engineer who understands the haz-
ards.
Anritsu Corporation will not accept liability for any injuries sustained as a
result of opening the equipment covers.
WARNING
Sure to read "For Safety" at the beginning of this manual before repair.
Then, understand the contents of this manual for repair. This liquid is very
caustic and poisonous.

iv
Notes On Export Management
This product and its manuals require an Export License/Approval by the
Government of the product's country of origin for re-export from you
r
country.
Before re-exporting the product or manuals, please contact us to confirm
whether they are export-controlled items or not.

v
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.
Example 1: An example of the single fuse is shown below:
Fuse Holder
Example 2: An example of the double fuse is shown below:
Fuse Holders

vi

I
About This Manual
This service manual is used for the MP1763C Pulse Pattern Generator Composi-
tion of the service manual:
Service Manual: Describes circuit explanation, troubleshooting, adjustment,
mechanical configuration, PC-board numbers/names, and circuit diagram num-
bers.
Schematics: Shows circuit diagrams and parts lists with the drawing num-
bers.
This manual is for the service personnel of overseas corporation and con-
tract representatives of Anritsu Corporation, not for the customers to repair
the MP1673C.
Service manual (M-W1848BE)
Schematics (M-W1848GE)

II.
Table of Contents
For Safety ................................................... iii
About This Manual ....................................... I
Section 1 Outline....................................... 1-1
Section 2 Outline of Operation................. 2-1
2.1 General principles of operation ..................................... 2-2
Section 3 Troubleshooting ....................... 3-1
3.1 Introduction ................................................................... 3-2
3.2 Repair level ................................................................... 3-2
3.3 Location......................................................................... 3-2
3.4 Measuring static electricity............................................ 3-2
3.5 Service Kits ................................................................... 3-2
3.6 Equipment Required for Troubleshooting,
Repair and Calibra-tion. ................................................ 3-2
3.7 Overall Troubleshooting................................................ 3-3
3.8 Typical output waveform ............................................... 3-10
Section 4 Waveform Check ...................... 4-1
4.1 DC voltage check.......................................................... 4-2
4.2 Waveform check ........................................................... 4-2
Section 5 Adjustment Procedure............. 5-1
5.1 Performance Test.......................................................... 5-2
5.2 Calibration Setup........................................................... 5-3
Section 6 Mechanical Configuration ....... 6-1
6.1 Cleaning Optical Connector .......................................... 6-2
6.2 Recharging Battery ....................................................... 6-3
6.3 Self-Diagnostic Error Display ........................................ 6-4
Appendix A Outline of Operation ............. A-1
A.1 Block Diagram............................................................... A-3
A.2 Module List.................................................................... A-11

Section 1 Outline
1-1
This is the service manual for the MP1763C Pulse Pattern Generator.
It covers the following topics;
SECTION 2 OUTLINE OF OPERATION
SECTION 3 TROUBLESHOOTING
SECTION 4 WAVEFORM CHECK
SECTION 5 ADJUSTMENT PROCEDURE
SECTION 6 MECHANICAL CONFIGURATION
APPENDIX OVERALL CIRCUIT DIAGRAM
For specifications, operating instructions, performance checks, and a detailed de-
scription of the MP1763C Pulse Pattern Generator panel controls, refer to the sepa-
rate operation manual.
CAUTION
Since the monolithic and hybrid ICs that are mounted in this
instrument are very sensitive, be very careful when
handling them.

Section 1 Outline
1-2.

Section 2 Outline of Operation
2-1
2.1 General principles of operation.................................. 2-2
2.1.1 Block diagram................................................ 2-2
2.1.2 Data signal .................................................... 2-2
2.1.3 Clock signal ................................................... 2-2

Section 2 Outline of Operation
2-2
2.1 General principles of operation
2.1.1 Block diagram
Fig. 2-1 shows the MP1763C block diagram.
2.1.2 Data signal
MP1763C consists of A08,A10,A09,A23 and E13 for Data signal.
A08 PG generates the programmable pattern and pseudo-random pattern(128 bits of
data)
These 128 bits of data are multiplexed within the A10 MUX(L),A9 MUX(M) and
A23 MUX(H) PKG and are then output via E13 DFF+OUT2 hybrid IC.
2.1.3 Clock signal
MP1763C consists of E7,E12,E8,E11 and E10 for Data signal.
Internal synthesizer is optionally available.
Clock signal is fed to E7 CLOCK INPUT hybrid IC, which amplifies the original
signal and splits it into two. One of these outputs is fed through the E12 DELAY unit
to the E8 CLOCK BRANCH HIC where it is again splits into three signals, one of
which is output via Z3 5dB Pad for CLOCK 2 and the other one is output via E10
CLOCK OUT HIC after being delayed by E11 DELAY unit for CLOCK 1.
The frequency of the second signal output by E7 CLOCK INPUT HIC is succes-
sively divided by A29 FREQ DIVIDER and output to each respective unit.
The third signal output by E8 CLOCK BRANCH HIC is fed into E13 DFF+OUT2
HIC.

2.1 General principles of operation
2-3
Fig. 2-1

Section 2 Outline of Operation
2-4.

Section 3 Troubleshooting
3-1
3.1 Introduction ................................................................ 3-2
3.2 Repair level................................................................ 3-2
3.3 Location ..................................................................... 3-2
3.4 Measuring static electricity ........................................ 3-2
3.5 Service Kits................................................................ 3-2
3.6 Equipment Required for Troubleshooting,
Repair and Calibration............................................... 3-2
3.7 Overall Troubleshooting ............................................ 3-3
3.7.1 Data signal problem ...................................... 3-3
3.7.2 Clock signal problem ..................................... 3-3
3.7.3 Waveform check method............................... 3-3
3.8 Typical output waveform............................................ 3-10
3.8.1 Data output.................................................... 3-10
3.8.2 Clock output .................................................. 3-10
3.8.3 Abnormal waveform ...................................... 3-10
3.8.4 Output with ECL termination ......................... 3-10
3.8.5 1/8 Data and Clock output............................. 3-10
3.8.6 ALTN pattern ................................................. 3-10
3.8.7 ZERO Substitution pattern ............................ 3-11

Section 3 Troubleshooting
3-2
3.1 Introduction
SECTION 3 describes how to troubleshoot the instrument when abnormalities occur
during measurement or performance checks.
3.2 Repair level
Repair of MP1763C is required just to replace PKG, UNIT or HIC.
Adjustment will be required for some PKGs, UNITs and HICs.
3.3 Location
Location of PKGs, UNITs and HICs are shown on page 3-6/3-7.
3.4 Measuring static electricity
To prevent damage caused by static electricity, always put a conductive mat on the
working table. In addition, the individual who is repairing, should wear a wrist strap
as shown in Fig. 3-1.
Fig. 3-1 Preventing Damage due to Static Electricity
3.5 Service Kits
The service kits described in Table 3-1 are required for troubleshooting.
3.6 Equipment Required for Troubleshooting, Repair
and Calibration.
The equipment listed in Table 3-2 are recommended for troubleshooting, repair
andcalibration. Different test equipment may be used that it meets the specifications
listed in the table.

3.7 Overall Troubleshooting
3-3
3.7 Overall Troubleshooting
This paragraph describes how to find a faulty section.
3.7.1 Data signal problem
If the MP1763C does not output data signal, check waveform from at [1] to [11] of
Fig 3-2.
If it shows errors for both PROG and PRBS, check errors at [2],[4] and [6] of Fig 3-2
by using an Error Detector. Please refer SECTION 4 for waveform checking.
3.7.2 Clock signal problem
Check waveform at [12] to [15] of Fig 3-2.
Please refer SECTION 4 for waveform checking.
3.7.3 Waveform check method
(1) 50Ωterminated device
(2) ECL terminated device

Section 3 Troubleshooting
3-4
Table 3-1 Service Kits
Name Dwg.No. QTY. Diagram
Extender
board 1
44Y98438 1
Extender
board 2
44Y98439 1

3.8 Typical output waveform
3-5
Table 3-1 Service Kits (Continued)
Name Dwg.No. QTY. Diagram
Extender
board 3
44Y98440 1
Extender
board 3B
44Y98440B 1
Extender
cable for
SYNTHE
44Y98439 1

Section 3 Troubleshooting
3-6
Table 3-2 Equipment Required for Troubleshooting and Repair
Required equipment Required performance Measured item
Sampling oscilloscope Frequency band: Up to 50 GHz
Rise time: <7ps
Waveform
Trigger count down Frequency rang:500MHz to 18 GHz Waveform
MP1764A Error Detector
(Anritsu)
Frequency rang:50MHz to 12.5 GHz Error rate
Probe Frequency rang: DC to 6 GHz Waveform
ECL Terminator Frequency rang: DC to 10 GHz For monitoring the ECL level of
the output waveform
P06-SMA Adaptor For checking the output of the
A10 MUX(L)
Y90-SMA Adaptor For checking the output of the
A08 PG
MF76A
Microwave Frequency
Counter
(Anritsu)
Frequency rang: 10Hz to 18 GHz Frequency check
Y90-P SMA-P