Anritsu MP1777A User manual

Third Edition
To ensure that this equipment is used safely, important
safety items are explained in the MP1777A 10 GHz
Jitter Analyzer Operation Manual.
This manual explains important service items related
service. Read both the operation manual and this
manual, and keep both with the equipment.
ANRITSU CORPORATION
Document No.: M-W1497BE-3.0
MP1777A
10 GHz Jitter Analyzer
Service Manual

ii
MP1777A 10 GHz Jitter Analyzer
Service Manual
1 June 1999(First Edition)
2 September 2002(Third Edition)
Copyright 1999-2002, 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
For Safety
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 imperative to open the cover for
emergency repair, take great care not to touch any dangerous part.
Always request repair by a trained engineer who understands the hazards.
Anritsu Corporation will not accept liability for any injuries sustained as a result of opening the equipment
covers.

iii
Part Names ＆
＆＆
＆Part Numbers
Please specify the part numbers shown in the parts list when making inquiries or when ordering parts. There
may be a difference between the names of parts used in this manual and the parts actually used in the
equipment or supplied for repair. This is because equivalent part parts with the same functions, performance
and reliability as the parts specified in the circuit diagrams and parts list have been used or supplied. Since
the parts are equivalent, they have absolutely no adverse effect on the equipment specified functions,
performance or reliability.

iv
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

I
Table of Contents
For Safety...................................................... ii
Section 1 General....................................... 1-1
Section 2 Outline of Operation.................. 2-1
2.1 Exchangeable Module Lists............................................. 2-2
2.2 Block Diagram.................................................................. 2-4
2.3 Module functions.............................................................. 2-11
Section 3 Troubleshooting ........................ 3-1
3.1 Outline.............................................................................. 3-2
3.2 Service Kits ...................................................................... 3-2
3.3 Instruments Required for Troubleshooting ...................... 3-3
3.4 Overall Troubleshooting................................................... 3-4
Section 4 Adjustment ................................ 4-1
4.1 Outline.............................................................................. 4-2
4.2 Instruments Required for Adjustment .............................. 4-3
4.3 A2 CPU (MM100124A) .................................................... 4-4
4.4 A3 CLOCK GENERATOR (MM100125A*1)..................... 4-6
4.5 A401/A402 JITTER TX (MM100126A*2).......................... 4-7
4.6 A5 JITTER 10 G (MM100127A*3) .................................... 4-8
4.7 A8 JITTER MEASUREMENT(MM100128A*4)................. 4-9
4.8 Tx Overall Adjustment ..................................................... 4-10
4.9 Overall Adjustment........................................................... 4-13
4.10 Calibration........................................................................ 4-19
4.11 Automatic Inspection........................................................ 4-22
Section 5 Mechanical Configuration......... 5-1
Note:
Module names for Option 04
*1 MM100162A
*2 MM100163A
*3 MM100164A
*4 MM100166A

II.

Section 1 General
1-1
This service manual explains how to maintain the MP1777A 10 GHz Jitter Analyzer.
Refer to the separate operation manual for handling the instruments.
Our basic policy to the repair is return to the factory system, i. e. the defective
instrument should be returned to Anritsu for repair.
However, it may be time consuming and some kinds of repairs can be easily done in
the field.
Therefore, Anritsu allows only those who Anritsu has authorized to open the
instrument and repair it.
As clearly stated in the WARRANTY statement, any unauthorized modification,
repair, or attempt to repair will render the warranty void.
This service manual consists of the following 5 sections.
Section 1 General
Section 1 explains the configuration of this service manual.
Section 2 Outline of Operation
Section 2 explains the configuration and the block diagram of the
MP1777A.
Section 3 Troubleshooting
Section 3 explains how to locate a fault portion at occurrence of a
fault.
Section 4 Adjustment
Section 4 explains the adjustment, calibration, and automatic
inspection of the MP1777A.
Section 5 Mechanichal Configuration
Section 5 explains how to remove a defective part for troubleshooting
or replacement.
Note:
A table for the list of Dwg. No. of circuit diagrams, parts list, and PC boards
is provided in the separate “Schematics (M-W1497GE)” of the MP1777A,
with the circuit diagrams and parts list.

Section 1 General
1-2.

Section 2 Outline of Operation
2-1
2.1 Exchangeable Module Lists....................................... 2-2
2.2 Block Diagram ........................................................... 2-4
2.3 Module function ......................................................... 2-11

Section 2 Outline of Operation
2-2
2.1 Exchangeable Module Lists
The MP1777A is Composed of the 24 exchangeable modules and 5 Options listed in
Tables 2-1 and 2-2, respectively.
Table 2-1 Exchangeable Modules of MP1777A
Model Name Product Name Order No./
Mfg. Code No. Remarks
A1 MOTHER BOARD 44Y104613
MM100124A A2 CPU 44Y104614
MM100125A A3 CLOCK GENERATOR 44Y104615
MM100126A A401/A402 JITTER TX 44Y104616+44Y104843
MM100127A A5 JITTER 10 G 44Y104619
MM100128A A6/A7 JITTER DETECTOR 44Y104617+44Y104618
MM100129A A8 JITTER MEASUREMENT 44Y104841
MM100130B A9 R-F 44Y104621
MM100131B A10 L-F 44Y104842
A11 CNCT 44Y104844
MM100132A A13 CAL 44Y104845
44Z103580 G1 Power supply unit 44Z103580 2 fuses
44Z103580B G1 Power supply unit 44Z103580B 1 fuse
NL6448AC20-02 H1 LCD
(Liquid crystal display)
No. 1256
UC25100-MX-M U2 UP CONVERTER No. 1494 Standard/Option 01
DC10025-MA-M U3 DOWN CONVERTER No. 1494 Standard/Option 01
DC10626-MA-M U4 DOWN CONVERTER No. 1494 Option 02
UC26106-MX-M U5 UP CONVERTER No. 1494 Option 02
U6 MDC-154SMA (MIXER) No. 1620
MN2706A U8 WIDEBAND AMPLIFIER W4Z24869 Option 10
K1-11 HCS2-110-F
(RF COAXIAL SWITCH)
No. 1305
MM100162A A3 CLOCK GENERATOR 44Y107933 Option 04
MM100163A A401/A402 JITTER TX 44Y107934+44Y104843 Option 04
MM100164A A5 JITTER 10G 44Y107935 Option 04
MM100165A A6/A7 JITTER DETECTOR 44Y107936+44Y107937 Option 04
MM100166A A8 JITTER MEASUREMENT 44Y107938 Option 04
DC12231-MA-M U4 DOWN CONVERTER 44Y107263 Option 04
UC31122-MX-M U5 UP CONVERTER 44Y107262 Option 04

2.1 Exchangeable Module Lists
2-3
Table 2-2 Options of MP1777A
Model name Name Order No.
MP1777A-01 2494M/4988M/9977M Jitter 44Y104610E
MP1777A-02 2666M/5332M/10664M Jitter 44Y104610B
MP1777A-04 3062M/6125M/12249M Jitter 44Y104610H
MP1777A-10 High sensitive input 44Y104610D
MP1777A-12 1MHz HPF 

Section 2 Outline of Operation
2-4
2.2 Block Diagram
This section shows the block diagram of the MP1777A.

Section 2 Outline of Operation
2-5
TITLE DRAWNG No.

Section 2 Outline of Operation
2-6
DRAWNG No.

Section 2 Outline of Operation
2-7

Section 2 Outline of Operation
2-8
DRAWNG No.

Section 2 Outline of Operation
2-9
DRAWNG No.

Section 2 Outline of Operation
2-10
DRAWNG No.

2.3 Module function
2-11
2.3 Module function
Note:
* indicates the module name only for the Option 04.
(1) A1 MOTHER BOARD
This module transmits the signals between the modules.
(2) A2 CPU (MM100124A)
This module controls all the modules.
(3) A3 CLOCK GENERATOR (MM100125A, MM100162A*)
･This module generates the reference signals for Jitter Generation section.
･This also detects the loss of synchronization. (UNLOCK1 [DCS Input],
UNLOCK2 [10 M STD Input, Internal]).
(4) A401/A402 JITTER TX (MM100126A, MM100163A*)
･This module generates a jitter to the reference signal sent from the
MM100125A (MM100162A*).
･This also detects the loss of synchronization of Tx PLL. (UNLOCK3
[Jitter ON, Tx Ranges: 0.5 UI, 20 UI, 40 UI, 80 UI], UNLOCK4 [Jitter ON,
Tx Ranges: 800 UI, 1600 UI, 3200 UI, and Jitter OFF]).
･This also monitors the amount of generated jitter. (A402)
(5) A5 JITTER 10 G (MM100127A, MM100164A*)
This module outputs the signals from the MM100125A after multiplexing the
frequency or switching them.
(6) A6/A7 JITTER DETECTOR (MM100128A, MM100165A*)
･This module detects the jitter.
･This also detects the loss of synchronization of the Jitter Detector section.
(UNLOCK, UNLOCK5)
･This also measures the detected jitter signals in RMS units.
(7) A8 JITTER MEASUREMENT (MM100129A, MM100166A*)
･This module detects the jitter peak.
･This also outputs the local signal for DC10025-MA-M. (X3)
･This also outputs the local signals for DC10626-MA-M. (X5)
(8) A9 R-F (MM100130B)
This module displays the detected alarm and unlock on the front panel LEDs,
and sends the data set using the front panel keys (Setup, Test Menu, Result, Set,
Cancel, ←, →, ↑, ↓, Start/Stop) to the A2 CPU module.
(9) A10 L-F (MM100131B)
This module sends the data set using the front panel keys (Local, Panel Lock,
Remote) to the A2 CPU module.
(10) A11 CNCT
This module transmits signals from A2 to H1 LCD.
(11) A13 CAL (MM100132A)
This is a service kit for the calibration of the MP1777A 10 GHz Jitter Analyzer.

Section 2 Outline of Operation
2-12.
(12) G1 44Z103580 Power supply unit (2 fuses) (44Z103580)
G1 44Z103580 Power supply unit (1 fuse) (44Z103580B)
This module provides DC power to each modules.
(13) H1 LCD (Liquid crystal display) (NL6448AC20-02)
This module displays the setting values and the measured result.
(14) U2 UP CONVERTER (UC25100-MX-M)
This module is a frequency multiplier for the Standard and Option 01 units.
This multiplies the input frequency (2.5 GHz) by 1, 2 or 4 (to obtain 2.5 GHz, 5
GHz or 10 GHz signal), and outputs the signal to the Clock Output connector.
(15) U3 DOWN CONVERTER (DC10025-MA-M)
This module is a frequency converter for the Standard and Option 01 units.
This converts the frequency (5 GHz or 10 GHz) of the Local signal (A8 X3)
input to obtain a 2.5 GHz signal, and outputs the signal.
(16) U4 DOWN CONVERTER (DC10626-MA-M, DC12231-MA-M*)
This module is a frequency converter for the Option 02 unit. This converts the
frequency (5.3 GHz or 10.6 GHz) of the Local signal (A8 X5) input to obtain a
2.6 GHz signal, and outputs the signal.
(17) U5 UP CONVERTER (UC26106-MX-M, UC31122-MX-M*)
This module is a frequency multiplier for the Option 02 unit. This multiplies
the input frequency (2.6 GHz) by 1, 2 or 4 (to obtain 2.6 GHz, 5.3 GHz or 10.6
GHz), and outputs the signal to the Clock Output connector.
(18) U8 WIDEBAND AMPLIFIER (MN2706A)
This module is an amplifier for the Option 10 unit (High Sensitive Input) which
works for the low input level of Clock Input.
(19) U6 MIXER (MDC-154SMA)
This module outputs the IF signal according to the frequency difference
between the LO and RF input signals (for Rx Range: 1 UI.)
(20) K1-11 RF COAXIAL SWITCH (HCS2-110-F)
This module switches the high-frequency signal route according to the settings
of Bit rate, Range, etc..