Anritsu MP1801A Service Manual
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Anritsu MP1801A Service Manual

Anritsu MP1801A Service Manual

43.5g mux
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MP1801A
43.5G MUX
Service Manual
First Edition
To ensure that this equipment is used safely, impor-
tant safety items are also explained in the MP1801A
43.5G MUX Operation Manual.
This manual explains important service items relat-
ed to service.
Read both the operation manual and this manual,
and keep both with the equipment.
Measurement Solutions
ANRITSU CORPORATION
Document No.: M-W1961BE-1.0

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  • Page 1 43.5G MUX Service Manual First Edition To ensure that this equipment is used safely, impor- tant safety items are also explained in the MP1801A 43.5G MUX Operation Manual. This manual explains important service items relat- ed to service. Read both the operation manual and this manual, and keep both with the equipment.
  • Page 2 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.
  • Page 3 3. 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 1. Before changing the fuses, ALWAYS remove the power cord from the poweroutlet and replace the blown fuses. ALWAYS use new fuses of the type and rating specified on the fuse marking on the rear panel Changing Fuse of the cabinet.
  • Page 5 Anritsu Corporation will not accept liability for equipment faults due to unforeseen and unusual circumstances, nor for faults due to mishandling by the customer. Anritsu Corporation Contact If this equipment develops a fault, contact Anritsu Corporation or its rep- resentatives at the address in this manual. v v v v...
  • Page 6 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 are needed to be broken/shredded so as not to be unlawfully used for military purpose.
  • Page 7 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 with the EMC and LVD directive of the European Union (EU). CE Marking 1. Product Model Model: MP1801A 43.5G MUX...
  • Page 8 C-tick Conformity marking Anritsu affixes the C-tick marking on the following product (s) in accor- dance with the regulation to indicate that they conform with the EMC framework of Australia/New Zealand C-tick marking 1. Product Model Model: MP1801A 43.5G MUX 2.
  • 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. A fuse is inserted in one of the AC power lines. Single fuse: Double fuse: A fuse is inserted in each of the AC power lines.
  • Page 10 x x x x...
  • Page 11 About This Manual This service manual written for service personnel trained by Anritsu Service Training Course and explain how to service Anritsu MP1801A 43.5G MUX, and how to troubleshoot faults. This manual explains repair by exchanging modules but does not describe parts-level repair of modules.
  • Page 12 Table of Contents For Safety ........... About This Manual........Section 1 Outline of Operation....Exchange Module Lists..........Block Diagram............... Functions of Modules............ Serial Number and Option Number ......Section 2 Troubleshooting....... General ................. Troubleshooting Preliminaries ........Required Equipment ............. Checking Power Supply..........Checking Each Module ..........
  • Page 13 Section Section 1 Outline of Operation Section Section 1 Outline of Operation 1 Outline of Operation 1 Outline of Operation Exchange Module Lists..........1-2 Block Diagram............1-3 Functions of Modules..........1-4 Serial Number and Option Number ......1-5 1- 1- 1- 1-1 1 1 1...

  • Page 14: Exchange Module Lists

    1.1 Exchange Module Lists MP1801A is composed of the 8 exchange modules listed at Table 1-1. In case MP1801A has a fault, it can be repaired by changing a module which causes the fault. Table 1-1 Exchange Module of MP1801A...

  • Page 15: Block Diagram

    10G CK AMP CK AMP1 1/64 Clock Output Divider 1/64 TRIG OUT Delay 1/1 Output Clock A05 MHL71500 CK AMP3 Fig. 1-1 Block Diagram of MP1801A Fig. 1-1 shows the block diagram of the MP1801A. 1- 1- 1- 1-3 3 3 3...

  • Page 16: Functions Of Modules

    Section 1 Outline of Operation Section 1 Outline of Operation Section 1 Outline of Operation Section 1 Outline of Operation 1.3 Functions of Modules (1) MM100246A MUX This module makes multiple 4 data signals. Input the clock signal of 25 to 43.5 GHz in this module from the syn- thesizer of the outside.

  • Page 17: Serial Number And Option Number

    Serial Number and Option Number Serial Number and Option Number Serial Number and Option Number Serial Number and Option Number 1.4 Serial Number and Option Number Serial number plate is attached to the rear panel of the instrument. Se- rial number consist of “SN” and ten digit. Serial number is unique to each instrument.
  • Page 18 Section 1 Outline of Operation Section 1 Outline of Operation Section 1 Outline of Operation Section 1 Outline of Operation 1- 1- 1- 1-6 6 6 6 ..

  • Page 19: Table Of Contents

    Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting General ..............2-2 Troubleshooting Preliminaries ........2-3 2.2.1 Preventing static electricity ......2-3 2.2.2 Connection of the problem investigation module ............2-3 2.2.3 Setting of the equipment........ 2-3 Required Equipment ..........

  • Page 20: General

    MP1801A. When the faulty module is pinpointed, replace the faulty module to new one referring to ‘Section 4 Replacing Modules’ of this manual. Initialize MP1801A after exchanging module, and confirm output wave- forms. 2- 2- 2- 2-2 2 2 2...

  • Page 21: Troubleshooting Preliminaries

    Troubleshooting Preliminaries Troubleshooting Preliminaries Troubleshooting Preliminaries Troubleshooting Preliminaries 2.2 Troubleshooting Preliminaries Check a fuse or fuses are put correctly and is not broken. 2.2.1 Preventing static electricity To prevent damage caused by electricity, the individual who is repairing should equip a wrist strap. 2.2.2 Connection of the problem investigation module Fig.

  • Page 22: Required Equipment

    Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting 2.3 Required Equipment Table 2-1 Equipments required for checking modules Equipment (Anritsu) Required Major Performance HP86100A+83480A Band: 50 GHz or more Sampling Oscilloscope Operating frequency: 100 MHz to 12.5 GHz;...

  • Page 23: Checking Power Supply

    Checking Power Supply Checking Power Supply Checking Power Supply Checking Power Supply 2.4 Checking Power Supply 2.4.1 Checking Voltage Between Power Supply Pins Check the following pins (Fig. 2-2) with check list (Table 2-1). Fig. 2-2 Power Supply Table 2-3 Voltage check Number Voltage ①...

  • Page 24: Check The Voltage Of A01 Zero Cross

    Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting 2.4.2 Check the voltage of A01 ZERO CROSS Fig. 2-3 A01 ZERO CROSS Table 2-4 Voltage check Number Voltage AC85 to 265V AC85 to 265V Note: Switch S1 and S2 are the condition of ON. 2- 2- 2- 2-6 6 6 6...

  • Page 25: Check The Voltage Of A02 Power Supply

    Checking Power Supply Checking Power Supply Checking Power Supply Checking Power Supply 2.4.3 Check the voltage of A02 Power Supply Fig. 2-4 A02 Power Supply Table 2-5 Voltage check Number Voltage −5V −5V +12V +12V −12V −12V −5V X2 to X8 −5V −12V +12V...

  • Page 26: Checking Each Module

    Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting 2.5 Checking Each Module 2.5.1 General If there is faulty module, it can be found by checking each waveform. 2.5.2 Searching the troubled module General trouble and cause are shown below. Refer to ‘Section 3 Checking Equipment’...
  • Page 27 Checking Each Module Checking Each Module Checking Each Module Checking Each Module ‘1/1 Output Clock’ OUTPUT CHECK CHECK CHECK CHECK Check the output voltage A01 ZERO CROSS is faulty. of MM100241A A01 ZERO CROSS Check the output voltage of POWER SUPPLY is faulty. POWER SUPPLY.
  • Page 28 Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting ‘1/1 Output Data’ OUTPUT CHECK CHECK CHECK CHECK Check the output voltage of A01 ZERO CROSS is faulty. MM100241A A01 ZERO CROSS Check the output voltage of POWER SUPPLY is faulty. POWER SUPPLY.
  • Page 29 Checking Each Module Checking Each Module Checking Each Module Checking Each Module ‘1/4 Clock Output’ OUTPUT CHECK CHECK CHECK CHECK Check the output voltage of A01 ZERO CROSS is faulty. MM100241A A01 ZERO CROSS Check the output voltage of POWER SUPPLY is faulty. POWER SUPPLY.
  • Page 30 Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Check the output waveform A03 10G CK AMP is faulty. of A03 10G CK AMP. Fig. 2-33 to Fig. 2-36 Output waveform Check the output waveform Delay is faulty. of Delay.
  • Page 31 Checking Each Module Checking Each Module Checking Each Module Checking Each Module ‘1/64 Clock Output’ OUTPUT CHECK CHECK CHECK CHECK Check the output voltage of A01 ZERO CROSS is faulty. MM100241A A01 ZERO CROSS Check the output voltage of POWER SUPPLY is faulty. POWER SUPPLY.
  • Page 32 Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Check the output waveform A03 10G CK AMP is faulty. of A03 10G CK AMP. Fig. 2-33 to Fig. 2-36 Output waveform Check the input waveform A04 1/64 TRIG OUT is faulty. of A04 1/64 Trig Output.
  • Page 33 Checking Each Module Checking Each Module Checking Each Module Checking Each Module WAVEFORM (MP1801A) • 43.5GHz Output of CK AMP1 200 mV/div, 10 ps/div Fig. 2-9 500 mV/div, 10 ps/div Fig. 2-10 2- 2- 2- 2-15...
  • Page 34 Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting • 40GHz Output of CK AMP1 200 mV/div, 10 ps/div Fig. 2-11 500 mV/div, 10 ps/div Fig. 2-12 2- 2- 2- 2-16...
  • Page 35 Checking Each Module Checking Each Module Checking Each Module Checking Each Module • 43.5GHz Output of U5N1 Delay OUT 200 mV/div, 10 ps/div Fig. 2-13 500 mV/div, 10 ps/div Fig. 2-14 2- 2- 2- 2-17...
  • Page 36 Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting • 40GHz Output of U5N1 Delay OUT 200 mV/div, 10 ps/div Fig. 2-15 500 mV/div, 10 ps/div Fig. 2-16 2- 2- 2- 2-18...
  • Page 37 Checking Each Module Checking Each Module Checking Each Module Checking Each Module • 43.5Gbit/s PRBS 2 -1 Output of MUX DATA OUT 100 mV/div, 10 ps/div Fig. 2-17 200 mV/div, 10 ps/div Fig. 2-18 2- 2- 2- 2-19...
  • Page 38 Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting • 40Gbit/s PRBS 2 -1 Output of MUX DATA OUT 100 mV/div, 10 ps/div Fig. 2-19 200 mV/div, 10 ps/div Fig. 2-20 2- 2- 2- 2-20...
  • Page 39 Checking Each Module Checking Each Module Checking Each Module Checking Each Module • 43.5Gbit/s PRBS 2 -1 Output of MUX XDATA OUT 100 mV/div, 10 ps/div Fig. 2-21 200 mV/div, 10 ps/div Fig. 2-22 2- 2- 2- 2-21...
  • Page 40 Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting • 40Gbit/s PRBS 2 -1 Output of MUX XDATA OUT 100 mV/div, 10 ps/div Fig. 2-23 200 mV/div, 10 ps/div Fig. 2-24 2- 2- 2- 2-22...
  • Page 41 Checking Each Module Checking Each Module Checking Each Module Checking Each Module • 43.5GHz Output of MUX CK IN 50 mV/div, 10 ps/div Fig. 2-25 100 mV/div, 10 ps/div Fig. 2-26 2- 2- 2- 2-23...
  • Page 42 Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting • 40GHz Output of MUX CK IN 50 mV/div, 10 ps/div Fig. 2-27 100 mV/div, 10 ps/div Fig. 2-28 2- 2- 2- 2-24...
  • Page 43 Checking Each Module Checking Each Module Checking Each Module Checking Each Module • 43.5GHz (10.875GHz) Output of MUX CK OUT 100 mV/div, 20 ps/div Fig. 2-29 200 mV/div, 20 ps/div Fig. 2-30 2- 2- 2- 2-25...
  • Page 44 Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting • 40GHz (10GHz) Output of MUX CK OUT 100 mV/div, 20 ps/div Fig. 2-31 200 mV/div, 20 ps/div Fig. 2-32 2- 2- 2- 2-26...
  • Page 45 Checking Each Module Checking Each Module Checking Each Module Checking Each Module • 43.5GHz (10.875GHz) Output of A03 10G CK AMP OUT (Input of the U5N1) 200 mV/div, 50 ps/div Fig. 2-33 500 mV/div, 50 ps/div Fig. 2-34 2- 2- 2- 2-27...
  • Page 46 Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting • 40GHz (10GHz) Output of A03 10G CK AMP OUT (Input of the U5N1) 200 mV/div, 20 ps/div Fig. 2-35 500 mV/div, 20 ps/div Fig. 2-36 2- 2- 2- 2-28...
  • Page 47 Checking Each Module ecking Each Module ecking Each Module ecking Each Module • 43.5GHz (10.875GHz) Output of 10G CK OUT (Output of the U5N1) 200 mV/div, 50 ps/div Fig. 2-37 500 mV/div, 50 ps/div Fig. 2-38 2- 2- 2- 2-29...
  • Page 48 Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting • 40GHz (10GHz) Output of 10G CK OUT (Output of the U5N1) 200 mV/div, 50 ps/div Fig. 2-39 500 mV/div, 50 ps/div Fig. 2-40 2- 2- 2- 2-30...
  • Page 49 Checking Each Module Checking Each Module Checking Each Module Checking Each Module • 43.5GHz (0.678GHz) Output of A04 1/64 TRIG OUT 200 mV/div, 500 ps/div Fig. 2-41 500 mV/div, 500 ps/div Fig. 2-42 2- 2- 2- 2-31...
  • Page 50 Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting Section 2 Troubleshooting • 40GHz (0.625GHz) Output of A04 1/64 TRIG OUT 200 mV/div, 500 ps/div Fig. 2-43 500 mV/div, 500 ps/div Fig. 2-44 2- 2- 2- 2-32 32..
  • Page 51 Section Section Section Section 3 Checking Equipment 3 Checking Equipment 3 Checking Equipment 3 Checking Equipment General ..............3-2 Block Diagram............3-3 Location of Top Views ..........3-4 Location of Bottom Views .......... 3-5 Typical Output Waveform .......... 3-6 3- 3- 3- 3-1 1 1 1...

  • Page 52: General

    Section Section Section Section 3 3 3 3 Checking Equipment Checking Equipment Checking Equipment Checking Equipment 3.1 General The arrangement of the part of the block diagram and the inside are shown in this section. 3- 3- 3- 3-2 2 2 2...

  • Page 53: Block Diagram

    Block Diagram Block Diagram Block Diagram Block Diagram 3.2 Block Diagram Fig. 3-1 shows the MP1801A block diagram. 1/4 Data Input 1 1/1 Output Data 40G MUX 1/4 Data Input 2 A08 MHL71510 A05 MHL71490 DATA AMP 1/4 Data Input 3...

  • Page 54: Location Of Top Views

    Section Section Section 3 3 3 3 Checking Equipment Checking Equipment Checking Equipment Checking Equipment 3.3 Location of Top Views Fig. 3-2 shows the MP1801A location of Top view. Fig. 3-2 Top View 3- 3- 3- 3-4 4 4 4...

  • Page 55: Location Of Bottom Views

    Location of Bottom Views Location of Bottom Views Location of Bottom Views Location of Bottom Views 3.4 Location of Bottom Views Fig. 3-3 shows the MP1801A location of Bottom view. Fig. 3-3 Bottom View 3- 3- 3- 3-5 5 5 5...

  • Page 56: Typical Output Waveform

    Section 3 3 3 3 Checking Equipment Checking Equipment Checking Equipment Checking Equipment 3.5 Typical Output Waveform Fig. 3-4 to Fig. 3-19 shows the DATA output waveform, CK output wave- form, and DATA input waveform of MP1801A. 3- 3- 3- 3-6 6 6 6...
  • Page 57 Typical Output Waveform Typical Output Waveform Typical Output Waveform Typical Output Waveform OUTPUT WAVEFORM (MP1801A+V120MM-30CM cable) • 43.5Gbit/s PRBS 2 -1 DATA OUT 500 mV/div, 10 ps/div Fig. 3-4 1 V/div, 10 ps/div Fig. 3-5 3- 3- 3- 3-7 7 7 7...
  • Page 58 Section Section Section Section 3 3 3 3 Checking Equipment Checking Equipment Checking Equipment Checking Equipment • 43.5Gbit/s PRBS 2 -1 DATA OUT 500 mV/div, 10 ps/div Fig. 3-6 1 V/div, 10 ps/div Fig. 3-7 3- 3- 3- 3-8 8 8 8...
  • Page 59 Typical Output Waveform Typical Output Waveform Typical Output Waveform Typical Output Waveform • 40Gbit/s PRBS 2 -1 DATA OUT 500 mV/div, 10 ps/div Fig. 3-8 1 V/div, 10 ps/div Fig. 3-9 3- 3- 3- 3-9 9 9 9...
  • Page 60 Section Section Section Section 3 3 3 3 Checking Equipment Checking Equipment Checking Equipment Checking Equipment • 40Gbit/s PRBS 2 -1 DATA OUT 500 mV/div, 10 ps/div Fig. 3-10 1 V/div, 10 ps/div Fig. 3-11 3- 3- 3- 3-10...
  • Page 61 Typical Output Waveform Typical Output Waveform Typical Output Waveform Typical Output Waveform OUTPUT WAVEFORM (MP1801A+V120MM-30CM cable) • 43.5GHz CK OUT 200 mV/div, 5 ps/div Fig. 3-12 500 mV/div, 10 ps/div Fig. 3-13 3- 3- 3- 3-11 11 11...
  • Page 62 Section Section Section Section 3 3 3 3 Checking Equipment Checking Equipment Checking Equipment Checking Equipment • 40GHz CK OUT 200 mV/div, 5 ps/div Fig. 3-14 500 mV/div, 10 ps/div Fig. 3-15 3- 3- 3- 3-12...
  • Page 63 Typical Output Waveform Typical Output Waveform Typical Output Waveform Typical Output Waveform INPUT WAVEFORM (MP1801A) • 10.875Gbit/s PRBS 2 -1 DATA IN 200 mV/div, 50 ps/div Fig. 3-16 500 mV/div, 50 ps/div Fig. 3-17 3- 3- 3- 3-13...
  • Page 64 Section Section Section Section 3 3 3 3 Checking Equipment Checking Equipment Checking Equipment Checking Equipment • 10Gbit/s PRBS 2 -1 DATA IN 200 mV/div, 50 ps/div Fig. 3-18 500 mV/div, 50 ps/div Fig. 3-19 3- 3- 3- 3-14 14..
  • Page 65 Section Section Section Section 4 Replacing Modules 4 Replacing Modules 4 Replacing Modules 4 Replacing Modules Disassembly............... 4-2 4.1.1 Outside Disassembly........4-2 4.1.2 Front Panel and Rear Panel Disassembly ..4-4 4.1.3 Top Section Disassembly......4-6 4.1.4 Bottom Section Disassembly......4-8 4.1.5 POWER SUPPLY Removal......

  • Page 66: Replacing Modules

    Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules 4.1 Disassembly This section describes how to disassemble MP1801A. Refer to this section. 4.1.1 Outside Disassembly Table 4-1 Parts list for Outside disassembly Description Drawing No.
  • Page 67 Disassembly Disassembly Disassembly Disassembly Fig. 4-1 Outside disassembly diagram 4- 4- 4- 4-3 3 3 3...

  • Page 68: Front Panel And Rear Panel Disassembly

    Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules 4.1.2 Front Panel and Rear Panel Disassembly Table 4-2 Parts list for Front Panel disassembly Description Drawing No. Remark Panel,Front 422B18316 Panel,Rear 423B18322 Knob J4W11698 Screws 3FPS8B3 Screws 3NPS8B3+SW...
  • Page 69 Disassembly Disassembly Disassembly Disassembly Fig. 4-2 Front Panel and Rear Panel disassembly diagram 4- 4- 4- 4-5 5 5 5...

  • Page 70: Top Section Disassembly

    Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules 4.1.3 Top Section Disassembly Table 4-3 Parts list for Display removal Description Drawing No. Remark Bracket 44B110663 Bracket 44B110666 Plate 432B47859 Bracket 442B110661 Bracket 442B110662 Plate 44B110853...
  • Page 71 Disassembly Disassembly Disassembly Disassembly Fig. 4-3 Top Section Disassembly diagram 4- 4- 4- 4-7 7 7 7...

  • Page 72: Bottom Section Disassembly

    Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules 4.1.4 Bottom Section Disassembly Table 4-4 Parts list for Bottom Section disassembly Description Drawing No. Remark Plate 44B110926 Plate 442B110793 Screws 2FPS5B3 Z4B300001 Screws Z4B300006 2.5NPS5B3+SW Screws 3NPS8B3+SW...
  • Page 73 Disassembly Disassembly Disassembly Disassembly Fig. 4-4 Bottom Section Disassembly diagram 4- 4- 4- 4-9 9 9 9...

  • Page 74: Power Supply Removal

    Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules 4.1.5 POWER SUPPLY Removal Table 4-5 Parts list for POWER SUPPLY removal Description Drawing No. Remark Cover 432B47871 Bracket 442B110675 Plate,Left Side 432B47867 Nuts 2PN-B3 Z4B300016 Washers 2SW-PB3 Z4B300020...
  • Page 75 Disassembly Disassembly Disassembly Disassembly Fig. 4-5 POWER SUPPLY removal diagram 4- 4- 4- 4-11 11 11...

  • Page 76: Inspection Method

    [1] Turn on the synthesizer and PPG while setting DATA and CK out- puts (to MP1801A 43.5G MUX) at Off. [2] Set MP1801A rear-panel power switch to On, then front-panel power switch to On. [3] Turn On the synthesizer and PPG outputs.
  • Page 77 Inspection method Inspection method Inspection method Inspection method Power-supply voltage adjustment G1-SW REGULATOR (JWT75-522/A)+ A01 ZERO CROSS board [1] Confirm the power fuses. [2] Remove DF1B cable W15. [3] Turn On rear-panel power switch. [4] Confirm the impedance between inlet N-L terminals approx. 91Ω. [5] Confirm the impedance between inlet N-GND terminals approx.
  • Page 78 Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules A06 AMP BIAS 2 board (CK inpit HIC adjustment) Coarse-adjust as described below before connecting to HIC. [1] Turn On the power, then adjust R1 VR to make TP2 voltage at 5.0 V. [2] Adjust R3 VR to make TP3 voltage at 5.0 V.
  • Page 79 A05/07 AMP BIAS board (DATA HIC adjustment) Perform the coarse-adjustment as described below, before connecting HIC. Use the MP1801A rear-panel 1/64 CK as Trigger signal for observation by oscilloscope. [1] Turn the power On, then adjust R1 VR so that TP2 voltage becomes 5.0 V.
  • Page 80 A05/07 AMP BIAS board (CK output adjustment) Perform the coarse-adjustment as described below, before connecting HIC. Use the MP1801A rear-panel 1/64 CK as Trigger signal for observation by oscilloscope. [1] Turn the power On, then adjust R1 VR so that TP2 voltage becomes 5.0 V.
  • Page 81 Inspection method Inspection method Inspection method Inspection method [Inspection] DATA ･ DATA output (Data IN 6 dBm) Setup 1/64 CK 1/4 DATA 1/1 CK Sampling oscilloscope --- OSM cable 1/4 CK --- V120MM cable 1/1 CK IN Synthesizer Output amplitude [1] Perform measurement using Vtop (VOH)/Vbase (VOL) of Mask Mode of sampling oscilloscope.
  • Page 82 Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules Cross point [5] Perform measurement using Crossing Percentage of Mask Mode of sampling oscilloscope. [1] Output amplitude Distortion Fall Time Jitter Rise Time Clock output (Clock IN 0.65V/1.5V) Setup 1/64 CK 1/1 CK...
  • Page 83 Inspection method Inspection method Inspection method Inspection method Delay Monitoring 1/4 CK OUT with a sampling oscilloscope, rotate 1/4 CK Delay to measure the phase width. 1/4 Clock output 1/64 CK Sampling oscilloscope 1/4 CK --- OSM cable 1/1 CK IN --- V120MM cable Synthesizer Output amplitude...
  • Page 84 Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules 1/64 Clock output Setup 1/64 CK Sampling oscilloscope 1/4 CK --- OSM cable 1/1 CK IN SYNC OUT --- V120MM cable Synthesizer Output amplitude Perform measurement using Vtop (VOH)/Vbase (VOL) of Mask Mode of sampling oscilloscope.

  • Page 85: Total Circuit Diagram

    Total Circuit Diagram Total Circuit Diagram Total Circuit Diagram Total Circuit Diagram 4.3 Total Circuit Diagram 4- 4- 4- 4-21...
  • Page 86 Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules Section 4 Replacing Modules 4- 4- 4- 4-22 22..
  • Page 87 MP1801A 43.5G MUX Service Manual Read this manual before using the equipment. Keep this manual with the equipment.
  • Page 89 ANRITSU CORPORATION 5-10-27, Minamiazabu, Minato-ku, Tokyo 106-8570 Japan / Phone: 81-3-3446-1111 Document No.: M–W1961BE Printed in Japan...

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