Equipment information
Fluke PM6690 Counter
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Model:
PM6690
Date:
2006
Category:
Group:
Description:
Timer / Counter / Analyzer
Manual Type:
Service Manual
Pages:
200
Size:
9.15 Mbytes (9593630 Bytes)
Language:
english
Revision:
4
Manual-ID:
4822 872 20306
Date:
2006 05 01
Quality:
Electronic document, no scan, very well readable.
Upload date:
2020 07 22
MD5:
a67835ce096e2049e143c33d1aff880d
Downloads:
362
Information
1
GENERAL INFORMATION ... III
Safety Instructions
Caution and Warning Statements ... 1-2
Grounding ... 1-2
Operation ... 1-2
Line Voltage ... 1-4
2 Performance Check
General Information ... 2-2
Test Equipment ... 2-2
Preparations ... 2-2
Front Panel Controls ... 2-2
Short Form Specification Test ... 2-4
Rear Inputs/Outputs ... 2-6
Measuring Functions ... 2-6
Check of HOLD OFF Function ... 2-7
RF Options ... 2-7
3 Disassembly
Removing the Cover ... 3-2
Fan ... 3-3
Prescaler Options ... 3-3
OCXO Options ... 3-4
4 Circuit Descriptions
Version A ... 4-3
Block Diagram Description ... 4-4
General ... 4-4
Block Diagram ... 4-4
Hardware Functional Description ... 4-6
Front Unit ... 4-6
Main Board ... 4-6
Test Routines ... .
4-10
Version B ... .
4-11
Block Diagram Description ... .
4-12
General ... .
4-12
Block Diagram ... 4-12
Hardware Functional Description ... 4-14
Front Unit ... 4-14
Main Board ... 4-14
Test Routines ... 4-18
5 Corrective & Preventive Maintenance
Introduction ... 5-2
Calibration ... 5-2
Instructions for Firmware Upgrade ... 5-2
Utility Program ... 5-3
Fan Replacement ... 5-3
Other Important Information ... 5-3
6 Repair
Version A ... 6-3
Troubleshooting ... 6-4
General ... 6-4
Power supply ... 6-4
Input Amplifiers ... 6-8
Timebase Reference Circuits ... 6-12
Prescalers ... 6-15
Microprocessor & Memories ... 6-15
Microprocessor Bus & Interfaces ... 6-21
Measuring Logic ... 6-27
Version B ... 6-31
Troubleshooting ... 6-32
General ... 6-32
Power supply ... 6-32
Input Amplifiers ... 6-36
Timebase Reference Circuits ... 6-40
Prescaler ... 6-43
Microprocessor & Memories ... 6-43
Microprocessor Bus & Interfaces ... 6-49
Measuring Logic ... 6-55
Safety Inspection and Test After Repair ... 6-59
General Directives ... 6-59
7 Calibration Adjustments
Calibration ... 7-2
General Principles ... 7-2
The Calibration Submenu ... 7-3
Frequency Reference ... 7-3
Voltage Reference ... 7-5
Calibration Subsystem
Command Reference ... 7-6
Adjustments ... 7-11
Preparations ... 7-11
Input Amplifiers ... 7-12
Power supply ... 7-13
External Reference Input ... 7-13
Internal Reference Oscillators ... 7-14
RF Input 3 GHz ... 7-14
8 Replacement Parts
Introduction ... 8-2
Mechanical Parts ... 8-3
Main Board, Version A ... 8-5
Front Unit ... 8-14
Main Board, Version B ... 8-16
Parts Unique to Version A ... 8-26
Parts Unique to Version B ... 8-26
Parts Common to Version A and Version B ... 8-26
9 Schematic Diagrams
How to Read the Diagrams ... 9-2
Version A ... 9-3
Version B ... 9-25
10 Appendix
How to Replace Surface Mounted Devices ... 10-2
Electrostatic Discharge ... 10-3
Glossary ... 10-3
11 Index