Equipment information

Fluke PM6690 Counter
Manufacturer:
Model:
PM6690
Date:
2006
Category:
Group:
Description:
Timer / Counter / Analyzer
Service Manual
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

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