Fluke 78 - Table of Contents

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Table of Contents
Chapter Title Page
1 Introduction and Specifications.......................................................... 1-1
1-1. Introduction ........................................................................................... 1-3
1-2. Organization of the Service Manual ..................................................... 1-3
1-3. Conventions ........................................................................................... 1-4
1-4. Specifications ........................................................................................ 1-4
2 Theory of Operation............................................................................. 2-1
2-1. Introduction ........................................................................................... 2-3
2-2. Functional Block Description ............................................................... 2-3
2-3. Circuit Descriptions .............................................................................. 2-4
2-4. Input Overload Protection ................................................................. 2-4
2-5. Rotary Knob Switch ......................................................................... 2-4
2-6. Input Signal Conditioning Circuits .................................................. 2-4
2-7. Volts Functions ............................................................................ 2-4
2-8. Ohms Function ............................................................................ 2-5
2-9. Continuity .................................................................................... 2-6
2-10. Temperature Function .................................................................. 2-6
2-11. Diode Test Function .................................................................... 2-7
2-12. RPM Function .............................................................................. 2-7
2-13. Current Function .......................................................................... 2-7
2-14. Analog Section of Integrated Multimeter IC (U1) .......................... 2-7
2-15. Frequency Measurements ............................................................ 2-9
2-16. Dwell and Duty Cycle Measurements ......................................... 2-9
2-17. Microcomputer Control .................................................................... 2-9
2-18. Peripherals to U1 ............................................................................... 2-9
2-19. AC Buffer ..................................................................................... 2-9
2-20. AC converter ................................................................................. 2-9
2-21. Active Filter .................................................................................. 2-9
2-22. A/D Converter .............................................................................. 2-9
2-23. Beeper ........................................................................................... 2-10
2-24. Power Supply ................................................................................ 2-10
2-25. Display .............................................................................................. 2-10
3 Maintenance......................................................................................... 3-1