Fluke 77 Series III, Руководство по обслуживанию

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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. Detailed Description ................................................... 2-3
2-4. Voltage Signal Conditioning .................................. 2-3
2-5. Current Conditioning .............................................. 2-4
2-6. Ohms ....................................................................... 2-4
2-7. Additional Circuitry ................................................ 2-4
2-8. AC Converter ..................................................... 2-5
2-9. Active Filter ....................................................... 2-5
2-10. Rotary Switch ..................................................... 2-5
2-11. A/D Conversion .................................................. 2-5
3 Maintenance ................................................................ 3-1
3-1. Introduction ................................................................. 3-3
3-2. PCA Access and General Maintenance ...................... 3-3
3-3. Display Access ............................................................ 3-4
3-4. Cleaning ...................................................................... 3-4
3-5. Performance Test ........................................................ 3-7
3-6. Initial Procedure ..................................................... 3-7
3-7. DC Voltage Test ..................................................... 3-7
3-8. AC Voltage Test ......................................................... 3-8
3-9. Resistance Test ....................................................... 3-8