Table Of Contents - Fluke 39 Service Manual

Chapter
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. General Information ............................................................................. 1-4
1-5. Description ....................................................................................... 1-4
1-6. Power Requirements ........................................................................ 1-4
1-7. Options, Accessories and Related Equipment.................................. 1-4
1-8. Operating Instructions...................................................................... 1-5
1-9. Specifications ....................................................................................... 1-5
2 Theory of Operation........................................................................... 2-1
2-1. Introduction .......................................................................................... 2-3
2-2. Functional Block Description............................................................... 2-3
2-3. Circuit Operation .................................................................................. 2-5
2-4. Power-Up Sequence ......................................................................... 2-5
2-5. Normal Operation ............................................................................ 2-6
2-6. Circuit Descriptions.............................................................................. 2-6
2-7. Power Supplies................................................................................. 2-6
2-8.
2-9.
2-10.
2-11.
2-12.
2-13.
2-14.
2-15.
2-16.
2-17. Input Conditioning ........................................................................... 2-8
2-18.
2-19.
2-20.
2-21.
2-22.
Title
Power-On Circuit......................................................................... 2-6
VCC ............................................................................................. 2-6
-22 Volts ...................................................................................... 2-7
VEE.............................................................................................. 2-7
VDD............................................................................................. 2-7
VSS .............................................................................................. 2-7
VREF ........................................................................................... 2-7
Low Battery Detection................................................................. 2-8
Power Reset ................................................................................. 2-8
Difference Amplifier (Voltage Input).......................................... 2-8
Protection Circuit (Current Channel)........................................... 2-8
Gain Amplifier............................................................................. 2-8
Latch (U1).................................................................................... 2-8
Anti-Alias Filter........................................................................... 2-9
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