Fluke 123B/S Service Manual - Page 29
Circuit Descriptions
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Chapter 3 Circuit Descriptions Title Page 3.1 Introduction 3-3 3.2 Block Diagram 3-3 3.2.1 Channel A, Channel B Measurement Circuits 3-4 3.2.2 Trigger Circuit 3-4 3.2.3 Digital Circuit 3-5 3.2.4 Power Circuit 3-6 3.2.5 Start-up Sequence, Operating Modes 3-7 3.3 Detailed Circuit Descriptions 3-9 3.3.1 Power Circuit 3-9 3.3.2 Channel A - Channel B Measurement Circuits 3-15 3.3.3 Trigger Circuit 3-20 3.3.4 Digital Circuit and ADC's 3-25 3-1
3-1
Chapter 3
Circuit Descriptions
Title
Page
3.1 Introduction
.................................................................................................
3-3
3.2 Block Diagram
............................................................................................
3-3
3.2.1 Channel A, Channel B Measurement Circuits
.....................................
3-4
3.2.2 Trigger Circuit
.....................................................................................
3-4
3.2.3 Digital Circuit
......................................................................................
3-5
3.2.4 Power Circuit
.......................................................................................
3-6
3.2.5 Start-up Sequence, Operating Modes
..................................................
3-7
3.3 Detailed Circuit Descriptions
......................................................................
3-9
3.3.1 Power Circuit
.......................................................................................
3-9
3.3.2 Channel A - Channel B Measurement Circuits
...................................
3-15
3.3.3 Trigger Circuit
.....................................................................................
3-20
3.3.4 Digital Circuit and ADC’s
...................................................................
3-25