6.3.2
ADC Reference Adjustments ................................................................................... 24
6.3.3
Calibration Connections .......................................................................................... 25
6.3.4
Offset Adjustment ................................................................................................... 25
6.3.5
-5 Volt Reference Adjustments ............................................................................... 25
6.3.6
Display Adjustments ............................................................................................... 25
6.3.7
Linearity Adjustments ............................................................................................. 26
6.3.8
20A Range Adjustments .......................................................................................... 26
6.3.9
2A Range Adjustments ............................................................................................ 26
6.3.10
0.2A Range Adjustments ......................................................................................... 26
6.3.11
Watts Zero and Offset Adjustments ....................................................................... 26
6.3.12
Full Scale Watts Adjustments ................................................................................. 26
6.3.13
AC Adjustments and Checks ................................................................................... 27
Chapter 7
Theory of Operations .............................................................................................. 28
7.1
Troubleshooting ............................................................................................................. 28
7.1.1
Component Replacement ....................................................................................... 28
7.1.2
Finding the Faulty Component ............................................................................... 29
7.2
Functional Descriptions .................................................................................................. 29
7.3
Detailed Circuit Descriptions .......................................................................................... 30
7.3.1
Power Supply .......................................................................................................... 31
7.3.2
Voltage Amplifier and Scaling ................................................................................. 31
7.3.3
Current Amplifiers and Scaling ............................................................................... 32
7.3.4
Peak Detector/Indicators ........................................................................................ 34
7.3.5
Analog to Digital Converters ................................................................................... 34
7.3.5.1
Volts/Amps Display ............................................................................................. 34
7