Theory of Operation
This chapter is organized to provide descriptions of the circuitry
contained on each schematic shown in chapter 9. A block diagram
overview is provided in this chapter followed by more detailed
descriptions of the circuitry contained in the schematics chapter.
• Block Diagram 93
• Front/Rear Selection 94
• Function Switching 95
• DC Amplifier 96
• Ohms Current Source 98
• AC Circuit 99
• A-to-D Converter 101
• Floating Logic 103
• Earth-Referenced Logic 105
• Power Supplies 106
• Front Panel 107
The self-test procedures are described in chapter 6.
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