Agilent Technologies 34970A Service Manual page 120

Theory of Operation
This chapter is organized to provide descriptions of the circuitry
contained on each schematic shown in chapter 8. A block diagram
overview is provided followed by more detailed descriptions of the
circuitry contained in the schematics chapter.
• System Block Diagram, on page 119
• Floating Logic, on page 120
• Memory, on page 123
• Earth-Referenced Logic, on page 124
• Power Supplies, on page 125
• Front Panel, on page 127
• Backplane, on page 128
• Internal DMM, on page 129
• Switch Modules, on page 138
• Multifunction Module, on page 151
The self-test procedures are described in chapter 6.
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