Keysight E3631A, Service Manual

Page: 99 / 131

Theory of Operation 4
Keysight E3631A Service Guide 95
4 Theory of Operation
This chapter provides block diagram level descriptions of the power supply. The
descriptions provide a basic understanding of circuit operation and are intended
as an aid in troubleshooting. It is assumed in the following discussions that you
are familiar with the operating and programming instructions presented in the
E3631A User's Guide. Subjects covered include the following:
– Block Diagram Overview 96
– AC Input and Bias Supplies 98
– Floating Logic 99
– D-to-A Converter 101
– A-to-D Converter 102
– Power Mesh and Control 103
– Earth-Referenced Logic 104
– Front Panel 105