Keysight N5221A/22A Service Guide 5-3
Theory of Operation
Network Analyzer System Operation
Figure 5-2 2-Port System Simplified Block Diagram
Functional Groups of the Network Analyzer
The operation of the network analyzer can be separated into major functional
groups. Each group consists of assemblies that perform a distinct function in
the instrument. Some of the assemblies are related to more than one group,
and all of the groups, to some extent, are interrelated and affect each other's
performance. The major functional groups are:
— Synthesized Source Group
— Signal Separation Group
— Receiver Group
— Digital Processor and Digital Control Group
— Power Supply Group
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