Keysight N5227A - Information in this Chapter; Chapter Five At-A-Glance

5-2 Service Guide N5227-90001
Theory of Operation PNA Series Microwave Network Analyzers
Information in This Chapter N5227A
Information in This Chapter
This chapter provides a general description of the operating theory of the N5227A 2-port and 4-port PNA
microwave network analyzers.
• Theory of operation is explained to the assembly level only.
• Component-level circuit theory is not provided.
• Simplified block diagrams are included for each functional group. More detailed block diagrams are
located at the end of Chapter 4, “Troubleshooting.”
IMPORTANT Although simplified block diagrams are included within the description of each functional
group, it is recommended that the more detailed block diagrams, located at the end of
Chapter 4, be available for reference, as you read the information in this chapter.
Chapter Five at-a-Glance
Section Title Summary of Content Start Page
Network Analyzer System Operation A summary of the theory of operation for the analyzer.
A summary of the operation of the major functional
groups of the analyzer.
Page 5-3
Synthesized Source Group Operation Operation of the assemblies associated with the source
group.
Page 5-7
Signal Separation Group Operation Operation of the assemblies associated with signal
separation, including the operation of source attenuators
and bias tees.
Page 5-20
Receiver Group Operation Operation of the assemblies associated with the receiver
group including the operation of receiver attenuators.
Page 5-25
Digital Processing and Digital
Control Group Operation
Operation of the assemblies associated with digital
processing and digital control.
Page 5-31
Power Supply Group Operation Operation of the power supply assembly group. Page 5-36