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Keysight NFA Series Noise Figure Analyzers
Service Guide
7 Analog/Digital IF Troubleshooting
What You Will Find in This Chapter
The following information is presented in this chapter:
1. Theory of operation of the IF section.
2. Isolating the cause of a hardware problem by verifying the functionality of
assemblies in the IF section signal path.
The NFA Series Noise Figure analyzers come standard with 25 MHz analyzer
BW.
The following sections provide for each assembly a description of how the
assembly works and then gives information to help you troubleshoot the
assembly. Each description explains the purpose of the assembly,
describes the main components, and lists external connections to the
assembly.
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