Keysight NFA Series Noise Figure Analyzers Service Guide 173
RF Section Troubleshooting (N8973B, 74B, 75B Analyzers)
Troubleshooting
Troubleshooting a High Band Problem
1. Reference Assembly Verification
Refer to Figure 4-22. Remove cable W19 from A9 Input Attenuator A (1).
Measure the 4.8 GHz calibrator signal on the cable end with a functioning
Spectrum Analyzer.
Figure 4-22 W19 Location
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