146 Keysight NFA Series Noise Figure Analyzers Service Guide
RF Section Troubleshooting (N8973B, 74B, 75B Analyzers)
Troubleshooting
Troubleshooting a Low Band Problem
1. Reference Assembly Verification
Remove cable W19 from A9 Input Attenuator A (1 ) and measure the 50 MHz
calibrator signal on the cable end with a functioning Spectrum Analyzer. Refer
to Figure 4-5.
Figure 4-5 W19 Location
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