Keysight NFA Series Noise Figure Analyzers Service Guide 175
RF Section Troubleshooting (N8973B, 74B, 75B Analyzers)
Troubleshooting
2. L.O. Synthesizer Assembly Verification
Press the following keys on the analyzer:
MODE/MEAS, Spectrum Analyzer, OK,
Mode Preset
FREQ, 5 GHz
Zero Span
Refer to Figure 4-24. Disconnect cable W4 at A14J740 of the L.O. Synthesizer
Assembly (1).
Figure 4-24 W4 and W6 Location
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