258 Keysight NFA Series Noise Figure Analyzers Service Guide
Analog/Digital IF Troubleshooting
25 MHz BW IF Section
Verifying the 300 MHz L.O. Input Power from the A16 Reference
Assembly
1. Refer to Figure 7-5, carefully disconnect the W14 at A2J300
Figure 7-5 A2 Analog I.F. Cables
2. Connect the W14 cable to the MMCX female to SMA female connector.
Use an appropriate cable to go from the SMA connector to the RF input of
a functioning spectrum analyzer.
3. Press Freq, 300 MHz, Span, 1 MHz, Amplitude, 10 dBm, Peak Search on
the functioning spectrum analyzer.
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