254 Keysight NFA Series Noise Figure Analyzers Service Guide
Analog/Digital IF Troubleshooting
25 MHz BW IF Section
8. Carefully disconnect the W15 or W36 cable at A13J7 as shown in Figure
7-1.
Figure 7-1 A13 RF Front End Assembly - RF/Microwave Instruments
9. Connect A13J7 to a functioning spectrum analyzer using the appropriate
SMA connectors and cables.
10.Press Freq, 322.5 MHz, Span, 1 MHz, Peak Search on the functioning
spectrum analyzer
11.The analyzer should read 322.5 MHz at −30 dBm ± 3 dBm as shown in
Figure 7-2.
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