Keysight Technologies N9030B Service Manual page 244

Analog/Digital IF Troubleshooting
A3 Digital IF Troubleshooting
Figure 7-9 A3 Digital IF Cables
11.Connect the W26 or W40 cable to the MMCX female to SMA female
12.Press Freq, 250 MHz, Span, 1 MHz, Peak Search on the functioning
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connector. Use an appropriate cable to go from the SMA connector to the
RF input of a functioning spectrum analyzer to verify the 250 MHz I.F.
signal frequency and amplitude is correct.
spectrum analyzer.
N9030B PXA Signal Analyzer Service Guide