Keysight Technologies X Series Service Manual page 288

Analog/Digital IF Troubleshooting
40 MHz BW IF Section
9. Connect the W41 cable to the MMCX female to SMA female connector.
10.Press Freq, 22.5 MHz, Span, 1 MHz, Peak Search on the functioning
11.The analyzer marker should read 22.5 MHz at −25 dBm ± 4 dB as shown in
Figure 7-15 A2 Analog IF Output
12.If the 22.5 MHz signal is not measuring the correct power level, do not
13.If the 22.5 MHz signal is within tolerance, carefully reconnect the W41
You should hear a distinct snap when reconnecting the W41 cable. If this cable is not installed
properly, intermittent signal fluctuations may occur on the analyzer display.
288
Use an appropriate cable to go from the SMA connector to the RF input of
a functioning spectrum analyzer to verify the 22.5 MHz I.F. and amplitude
is correct.
spectrum analyzer.
Figure 7-15.
assume the Analog IF is the most probable cause until the 3rd LO
frequency and power level have been verified below.
cable to A3J19.
Keysight N9010A EXA Service Guide