N9030B PXA Signal Analyzer Service Guide 245
Analog/Digital IF Troubleshooting
A3 Digital IF Troubleshooting
13.The analyzer marker should read 250 MHz at −30 dBm ± 4 dB as shown in
Figure 7-12.
Figure 7-10 250 MHz IF Input
14.If the 250 MHz signal is not measuring the correct power level, see “A15
Front End Control Assembly Troubleshooting” on page 204 in this service
guide.
15.If the 250 MHz signal is within tolerance, carefully reconnect the W26 or
W40 cable to A3J15.
You should hear a distinct snap when reconnecting the cable. If this cable
is not installed properly, intermittent signal fluctuations may occur on the
analyzer display.
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