Keysight N9010A EXA Service Guide 311
L.O. Synthesizer/Reference Troubleshooting
A14 L.O. Synthesizer Troubleshooting
Figure 8-5 4.5225 GHz 1st L.O. Measurement
Continue changing the center frequency of the analyzer as per Table 8-1 and
measure the LO output expected frequency and power using the functioning
spectrum analyzer.
If the 4.5225 GHz or 5.7225 GHz signal is not measuring the correct power
level, the LO Synthesizer assembly is the most probable cause.
Perform the preselector peak or preselector centering on the functioning
spectrum analyzer if any of the expected 1st L.O. power levels are not
within tolerance.
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