192 Keysight N9010A EXA Service Guide
RF Section Troubleshooting (RF/Microwave Analyzers)
Troubleshooting
If any of the voltages measured do not match the levels in Table 4-17, the most
probable cause is the A15 Front End Control Assembly. Once the switch control
logic has been verified, turn off the instrument. Disconnect the RF Front End
Troubleshooting board cables, and reconnect the analyzer cables to the A15
Front End Control Assembly. Turn the instrument on and allow it to complete
its full boot up process to Spectrum Analyzer mode.
Input Attenuator A Power Level Verification
(Option FSA only)
Press Mode Preset, Input/Output, RF Calibrator, 4.8 GHz, AMPTD,
Attenuation, 0 dB on the analyzer. Refer to Figure 4-30, remove cable W11
from A9 (1) Output. Measure the 4.8 GHz calibrator signal on the output of the
attenuator using the proper high frequency cables and connect to the
functioning Spectrum Analyzer.
Figure 4-30 W9 and W11 Location
Tolerances should be used as a guideline.
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