Keysight N9010B EXA Signal Analyzer Service Guide 253
Front End Control Troubleshooting
A15 Front End Control Assembly Troubleshooting
Figure 6-9 Connector Detail
The voltage should be ~21.5 VDC steady state at this point. When you switch
from Standard Path to uW Presel Bypass, you should see a negative going
pulse to 0 VDC on the oscilloscope for ~15 mS before the voltage returns to
~21.5 VDC steady state. The oscilloscope triggering may need to be adjusted
to see the negative going pulse. This can be tested on both connectors that
contain the green wire.
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