Keysight Technologies UXA N9040B Getting Started And Troubleshooting Manual page 83

Troubleshooting
Check the Basics
— If the analyzer is not communicating via the LAN connection, check for the
— To meet specifications, the analyzer must be aligned. Either the Auto Align
— Perform an Alignment. Press System, Alignments, Align Now, Align All
— If the previously performed alignments did not resolve the problem, press
— If the analyzer exhibits large amplitude errors (> 10 dB) especially at
— Is the analyzer displaying an error message? If so, refer to the Instrument
— Check if the external frequency reference is selected but not available.
— If you are using a Windows program other than the instrument application,
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presence of blinking yellow LEDs on the rear panel LAN connector. If the
ACT LED is not blinking, check the LAN cable and LAN integrity.
(On) feature must be selected (press System, Alignments, Auto Align, and
select Normal), or the analyzer must be manually aligned.
Now.
System, Alignments, Restore Align Defaults. Then press System,
Alignments, Align Now, Align Now All.
frequencies above 10 GHz, the RF preselector might not be properly
centered. Press AMPTD, Signal Path, Presel Center. If the signal amplitude
error is corrected, the preselector characterization should be performed.
Press System, Alignments, Ad vanced, Characterize Preselector. The
characterization will take several minutes and the analyzer must not be
interrupted during this time. If the analyzer is interrupted during the
characterization process, the characterization data will be destroyed and it
will be necessary to perform the entire process again.
Messages Guide.
Verify that it is selected by pressing Input/Output, Freq Ref Input. If
External is selected, changing the setting to Sense allows the analyzer to
sense the presence of an external reference and use it only if it is available.
The frequency of the reference should be set correctly.
you may notice it running slow. Place the instrument application in single
sweep/measurement.
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