X-Series Signal Analyzers Getting Started and Troubleshooting Guide 85
Troubleshooting
Check the Basics
http://www.keysight.com/find/cxab_manuals
— If the analyzer is not communicating via the LAN connection, check for the
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.
— To meet specifications, the analyzer must be aligned. Either the Auto Align
(On) feature must be selected (press System, Alignments, Auto Align, and
select Normal), or the analyzer must be manually aligned.
— Perform an Alignment. Press System, Alignments, Align Now, Align All
Now.
— If the previously performed alignments did not resolve the problem, press
System, Alignments, Restore Align Defaults. Then press System,
Alignments, Align Now, Align Now All.
— If the analyzer exhibits large amplitude errors (> 10 dB) especially at
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, Advanced, 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.
— Is the analyzer displaying an error message? If so, refer to the Instrument
Messages Guide.
— Check if the external frequency reference is selected but not available.
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.
— If you are using a Windows program other than the instrument application,
you may notice it running slow. Place the instrument application in single
sweep/measurement.
TIP You can get automatic electronic notification of new instrument software
releases and other product updates/information by subscribing to the
Keysight Technologies Test & Measurement E-Mail Notification Service for
your signal analyzer at http://keysight.com/find/MyKeysight
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