Troubleshooting guide

103
Troubleshooting
Check the Basics
o If the previously performed alignments did not resolve the problem, press
System, Alignments, Restore Align Defaults. Then press System, Alignments,
Align Now, All.
o If the instrument exhibits large amplitude errors (> 10 dB) especially at
frequencies above 10 GHz, the microwave preselector might not be properly
centered. Press Peak Search, AMPTD Y-Scale, Presel Center. If the signal
amplitude error is corrected, the preselector characterization should be
performed. Press System, Alignments, More 1 of 2, Advanced, Characterize
Preselector. The characterization will take several minutes and the instrument
must not be interrupted during this time. If the instrument is interrupted during
the characterization process, the characterization data will be destroyed and it
will be necessary to perform the entire process again.
o Is the instrument displaying an error message? If so, refer to the Instrument
Messages Guide.
o Check if the external frequency reference is selected but not available. Verify that
it is selected by pressing Input/Output, Freq Ref In. If External is selected,
changing the setting to Sense allows the instrument 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.
o 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 firmware releases and other
product updates/information by subscribing to the Agilent Technologies Test &
Measurement E-Mail Notification Service for your EMI Receiver at
http://agilent.com/find/notifyme