Keysight N9938-90003 User’s Guide 135
SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings
Figure 7-8 GSM Signal, Framed Data Format
The graphic above shows a GSM signal, framed data format, with timeslot 0
and 3 “on”. Sweep Time is set to approximately the frame interval. Press Single
several times until the waveform section of interest is viewable and stable.
Then markers can be used to measure the timeslot width and interval as
shown.
How to set Zero Span
—Set Center to the frequency of interest
— then set Span
to 0 Hz
—or select Zero/Last Span
. Each key press toggles the frequency span
between 0 Hz and the last specified frequency span.
How to change Sweep Time in Zero Span
—Press Sweep 3
—Then Sweep Time
— Enter a value using the numeric keypad. Sweep time is limited to 1000
seconds for N991xB/2xB/3xB models.
— Then select a multiplier key. Learn more in “Multiplier Abbreviations” on
page 35.
Learn more about SA mode Sweep Time in the Supplemental Online Help:
http://na.support.keysight.com/fieldfox/help/SupHelp/FieldFox.htm
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