Keysight N9927-90001 User’s Guide 171
SA (Spectrum Analyzer) Mode
SA Mode Settings
Figure 9-6 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 N991xA/2xA/3xA models and 6000 seconds for N995xA &
N996xA models.
— Then select a multiplier key. Learn more in “Multiplier Abbreviations” on
page 43.
For non-zero span measurements, refer to “Sweep Acquisition” on
page 169.
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