8- 24 Keysight N9912-90001 User’s Guide
SA (Spectrum Analyzer) Mode
SA Mode Settings
8-
Figure 8-5 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 SweepTime
.
— Enter a value using the numeric keypad.
— Then select a multiplier key. Learn more in “Multiplier Abbreviations” on
page 2-14.
When the sweep time is longer than can be acquired with the current available
memory, Meas UNCAL is displayed on the screen. Learn more on page 8-23.
Four times the amount of memory is available with the FieldFox A.04.00
release, allowing longer sweep times in Zero Span.
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