100
FieldFox User’s Guide
GSM signal, framed data format, 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
o
then set
Span
to 0 Hz
o
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. Sweep time is limited to 1000
seconds.
Then select a multiplier key. Learn about multiplier abbreviations on page 19.
Previous FieldFox versions limited the sweep time / ResBW settings. This
restriction is no longer necessary with release A.06.25.
Learn more about SA mode Sweep Time in the
Supplemental Online Help:
http://na.tm.agilent.com/fieldfox/help/FieldFox.htm
Triggering
External, Video, and RF Burst triggering allows you to initiate an SA mode sweep
using an external event such as a signal burst.