Sweep Acquisition - Agilent Technologies N9913A User Manual

 Then choose from the following:

Sweep Acquisition

Available only in non-zero span measurements, when Sweep Acquisition is set to
Auto, the fastest sweep rate is achieved while maintaining full amplitude
accuracy.
However, you can adjust this setting in order to increase the probability of
intercepting and viewing pulsed RF signals.
For example, with SwpAcquisition set to Auto a pulsed GSM signal is NOT
visible on the FieldFox screen, as shown in a blue trace in the following image.
While watching the trace, increase the SwpAcquisition value until the pulse
spectrum rises out of the noise and reaches its maximum level. Increasing the
SwpAcquisition value beyond this point only slows the update rate (increases the
actual Sweep time readout) but does not improve measurement quality.
How to set Sweep Acquisition
SwpAcquisition is NOT an absolute measure of time, but a relative number
between 1 (fastest) and 5000 (slowest) sweep time. The actual time that was
required to complete a sweep is annotated on the screen.
 Press Sweep 3.
 Then
 Then choose from the following:
98
No output from the IF Out connector.
OFF
o
Narrow The IF output signal has approximately 5 MHz bandwidth.
o
The IF output signal has approximately 25 MHz bandwidth.
Wide
o
A GSM signal in a framed data format; timeslot zero ON; all others OFF;
PRF = 218Hz, Duty Cycle = 12.5%. The pulsed signal becomes visible on every sweep
SwpAcquisition Auto
update with SwpAcquisition = 50.
Man.
FieldFox User's Guide