Very Long Sweep Times; Zero Span Measurements - Keysight FieldFox B Series User Manual

SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings
Some Detector and Video Bandwidth settings will raise the Auto Sweep
Acquisition value greater than 1. In these cases, manually setting Sweep
Acquisition lower than the Auto value may have NO effect.
Measurement speed specifications do NOT apply in Temperature Control
Mode. Learn more in
Learn more about SA mode SwpAcquisition time in the Supplemental Online
Help:
https://edadocs.software.keysight.com/kkbopen/fieldfox-manuals-firmware
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Firmware, Software and Product Support).

Very Long Sweep Times

Two primary settings are responsible for the sweep time: Res BW and
SwAcquisition.
— When the sweep time exceeds 1200 seconds (20 minutes), an informational
— When the sweep time exceeds 4000 seconds (about 1 hour),
— InstAlign is always performed only at the beginning of the sweep regardless

Zero Span Measurements

When setting the frequency span to Zero, there is NO spectrum of frequencies
to display, so the X-axis units becomes Time. The SA becomes like a tunable
oscilloscope, with the center frequency being the frequency of interest. This
capability is useful for analyzing modulation characteristics, such as pulsed
measurements.
For non-zero span measurements, refer to
page
Keysight N9938-90006 User's Guide
"Temperature Control Mode" on page
message: Alert: Very long sweep in progress...
for the duration of the sweep.
is annotated on the screen. Accuracy cannot be guaranteed.
of the sweep time. Learn more in
on page 208.
191.
is annotated on the screen
"How to Access Individual Alignments"
"Sweep Acquisition" on
33.
Meas UNCAL
193