Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
FFT sweeps are never auto-selected when Screen Video, Log Video or Linear Video
are the selected Analog Output.
Value SCPI Notes
Auto AUTO = ON When in Auto, the selection of sweep type is governed by two different sets of rules,
depending on whether you want to optimize for dynamic range or for speed. See "Sweep Type
Rules" on page 493
FFT
FFT
Manually selects FFT analysis, so it cannot change automatically to Swept
Swept
SWEep
Manually selects swept analysis, so it cannot change automatically to FFT
Selected automatically if any of the CISPR detectors is specified for any active trace, in which
case the FFT Sweep Type selection is also grayed-out
Remote Command
[:SENSe]:SWEep:TYPE FFT | SWEep
[:SENSe]:SWEep:TYPE?
Example
:SWE:TYPE FFT
:SWE:TYPE?
Dependencies Grayed-out in Zero Span, but the setting can be changed remotely with no error indication
Does not appear in certain instruments without sweeping hardware, such as VXT
Grayed-out or not displayed in measurements that do not support swept mode
When Gate is ON, Gate Method selection affects Sweep Type availability:
–
When Gate Method is FFT, Swept grayed-out and rules choose FFT
–
When Gate Method is Video or LO, FFT grayed-out and rules choose Swept
Swept is grayed-out while in Gated FFT (meaning Gate is ON and Gate Method is FFT)
When a CISPR detector (Quasi Peak, EMI Average, RMS Average) is selected for any active trace, the
FFT selection is grayed-out
When the RF Preselector is on, the FFT selection is grayed-out
When Source Mode is set to Tracking, the FFT selection is grayed-out
When Signal ID is on, Manual FFT is grayed-out
While in Gated LO (meaning Gate is ON and Gate Method is LO), the FFT selection is grayed-out
While in Gated Video (meaning Gate is ON and Gate Method is Video), the FFT selection is grayed-out
Preset AUTO = ON
Annotation The indication of sweep time includes a #Swp to indicate manual selection, as:
Sweep (#Swp) 13.33 ms (1001 points)
The indication of sweep time includes parenthetical notes to indicate sweep type unless in Auto,
Swept, as:
Auto, Swept Sweep 13.33 ms (1001 points)
Manual, Swept Sweep (#Swp) 13.33 ms (1001 points)
Auto, FFT Sweep (FFT) ~13 ms (1001 points)
Manual, FFT Sweep (#FFT) ~13 ms (1001 points)
492 Spectrum Analyzer Mode User's &Programmer's Reference

Keysight x-series Specifications

General

Analysis Bandwidth	Up to 1 GHz (depending on model)
Real-Time Bandwidth	Up to 1 GHz (depending on model)
Form Factor	Benchtop
Connectivity	LAN, USB, GPIB
Resolution Bandwidth	1 Hz to 10 MHz (depending on model)