Keysight x-series - SW Preselection BW; High Freq Prefilter

3 Spectrum Analyzer Mode
3.13 Phase and Amplitude vs Time Measurement
Grayed-out when "Software Preselection" on page 1992 is OFF. The grayout message is “Unavailable
unless SW Presel enabled”
Preset
N9041B
ADVanced
N9042B+V3050A
NORMal
State Saved Saved in instrument state
SW Preselection BW
Specifies the effective bandwidth to be used for Software Preselection.
The options are:
–
NORMal – when making Swept measurements, a software preselection algorithm
is used which takes up to 4 background acquisitions, then post-processes the
result. This algorithm can remove images from signals with an occupied
bandwidth up to around 3GHz. (Default/Preset setting). When making FFT
measurements, this algorithm is not used, instead the same algorithm is used as
for NARRow (below)
–
NARRow– a software preselection algorithm is used which takes two background
acquisitions, then post-processes the result to detect and remove images from
wideband signals with occupied bandwidths up to 2GHz. This increases the risk
of images failing to be rejected, but improves the measurement speed
Remote Command
[:SENSe]:POWer[:RF]:SWPResel:BW NORMal | NARRow
[:SENSe]:POWer[:RF]:SWPResel:BW?
Example
:POW:SWPR:BW NARR
Dependencies Only appears in N9041B and N9042B+V3050A. Only appears in measurements that use the Swept
method
Grayed-out when "Software Preselection" on page 1992 is OFF. The grayout message is “Unavailable
unless SW Presel enabled”
For N9042B+V3050A, the parameter is SCPI-only, and always set to NARRow when Software
Preselection is enabled
Preset
N9041B
NORMal
N9042B+V3050A
NARRow
State Saved Saved in instrument state
High Freq Prefilter
Lets you set the state of Prefilter for center frequencies above 1310MHz.
Spectrum Analyzer Mode User's &Programmer's Reference 1995