3 Spectrum Analyzer Mode
3.5 ACP Measurement
Command
[:SENSe]:ACPower:BANDwidth:VIDeo:AUTO?
Example
:ACP:BAND:VID:AUTO ON
VBW Presets
Unless noted in the table below, the Preset value of Video BW is Auto.
Mode Preset Value
WCDMA 1 MHz
RBW Filter Type
Selects the type for the resolution bandwidth filters. Historically, the Res BW filters
in HP/Agilent/Keysight spectrum analyzers were Gaussian filters, specified using the
–3 dB bandwidth of the filter. That is, a 10 MHz Res BW filter was a Gaussian shape
with its –3 dB points 10 MHz apart. In X-Series, the RBW Filter BW menu lets you
choose between a Gaussian and Flat Top filter shape, for varying measurement
conditions.
Filter Type SCPI Example
Gaussian :BAND:SHAP GAUS
Flattop :BAND:SHAP FLAT
Remote Command
[:SENSe]:ACPower:BANDwidth:SHAPe GAUSsian | FLATtop
[:SENSe]:ACPower:BANDwidth:SHAPe?
Example
:ACP:BAND:SHAP GAUS
:ACP:BAND:SHAP?
Notes GAUSsian= Gaussian
FLATtop = Flattop
Dependencies Disabled when "Meas Method" on page 970 is FAST or FPOWer
If pressed, an advisory message is generated. If the equivalent command is sent, a "Setting conflict"
warning is generated
Preset "Auto Couple" on page 2017 selects the preset value
State Saved Saved in instrument state
Annotation The annotation under RBW in the bottom left of the screen shows the type of filter or bandwidth that is
being used
Backwards
Compatibility SCPI
[:SENSe]:ACPower:BWIDth:SHAPe
940 Spectrum Analyzer Mode User's &Programmer's Reference
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