Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.3 Channel Power Measurement
Auto Function
Remote
Command
[:SENSe]:CHPower:BANDwidth:VIDeo:AUTO ON | OFF | 1 | 0
[:SENSe]:CHPower:BANDwidth:VIDeo:AUTO?
Example
:CHP:BAND:VID:AUTO OFF
:CHP:BAND:VID:AUTO?
Preset
ON
VBW Presets
Unless noted in the table below, the Preset value of VBW is Auto.
Mode Preset Value
WCDMA 2.40 MHz
RBW Filter Type
Selects the type for the resolution bandwidth filters. Historically, the Res BW filters
in HP/Agilent/Keysight spectrum instruments 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]:CHPower:BANDwidth:SHAPe GAUSsian | FLATtop
[:SENSe]:CHPower:BANDwidth:SHAPe?
Example
:CHP:BAND:SHAP GAUS
:CHP:BAND:SHAP?
Notes GAUSsian= Gaussian
FLATtop = Flattop
We use SHAPe instead of TYPE (even though the control name uses Type) because TYPE is used for
backwards compatibility
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. The following examples illustrate this:
612 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)