3 VMA Mode
3.5 Channel Power Measurement
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 –3dB bandwidth of the filter. That is, a 10MHz Res BW filter was a Gaussian
shape with its –3 dB points 10MHz 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 1825 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:
–3 dB (Normal) filter BW Res BW 300 Hz
–6 dB filter BW Res BW (–6 dB) 422 Hz
Noise filter BW Res BW (Noise) 317 Hz
Impulse filter BW Res BW (Impulse) 444 Hz
CISPR filter BW Res BW (CISPR) 200 Hz
MIL filter BW Res BW (MIL) 1 kHz
Flattop filter type Res BW (Flattop) 300 Hz
Backwards
Compatibility
SCPI
[:SENSe]:CHPower:BWIDth:SHAPe
851 Vector Modulation Analyzer Mode User's &Programmer's Reference
To Next Page
Loading...
