VBW

Menu Path: MeasSetup > ResBW

VBW lets you change the analyzer post-detection filter (VBW or “video bandwidth”).

Auto - When checked (default setting), selects automatic coupling of VBW to RBW using the ratio set by VBW to ResBW Ratio. To decouple VBW from RBW, uncheck this checkbox.

This parameter is only available with Power Spectrum, Adjacent Channel Power and Spectral Emissions Mask measurements.

For Time Input Domain measurements, the VBW value is a desired value that may coerced to an Actual VBW value. The VBW value shown at the bottom of some traces (e.g., Spectrum) is the Actual VBW value (not the desired VBW value).

See Also

Resolution and Video Bandwidth (Power Spectrum)

VBW and VBW Averaging (Power Spectrum)