OBW Tab (Markers)

The OBW tab of the Markers dialog box provides the OBW Occupied bandwidth is closely related to channel power. It indicates how much frequency spectrum is covered by some given percentage (often 99%) of the total power of the modulated signal. marker control and configuration properties. This tab contains the parameters to setup and perform an occupied bandwidth measurement. The OBW tab also provides the Centroid - > Center Frequency function.

The OBW marker only applies to spectrum traces.

The OBW tab includes these properties and functions:

Trace selection dropdown box: at the top of the OBW tab is a dropdown box for selecting the trace on which to enable the OBW marker.
OBW check box: Controls the occupied bandwidth marker function.
- Selected: Enables the OBW marker function and performs an OBW measurement for the active trace (spectrum data only).
- Cleared: Disables the OBW marker function for the active trace.
% Power: (default: 99%) Specifies the percentage of total power in the measurement span to capture with the OBW marker.
Centroid -> Center Frequency: This function automatically sets the VSA center frequency to the centroid frequency.