OBW Summary Table (Markers)

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 function provides an OBW Summary table which contains results are derived from the OBW marker on the corresponding trace. There is an OBW Summary table available for each OBW Marker.  

The OBW Summary table will only contain data when the OBW marker is enabled for the corresponding trace and that trace contains spectrum data.

To show the OBW Summary Table

To show the OBW Summary table, select the OBW Summary table that corresponds to a trace with the OBW marker enabled. For example, if the OBW marker of interest was shown in Trace D, activate any of the other trace windows and click Trace > Data > Marker > Trace D > OBW Summary.

To learn how to use the OBW Marker, see Making an OBW Measurement.

Averaging

The OBW Summary table always shows OBW results calculated from the data shown in the spectrum trace containing the OBW marker.

Averaged OBW results can be obtained by enabling averaging and placing the OBW marker on an averaged Spectrum trace. When this is done, the OBW Summary table will show values calculated from the averaged trace.

Data Results

The OBW Summary table provides these data results (to learn about how these data results are computed, see the Measurement Method section of the About OBW Markers help):

Querying summary table data results programmatically

To programmatically query the Trace Summary Table data results using the Summary() and SummaryUnit() methods in the MeasurementData object.

See the How To Query Summary Table Data Results topic for more information.

See Also

Making an OBW Measurement (Markers)

OBW Markers Properties (Markers)

About OBW Markers (Markers)