There are two methods of calculating the average frequency:
Users can use timing cursors which help measure the distance between events, and navigate through waveforms in the Accelerated Waveform Viewer window.
NOTE: For additional information on timing cursors, refer to the Active-HDL User Guide under: Tools | Waveform Viewer |Accelerated Waveform Viewer Window | Timing Cursors
Users can insert measurements into the Waveform View pane. To insert a measurement, select the Measurement Mode option, and drag the mouse cursor between two events.
NOTE: For additional information on measurements, refer to the Active-HDL User Guide under: Tools | Waveform Viewer | Accelerated Waveform Viewer Window | Measurements.
For printing, inserting, or removing measurements in the active Accelerated Waveform Viewer window, users can also use the measurement command.
NOTE: For additional information on the measurement command, refer to the Active-HDL User Guide under: Active-HDL Macro Language | Macro Command Reference | measurement command.