IviSpecAn Make Marker Delta [DMK]

IviSpecAnDeltaMarker Capability Group

This VI specifies whether the active marker is a delta marker.

When this VI is called with DeltaMarker true, the current active marker is changed to a delta marker and the associated reference marker is moved to the current position of the active marker. The current position becomes the reference point for marker values. The marker readout indicates the relative frequency (or time) separation and amplitude difference between the reference and active marker.

When this Delta Marker is set to false, the current marker is changed to a normal marker. The reference marker is determined by calling the IviSpecAn Query Reference Marker [DMK].vi.

Notes

(1) If the current active marker is not enabled then this VI enables the active marker.

	instrument handle The instrument handle that you obtain from the IviSpecAn Initialize or IviSpecAn Initialize With Options VIs.
	delta marker Specifies whether marker Delta is True or False. Depending on this value, the driver will set the marker to IVISPECAN_VAL_MARKER_TYPE_NORMAL or IVISPECAN_VAL_MARKER_TYPE_DELTA (see the VI help for more details). Valid Values: TRUE; FALSE Default Value: FALSE
	error in (no error) The error in cluster can accept error information wired from VIs previously called. Use this information to decide if any functionality should be bypassed in the event of errors from other VIs. The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.
	instrument handle out The instrument handle that you obtain from the IviSpecAn Initialize or IviSpecAn Initialize With Options VIs.
	error out The error out cluster passes error or warning information out of a VI to be used by other VIs. The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.