IviSpecAn Configure Signal Track Enabled [MKR]

IviSpecAnMarker Capability Group

This VI enables signal-tracking. When signal tracking is turned on, the spectrum analyzer centers the signal on which the active marker resides after each sweep. There are two prevalent methods of signal tracking in the industry.

1. A search for the largest signal on screen is made, and the spectrum analyzer center frequency is tuned to this signal.

2. The marker is placed on a signal (anywhere on screen) and when marker track is enabled, the frequency of the peak of the selected signal is used for tuning the spectrum analyzer. This does not need to be the largest signal on screen, and this method tracks the specified signal in the presence of a larger signal.

This VI implements the first method of signal tracking. This INVALIDATES the IviSpecAn>>Basic Operation>>Frequency Start and IviSpecAn>>Basic Operation>>Frequency Stop property values.

	instrument handle The instrument handle that you obtain from the IviSpecAn Initialize or IviSpecAn Initialize With Options VIs.
	signal track enabled Specifies whether signal tracking is enabled. The driver uses this value to set the IviSpecAn>>Markers>>Signal Track Enabled property. Note: Signal track can only be enabled on one marker at a time. The driver shall check all other markers to see if this VI is already enabled on any marker other than the active and turn this off on the other marker before enabling this on the active marker. 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.