Trigger and Gate

Uses triggering to extract a segment out of a signal. The trigger conditions can be based on a start or stop trigger threshold or can be static. When a trigger condition is static, the trigger occurs immediately and this Express VI returns a predefined number of samples.


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Dialog Box Options

Inputs/Outputs

  • cerrcodeclst.png error in (no error) —

    Describes error conditions that occur before this node runs.

  • cexpdynwdt.png Signals —

    Contains the input signal or signals.

  • cbool.png Reset —

    Controls the initialization of the internal state of the VI. The default is FALSE.

  • ci16.png Data Index —

    Contains the index of the detected trigger. If this Express VI is in a loop, wire Data Index to the iteration terminal of the loop.

  • cbool.png Manual Trigger —

    Starts the trigger immediately and overrides the Start Trigger settings you configure. The default is FALSE.

  • ibool.png Data Available —

    Indicates if data is available that meets the requirements of the trigger.

  • ierrcodeclst.png error out —

    Contains error information. This output provides standard error out functionality.

  • iexpdynwdt.png Previous Signals —

    Contains the last triggered output data. If no data meets the requirements of the trigger, this output contains the most recent segment that meet the requirements of the trigger.

  • iexpdynwdt.png Triggered Signals —

    Returns the resulting segment between Start Trigger and Stop Trigger. If no data meets the requirements of the trigger, this output returns an empty signal.