NI-DAQmx .NET Framework 4.0 API Reference

Table of Contents

StartTrigger Properties

  • Updated2023-02-21
  • 4 minute(s) read
StartTrigger Properties

The StartTrigger type exposes the following members.

Properties

  NameDescription
Public propertyAnalogEdge
Public propertyAnalogMultiEdge
Public propertyAnalogWindow
Public propertyDelay
Specifies an amount of time to wait after the Start Trigger is received before acquiring or generating the first sample. This value is in the units you specify with DelayUnits.
Public propertyDelayUnits
Specifies the units of Delay.
Public propertyDigitalEdge
Public propertyDigitalPattern
Public propertyMaximumNumberOfTriggersToDetect
Specifies the maximum number of times the task will detect a start trigger during the task. The number of times a trigger is detected and acted upon by the module may be less than the specified amount if the task stops early because of trigger/retrigger window expiration. Specifying the Maximum Number of Triggers to Detect to be 0 causes the driver to automatically set this value to the maximum possible number of triggers detectable by the device and configuration combination. Note: The number of detected triggers may be less than number of trigger events occurring, because the devices were unable to respond to the trigger.
Public propertyRetriggerable
Specifies whether a finite task resets and waits for another Start Trigger after the task completes. When you set this property to , the device performs a finite acquisition or generation each time the Start Trigger occurs until the task stops. The device ignores a trigger if it is in the process of acquiring or generating signals.
Public propertyRetriggerWindow
Specifies the period of time in seconds after each trigger during which the device may trigger. Once the window has expired, the device stops detecting triggers, and the task will finish after the device finishes acquiring post-trigger samples that it already started. Ensure the period of time specified covers the entire time span desired for retrigger detection to avoid missed triggers. Specifying a Retrigger Window of -1 causes the window to be infinite.
Public propertyTerminal
Indicates the name of the internal Start Trigger terminal for the task. This property does not return the name of the trigger source terminal.
Public propertyTime
Public propertyTimestamp
Gets the start trigger timestamp.
Public propertyTimestampEnable
Specifies whether the start trigger timestamp is enabled. If the timestamp is enabled but no resources are available, an error will be returned at run time.
Public propertyTimestampTimescale
Specifies the start trigger timestamp timescale.
Public propertyTriggerWindow
Specifies the period of time in seconds after the task starts during which the device may trigger. Once the window has expired, the device stops detecting triggers, and the task will finish after the device finishes acquiring post-trigger samples for any triggers detected. If no triggers are detected during the entire period, then no data will be returned. Ensure the period of time specified covers the entire time span desired for trigger detection to avoid missed triggers. Specifying a Trigger Window of -1 causes the window to be infinite.
Public propertyType
Specifies the type of trigger to use to start a task.
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