Start a Task with a Specified Delay After a Trigger Using LabVIEW with DAQmx

[GarPar]

Overview
This VI demonstrates how to setup a task that will start a specified number of seconds after a trigger is received.

 
Description

In this VI, when a trigger is received, the task can start after a programmable delay. This VI can be changed to delay a specific number of ticks or sample clock periods.

Requirements

• LabVIEW 2012 (or compatible)

Steps to Implement or Execute Code

1. Wire your trigger/input output lines to your hardware and select the appropriate lines.
2. Specify the number of seconds/ticks/sample clock periods to delay the start of your acquisition.
3. Run the VI.

Additional Information or References
VI Snippet

**This document has been updated to meet the current required format for the NI Code Exchange.**

[tangmiao]

Can this set the delay time to about within 5µs, or does it depend on the DAQ deck, and if so, which one can realize this goal?

[Dr.Adrien]

Apparently this doesn't work with CO Pulse Freq. ( Specified property is not supported by the device or is not applicable to the task. Property: Start.Delay)

Then the initial start delay can be used, and may be made not only initial, but for each new serie of pulses : This property can be found under the DAQmx Channel » Counter Output » General Properties » More » Enable Initial Delay On Retrigger. (for models with the STC3 Timing Engine)