Use the Start Trigger signal to begin a measurement acquisition. A measurement acquisition consists of one or more samples. If you do not use triggers, begin a measurement with a software command. Once the acquisition begins, configure the acquisition to stop in one of the following ways:

  • In finite mode, when a certain number of points has been sampled
  • In continuous mode, with a software command

You can specify a default delay from the Start Trigger to the first sample.

Use the Start Trigger signal with a time source, by specifying a specific time in NI-DAQmx. Refer to Time Triggering in the NI-DAQmx User Manual for more information on accessing time-based features in the NI-DAQmx API.