AO Start Trigger Signal

Use the AO Start Trigger signal to initiate a waveform generation. If you do not use triggers, you can begin a generation with a software command. If you are using an internal sample clock, you can specify a delay from the start trigger to the first sample. For more information, refer to the NI-DAQmx Help.

Using a Digital Source

To use AO Start Trigger, specify a source and a rising or falling edge. The source can be one of the following signals:

• A pulse initiated by host software
• Any PFI terminal
• AI Reference Trigger
• AI Start Trigger

The source also can be one of several internal signals on the CompactRIO controller. Refer to the "Device Routing in MAX" topic in the NI-DAQmx Help or the LabVIEW Help for more information.

You also can specify whether the waveform generation begins on the rising edge or falling edge of AO Start Trigger.

Routing AO Start Trigger Signal to an Output Terminal

You can route AO Start Trigger to any output PFI terminal. The output is an active high pulse.

Using a Time Source

To use the Start Trigger signal with a time source, configure a specific time in NI-DAQmx. Refer to the "Timestamps" and "Time Triggering" topics in the NI-DAQmx Help for more information on accessing time-based features in the NI-DAQmx API.