You can use time as a trigger for sync pulses on the FieldDAQ device. To use a sync pulse with a time source, specify a specific time in NI-DAQmx. Refer to the Time Triggering topic in the NI-DAQmx Help for more information on accessing time-based features in the NI-DAQmx API.
To accurately synchronize Delta-Sigma devices in two or more separate tasks, you must specify the same sync pulse. Otherwise, a sync pulse is initiated by software implicitly, even if time start triggers are specified for the tasks. However, for multidevice tasks, the sync pulses and start triggers are automatically synchronized.