I have a DAQ USB 6341 with a detector (photon counter) connected to PFI3 and a trigger connected to PFI9. The system is controlled through Matlab. The trigger is a delay stage. When the delay stage starts moving, it emits a pulse that is a trigger signal that should begin data acquisition on the detector; when it stops moving, it emits a pulse that acts as a trigger signal that should stop data acquisition. This works for analog detectors. In this case, the detector is a photon counter that is technically continuously taking data. I use a Counter Input Channel that counts edge counts. I only need to collect the data that is received when the delay stage is moving, hence the need for a trigger.
However, counter input channels do not seem to support trigger signals. Why is this? Is there another way I can trigger just the data collection of the Counter during the periods I want to collect?