I want to acheive digitally triggered data acquisition and using AIO lines for triggering connecting to PFI lines but no response.

[GNS]

How to acheive digital data acquisitions using AO signals as trigger signal.

[Spencer S.]

Greetings,

I am not sure that I have a clear understanding of your question. It appears that you want to perform a triggered acquisition. You mentioned both analog input (AI) and analog output (AO). Which type of operation are you performing? Are you using digital or analog triggering? Also, it would be helpful if you could mention what hardware and software you are using.

Spencer S.

[GNS]

In fact I m doing data acquisition using digital triggering. But if I want to turn on a 5V signal at a moment and use this as a triggering signal by reading this 5V on PFI0 line, is it possible that the acquisition will start ? (I m eading this signal on AI0 pin also.)

[GNS]

In fact I m doing data acquisition using digital triggering. But if I want to turn on a 5V signal at a moment and use this as a triggering signal by reading this 5V on PFI0 line, is it possible that the acquisition will start ? (I m reading this signal on AI0 pin also.)

[Spencer S.]

Yes, you can configure a digitally-triggered analog input operation with a trigger source of PFI0. Example programs are available for performing this operation:

LabVIEW
Acquire N Scans Digital Trig.vi

NI-DAQ Function Calls
DAQsingleBufExtTrig_Eseries.C

Good luck with your application.

Spencer S.