Sample analog signal according to external trigger rate

[hlseck]

Hi
I have a PCI MIO 16E4 DAQ card. I wonder I can use it to sample an analog signal at a rate determine by an external trigger. In my case, the trigger acts like a clock but does not necessary has a constant period. Would it conflict with the hardware clock of the card?

[lhaoxian]

Hello,

Do you mean that everytime this external trigger comes in, the analog signal will be sampled in a finite acquisition fashion?

There is an example program here that demonstrates retriggerable finite acquisition which might be suitable for you. It uses the NI-DAQmx driver, so your PCI-MIO-16E-4 is supported by it. The trigger can be any TTL signal.

Best regards,

Victor

NI ASEAN