Triggering a task using PFI on a PCI-6221 (37-pin) board

[Jiri_2]

Hello everybody,

I need hardware triggered acquisition using the PCI-6221 (37-pin) board. In LabView, I used simple program (see attachement): in a DAQ assistent, the task triggering is set to PFI 7. However, bringing a pulse to PFI7 does not trig the acquisition and I get time-out error.

When I test the same, but using the standard PCI-6221 board (i.e. 68-pin), everything works fine.

Do I need to do some extra configuration for PFI when I am using the 37-pin board? (Note: the same pin is assigned to PFI7 and digital line P1.7).

Thank you.

Jiri

P.S.:  I am using LabView 8.0, NI-DAQmx 8.7.1 and Windows XP Proffesional.

[Jiri_2 · Accepted solution]

Problem was curious but it is solved now:

 - NI-DAQmx actually was not 8.7.1, but 8.0.0; I updated it (but it was still not working)

 - I replaced virtual channels by corresponding physical channels; it started to work

 - I replaced back the physical channels by virtual one, and it is still working 🙂

It seems there is some bug somewhere in NI-DAQ.

Jiri