ao/StartTrigger signal - how to generate a trigger ? - PCI-6040E

[romainv28]

Hello.

I'm working on Labview 8.2.1 with a PCI-640E.

I'm generating a waveform on the analog output, and I would generate, in the same time, a trigger on an output of the card.

I tried it on a digital I/O but it was too long.

In te datasheet, I saw this PIN: "PFI6/WFTRIG".

Could I do what I want with this PIN ?

I read that I must turn on output driver to output signal, but how ?

Thank you !

[romainv28]

I used DAQmx Connect Terminals.vi between PFI6 and aoStartTrigger ( http://digital.ni.com/public.nsf/allkb/4D354E79A3D871ED862569DF007BE479 )

But still doesn't works.

I just have a peak of few nanoseconds, so not enougth for me!

Could you help me ?

Thanks!

[Guillaume_H]

Hi,

Thank you for posting on National Instruments’ forums.

I think that the easiest way to perform such a thing is to use the aoStartTrigger to trigger a pulse generation on one of the counters of your DAQ board.

To do this, you have to use the VI “export signal” in your Analog Output Task to route the aoStartTrigger on a PFI. Then, you can configure a counter task to generate a pulse when the startTrigger is received on the PFI line.

You can use the following example as a starting point. It illustrates how to realize these actions.

Best regards,