How to use digital trigger with analog I/O

[TLA]

How do I program analog input and/or analog output to start on a digital trigger (PFI pin) on PCI-4451/4551.

I have tried out various configuration and succeeded in starting analog input, simultanuous input and output triggered by the the anlaog input signal. I have also succeded i triggering 4551 from the dedicated EXTTRIG pin.

The problem is to trigger on a selectable PFI pin. I find the help for "AI Trigger Config" and "AO Trigger and Gat Config" misleading - some unsupported features seem to work while selecting PFI pin as source make the PC restart immediately.

I have not been able to find any LabVIEW example that shows how to use PFI pin as trigger input.

Using LabVIEW 7.1, NI-DAQ 7.3 on Windows 2000.

[mohadjer]

Hello

The PCI-4451 does not have any PFI lines. If you look at the user manual in the link beneath you will be able to confirm this by looking at the connector signal discriptions. The same is valid for the PCI-4451

http://digital.ni.com/manuals.nsf/websearch/6A32358C53BB15F086256660007392DC?OpenDocument&node=132090_US

The two ways of triggering that you have succeded are the analog triggering and digital triggering that you can peform with the PCI-4451.

Regards
Mohadjer