NiDAQmx and 6220 board - Retriggering to start sampling analogue signals

[sch]

I have a M series 6220 board with labview 7.

I want to measure analogue signals using a digital trigger - much like the examples given in the library shipped with ver.7. However I want to "retrigger" periodically so that I can sample the my analogue signal each time my external circuit sends a trigger pulse out. This retriggering facility continuing until I press a stop button.

At the moment all I can do is get one triggered set of samples and then the VI stops.

Any code advice or examples would be appreciated.

rgds

Charles (labview beginner)

[gus]

There is an example that ships with NI-DAQ that will do this for you. It is called "Multi-Function-Ctr Retrigg Pulse Train Generation for AI Sample Clock.vi".

I hope this helps!
gus....