question about reading from external memory while providing clock signal

[Evan A Young]

I'm trying to figure a way to provide a clock signal (~200kHz) and synchronously read digital lines at the same rate. It will be used to read from a memory chip of a data logger. It seems that using software timing would be too slow.

I have to use the DAQCard-6533 because of hardware restrictions. I can slow the whole process down, but I must keep it within reason, as the acquisition time is limited as well.

[Spencer S.]

Evan,

I agree that using software timing is not appropriate for this application. You will want to perform a pattern input operation. I would suggest that you examine the LabVIEW examples Buffered Pattern Input.vi and Cont Pattern Input.vi. The first demonstrates the programming structure you will want to implement for a finite acquisition and the second for a continuous acquisition. If the clock source input is set to "internal", the appropriate REQ line will output the clock at the frequency specified by the clock frequency input. 

Good luck with your application.

Spencer S.