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Using the 10 MHz reference clock as a timing source for a timed loop

Hi,

 

I'm having trouble getting to grips with a PCIe-6251 card. I know that the card has a built-in 10MHz reference clock (which uses an 80MHz timebase), which can be used to time analogue output signals, but according to the instruction manual should also be used to time digital output signals.

 

Is it possible to use the 10MHz reference clock, or any other timing source on the PCIe-6251 to control a timed loop? As far as I realize, you're meant to use the "DAQmx create timing source" VI, and connect that to the timing source input terminal of the timed loop, but which mode of the "DAQmx create timing source" VI should I use, to get it to work? I have tried using the NI Example finder, but none of the codes I've found seem to fulfil this specific task...

 

Just to clarify, my aim is to use the PCIe-6251 to time the timed loop, with a tick rate of 1MHz or more... so if there is an easier way to do that than using the 10MHz timebase, that would be even better. The version of Labview I use is Labview 2009

 

Sorry for posting a similar question twice, I'm just not sure which is the correct discussion board for it. Thank you for any help provided.

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This post is also on the LabVIEW board here - http://forums.ni.com/t5/LabVIEW/Using-the-10-MHz-reference-clock-as-a-timing-source-for-a-timed/m-p/...

 

Dominic Walker
Cardiff University
Electrical and Electronic Engineering Student
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