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ai 16xe external sampling "switch" alternatives

I would appreciate suggestions on any method to use an external "on/off" switch to control the AI samples collected using a DAQCard AI-16XE-50 and labview 6.1  The sample rate varies at a very low  rate (approx. 2 or 3 samples per second max.).  I have a "debouncing" Maxim 6816 IC in an analog switch circuit that outputs a TTL level digital output. How could it be used to control the sampling rate in a vi such as  Cont Acq&Graph (buffered) D Trig.vi.   It need to repeated start and stop the  sampling and graphing within the routine. Thanks
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I was just wondering if opening another AI channel to monitor the voltage change on a normally open single pole single throw external switch would be a poosible solution.  The problem is that the DaqCard AI-16XE-50 doesn't have any analog triggering modes.
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Hi checking,

 

Opening another AI channel to monitor the voltage change on a normally open single pole single throw external switch is a possible solution.  You could then create a software trigger based on the change.

 

Regards,

David

Applications Engineer

National Instruments

David
Applications Engineer
National Instruments


Digital Multimeters
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