Acquire single analog point on each pulse

Hi,
I have a query on what i hope is a simple application. Im using a PCI-6220 card and what I would like to do is aquire a single data point which is to be triggered by a digital pulse. The pulse will come from an encoder, and what I would like to do is aquire a single analog data point each time the encoder channel pulse goes high (retriggerable daq?)
Which would be the best way to approach this?
Thanks,
David

David,
this is easily done by importing your encoder-signal as external clock for your AI (which is either finite or continuous then!)
hope this helps,
Norbert
[EDIT]: This will work out directly if the encoder creates CMOS/TTL pulses. If it doesn't, you should consider some kind of signalconditioning for your encodersignal
Message Edited by Norbert B on 11-19-2007 03:41 AM
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How to take a single data point for each trigger pulse ( synchronous acquisition).

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so this is the data acquired -0.900879,-0.900879,-0.900879,-0.900879,-0.900879,-0.900879,-0.900879,-0.900879 and i think that is a noise because all time i get this data.
tank you very mutch fo your help

Hello,
Please see the responses to this thread at the following post.
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How to acquire 1 data point per trigger ?

Dear all, anyone can help me in acquiring 1 data point per trigger? just as a Sample/hold circuit?
I changed the example from Labview "Acquire 1 point digital trig", however, it doesn't work, it says data acquiring is inconsistent with buffer. The program is attached.
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Attachments:
Acquire1PointTrig.vi ‏81 KB

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Message Edited by Brian C on 03-28-2007 01:48 PM
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