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Simultaneous Buffered and Looped Acquisition

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I'm a graduate student in Biomechanics at the University of
Washington. I'm running Labview 5.1 on a Windows NT box with a PCI-
6071E DAQ board. Using this board I will be taking in between 8 and 12
Analog signals.

I want to sample all the analog channels at around 40kHz using a
buffered acquisition, while simultaneously taking two of the signals
and computing the integral of one versus the other in real time using a
looped acquistion. I have been able to get each component working
independently, however, I haven't had any success running the buffered
acquisition and looped acquisition simultaneously. Can anyone help me
out with this dilemna?

Also, if I get these two operations running simultaneously I wo
uld like
to have them synchronized to start at the same time. If anyone can
offer some wisdom on that it would be greatly appreciated.

Cheers


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When you say "looped," I assume you mean a continuous acquisition (i.e.
an acquisition where you can sample AI signals forever, if so desired).

This example is probably a bit more than what you're looking for, but
you should find all the functionality that you need w/in the VI. It's an
example to do digital-triggered, continuous AI w/ 2 E-Series boards RTSIed
together -- you only have one E-Series board.

Visit NI's Knowledgebase site:
http://digital.ni.com/explprog.nsf/2222373937d4e9a38625666a00831a24/6697d7750be8eeea862566cd0073bfa1?OpenDocument

Regards,
Rich Yavorsky
NI

jdubcarter@my-deja.com wrote:

> I'm a graduate student in Biomechanics at the University of
> Washington. I'm running Labview 5.1 on a Windows NT box with a PCI-
> 6071E DAQ board. Using
this board I will be taking in between 8 and 12
> Analog signals.
>
> I want to sample all the analog channels at around 40kHz using a
> buffered acquisition, while simultaneously taking two of the signals
> and computing the integral of one versus the other in real time using a
> looped acquistion. I have been able to get each component working
> independently, however, I haven't had any success running the buffered
> acquisition and looped acquisition simultaneously. Can anyone help me
> out with this dilemna?
>
> Also, if I get these two operations running simultaneously I would like
> to have them synchronized to start at the same time. If anyone can
> offer some wisdom on that it would be greatly appreciated.
>
> Cheers
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
0 Kudos
Message 2 of 2
(1,695 Views)