DAQ question

[Frank Lane]

Hi NG,

I was hoping that some kind soul would grace me with some in-
struction or some pointers to links or something.

Problem: I'm running an SCXI chassis with multiple(5) cards in
it. Two of the cards are 1120's. One of 1120 modules is in slot one
and the other is in slot five. I need to be able to read the voltages
from these analog cards simultaneously.

Currently I have a VI with two parallel loops each doing a read
on one of the cards. Leading into each loop I have a AI config function
and an AI start function. It doesn't work something about resource in
use is the problem. What I think the problem is is that there should be
a group(which I hope someone will explain what this is) that both AI
modules are in and then treat the
m as one "meta-module"?

Am I totally off base?

Any help or suggestions will be greatly appreciated!
--

Frank Lane
(256)961-4677
lanef@boris.msfc.nasa.gov

[Harry King]

In article <39004FFB.237C@boris.msfc.nasa.gov>,
Frank Lane wrote:
>Hi NG,
>
> I was hoping that some kind soul would grace me with some in-
>struction or some pointers to links or something.
>
> Problem: I'm running an SCXI chassis with multiple(5) cards in
>it. Two of the cards are 1120's. One of 1120 modules is in slot one
>and the other is in slot five. I need to be able to read the voltages
>from these analog cards simultaneously.

Check your SCXI chassis' user manual. I believe that there is a heirarchy
of those cards, and that the 1120 is near the bottom. This means that it
can't be in clot one, one of the others must be ahead of it. I honestly
don't recall the details, but I'm pretty certain that you can't plug the
cable into th
e back of it - it must go into the back of one of your other
3 cards.

Harry

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