Simple data acquisition with labview

Thanks for all the help, I got the VI package for LabView. However, I'm 
trying to build a simple VI that will graph voltage when I bridge one of the 
channels with a battery. It doesn't work; I'm using the AI Sample 
Channel.vi, but the only thing I get is a random (varying) source, exept 
when grounded, where it stabilizes at 0.230, and when bridging an AA 
battery, where it seems to go to 1.7**. When I try to run something with the 
output, I get (at the console) the following:

lowinp.c called with null ComediDeviceRefnum
ComediClose.c: invalid Device! device is 0!
do_cmd error ret=-1

And I do have the comedi device specified as /dev/comedi0

Can someone help? If anyone has a simple VI which just shows the voltage 
across the channels, I'd be very happy if I could have a copy of it to see 
how to make it work.

Alex

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Received on 2003-08-07Z19:33:44