Instrument Control (GPIB, Serial, VISA, IVI)

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GPIB...Computer Freezes

I have an AT-GPIB/TNT (PnP) card in PC and connected to an Agilent 34970A
test instrument. I first built a simple application in VB6 that used NI-Visa
with the 34970a PnP driver. As soon as I tried to open communication, the PC
would freeze and only thing I could do would be a hard reset. Then I tried
to use just Visa commands and was able to open a GPIB and instrument session
and was able to set an attribute without a problem.. As soon as I tried to
use viWrite, PC froze again. Then I used MAX and as soon as I scanned for
instruments, PC freezes.
What is going on. I have visa 2.6.07.
Gary
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I went through several steps to find out what was wrong. Going through
"troubleshooting tool" showed that there was a DMA conflict. But going
through the System check showed no conflict. I uninstalled the card and then
moved it one slot. Rebooted and all is OK. At least the PC does not freeze.
Thank you,
Gary






"Gary Lindgren" wrote in message
news:3defc9a2@newsgroups....
> I have an AT-GPIB/TNT (PnP) card in PC and connected to an Agilent 34970A
> test instrument. I first built a simple application in VB6 that used
NI-Visa
> with the 34970a PnP driver. As soon as I tried to open communication, the
PC
> would freeze and only thing I could do would be a hard reset. Then I tried
> to use just Visa commands and was able to open a GP
IB and instrument
session
> and was able to set an attribute without a problem.. As soon as I tried to
> use viWrite, PC froze again. Then I used MAX and as soon as I scanned for
> instruments, PC freezes.
> What is going on. I have visa 2.6.07.
> Gary
>
>
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