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GPTR doesn't output pulses

I'm controlling GPCTR0 on a PCI-6035E card with software (Labwindows) that has it send out a single logic pulse. In the past month, the counter has gone from working fine, to outputting pulses of about .1V, to not pulsing at all. I've tried switching to counter 1, to no avail. I've also run the online diagnostic on the PCI card, and it passes alll of the tests. What's going on?
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perhaps your VI may be corrupt. If it passes all the diagnostics and the other counter does the same, it is most likely a software problem. Perhaps your VI may be corrupted or something in the code is wrong. I think it would be helpful to see the code you are using to generate this pulse.

Derek

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Actually, it turns out that moving the PCI card to a different slot fixed the problem.
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