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counting ttl pulses

Hello,

I am new to Labview and am having a simple problem. I am trying to use the Meas Dig Periods-Buffered-Continuous-High Freq 2 Ctr.vi to count rising edges in a gate. To test the the .vi I am using a pulse generator to send the signal to a BNC 2090 and then to a PCI-6251 card. My naive problem is that I'm not sure what physical channel to attach my pulse to on the bnc-2090. The Counter I/O lists Dev1/cntr0 and Dev1/cntr1. I have tried putting the pulse into ctr0out and ctr1out on the BNC-2090, but the .vi is not finding the signal. If I run the Acq&Graph Voltage-Int Clk.vi with the signal in ai0 the .vi does measure the generated pulse.  I would appreciate any and all suggestions.

Thanks,
John
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Hello.

Please disregard above posting. I just needed to delve further into the help. Seems that the cntr0 default for an M series PCI card is pfi8. Now that the signal is wired to pfi8, the .vi runs.

Cheers,
John
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