Hi everyone, I'm using a PCI 6534 for some input and output applications in buffered mode. I have a simple sampling application using the PCI 6534 board with a sampling rate of 20Ms/s. As you can see int the files below, I want to sample a clock signal generate from an external device. This clock signal is at 100kHz. Sampling at 20MHz generats a bad spy file as you can see in the file file_bad.txt Taking into account only one sample per two, I have a good spy file file_good.txt, but with that method I have only half of the samples, so like sampling at 10MhZ instead of 20MHz . My clock signal is connected to DIOC0 and there is nothing connected to the others lines. I don't know what is wrong. Thanks for helping.

Digital I/O

Hello,

It seems to be an incorrect behaviour of the device. Please contact NI to repair the card.

Regards.

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