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Multifunction DAQ

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grounding on PCIe

grounding on PCIe

‎02-12-2021 03:10 PM

 

I have a PCIe-6321. I am using it to generate a pulse (PFI12, DGND) which drives an optocoupler. I understand all GNDs (AI, AO, D) are internally connected, but are these eventually connected to mains earth as well through PCIe connector and PCs power supply ? or is it effectively a floating signal source ?

 

Mete

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