PCI 7813R ground

[napoy]

Hi, I'm using a PCI 7813R and PCI 6225 cards and I'd like to verify if the D GND, AI GND and AO GND are connected to the chassis/building ground. Thanks.

[JoeySpinella]

Hi Napoy,

For both cards, the AIGND, AOGND, and DGND all are internally connected to the chassis ground (which, if plugged into a properly wired electric outlet, is connected to a building ground).

This is confirmed in both these articles: 

How are the Various Grounds Related in an R Series Device?

http://digital.ni.com/public.nsf/allkb/1670D0423F6A123E862576EB0070D63F?OpenDocument 

Are the Ground on My DAQ Devices All Tied Together?

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000P6lOSAS&l=en-US

[JoeySpinella · Accepted solution]

Hi Napoy,

For both cards, the AIGND, AOGND, and DGND all are internally connected to the chassis ground (which, if plugged into a properly wired electric outlet, is connected to a building ground).

This is confirmed in both these articles: 

How are the Various Grounds Related in an R Series Device?

http://digital.ni.com/public.nsf/allkb/1670D0423F6A123E862576EB0070D63F?OpenDocument 

Are the Ground on My DAQ Devices All Tied Together?

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000P6lOSAS&l=en-US

[napoy]

Thanks Joey. I just got the card and confirmed that the AI Gnd, AO Gnd and DGND are indeed connected using a DMM. Thanks again.