NI 9203 2 signals, both minus pins to com port (port 9)?

[jopi18]

Hi All,

is it rigth to connect both minus pins (from 2 analogue current signals) to the com port?

Thx in advance.

Kind regards,

Jörg

[MHoffmann]

Hi Jörg,

I think this document should answer your question:

http://www.ni.com/white-paper/7113/de/

COM is is internally connected to the isolated ground reference of the modules. 

Regards,

Michael