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Should I connect the rest of my ACHi to AIGND?

Hello everyone,
 
I am using Labview 7.1 with 6221 card.
 
I am using ACH15/ACH7 and ACH14/ACH6 to read 2 different voltages from 2 sensors ( DIFF mode). I have put a biais resistance ( 10Kohms) between ACH15 and AIGND and an other one between ACH14 and AIGND.
 
I would like to know what to do with the other Analogical Channels?  Should they all be directly connected to AIGND?
 
Any help would be great,
 
Regards,
 
Toto
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Hello Toto,
 
if you don´t use the other channels, you don´t have to connect them with ground or other defined levels.
It is only necessary, that the used and measured channels are connected in the right way.
 
 
Regards
ThomasD
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Hi Thomas,
 
Thanks for ur answer.
 
Regards,
 
Marc
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