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How to connect the 8 current input signals to NI PXI 6238 current card?

Dear All,

 

           I'm having 6238 current card. I have to connect 8 current(sensor) channels to NI PXI 6238 current card. I given the connection as per as the manual of PXI 6238 (METHOD 2)[https://www.ni.com/docs/en-US/bundle/pci-pxi-6238-6239-features/resource/371913a.pdf]

In method 2 the AI - pin have to connect to AI GND. But i'm having 8 current channels. How to Ground the negative pins of all channels?

 

            While i'm occuring the data's the signal getting distorted. Noise has comming. Give me the solution for this.

 

Srinivasan.P

Bangalore.

Mail ID: srineeooty@gmail.com

Regards,
Srinivasan.P
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