Best Place To Connect Shield To NI-9237?

Updated Jun 30, 2018

Reported In

Hardware

  • NI-9237

Other

Full-Bridge Load cells

Issue Details

I have some load cells connected to my NI-9237 and I would like to know which is the best terminal to connect my shield to it.

Solution

The shield can be connected to the EX- terminal of the module, to have the best noise rejection.

Additional Information

From page 12 of the NI-9237 Getting Started Guide, you see that the best terminal to connect the shield is the EX-.
Also, from the figure of the circuitry found on page 4 of the NI-9237 Datasheet, since EX- is wired to the reference of the excitation sourcing, it would be the best place to this connection.

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