Noise: 9215 screw terminals vs 9215 BNC terminals

[LucasDK]

Hi,

We have the 9215 with screw terminals with the possibility to remove electronic noise by grounding the signal using the COM terminal on the module. For various reasons we might be interested in the 9215 BNC version also, however this module does not have a COM terminal (naturally). It only has the BNC plugs. Is the BNC version of 9215 so noise free that grounding is never an issue? Maybe somebody has some practical experience.

Lucas

[lis@jiang]

Lucas,

From the spec sheet of the 9215 manual, pg 13, "The 9215 with BNC has internal circuitry that keeps the voltage source within the common-mode range." This should eliminate noise issues with regards to ground.

https://www.ni.com/docs/en-US/bundle/ni-9215-specs/page/specs.html

Regards,

Lisa