what is the minimum signal strength required for the 6211 DAQ card for the analog input

[Dennis_Knutson]

You seemed to have clicked the Post button before entering anything into the message body. Repost with details on what you want to know.

[Ravi_Shankar]

As I understand your question; you want to know the minimum voltage that can be measured using DAQ 6211

It depends on the range of your input operation.

Voltage Range : -10V to 10V; Range Accuracy : 2.69mV.

Meaning you can measure upto as low as 2.69mV accurately. 

Voltage Range : -200mV to 200mV; Range Accuracy : 0.088mV

Meaning you can measure upto as low as 0.088mV accurately. 

thanks,

Ravi.