USB-6453 - What Is the common mode range adjustable to (i.e., something other than gnd/0v) at 0.2, 2.5, 5, and 10V input ranges?

[Johnm719]

USB-6453 - What Is the common mode range adjustable to (i.e., something other than gnd/0v) at 0.2, 2.5, 5, and 10V input ranges? Or is it simply not adjustable?

[Johnm719]

USB-6453 - What is the common mode range at the 0.2, 2.5, 5, and 10V input ranges?

[santo_13]

Please do not create duplicate posts - https://forums.ni.com/t5/Multifunction-DAQ/USB-6453-What-is-the-common-mode-range-at-the-0-2-2-5-5-a...

No, common mode must be AIGND which must be almost 0V. This is not a isolated DAQ to allow higher common mode voltages.

[crossrulz]

I merged the two threads.

The specification is quite clear that all input voltages must be within the range relative to AI GND. So if you are on a 10V range and you have a differential signal of 1V with a common mode of 8V, you will be fine (8V + 1V = 9V, which is still less than 10V).