Accuracy of NI X Series Multifunction Data Acquisition

[Carlos Sañduo]

I'm learning to calculate the measurement accuracy from NI USB 6341 data acquisition.

The data sheet shows a example, but I can not get to that result.
My estimate is 2,3 mV and don´t 2,19 uV like the data sheet,

can somebody tell me the error?
and

Where i can find  data acquisition with more accuracy?

[johnsold]

The data sheet example results in ~2e3 uV.  Did you possibly confuse the U.S. usage of "." as a decimal point with the "," which apperently you use?  In the data sheet the figure "AbsoluteAccuracy = 2,190 μV" refers to 2 thousand 1 hundred and 90 microvolts which is close to your 2 and 3/10 millivolts.

Lynn