what is the error that I can expect in SCXI 1125 when feeding a DC Voltage

[T Sreedhar]

hi,

when I am feeding a DC voltage of 3.204VDC, I am acquiring 3.1948 to 3.2004VDC which is around 4-5mV is this difference ok? I am using 6071E DAQ Card.
I am setting a gain of 1, Filter 10KHz, TB gain 0.01 and I am using SCXI 1313.

plz help

[LucaP.]

Hello,

The difference of +-5mV is ok when you're using 3.2VDC as input. NI has an "Accuracy Calculator" on the web where you can check how precise your DAQ Setup should be. I entered you're values and I received a total system accuracy of about +/- 20mV. You see, that you're in this range.

You'll find the accuracy calculator here: http://www.ni.com/advisor/accuracy/

Hope this helps.

Luca