Question regarding USB 3100 series datasheet

[Arne Borchert]

Hi!

 

I have a short question regarding the datasheet for the USB 3100 series: On page 5, the specifications for differential nonlinearity list a larger tolerance for the calibrated ranges than the uncalibrated ranges, for both voltage and current output. Is that an error in the datasheet or am I misinterpreting it?

[DAQman]

Engineering notes as to how the specifications were determined are not readily available. However, the uncalibrated values appear to have been lifted directly from the DAC8554 digital-to-analog convert specification sheet. The calibrated values, on the other hand, consider all the components and errors in the calibration algorithm and equipment. I would disregard the uncalibrated values.