Keysight DAQ970A Guide D'utilisation page 261

4 Measurement Tutorials
DAC errors
The output of a DAC varies with temperature. If possible, you should operate the instrument at a stable temperature
and as close as possible to the calibration temperature of the DAC for greater accuracy, or perform autocalibration
to recalibrate the DAC if the temperature has changed much from calibration temperature.
The output of a DAC also exhibits two other types of errors: differential error and integral error.
Types of errors
Differential error
Integral error
261
Description
Refers to the smallest possible change in voltage.
The DAC output is not linear, but is stepped as progressively larger (or smaller) voltages are pro-
grammed. The step is in 100 μV.
Refers to the difference between the programmed voltage and the actual output voltage from the
DAC.
Keysight DAQ970A/DAQ973A User's Guide