7Tutorial
336 Keysight 34970A/34972A User’s Guide
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.
The output of a DAC also exhibits two other types of errors: differential error and
integral error.
– Differential Error refers to the smallest possible change in voltage. The DAC
output is not linear, but is stepped as progressively larger (or smaller) voltages
are programmed. The step size is 1 mV.
– Integral Error refers to the difference between the programmed voltage and
the actual output voltage from the DAC. This error is included in the output
specifications shown in Chapter 8.
Differential Error
Integral Error
V
out
V
programmed
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