Measurement Computing PCM-DAC02 - Manual (Page 11)

5 CALIBRATION
The PCM-DAC02 is hardware calibrated and tested at the factory. All calibration
after initial manufacturing is done via software. The calibration factors are stored on
the PCM-DAC02 and should be applied through software every time the board is run.
Never attempt to open the case since there are no parts inside that you can service.
There are no socketed components.
If you are using the Universal library, you can set software calibration factors for
offset and gain using the Calibration option of InstaCal. These factors will be applied
to outputs made by any of the D/A routines called from any of the language libraries
of Universal library.
You will need a precision calibrated DVM having better than 1/4096 resolution.
After calibration factors are set, they are stored in the PCM-DAC02. These
calibration factors are accessed by Universal library and InstaCal and applied to any
output codes sent to the PCM-DAC02. If you use direct register programming be sure
to access and apply the calibration factors.
Calibration factors may be reset at any time by running InstaCal calibration. Choose
Calibration from the InstaCal menu, and follow the instructions. Press F1 for help.
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