Fig. 5-17: Adjusting Registers - Advantech MIC-3716 Manual

Step 3: According to the difference between the output voltage from
D/A channel and the value in the multi-meter, adjust the gain,
bipolar offset and unipolar offset registers (Fig. 5-17)
Step 4: Adjust registers until they fall between the output voltage from
the D/A channel and the value in the multi-meter.
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Fig. 5-17: Adjusting registers