Advantech MIC-3716 Manual page 74

Step 3: Adjust the registers until they fall between the input voltage
from the standard voltage reference and the receiving voltage
reflected in the Manual A/D Calibration tab.
D/A channel Manual-Calibration
Step 1: Click the Manual D/A Calibration tab to show the D/A channel
manual calibration panel. The two D/A channels are
individually calibrated. Before calibrating, create your desired
output voltage from the D/A channels and measure it through an
external precision multi-meter.
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