User Manual

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15.1.6 External Voltage Calibration
Connect a DC power supply to pin 1 and pin 14 of Digital IO. The DC power must be able
to supply 10V.
CAUTION:
The DC source for external voltage control and the DC source for external voltage
calibration should be identical. And the external voltage calibration should be completed
before using external voltage control function.
Press System → Next → External Calibration softkeys in Setting and Measurement
screen.