Opticon H21 - Manual (Page 33)

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2.3. Calibrating the Touchscreen
Calibration ensures that the correct screen items are activated when tapped. The first time you
power on the H-21, the system will ask you to calibrate the touchscreen. Tap the center of the cross
using the stylus until the calibration is complete.
To recalibrate the screen at any time:
1.
Tap > Settings > System > Screen > Alignment.
2. Tap the Align Screen button and follow the on screen instructions.
3. Tap OK to save and exit.