Touch Screen Calibration Procedure - gefran 3850T Use And Installation Manual

2. INSTALLATION
2.9.

Touch Screen calibration procedure

Step 1 – Power off the unit and locate the "SEL" rotary
switch on the right side of the unit case
Step 2 – set the switch to the "E" position
Step 3 – Power on the unit ; the touch-screen calibration
page should appear
Touch the cross-hair to calibrate the upper left corner
position.
It is recommended to use a pen tip rather than fingers to
improve accuracy.
30
Step 4 – Proceed to calibrate all corners and screen centre
in the same way:
Upper right corner
Lower right corner
Lower left corner
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