Advantech PWS-770 User Manual page 27

2. Tap the Calibrate tab and you will see two options:

Standard Calibration: select this option to start 5 points Standard Calibration.

Advanced Calibration: select this option to use 4, 9, 16, or 25 points to cali-
brate the screen. Check Plot calibration data to enable touch panel linearity
comparison graph. The blue lines show linearity before calibration and black
lines show linearity after calibration.
3. Touch the points as displayed onscreen using the pen.
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