Motorola HK1223 Owner's Manual page 112

greater the accuracy. Errors in calibration may occur due to viewing angle, or
individual skill, and there may be little difference in using 16 or 25 points. Note
that a stylus is recommended for the most accurate results.
If there is distortion problem in your touch panel, please
use the Advance Calibration function.
Standard Calibration is basic calibration function and cannot correct touch
panel distortion problems.
Advance Calibration improves touch panel distortions due to its high precision
technology.
2. Please cancel the function "Automatic Rotation Detection". (See Fig1)
Because use the function key "Fn + F9 "(CRT/LCD/Simulscan toggle)
system standard will appear a calibration screen. (See Fig2)
6-10 Installing Software Drivers