4-Point calibration
During calibration, the symbol of a cross with a circle will gradually appear in each corner of the display. For
proper calibration, it is necessary to hold down the center of the symbol until it turns blue. In this way you
ensure the setting of the exact value of position for the pressing point on the display.
calibration points constellation during 4-point calibration
Figure 2.4.
clear and calibrate
This command deletes all calibration settings of parameters on the touch screen display and subsequently
performs a 4-point calibration.
linearization
This is the calibration of the 9 or 25 points which are evenly distributed on the touch screen display. By
performing linearization, you will achieve a higher precision and linearity of the touch screen panel. The
process for linearization is similar to that of 4-point calibration.
calibration points constellation during linearization
Figure 2.5.
Draw test
This tool serves for verifying the accuracy and checking the functionality of the touch screen panel. The “Clear“
button clears the surface and deletes all objects drawn. The command “Quit“ terminates the drawing tool.
26
Using the device
&/(-*4)