User manual

Capacative Touch Screen (Option)
General
The TFT Touch Screen works according to the principle of a change in
analog capacitance. It has a glass screen with a transparent, thin-film over-
lay on the surface. This is fully sealed and protected by a further layer of
clear glass. Electrodes on the edges of the screen provide a uniform
low-voltage field. As soon as you touch the screen with your finger the
contact point is “recognized” by the change in capacitance.
Because this takes place very quickly - 15 milliseconds after being touched
- the Touch Screen is optimally equipped for a number of different require
-
ments and applications.
31
CAPACATIVE TOUCH SCREEN (OPTION)