Wincor Nixdorf BA82 /cTouch, User Manual

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Capacitive Touch Screen
Ge ne ral
The TFT Touch Screen works ac cor ding to the prin ci ple of a chan ge in
ana log ca pa ci tan ce. It has a glass screen with a trans pa rent, thin-film
over lay on the sur fa ce. This is ful ly sea led and pro tec ted by a furt her lay er
of cle ar glass. Elec tro des on the ed ges of the screen pro vi de an uni form
low-vol ta ge field. As soon as you touch the screen with your fin ger the
con tact point is “re cog ni zed” by the chan ge in ca pa ci tan ce.
Be cau se this happens very quic kly, the Touch Screen is op ti mal ly equip ped
for a number of different requirements and applications. The pro gram ming
in ter fa ce of the screen is iden ti cal to the mou se in ter fa ce.
Connecting a BA82 for the first time we approve to calibrate the Touch
Screen. Details depend on the Operating System that you use.
How to Ope ra te
The Touch Screen re sponds to the slightest con tact, the re fo re you do not
have to ap ply pres su re when wor king with the screen. Tou ching the touch
glass has the same ef fect as cli cking the left mou se but ton. You only need
to ap ply a litt le pres su re with the fin ger tip. In this ca pa ci ti ve pro cess only
fin ger tip con tact is re cog ni zed. The touch screen does not re act in any way
if tou ched, for ex am ple, with a pen.
7
CAPACITIVE TOUCH SCREEN
Cle ar glasscover
Con duc ti ve pro duct layer