E
thernet
P
anel
Hardware EthernetPanel
38
DVS
48961 V3.0
© 2010 by Grossenbacher Systeme AG
8.2 P
OWER UP FUNCTION TEST
Devices with infrared touch-screen
The EthernetPanels carries out a function test of the touch-screen with each
power up of the device. All IR channels are tested during this stage. Faulty
IR channels are indicated graphically and displayed on screen with an error
message. The failure of IR channels is normally due to severe contamination
of the IR transparent plastic frame which consequently has to be cleaned (
Î
Section 10). The optical elements of the light matrix are located behind the
IR transparent plastic frame in the front of the device.
IR channels that are continuously interrupted will be detected by the touch
controller after a timeout of approx. 15s and no longer included in the
evaluation. In extreme cases, this may mean that individual zones cannot be
touch activated.
Do not touch the screen whilst the system is being
started up, and wait till your application has started.
During the startup the touch screen carries out a
function test.
Devices with resistive touch-screen
Because of function principle it is not possible to do a function test on
devices with resistive touch-screen.
DVS 48961-V4.0
Summary of Contents for 50 81 332
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