8.8“ Touchscreen Colour Display AHD 880 TC
Operation
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V5
7.8
Brightness Control
The Color Display AHD 880 TC’s operating elements include glare-
free lighting for nighttime use. The light sensor in the device front is
used to automatically adjust the brightness, depending on the am-
bient lighting.
The TFT-
screen’s brightness is also dimmed via the light sensor
and is additionally temperature controlled. It follows these guide-
lines:
The brighter the environment, the brighter is also the TFT-
screen’s background lighting.
The darker the environment, the darker is also the TFT-
screen’s background lighting. The darkest point can be set by
the user and is stored.
TIP!
When a certain interior temperature of the housing
is exceeded, the TFT screen’s background light-
i
ng’s power is reduced or completely switched off.
The brightness is primarily dependent on the ambient brightness. If
the device operates in high environmental temperatures, it auto-
matically dims to avoid overheating the unit and to protect the
hardware. The brightness is reduced by up to 20%. If this is not
sufficient to reduce the temperature, the lighting is completely
switched off. If the device cools off, the lighting automatically pow-
ers back on.
7.9
Power Off
The Color Display AHD 880 TC is completely powered off by
switching off the connected power supply.
TIP!
It is not possible to fully power off the device with
the “Power” key. This key only put the color display
into standby mode. The device’s power supply re-
mains active.
The device can be reactivated at any time by
touching the touch surface.