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It may occur that the device cannot be powered on during an active
charging process. In such case disconnect the device, start it up, then
reconnect to the charger.
The battery is charged continuously as long as the device is connected w ith
the USB-cable to either a booted PC or Notebook, or to the pow er supply
plugged into mains.
Fully charged the battery supports 3 hours of continuous stand-alone
operation.
The Lithium- Ion battery does not age prematurely if the device remains
connected to a pow er source whenever it is not used stand-alone.
After pow er on in stand-by menu, it is possible to select different
backlight settings:
o Press F1 to select 100% backlight w ith backlight off after 20
seconds and use KEY_UP or KEY_DOWN to adjust
backlight.
o With F2, you select 70% and can use KEY_UP and
KEY_DOWN for modification of backlight WITHOUT
backlight off after 20 seconds.
o With F3, you select 50% and can use KEY_UP and
KEY_DOWN for modification of backlight WITHOUT
backlight off after 20 seconds.
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