Aethra D2000 Lite, User Manual, Page: 155 / 186

USER’S MANUAL ISDN TESTER AND ANALYZER D2000
PRO
/D2000Lite/D2000
Fig. 12-1 Charging the Batteries
No damage will occur to the instrument if you leave it charging for
long periods, i.e. during the weekend.
12.3.2. Extending Battery Operating Time
Charging the batteries when they are not completely empty, reduces the battery
operating time. To keep the batteries in optimal condition, observe the following
guidelines:
►
Operate the instrument on batteries until the symbol appears at the top of
the screen. This indicates that the batteries are very low and that they need to
be recharged.
Operating time will be reduced if the instrument is used or handled at temperatures
that differ from the recommended values.
12.3.3. Dimming the Backlight
At power-up the screen has a high bright display.
To save battery power, the screen has an economic brightness when operated on
the battery pack (no power adapter connected). When you connect the power
adapter, the screen automatically changes to maximum brightness.
If you have not pressed a key for at least five minutes, the backlight goes down to low
level.
CHAPTER 12 - MAINTAINING THE INSTRUMENT
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