Sib Geofiz Pribor Ltd
Figure 4
4.2. Switching On and Off
To switch on the Tester, press the ON/OFF button once. At the instant of switching on,
the Tester checks voltage across the battery terminals. If the battery voltage is lower
than or equal to 5.3V, the Tester will give a triple audible signal and turn off
automatically. When the battery voltage drops down to 5.4V in the course of operation,
the Tester will give audible signals every 10 seconds to signalize the necessity of
battery charging.
The battery is charged with a connected external power supply, irrespective of whether
the Tester is switched on or off. After switching on, the Tester is operated from the
external power supply (if it is connected) or from the built-in battery (if the external
power supply is not connected).
Once the Tester is switched on, the program is loaded and all units are initialized. As
this takes place, a splash screen specifying the version number and firmware release
date is displayed. Upon completion of loading, the main menu is displayed, following
which the Tester is ready for operation.
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