Promax US TV EXPLORER II, User Manual

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USER’S MANUAL. US TV EXPLORER II
01/2008 Page 15
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3 INSTALLATION
3.1 Power Supply
The US TV EXPLORER II is a portable instrument powered by one 7.2 V - 11 Ah
Li-Ion battery. There is also an external DC charger provided for mains connection and
battery charging.
3.1.1 Operation using the External DC Charger
Connect the external DC charger to EXT. SUPPLY [32] on the US TV
EXPLORER II side panel. Connect the DC charger to the mains. Then, press the rotary
selector [1] for more than two seconds. The level meter is now in operation and the
battery is slowly charged. When the instrument is connected to the mains, the
CHARGER indicator [4] remains lit. This indicator changes of color according to the
battery charge status:
BATTERY CHARGE STATUS
OFF ON
RED < 50 % < 90 %
YELLOW > 50 % > 90 %
GREEN
100 % 100 %
Table 1.- Indication of the battery charge status ( CHARGER ).
3.1.2 Operation using the Battery
For the device to operate on the battery, disconnect the power cable and press
the rotary selector [1] for more than two seconds. The fully charged battery can power
the equipment for more than 4.5 hours non-stop.
If battery is very weak, the battery cut-off circuit will prevent the device from
functioning. In such a situation battery must be recharged immediately.
Before taking any measurements, you have to check the charge status of the
battery by checking the battery charge level indicator that appears when activating the
measurement mode by pressing [12] key. These are the indicators on screen: