Instructions

English

3.2 Function keys

The keypad consists of 18 keys. The keys from 0 to 9 and the decimal point are used to enter

numbers

Key

Name

Function

Up / + key

Press to select different window or enter numbers

Down / - key

Back key

Press to go one step back or move cursor left

ENTER key

Press to confirm or make a selection

MENU key

Press to enter menu mode or press followed by

two digits to enter a certain menu window

ON / OFF key

Press to switch ON / OFF

Reset key

Press to reset device to factory default settings

4 Getting started

4.1 Internal battery

The device can be powered either by the internal rechargeable battery (more than 12 hours with

continuous operation) or via the mains adaptor.

During charging, the LED glows red. It will turn green as soon as the battery is fully charged.

When the battery is fully charged, the voltage is approx. 4.25 V. The voltage is shown in window

M07. The battery is nearly flat when the voltage falls below 3 V. The device also indicates the

remaining battery life which is determined internally via the voltage. The indication of the remaining

battery life is just a rough guide value.

4.2 Power on

The device can be switched on via the ON key and switched off using the OFF key. After switching

on, the device runs a self-diagnostic programme. The hardware and the internal software are tested.

If an error is detected, this will be shown in the display.