Using The Instrument; B.1 Power-Up; B.1.1 Battery Replacement; B.1.2 Back-Up Battery (Date And Time) - AOIP TC6621 Mode D'emploi

TC-TM 66XX
B. USING THE INSTRUMENT
In order to use the device in all the safety required, all operators must read the paragraph on safety carefully, along with
the paragraph below.
B.1 Power-up
B.1.1 Battery replacement
The instrument is supplied with four 1.5V AA batteries. The batteries must be installed in the battery compartment in the
back of the instrument. To open the compartment, remove the cover screw. Screw the cover back on after inserting the
batteries.
Pay attention to the polarity when installing the batteries as an error could damage the instrument. The polarity is indicated
inside the compartment cover.
The figure below illustrates how to open the battery compartment as well as the correct positioning of each battery.
Battery compartment
screw
Product code label
location
After inserting the dry cells (or NiMH batteries) correctly, press the ON/OFF key to turn ON the product.
To turn the unit off completely, press the ON/OFF key until the "Instrument in power off mode" screen comes up.
Date and hours are saved by a lithium battery.
B.1.2 Back-up battery (date and time)
The back-up of the date and time when the unit is powered down is guaranteed by a 3V lithium battery – type CR1225.
The battery is located inside the unit and can be accessed by removing the 5 screws on the back of the unit.
B.1.3 The keyboard
The keyboard features:

2 function keys (F1 and F2) for the selection of the various menus displayed on the screen.

The navigator, consisting of 4 arrows (up (), down (), right (), left ()

A clear key (CLEAR).

A device on/off and backlighting on/off key (ON/OFF).

Press briefly to start the device. During operation, press briefly to turn the lighting on or off. Press it longer for 2
seconds to stop the device.

A validation key (VAL).

A HOLD key allows you to suspend a process temporarily
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USING THE INSTRUMENT