User's Manual

8
Fig. 2 Operating -and Connection elements
a Connection Cable with 6,35mm phone plug for connect to the aircraft interface
b LED for displaying the state of battery charge
c ON-/Off-Switch with interlock. For unlocking toggle switch pull and then switch to position OFF or
ON
d Red pushbutton bank
Microphone ON/OFF - One of the pushbuttons at the pushbutton bank has to be pressed to switch
off the duplex communication between the mobile users with the standard device outside and the
aircraft crew. The aircraft crew can hear nothing from the outside. The mobile users can receive
from the aircraft crew. The mobile users can receive however from the aircraft crew.
All pushbutton of the pushbutton bank can be used for subscription of the standard devices (see
section 8)
e Removable cover for the battery compartment
2.3 Power supply and operating time
Power for the device is supplied either by three rechargeable NiMH batteries 1.2 V type Mignon AA or
by 3 alkaline batteries 1.5 V type Mignon AA in the battery compartment. With fully charged
rechargeable NiMH batteries 1.2 V/2300
mAh the operating time for continuous operation is approx. 15
hours. For charging, the batteries have to be removed from the device.