User's Manual

Table Of Contents

3.2 On-air subscription of the first Transmitter/Receiver Unit of group 1

Î NOTE

The Transmitter/Receiver Units are subscribed in pairs (group 1 and 2 see section 1), but one

after the other, to the Aircraft Interface. First the two Transmitter/Receiver Units of group 1

are subscribed one after the other to the Aircraft Interface and then the two

Transmitter/Receiver Units of group 2 are subscribed one after the other to the Aircraft

Interface (see section 3.1).

Two Transmitter/Receiver Units can never be simultaneously subscribed to the Aircraft

Interface. The Transmitter/Receiver Units must always be subscribed one after the other to

complete a group.

For subscription the Aircraft Interface must always be switched on before the

Transmitter/Receiver Unit.

a. Connect the first headset of group 1 to the first Transmitter/Receiver Unit of group 1 (identifiable by

the red colored push-button bank) via the connecting cable and plug of the headset. Open the

carrying bag for the Aircraft Interface by means of the zip.

b. At the Aircraft Interface press the red subscription push-button »T« (Fig. 10/i) for group 1, keep the

red push-button »T« pressed and switch on the Aircraft Interface by means of the green push-button

ON (Fig. 10/e). The control lamp (Fig. 10/f) illuminates. After switching on keep the red subscription

push-button »T« pressed for at least 10 seconds. Than immediately carry out step »c«.

c. At the first Transmitter/Receiver Unit group 1 with red colored push-button bank press the

subscription button 1 simultaneous with subscription button 5 located at the begin and end of the

push-button bank (Fig. 6/c). Keep the two push-buttons pressed and switch on the

Transmitter/Receiver Unit by means of the On/Off switch and volume control (rotary knob Fig. 6/b).

After switching on keep the two push-buttons pressed for at least 10 seconds.

The subscription procedure on the Transmitter/Receiver Unit has to be started within 2

minutes after the subscription procedure on the Aircraft Interface was started, otherwise a

»Time Out« may occur (see section 3.1).

After approx. 30 seconds a high double-beep tone can be heard in the headset. This indicates that

the on-air subscription has been successfully completed. A second high double-beep tone finally

reports that the Transmitter/Receiver Unit has synchronized itself with the Aircraft Interface.

3.3 On-air subscription of the second Transmitter/Receiver Unit of group 1

a. Switch off the Aircraft Interface with the red push-button OFF (Fig. 10/g). The control lamp (Fig. 10/f)

extinguishes.

b. Connect the second headset of group 1 to the second Transmitter/Receiver Unit of group 1

(identifiable by the red colored push-button bank) by means of the connecting cable and plug of the

headset. Ensure that the Transmitter/Receiver Unit is switched off. The on/off switch and volume

control (rotary knob Fig. 6/b) must be set to OFF .

c. Repeat the subscription procedure for the Aircraft Interface and the second Transmitter/Receiver

Unit of group 1 as described in section 3.2, steps »b« and »c«, for the Aircraft Interface and for the

first Transmitter/Receiver Unit of group 1.

3.4 On-air subscription of the first and second Transmitter/Receiver Unit of group 2

The subscription procedure for the Aircraft Interface and the two Transmitter/receiver Units of group 2

(identifiable by the black colored push-button bank) is carried out as described in sections 3.2 and 3.3

for the two Transmitter/Receiver Units of group 1. At the Aircraft Interface the black subscription push-

button »W« (Fig. 10/h) for group 2 is used instead of the red push-button »T« for group 1 (Fig. 10/i).