3.3
Controls
Duplex communication between »mobile« users
After switch-on of the CT-DECT Case (8) and the CT-DECT devices (PP) and successfully completed
automatic establishment of connection (see chapter 3.2.3) the units are ready for duplex communica-
tion within the working range between CT-DECT devices (PP) and CT-DECT Case (8). Microphones
and headsets are permanently switched on. Each user can speak in its headset microphone and hear
in the earpiece of his headset the conversation of the other users. Adjust the communication volume
with the volume control for your headset earpieces. Never adjust the volume higher than necessary for
clear and proper communication.
Communication between »mobile« users and the aircraft intercom system
With the help of the PTT button on the headset, communication between »mobile« users and the crew
of the aircraft is possible, while the PTT button is pressed.
Pressing the »COM ON/OFF« buttons on the CT-DECT devices (PP) once establishes communication
between »mobile« users and the crew aboard the aircraft; pressing a second time cuts the communica-
tion off.
If the communication between »mobile« users and the aircraft crew is OFF, a high double beep sounds
in the headset after pressing the buttons. Now, communication is switched on.
If the communication between »mobile« users and the aircraft crew is ON, a low double beep sounds in
the headset after pressing the buttons. Now communication is cut off.
Only the »mobile« user establishing the intercom connection is connected with the crew of the aircraft
and only he can terminate the connection.
3.4
Operating under special climatic conditions
The system is tested and approved for use within a working temperature range from -30°C up to +55°C.
Exceptions apply to batteries and charging devices.
Rechargeable batteries
Very low or very high temperatures affect the life of rechargeable batteries.
Rechargeable batteries may only be used in the temperature range from 0°C to +50°C. At temperatures
below 0°C we recommend the use of alkaline batteries.
As CT-DECT devices (PP) are used close to the body, temperatures below 0°C are rarely seen.
4.
Maintenance and proper care
4.1
Visual inspection
Inspect the system and particularly cables and connector assemblies regularly for signs of cracks, fis-
sures, and deterioration.
4.2
Cleaning
After every use the entire system should be cleaned.
ATTENTION!
Pay attention that no humidity could penetrate into the device during cleaning.
Do not use solvents (e.g. benzene, alcohol, etc.) for cleaning!
Remove loose dust with a soft brush. Clean the outside of components, if necessary, with an appropri-
ate clean cloth, only lightly moistened with clear water, and then rub it down thoroughly. If heavily
soiled, a few drops of rinsing agent may be added. Clean the connector pins with a commercial clean-
ing agent.
15
Друкувати сторінку