20
21
u
Headphone: according to regulation RTCA/DO-214
u
Microphone
U
Directivity: noise-canceling
U
Max. sound pressure (@ 10% THD): 120dBA
u
Loudspeaker systems
U
Type of loudspeaker: Balanced Armature
U
DC bias voltage: decoupled
U
Max sound pressure (ambient): 84dBA
U
Max sound pressure (communication): 98dBA
U
Frequency range: 500Hz – 4.4kHz
U
Speaker impedance DCR: 48Ω
u
Power source
U
Communication: Aircraft audio panel (no batteries)
U
Dynamic hearing protection & ambient awareness:
Battery powered, 1 battery type AAA
u
Voltage
U
Aircraft audio panel: 4-20 V (MIC biasing)
U
Battery powered: 1-1.5V (alkaline or rechargeable)
u
Headset weight: 75g
u
Storage temperature: -20°C - +60°C
u
Operations temperature: -20°C - +60°C
F Technical
Data
G Troubleshooting
G1 Communication
Problem: No communication possible
u
Check that the headset's QD-connectors are connected correctly.
u
Check that the headset's connector is inserted correctly in aircraft panel.
u
Check that the aircraft panel volume controls are not set too low.
u
Check the aircraft fuse of circuit breaker.
u
Try using the headset in a different headset socket.
u
Disconnect the QD-connectors and check for damage of connector or pins.
u
Check if the connectors from the earJack adapters are correctly attached to the
cables of the control box (connectors with safety break points).
u
Disconnect the headset connector from aircraft panel and check for connector
or pin damage.
u
Try to use another headset. If the problem persists then it is probably aircraft
panel related. If you conclude it is a headset problem, contact an authorized
Phonak dealer.
Problem : Beginning of sentence are cut (boom microphone switching on too late)
u
If VOX system is activated on the audio pannel (in which the intercom becomes
active automatically when a crew member begins to speak), adjust the VOX
sensitivity by turning the dedicated knob.
Problem: Beep every 30 seconds in headset
u
Battery is on low level 1 replace battery
(section C3)
Problem: Beep every 5 seconds in headset
u
Battery is on low level 2 replace battery
(section C3)
