8
9
Control Unit Features
(Continued)
Control Unit Features
1. Fail-Safe Headset. If batteries are dead or the unit is turned off, microphone
and earphones will function when connected to aircraft intercom.
2. The X11 headset is shipped with the Auto Shutoff feature disabled.
In this mode, the headset will function whenever the ‘ON/OFF’
switch is set to ‘ON’.
• Auto Shutoff can be enabled via a small switch located under
the batteries
• LED will flash GREEN when ENC power is on and operating properly
• Flashing RED light indicates low battery power/time to change batteries
• All features continue to function in auto shut-off mode when
‘ON/OFF’ switch is ‘ON’ and
– Headset is connected to the aircraft intercom OR
– Cell phone is connected and active
3. Auxiliary Audio (Interface to cell phone or stereo source)
• Control Unit features a 3.5mm, 4- contact jack to accept
external audio inputs
– A choice of any of the three provided custom cords allows
interface to standard stereo sources (MP3, iPOD or CD players)
and cell phones.
Note: Cords are color coded: (Gray) standard cell phone adapter;
(Black) Nokia cell phone adapter; (White) aux. audio/music input.
The straight plug on each cord is always installed into the control
unit. Volume must be adjusted by external audio source and is
NOT controlled by volume controls on headset.
– Cell phone interface via standard 2.5mm, 3-contact, stereo plug
(right angle) OR 2.5mm, 4-contact plug (right angle).
(See cell phone operating instructions to select the appropriate
cable for your phone.) Cell phone audio is supplied to both ear-
phones, independent of stereo/mono select switch on control unit.
4. External Audio Management
• Aux/stereo audio is muted upon receipt of comm. audio to
ensure integrity and clarity of voice communications. Any voice
on the intercom will cause external audio to mute during the
conversation and approximately 1-2 seconds upon conclusion
of the conversation
5. Cell Phone Interface
• Cell phone conversation does not mute during receipt of
Comm. Audio
• All intercom parties hear cell phone outbound audio but
cell phone recipient’s voice is heard only by the headset
connected to the cell phone
• Sidetone is present when connected to aircraft intercom.
Sidetone may not be (dependent on cell phone functionality)
present when using the headset and cell phone when not
attached to the aircraft intercom
6. Auto-shutoff feature:
For battery power (X11 Model) operation
, switching the
auto-shutoff to the ‘ENABLED’ position will shut down the control
unit if ENC power is accidentally left ‘ON’ after flight to prevent
battery power drain.
For permanent panel mount (X11P Model) operation
,
the auto-shutoff should be switched to the ‘ENABLED’ position
to prevent optional battery power drain after the aircraft power
has been turned off. X11P control unit will function, without
batteries, if connected to aircraft.
7. When X11 or X11P headset is used outside the aircraft:
• Cell Phone feature is operational
• Aux. music feature operational with auto-shutoff
in ‘DISABLED’ position
