AA80 InterVOX Intercom Systems
SM08 Installation and Operation Manual
April 30, 2012 Rev: 5.00 Page 3-2
ENG-FORM: 806-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
3.5 ICS Functions
AA80-001 and AA80-060
Intercom audio may be generated in two modes between users, “LIVE” (on constantly), or “VOX” (voice
activated). This is selected, along with the squelch threshold of the VOX circuit, by the “VOX SQUELCH”
control on the front of the AA80. When the VOX trigger is activated, the front panel indicator will light up
amber, indicating that the ICS system is ON.
AA80-020 and AA80-062
Intercom audio may be generated in three modes between users; “LIVE” (on constantly), “VOX (voice
activated), or PTT (push-to-talk). This is selected, along with the squelch threshold of the VOX circuit, by
the “VOX SQUELCH” control on the front of the AA80. When the VOX trigger is activated, the front panel
indicator will light up amber, indicating that the ICS system is ON.
Mode of Operation
Position of VOX Control
LIVE Fully counter-clockwise
VOX Mid-position (typical)
PTT Fully clockwise
Intercom level or volume is set by the “ICS VOLUME” control on the front of the AA80. It does not affect
the level of other audio within the system.
ICS functions are available to all users when the system switch is in the “INTERVOX” mode. When it is in
the “PILOT ISOLATION” mode, only the co-pilot and the two passengers have ICS capability.
3.6 Emergency Operation
If power is lost to the AA80 for any reason, it will drop into the power-fail mode, and the pilot will be
connected directly to the radios for emergency operation. The external PTT switch will still function. This
mode is similar to the “PILOT ISOLATE” mode, except that all co-pilot and passenger functions are lost,
since they depend on external power. A power failure has occurred when the panel indicator fails to light
under any condition.
If a catastrophic relay failure of the AA80 should occur, or the rear connector becomes loose or
disengaged, the designated emergency hand mic and headset jacks will allow operation to continue, as
they have no connection directly through the AA80.
The “PILOT ISOLATION” mode required no power, and will operate even if other circuitry should fail in
the AA80. Note that during this mode, the co-pilot’s mic IS NOT locked out, and he could transmit,
although he could not receive the incoming audio.
All aspects of emergency operation should be confirmed to be working by the pilot before accepting the
aircraft into service.
End of Section 3.0
To Previous Page
Loading...
Need help?
General
