AA86/87 Stereo Intercom Manual
SM48 Rev. 4.00
Page 1-2
Nov 12, 2003
ENG-FORM: 800-0106.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
An audible warning to the pilot and co-pilot is triggered if any transmitter is keyed for
more than 30 seconds. (This usually indicates a stuck microphone condition.)
In the event that failure occurs in the power source to the AA86 and AA87, the Fail-safe
mode activates automatically, routing the pilot's headset directly to the audio panel or
radio source. If a partial failure occurs within the intercom, it can be manually switched
to the Fail-safe mode by turning the system off.
1.4 Specifications
1.4.1 Electrical
Specifications
Inputs:
Power
10 - 32 Vdc @ 0.25 A nominal
Microphones 2/4/6
standard
carbon or carbon equivalent (250 mVrms full
output, 150
Ω
). Individual gating with adjust depth
Music
1 stereo input (AA86) - 2 stereo inputs (AA87)
(Compatible)
Portable Tape/CD, & CD changers with low level pre-amp/
CD Line output
Radio 1
k
Ω
, 2.5 Vrms
Outputs:
Headset
Up to 6 channels @ 100 mW/channel max.
Impedance
4 - 600
Ω
Frequency Resp. 20 Hz - 20 kHz
Distortion
Less than 1% THD @ 75 mW/150
Ω
Lamps
2 bi-colored LED’s - On/Off and Pilot transmit
Pilot Isolate and Co-pilot transmit
4 red LED's on 4 and 6 position models -
ICS microphone activity for Pilot,
Co-pilot, and passengers 1 and 2
2 red LED's on 2 position models -
ICS microphone activity for Pilot
and Co-pilot
1.4.2 Physical
Specifications
Height
1.1”
(28
mm)
Length
5.7” (144 mm) behind panel
Width
3.3”
(83
mm)
Weight
0.58 lbs. (260 g)
Mounting
Panel mount, vertical or horizontal
End of section 1.0
