3Com Stereo System AA12S Series Compact Audio Controller User Manual

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AA12S Series Compact Audio Controller Manual SM69 Rev. 4.00
1.3 Specifications
1.3.1 Electrical Specifications
Power Supply
Input voltage 11-30 Vdc operating. Linear regulator with
reverse and over voltage protection.
Internal supply 11 Vdc
Nominal Lighting Voltage 27.5 Vdc @ 200 mA max (AA12S-001)
13.5 Vdc @ 400 mA max (AA12S-004)
Nom. Operating Voltages 27.5 Vdc @ 600 mA max
(one input for both) 13.8 Vdc @ 600 mA max
Maximum Operating 30.3 Vdc
Minimum Operating 11.0 Vdc
Note: The AA12S is not designed to operate under emergency electrical system
conditions for 14 Vdc operation.
Input Signals
Mic:
Quantity 4 (Pilot, Copilot, 2 Passengers)
Rated level 250 mVrms nominal (125 to 500 mVrms)
Impedance 150 Ohm ±10 %
Circuitry type unbalanced
TX Keyline:
Quantity 2 (Pilot, Copilot)
Rated level ground activates keyline, <20 mA source current
ICS Keyline:
Quantity 4 (Pilot, Copilot, 2 Passengers)
Rated level ground activates keyline, <1 mA source current
Receive Audio:
Quantity 7 (3 COM, 4 NAV)
Rated level 2.5 Vrms nominal (1.3 to 5.0 Vrms)
Impedance 1 kOhm ±10 % (1 to 3 kOhm for sidetone)
Circuitry type unbalanced
Music Inputs:
Quantity 2 (left channel, right channel)
Rated level 1.4 Vrms nominal (850 mVrms to 2.4 Vrms)
Impedance 11 kOhm ±10 %
Circuitry type unbalanced
Page 1-2 Oct 13, 2005
ENG-FORM: 800-0107.DOT Amendment # 1 Oct 14, 2005
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

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