Northern Airborne Technology AA12S - Manual (Page 5)

AA12S Series Compact Audio Controller
SM12S Installation and Operation Manual
Section 1 Rev: 1.00 Issue 4 Page 1-2
ENG-FORM: 800-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
1.4 Specifications
1.4.1 Electrical Specifications
Power Supply
Linear regulator with reverse and over-voltage protection.
Input Voltage 11 – 30 Vdc operating range
30.3 Vdc (maximum)
13.8 Vdc or 27.5 Vdc @ 600 mA (nominal, one input for both)
11.0 Vdc (minimum)
Lighting Voltage
AA12S-001 27.5 Vdc @ 200 mA max.
AA12S-004 13.5 Vdc @ 400 mA max.
Note: The AA12S is not designed to operate under emergency electrical system conditions for 14 Vdc
operation.
Input Signals
Microphone
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