Northern Airborne Technology AMS43 TSO - Manual (Page 5)

AMS43 TSO Single Channel Audio Controller
SM27 Installation and Operation Manual
Section 1 Rev: 1.00 Issue 4 Page 1-2
ENG-FORM: 800-0116.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
1.4 Specifications
1.4.1 Electrical Specifications
Input Power 27.5 Vdc Nominal
0.50 A max
Lighting 27.5 Vdc @ 160 mA
Alert Power
27.5 Vdc Nominal
150 mA max
Input Signals
Quantity 13 receive channels
7 mic channels
1 ICS tie channel
2 direct channels
Audio level 2.5 Vrms for receiver inputs
0.25 Vrms for mic inputs
0.34 Vrms for ICS tie input
2.5 Vrms for direct audio inputs
Impedance 1 k
Ω ±10% for receive inputs
100
Ω ±10% for mic inputs
1.6 k
Ω ±10% for ICS tie input
1.3 k
Ω ±10% for Direct Audio1 input
100
Ω ±10% for Direct Audio 2 input
Circuitry Type All are single ended inputs
Coupling <-60 dB
Keylines Pilot & copilot transmit PTT
Rear hand mic transmit PTT
Pilot & copilot ICS PTT
3 Alerts - active low
Output Signals
Quantity 6 Headset outputs
6 Transmitter mic outputs
5 Transmitter keyline outputs
Rated level:
Headset 7.7 Vrms or 100 mW (20 dBm) into 600
Ω
Direct Audio1 10 mW (10 dBm) into 600
Ω
Direct Audio 2 0.1 mW (-10 dBm) 0.25 Vrms into 600
Ω
Alert 90 mVrms
±10% into 600 Ω
Impedance 20
Ω max
Circuitry Type Balanced output for high common mode noise rejection