Northern Airborne Technology AA12S-600 - Manual (Page 6)

AA12S-600 Compact Stereo Audio Controller
SM84 Installation and Operation Manual
Section 1 Rev: 1.01
Issue 1 Page 1-3
ENG-FORM: 800-0115.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Input Signals
Note:
All nominal values are listed with a ±10% tolerance.
Microphones
Quantity 6
Rated Level
250 mVrms nominal
Impedance 150 Ω nominal
Circuit Type Single ended
Mic Bias 12.0 Vdc
Receive Audio
Quantity 9
Rated Level
2.5 Vrms nominal
Impedance 1.0 k Ω nominal
Circuit Type Single ended
Emergency Receive Audio
Quantity 1
Rated Level
2.5 Vrms nominal
Impedance 1.1 k Ω nominal 1
Circuit Type Single ended
Direct Audio
Quantity 4
Rated Level
2.5 Vrms nominal
Impedance 1.0 k Ω nominal
Circuit Type Single ended
Direct Audio (Emergency Mode Operation)
Quantity 1 (DIR 1)
Rated Level 2.5 Vrms nominal
Impedance 1.0 k Ω nominal 1
Circuit Type Single ended
Music
Quantity 2
Rated Level
0.4 Vrms nominal
Impedance 10.0 k Ω nominal
Circuit Type Single ended
1 Assumes mono or stereo headphones of rated impedance attached to CREW 1 headphones output.