Northern Airborne Technology NTA01-001 - Manual (Page 8)

NTA01-001 Motorola Series Radio Adapter Manual SM71 Rev. 4.10
1.4 Specifications
1.4.1 Electrical Specifications
Power Supply One switcher and one linear regulator with over-
voltage, over-current and thermal protection.
Operating Voltages:
Nominal
+27.5 Vdc
Maximum +30.3 Vdc
Minimum +22.0 Vdc
Emergency +18.0 Vdc
Current Consumption
NTA01-001 only 250 mA @ +28 Vdc
With radio 500 mA typical @ +28 Vdc Standby
2.75 A typical @ +28 Vdc transmitting at 10 W
Power Output to radio
+13 Vdc ±10% @ 5 A max. (20% duty cycle)
Internal Fuse
7 A
Breaker Current Rating 5 A
Input Signals
Mic Input from audio control panel:
Level 250 mVrms
Mic AC Input Impedance 150 Ω ±10%
Mic DC Input Impedance 470 Ω ±10%
Input Type Single ended
Speaker Input from radio:
Level
6.4 Vrms
Input Impedance 600 Ω ±10%
Input Type Balanced
Power On/Off:
Level <1 Vdc (logic low)
>3 Vdc (logic hi)
Page 1-2 Feb 6, 2006
ENG-FORM: 800-0108.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.