Northern Airborne Technology AA36-002 - Manual (Page 7)

SM42 Rev. 4.00 AA36-ECF Tie Line Adapter Manual
Section 1.0 Description
1.1 Introduction
This manual contains information on the AA36-ECF Tie Line Adapter. All derivatives
will be covered by manual supplements, which can be obtained from NAT as required.
Information in this section consists of purpose of equipment, features and specifications.
1.2 Purpose of Equipment
The AA36-ECF interfaces a NAT ICS tie line to non-bidirectional tie line intercom
systems.
1.3 Features
The AA36-ECF is a remote bulkhead mounted unit. The input signal level is adjustable
to allow correct NAT ICS tie output levels. An internal switch provides selection to
different tie line load impedances. Allowance is made for an external switch to disable
the input and output to provide the pilot with a mute PAX conference function.
1.4 Specifications
1.4.1 Electrical Specifications
Power Supply
Normal Operating Conditions: +28 Vdc @ 110 mA max.
Operating voltages:
Nominal +27.5 Vdc
Maximum +30.3 Vdc
Minimum +24.8Vdc
Emergency +20.0 Vdc
Input Signals
ICS input:
Signal Level 500 mVrms
Impedance 4200 Ω ± 10%
Adjust Trimpot 40 dB of range
Freq. response <3 dB from 350 Hz to 6000 Hz
Distortion <1% @ rated output
Dec 5, 2003 Page 1-1
ENG-FORM: 800-0107.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.