Northern Airborne Technology MI34 - Manual (Page 9)

SM29 Rev. 4.00 MI34 Mobile Interface Manual
Nov 20, 2003 Page 1-1
ENG-FORM: 800-0105.DOT
PROPRIETARY AND CONFIDENTIAL TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Section 1.0 Description
1.1 Introduction
This manual contains information on the MI34 Mobile Interface.
Information in this section consists of purpose of equipment, features and specifications.
1.2 Purpose of Equipment
The MI34 is a bulkhead mounted interface unit specifically designed to allow NAT MT
series, Midland Syn-Tech I, or Midland Syn-Tech XTR mobile radios to be used in
aircraft audio systems.
1.3 Design Features
The MI34 provides internal microphone excitation, adjustable sidetone generation and a
floating output for the radio. It also provides a simple interconnect interface between
the radio and a Tac/Com control head
A fully floating, adjustable Receive Audio amplifier is included.
The MI34 is operational from either 14 or 28 VDC aircraft supply.
All interconnect and relay contacts are gold plated. The relay is sealed, high vibration
rated (50g shock) and dry nitrogen filled.
The circuit boards are constructed of G10-FR (flame retardant) material, with solder
masks, reflowed tin plating, and environmental post-coat.