Audio International, Inc. MSM2921-0x-x Installation
Document #540186, Rev. IR, 2/2000
Page 4 of 11
MODEL # MSM2921-0x-x
Discrete to RS485 Converter Module
1.0
General Information
1.1
Introduction
This manual contains information for the proper installation of the Audio
International, Inc. (AI) Discrete to RS485 Converter Module,
Model No: MSM2921-0x-x. The “-0x” in the model number designates the
internal firmware configuration of the unit. The “-x” in the model number
designates the type of connector utilized in installation. Also included are
physical and electrical characteristics of the unit.
1.2
Purpose of the Equipment
The MSM2921-0x-x provides the necessary medium to convert analog
serial communications to a discrete output via AI’s proprietary RS485
serial communication format and vice versa for means of providing an
interface to AI’s proprietary RS485 digital data bus.
Strapping pins are provided to enable the unit to address internal firmware
that will allow the operator and/or installation agency to use multiple
MSM2921-0x-x units on the same AI proprietary RS485 digital data bus.
1.3
Operational Features
Listed below are key features of the MSM2921-0x-x:
q
12 independent discrete switch inputs
q
12 independent discrete status outputs
q
Software configurable per aircraft requirements
q
Compact, lightweight
q
Lightweight aluminum construction
1.4
Optional Equipment
Audio International, Inc. offers a comprehensive family of Cabin Control
Modules. These modules provide convenient solutions for a variety of
frequently encountered interfacing needs or special requirements and are
an important part of AI’s “building block” system for configuring total cabin
management.
Contact your AI representative for details.
