Electronic Control Unit
AI-ECU-04-x
Product Description
The AI-ECU-04-x provides power and communication
interfaces for AI’s LCD touch screen monitors. The unit is a
remote unit that enables AI’s LCD touch screen devices to
communicate with each other as well as with other devices
connected to AI’s proprietary RS-485 serial data bus. Provided
with LVDS (Low Voltage Differential System) capabilities, the unit
acts as a high-speed interface for AI’s LCD touch screens.
The “-x” suffix in the model number denotes the type of
connector utilized.
Features
The following list provides an overview of features for the
AI-ECU-04-x unit:
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+28 VDC operation
DO-160C tested
AI-proprietary RS-485 serial data bus communication
interface
Composite NTSC video input
Standard finish gold “irridite” aluminum for maximum EMI
protection
Lightweight, compact
Solid state circuitry
3.
Application Notes
1.
2.
3.
4.
5.
Via internal software programming, a graphical user interface
is supplied to the associated LCD touch screen for user
control of various RS-485 serial data bus controlled devices.
The unit, which incorporates Low Voltage Differential System
capabilities, acts as a high-speed interface for AI’s LCD touch
screens.
The unit has NTSC composite video input connections as well
as RS-485 data bus outputs for use with externally connected
user interface control devices. Parallel port, keyboard, and
mouse interfaces are provided for configuration setup and
software updates. The unit also provides an RJ45 jack that
serves as a 10 Base-T connection for interface to an Ethernet
based network server.
This unit generates considerable heat. An internal fan is used
to exhaust heat from the unit. Proper ventilation for the unit
must be allowed for when specifying the installation location.
The closeout around the unit must have an opening of 2” front
and back and 4” on each side.
The AI-ECU-04-x is operated through “On-Screen” menus on
an LCD touch screen panel. These menus guide the user
through the various touch screen controls. “On-Screen”
menus are configured per customer specifications.
The unit incorporates removable brackets to allow for a
variety of installation options (plug-in, right or left armrest,
bulkhead, etc.)
Installation Guidelines
1.
2.
All power and ground wires shall be 22 AWG, MINIMUM.
Power ground wires shall be grounded within twelve inches of
the unit. All wires shall be in accordance with MIL-W-22759
or equivalent.
All composite video connections shall utilize RG-179 coaxial
cable or equivalent.
All shield connections must be
maintained through all production breaks.
4.
The unit is designed to interface with other AI equipment via
AI’s proprietary RS-485 serial data bus. The data bus is to be
implemented using a twisted shielded pair cable in
accordance with MIL-DTL-27500 or equivalent. The wire size
for the conductors in this cable is to be 22 AWG, MINIMUM.
Shield terminations are to be made as close to the connector
pin as possible. In the event shield pins are not provided, the
data bus shield must be terminated per AI’s proprietary
RS-485 specification.
The OPTIONAL (AOD only) 120 Base-T Ethernet connections
shall utilize standard shielded Ethernet cabling compatible
with aircraft environments. Each conductor shall be stranded
with an overall conductor gauge of 24 AWG (minimum).
Overall conductor diameter (including jacket) must be
evaluated to conform to mating connector requirements.
Twisted pair one must incorporate a lay length of 1.75 to
2 twists per inch. Twisted pair two must incorporate a lay
length of 1.08 to 1.33 twists per inch.
Technical Specifications
Electrical
Mechanical
Power
Video
Operating
Temperature
Dimensions
(l x w x h)
Weight
Drawings
522817 Rev IR
Level
IR
1.5A maximum @ +28 VDC
1 V p-p, 75-ohms (NTSC)
-15º C to +55º C
11.37" x 9.22" x 1.60"
28.88cm x 23.42cm x 4.06cm
2.83 lbs / 1.28 kg
Description
AI-ECU-04-x Outline Drawing
Document # 530401 – Revision History
Date
Description
8/2000
Initial Release
PROPRIETARY NOTICE
Despite any copyright notice, this data and information
disclosed herein contains confidential, proprietary designs owned
by Audio International Incorporated. Neither this data nor the data
contained herein shall be reproduced, used, or disclosed to
anyone without the written authorization of Audio International Inc.
Audio International, Inc. • 7300 Industry Drive, North Little Rock, AR 72117 • Phone 501-955-2929 / Fax 501-955-2988 / www.audiointl.com