Audio international VA-401-x Manuel utilisateur

7300 Industry Drive, North Little Rock, AR 72117

Phone: 501-955-2929 Fax: 501-955-2988

www.audiointl.com

Installation Manual

VA-401-x

Video Distribution Amplifier

Document # 540328

Audio International, Inc.

401

Installation Manual

Document # 540328 Rev. IR, 02/2007 Page 1of 12

Document Revision History

Rev. Level Date Description

IR 02/2007 Initial Release

Reference Documents

Drawing # Description

525705 VA-401-xOutline Drawing

Service Bulletin List

Service

Bulletin # Subject Manual

Revision Revision

Date

Table of Illustrations

Section # Description Page #

2.2 Block Diagram –Typical Application 4

6.0 Reference Drawings 11-12

PROPRIETARY NOTICE: Despite any other copyright notice, this document and information

disclosed herein contains confidential, proprietary designs owned by Audio International, Inc.

Neither this document nor the data contained herein shall be reproduced, used or disclosed to

anyone without the written authorization of Audio International, Inc.

Audio International, Inc.

401

Installation Manual

Document # 540328 Rev. IR, 02/2007 Page 2of 12

Table of Contents

Section Description Page

1.0 General Information …………………………………………….

1.1 Introduction ……………………………………………………….. 3

1.2 Purpose of the Equipment ………………………………………. 3

1.3 Optional Equipment ……………………………………………… 3

2.0 Application ………………………………………………………..

2.1 Introduction ……………………………………………………….. 4

2.2

Block Diagram –Typical Application…………………………….

3.0 Installation ……………………………………………………….. 5

3.1 Prior to Installation ……………………………………………….. 5

3.2 Unpacking and Inspection ………………………………………. 5

3.3 Cautions &Warnings ……………………………………………..

3.4 Wiring Requirements ……………………………………………..

3.5 Physical Characteristics…………………………………………..

3.6 Electrical Characteristics………………………………………….

3.7 Mating Connector Information ……………..…………………….

3.8 Pinout Assignment Descriptions ………………………………...

3.9 Post-Installation Test ……………………………………………..

4.0 Instructions for Continued Airworthiness………………….. 9

4.1 General Troubleshooting Procedures………………………….. 9

4.2 Troubleshooting Guide…………………………………………… 9

4.3 Scheduled Maintenance…………………………………………. 9

5.0 Specifications …………………………………………………… 10

6.0 Reference Drawings …………………………………………….

Audio International, Inc.

401

Installation Manual

Document # 540328 Rev. IR, 02/2007 Page 3of 12

VA-401-x

Video Distribution Amplifier

1.0 General Information

1.1 Introduction

This manual contains information for the proper installation and operation

of the Audio International, Inc. (AI) Video Distribution Amplifier, Model No.

VA-401-x. The “-x” suffix designates the type of connector utilized; “-1” =

Positronic and “-2” = D-Subminiature. Also included are physical and

electrical characteristics of the unit.

1.2 Purpose of the Equipment

Audio International’s VA-401-x provides four (4) buffered video outputs

from a single video input. The module can be configured to provide 75O

input impedance or high input impedance. The amplifier may be

cascaded for additional flexibility. The VA-401-x is an active device

requiring only power and ground connections. All composite video

standards (NTSC, PAL,SECAM,etc.) are compatible.

1.3 Optional Equipment

Audio International, Inc. offers a comprehensive family of cabin

accessories to enhance aircraft systems. As an industry leader in aircraft

cabin systems, Audio International, Inc. can offer the perfect combination

for the aircraft cabin.

Contact your AI representative for details.

Audio International, Inc.

401

Installation Manual

Document # 540328 Rev. IR, 02/2007 Page 4of 12

2.0 Application

2.1 Introduction

Five (5) BNC connectors on the rear of the unit allow for one (1) video

input and four (4) video outputs. This makes the unit ideal for driving

multiple monitors from one (1) video source. BNC1 is always designated

as video input. The remaining connectors are designated as video

outputs.

Input signal is provided via BNC-1.

Output signal is directed out BNC jacks 2-5.

2.2 Block Diagram –Typical Application

Audio International, Inc.

401

Installation Manual

Document # 540328 Rev. IR, 02/2007 Page 5of 12

3.0 Installation

3.1 Prior to Installation the following items should be considered:

3.1.1 During the design and layout of the aircraft cabin, careful

consideration of the location of this module is necessary. Some of

the items to be considered include:

•Space

•Available power supply

•Environmental conditions (temperature, humidity, etc.)

•Length of cable runs

3.1.2 The VA-401-x shall be installed to conform to the standards

designated by the customer, installing agency, and existing

conditions as to the unit location and type of installation.

3.1.3 Mounting screws are required to secure the unit. Refer to Section

6.0, Reference Drawings, for mounting hole diameters and

configuration.

3.1.4 For best results, locate the unit as close as possible to video

equipment.

3.2 Unpacking and Inspection

3.2.1 Carefully open the packaging and remove the unit. Verify that all

components have been included in the package per the packing

list. Inspect the unit for damage. Retain the packing materials and

packing list.

3.2.2 If damage has occurred during shipping, a claim must be filed with

AI within 24 hours and a Return Request Authorization Number

must be obtained from AI. Refer to the front cover of this manual

for address and telephone number of Audio International.

Repackage the unit in its original packaging materials and return it

to AI following instructions given by the AI representative. If no

return is necessary, retain the packing materials for storage or

reshipment if necessary.

Audio International, Inc.

401

Installation Manual

Document # 540328 Rev. IR, 02/2007 Page 6of 12

3.3 Cautions and Warnings

3.3.1 It is important to do a pin-to-pin power and ground check on all

connectors. Ensure that power and ground are applied only where

specified. Damage to the unit may result if power or ground is

applied to the wrong points.

3.3.2 DO NOT connect or disconnect the unit while power is applied.

3.3.3 DO NOT remove any factory-installed screws. Damage to the unit

may result and void any warranties.

3.3.4 DO NOT use this unit other than for its intended purpose. Doing so

might lead to electric shock, injury, or damage to the equipment.

3.3.5 DO NOT place unit near hot air ducts or other heat sources.

3.3.6 ESD (Electro Static Discharge) guidelines shall be followed.

3.4 Wiring Requirements

3.4.1 Introduction

The installing agency shall supply and fabricate all external cables

and mating connectors. The length and routing of external cables

must be carefully studied and planned before attempting installation

of the equipment. Allow adequate space for installation of cable

and connectors. Avoid sharp bends and placing cables near

aircraft control cables. Maintain a MINIMUM clearance of three (3)

inches from any control cable. If wiring is run parallel to

combustible fluid or oxygen lines, maintain a separation of six (6)

inches between the lines.

Audio International, Inc.

401

Installation Manual

Document # 540328 Rev. IR, 02/2007 Page 7of 12

3.4.2 Power Wires

Audio International recommends the chassis be electrically bonded

to the airframe structure by a conductive mounting point with <0.1

O resistance using <50 O impedance cable. Aluminum wool, nylon

webbing impregnated with aluminum oxide abrasive or fiber bristle

brushes are the approved tools for removing anodized surfaces at

mounting point where the bonding wire is attached. Power and

Ground wires shall be in accordance with MIL-W-22759. Protect

power wires with circuit breakers or fuses located close to the

electrical power source bus.

3.4.3 Video Lines

Composite video connections shall be shielded coaxial cable in

accordance with the military specifications of M17/94-RG179.

3.5 Physical Characteristics

3.5.1 Refer to Section 5.0 for unit dimensions.

3.5.2 Refer to Section 6.0 for attachment points.

3.5.3 When mounting the unit, allow sufficient space for mating

connectors.

3.6 Electrical Characteristics

3.6.1 Refer to Section 5.0 for electrical specifications.

3.6.2 The VA-401-x has five (5) BNC connector locations on the rear of

the unit. BNC1 will always be designated as video input. The

video output signal is directed out BNC jacks 2 through 5.

3.6.3 One (1) 9-pin D-subminiature connector is required for electrical

connections. Only pin 1 (Power Input) and pin 2 (Ground) are

connected; all others have no connection and are labeled reserved.

Audio International, Inc.

401

Installation Manual

Document # 540328 Rev. IR, 02/2007 Page 8of 12

3.6.4 Unit is shipped with 75Oinput termination jumper installed. For

applications that do not require termination, remove the four (4)

screws that hold the termination access panel. Remove the jumper

located behind the panel. Reinstall the panel with the four (4)

screws.

3.6.5 LEDs just left of connector P1 provide an indicator of video power.

The top row of LEDs indicates +5V video power operation. The

bottom row indicates -5V video power operation. When the VA-

401-x is operating normally, all LEDs should be illuminated.

3.7 Mating Connector Information

Model # Mating Connector

DEMA-9P Connector

DEMA-9S Mating Connector

P1 D20419-18 Male Screw Lock

BNC1 -BNC5 Amphenol 31-70008 or equivalent

3.8 Pinout Assignment Descriptions

Pin Configuration

VA-401-x BNC Description

Pin #

Description Pin # Description

1+28 VDC Power In BNC 1

Video Source Input

2Ground BNC 2

Video Source Output 1

3Reserved BNC 3

Video Source Output 2

4Reserved BNC 4

Video Source Output 3

5Reserved BNC 5

Video Source Output 4

6Reserved

7Reserved

8Reserved

9Reserved

3.9 Post-Installation Test

Verify +28 VDC power has been connected to the unit. Load the video

source equipment with selected material. With the aircraft and video

power “ON”, verify power to the VA-401-x unit. Verify selected material

may be viewed on the appropriate screen(s).

Audio International, Inc.

401

Installation Manual

Document # 540328 Rev. IR, 02/2007 Page 9of 12

4.0 Instructions for Continued Airworthiness

4.1 General Troubleshooting Procedures

Many problems can be isolated with the following general techniques:

•Recheck +28 VDC power is applied to the proper pins on the unit. Use

a voltmeter to verify correct level.

•Reset by removing power from the unit for at least one minute and

reapply power.

•Recheck all connections to the unit for security and all harness runs for

possible pinching. Recheck all pinouts for application accuracy.

4.2 Troubleshooting Guide

Should difficulties arise in the installation of the unit, contact Audio

International, Inc. product support for assistance.

4.3 Scheduled Maintenance

No scheduled maintenance is required to ensure continued airworthiness.

VA-401-x has no customer-serviceable parts. If the unit does not work

properly, it should be removed and replaced. Contact Audio International

for details.

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