Audio international AI-DEQ-01 Bedienungsanleitung

7300 Industry Drive, North Little Rock, AR 72117

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

www.audiointl.com

Installation Manual

Model #: AI-DEQ-01

Digital Equalizer / Audio Processor

Document #540023

Audio International, Inc. AI-DEQ-01Installation

Document #540023, Rev. A, 4/2000 Page 2 of 10

Document Revision History

Rev. Level Date Description

IR 11/1997 Initial Release

A 4/2000 ECN # 4889

Reference Documents

Document # Drawing # Description

N/A 5215761 AI-DEQ-01 Outline Drawing

Service Bulletin List

Service

Bulletin # Subject Manual

Revision Revision

Date

Table of Illustrations

Illustration # Description Page #

1 Block Diagram – Typical Application 5

2 Reference Drawings 10

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. AI-DEQ-01Installation

Document #540023, Rev. A, 4/2000 Page 3 of 10

Table of Contents

Section Description Page

1.0 General Information ……………………………………………. 4

1.1 Introduction ……………………………………………………….. 4

1.2 Purpose of the Equipment ………………………………………. 4

1.3 Operational Features …………………………………………….. 4

1.4 Optional Equipment ……………………………………………… 4

2.0 Application ……………………………………………………….. 5

2.1 Introduction ……………………………………………………….. 5

2.2 Block Diagram –Typical Application …………………………… 5

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

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

3.2 Unpacking and Inspection ………………………………………. 6

3.3 Cautions & Warnings …………………………………………….. 6

3.4 Wiring Requirements …………………………………………….. 6

3.5 Physical Characteristics………………………………………….. 7

3.6 Electrical Characteristics…………………………………………. 8

3.7 Mating Connector Information ……………..……………………. 8

3.8 Pinout Assignment Descriptions ………………………………... 8

3.9 Post-Installation Test …………………………………………….. 8

4.0 Troubleshooting Guide………………………………………… 9

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

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

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

6.0 Reference Drawings ……………………………………………. 10

Audio International, Inc. AI-DEQ-01Installation

Document #540023, Rev. A, 4/2000 Page 4 of 10

MODEL # AI-DEQ-01

Digital Equalizer / Audio Processor

1.0 General Information

1.1 Introduction

This manual contains information for the proper installation of the Audio

International, Inc. (AI) Digital Equalizer / Audio Processor, Model Number

AI-DEQ-01. Included are physical and electrical characteristics and

additional references needed for operation of the unit.

1.2 Purpose of the Equipment

The AI-DEQ-01 is a professional digital equalizer / audio processor that

has an image “inhancer”for quality surround effect. The equalizer

provides the passengers the ability to select up to eight (8) programmed

music styles. The unit is built to rugged aircraft standards and is easily

incorporated into new or existing cabin audio systems.

1.3 Operational Features

Listed below are key features of the AI-DEQ-01:

Ten different band frequencies at one-octave intervals

Solid state circuitry

AI’s proprietary RS-485 Data Bus interface

Up to four units can be connected to the data bus

Lightweight, compact

Specially designed to meet aircraft standards

1.4 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. AI-DEQ-01Installation

Document #540023, Rev. A, 4/2000 Page 5 of 10

2.0 Application

2.1 Introduction

The purpose of the audio equalizer is to compensate for the frequencies

that might be absorbed by the aircraft interior. The equalizer adjustments

are most effective when made after the aircraft interior is thoroughly

furnished and all pieces of furniture are in place.

Also, the audio equalizer tunes to the preferred music style. Through

passenger controls, the AI-DEQ-01 will select the programmed music

style.

2.2 Block Diagram –Typical Application

3.0 Installation

3.1 Prior to Installation

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 AI-DEQ-01 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

7.0, Reference Drawings, for mounting hole diameters and

configuration.

Audio International, Inc. AI-DEQ-01Installation

Document #540023, Rev. A, 4/2000 Page 6 of 10

3.2 Unpacking and Inspection

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.

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.

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 module while power is applied.

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

may result and void any warranties.

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.

3.4.2 Power Wires

All power and ground wires shall be 22 AWG, minimum. Power

ground wires shall be grounded within twelve (12) inches of the

unit. All wires shall be in accordance with MIL-W-22759 or

equivalent. Protect power wires with circuit breakers or fuses

located close to the electrical power source bus.

Audio International, Inc. AI-DEQ-01Installation

Document #540023, Rev. A, 4/2000 Page 7 of 10

3.4.3 Audio Lines

All audio input cables shall be 22 AWG twisted shielded pair unless

otherwise specified. Audio output cables must be 18 AWG

minimum, 16 AWG preferred. All audio input and output lines

require twisted shielded cable with the cable shields grounded at

the source.

3.4.4 Data Bus Lines

The AI-DEQ-01 is designed to interface with other Audio

International 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.

The shield is to be connected everywhere a shield pin is provided.

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 RS-485 specification. All

equipment on the RS-485 data bus shall be connected in a “daisy-

chain”configuration.

AI’s proprietary RS-485 serial data bus specification is available

upon request.

3.5 Physical Characteristics

3.5.1 Refer to Section 6.0 for unit dimensions.

3.5.2 Refer to Section 7.0 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 6.0 for electrical specifications.

3.6.2 One 25-pin connector is located on the unit. This connector

provides +28 VDC power, audio connections, ground, data bus

signals, and ID strapping pins.

Audio International, Inc. AI-DEQ-01Installation

Document #540023, Rev. A, 4/2000 Page 8 of 10

3.4.5 Device ID Pins

Device ID pins (Pins 14 –17) are used to provide a unique address

on the RS-485 data bus. The ID pins will allow up to four modules

to be installed on the aircraft RS-485 data bus. Since the first ID

number is 0, device ID pin connections are not required when only

one unit is used. If more than one unit is configured on the data

bus, connect the respective device ID pins to ID common.

3.7 Mating Connector Information

All wiring harnesses to the unit are supplied and fabricated by the

installing agency. The unit utilizes a DBMA-25P unit connector, a

DBMA-25S mating connector, and a D20418-2 male screw lock.

3.8 Pinout Assignment Descriptions

Pin # Description

1 +28 VDC Power

2 Ground

3 R+ Audio Input

4 R- Audio Input

5 L+ Audio Input

6 L- Audio Input

7 R+ Audio Output

8 R- Audio Output

9 L+ Audio Output

10 L- Audio Output

11 Data Bus (A)

12 Data Bus (B)

13 Data Bus Shield

14 Unit ID 1

15 Unit ID 2

16 Unit ID 3

17 Unit ID Common

18 Reserved

19 Reserved

20 Reserved

21 Reserved

22 Reserved

23 Reserved

24 Reserved

25 Reserved

3.9 Post-Installation Test

Load the audio source with selected material. Any unit that relays audio

outputs through the unit may be used to test proper operation. With the

aircraft and audio power “ON”, apply power to the unit.

Verify that audio input is available to the system. Verify that the selected

material may be heard.

Audio International, Inc. AI-DEQ-01Installation

Document #540023, Rev. A, 4/2000 Page 9 of 10

4.0 Troubleshooting Guide

4.1 General Troubleshooting Procedures

Many problems can be isolated with the following general techniques:

• To verify power to the unit, recheck +28 VDC 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. Verify the problem still exists.

• Recheck all connections to the unit for security. Check all harness

runs for possible pinching. Recheck all pinouts for application

accuracy.

4.2 Troubleshooting Guide

Problem Possible Cause Solution

No sound in

speakers Power amplifier may not

be functioning or

improperly installed

Unit is improperly

installed.

No audio material in

source unit.

Verify +28 VDC power

and audio input is

present.

Verify +28 VDC power

and audio input is

present.

Insert audio material in

source unit.

Poor audio quality Audio controls are not

adjusted properly.

Improper shield

terminations.

Adjust audio controls.

Verify all shield

terminations.

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

Inc. product support.

Audio International, Inc. AI-DEQ-01Installation

Document #540023, Rev. A, 4/2000 Page 10 of 10

5.0 Specifications

Unit Specifications

Physical Specifications

Housing Aluminum

Dimensions

(L x W x H) 5.00”x 5.00”x 1.00”

12.70cm x 12.70cm x 2.54cm

Weight 0.53 lbs. / 0.24 kg

Electrical Specifications

Power 150 mA @ +28 VDC

Output Level Adjustments 0 through 50 dB

Frequency Bands 31, 62, 125, 250, 500, 1K, 2K, 4K, 8K, 16K

Data Bus Type AI Proprietary RS-485

6.0 Reference Drawings

The following diagrams show the unit dimensions and connector locations for the

AI-DEQ-01. All dimensions are shown in inches.

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