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Nat AA20-431 Installation And Operation Manual

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INSTALLATION AND OPERATION MANUAL
Copyright 2004 by Northern Airborne Technology
These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification
Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.
AA20-431
Cabin PA System
REV 4.11 February 17, 2011
Wulfsberg Electronics
6400 Wilkinson Drive
Prescott, AZ 86301
Telephone (928) 708-1550
CONFIDENTIAL AND PROPRIETARY TO WULFSBERG.
SM22

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  • Page 1 SM22 AA20-431 Cabin PA System INSTALLATION AND OPERATION MANUAL REV 4.11 February 17, 2011 Wulfsberg Electronics 6400 Wilkinson Drive Prescott, AZ 86301 Telephone (928) 708-1550 Copyright 2004 by Northern Airborne Technology CONFIDENTIAL AND PROPRIETARY TO WULFSBERG. These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification...
  • Page 2 SM22 Rev. 4.11 AA20-431 Cabin PA System Manual Prepared By: Checked By: Certification: Approved By: Periodically Wulfsberg will release manual amendments. In order to maintain the most accurate and up to date manual these amendments should be carried out immediately upon receipt and recorded on the following amendment record.
  • Page 3 INSTALL_OPS MANUAL AMENDMENT Manual: SM22 (AA20-431) Amendment #: 1 Document # SM22\Install_Ops\809-0001 Amendment Date: Jan 18, 2005 The purpose of this amendment is to add the Environmental Qualification Form (521-0) to section 2.6 and to update section 2.3.5 Cable and Wiring statement paragraph 1.
  • Page 4 INSTALL_OPS MANUAL AMENDMENT Manual: SM22 (AA20-431) Amendment #: 2 Document # SM22\Install_Ops\809-0002 Amendment Date: Feb 17, 2009 The purpose of this amendment is to add the latest documents and drawings to the manual. Amendment Instructions: Remove Pages Replace With Pages 2-1 and 2-2 Rev 4.10 Amendment #1...

  • Page 5: Table Of Contents

    SM22 Rev. 4.10 AA20-431 Cabin PA System Manual Table of Contents Section Title Page Description Introduction Purpose of Equipment Features Specifications 1.4.1 Electrical Specifications 1.4.2 Physical Specifications 1.4.3 Environmental Specifications Installation Introduction Unpacking and Inspection 2.2.1 Warranty Installation Procedures 2.3.1 Note to Installers 2.3.2...

  • Page 6: Introduction

    The system also provides eight 150  headset outputs for use in operational environments where it is not practical to use the speaker output. The AA20-431 PA controller provides central adjustment for all the PA and music audio to the passengers. Automatic chime before announcements and soft music muting are standard features.

  • Page 7: Specifications

    AA20-431 Cabin PA System Manual SM22 Rev. 4.11 Specifications 1.4.1 Electrical Specifications Input Power: 22 to 30 Vdc, 280 mA idle (2 A max.) Lamp Power: +28 Vdc, 80 mA Inputs: Music: Two tape inputs, left & right channel mixed internally Tape audio levels: 1.0 Vrms @ 1 kHz (Input impedance 8.6 k)

  • Page 8: Physical Specifications

    SM22 Rev. 4.11 AA20-431 Cabin PA System Manual Signal to noise ratio – 65 dB 25 W into 8  @ <10% THD Speaker: 20 W into 8  continuous power with single tone 35 W max @ 26.6% THD into 8 ohms with 1 Vrms into music input and music and speaker trim pots fully clockwise.

  • Page 9: Environmental Specifications

    AA20-431 Cabin PA System Manual SM22 Rev. 4.11 1.4.3 Environmental Specifications Operating Temperature: -30 C to +55 C Survival Temperature: -55 C to +85 C Altitude: 35,000 ft Humidity: >95% at +50 C Vibration/Shock: DO-160C, Cat. M, N TSO Compliance:...

  • Page 10: Installation

    2.3.1 Note to Installers The AA20-431 is intended for use as a cockpit-mounted control for an internal or external aircraft PA system, where such a system is not installed to fulfill the airworthiness requirements for the aircraft or an operating rule.

  • Page 11: Warnings

    If the speaker load drops to less than 5  the speaker output will toggle between ‘full’ and ‘no’ power. Returning the load to 8  will return the AA20-431 to full power. If the unit exceeds the high operating temperature limit, the output power will be reduced by 50%.

  • Page 12: Fuses And Breakers

    SM22 Rev. 4.11 AA20-431 Cabin PA System Manual secured, and that it shares no path with any electrically noisy aircraft accessories such as blowers, turn and bank instruments or similar loads. 2.3.6 Fuses and Breakers Power to this unit must be supplied from a separate 3A breaker or 3A fast blow fuse.

  • Page 13: Post Installation Checks

    2.3.8.2 Power On Checks Install the AA20-431 and connect a music source to the system. Power up the ship's systems and turn on all required radios and accessories. Set the AA20-431 SPKR switch to PA. Music should be heard in the headsets but not over the speaker.

  • Page 14: Accessories Required But Not Supplied

    Airworthiness Limitations Maintenance of the AA20-431 is ‘on condition’ only. Periodic maintenance of this product is not required. The Airworthiness Limitations section is FAA approved and specifies inspections and other maintenance required under 14 CFR §§ 43.16 and 91.403, unless an alternative program has been FAA approved.
  • Page 15 AA20-431 Cabin PA System Manual SM22 Rev. 4.11 Section 2.0 ends after these Drawings Page 2-6 February 17, 2011 Amendment #2 ENG-FORM: 805-0106.DOT These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification CONFIDENTIAL AND PROPRIETARY TO WULFSBERG.
  • Page 16 These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.
  • Page 17 These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.
  • Page 18 These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.
  • Page 19 These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.
  • Page 20 These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.
  • Page 21 These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.
  • Page 22 These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.
  • Page 23 These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.
  • Page 24 These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.
  • Page 25 These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.
  • Page 26 These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.
  • Page 27 These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.

  • Page 28: Introduction

    Information in this section consists of the functional and operational procedures for the AA20-431 Cabin PA System. General The AA20-431 Cabin PA provides central adjustment for all the PA and music audio to the passengers. Automatic chime before announcements and soft music muting are standard features.

  • Page 29: Chimes

    PTT switch. After the chime (see section 3.4), speak clearly and deliberately into the microphone. Chimes The integrated chime capabilities of the AA20-431 provide advisory tones for typical cabin/passenger applications. 3.4.1 No Smoking When the ‘No Smoking’...

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