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Summary of Contents for Nat AA20 Series
- Page 1 Installation and Operation Manual AA20 Series PA/Siren System SM33-1 ISSUE 4.01 Northern Airborne Technology Ltd. 1925 Kirschner Road Kelowna, BC, Canada. V1Y 4N7 Telephone (250) 763-2232 Facsimile (250) 762-3374 Issued on the authority of Northern Airborne Technology Ltd. Copyright 2008...
- Page 2 SM33-1 Installation and Operation Manual IMPORTANT INFORMATION This manual has been produced to provide information unique to the AA20 Series PA/Siren System. Some of this information has been published previously in the SM02 Service manual (AA20/22/23, PA110/220 Series Loudhailer/PA Systems).
- Page 3 AA20 Series PA/Siren System SM33-1 Installation and Operation Manual Prepared By: Checked By: Approved By: The status of this installation and operation manual is controlled by issue shown on the title page. The status of each section is controlled by revision shown in the footer of each page. All revisions affecting sections of this manual have been incorporated into the latest issue.
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Page 4: Table Of Contents
AA20 Series PA/Siren System SM33-1 Installation and Operation Manual Table of Contents Section Title Page Description Introduction Product Description Design Features Specifications 1.4.1 Electrical Specifications 1.4.2 Physical Specifications 1.4.3 Environmental Specifications Unit Nomenclature Installation Introduction Unpacking and Inspection 2.2.1 Warranty... -
Page 5: Description
Information in this section consists of product description, design features and specifications for the AA20 Series PA/Siren System. All derivative product information shall be contained in the applicable manual supplement, which may be obtained from NAT as required. Review all notes, warnings and cautions. -
Page 6: Physical Specifications
AA20 Series PA/Siren System SM33-1 Installation and Operation Manual Power Key External switched +28 Vdc @ 250 mA max. available to activate remote PA110/220 amplifiers Key Logic Ground-seeking inputs for all lines 1.4.2 Physical Specifications Height 1.12" (28.4 mm) max. - Page 7 AA20 Series PA/Siren System SM33-1 Installation and Operation Manual AA20-430 3 tone chime, adjustable rate/tone Mode select: PA/Tape 25 W output into 8 Ω PA override at all times Seatbelt chime interlock Sidetone output, chime with PA key Section 1 ends Section 1 Rev: 1.00...
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Page 8: Installation
NAT dealer, to be free of defects in workmanship or performance. This warranty covers all materials and labour, but is exclusive of any transport to deliver the defective unit to and from NAT or its designated warranty repair center, or any labour to remove or re-install the defective unit in the aircraft. -
Page 9: Installation Procedures
AA20 Series PA/Siren System SM33-1 Installation and Operation Manual Installation Procedures 2.4.1 Warnings WARNING: The AA20 is a high power device, capable of producing tones at very high volume levels. Ensure that all personnel are well clear of the aircraft prior to keying the siren or PA. Failure to adhere to this warning could cause injury to personnel and/or damage to equipment. -
Page 10: Post-Installation Checks
AA20 Series PA/Siren System SM33-1 Installation and Operation Manual 2.4.4 Post Installation Checks 2.4.4.1 Voltage/Resistance Checks Do not attach the AA20 until the following conditions are met. Check the following for all models of AA20: a) Check P101, pins 1 and 2 for +28 Vdc relative to ground. -
Page 11: Adjustments And Connections
It is not intended to cover all variations of the AA20 Series audio controllers. Drawing packages for specific AA20 units can be requested from NAT by contacting the Product Support Department. - Page 12 AA20 Series PA/Siren System SM33-1 Installation and Operation Manual DOCUMENT REV. DESCRIPTION TYPE AA20-030 AA20\030\302-20-030A 1.00 PA/Siren System Block Diagram AA20\030\403-0 1.01 PA/Siren System Interconnect AA20\030\405-0 1.02 PA/Siren System Connector Map AA20\030\905-0 1.10 PA/Siren System Faceplate AA20\030\922-0 1.01 PA/Siren System...
- Page 24 Confidential and Proprietary to NAT...
- Page 25 Confidential and Proprietary to NAT...
- Page 26 Confidential and Proprietary to NAT...
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Page 27: Operation
SM33-1 Installation and Operation Manual Section 3 Operation Introduction Information in this section consists of functional and operational procedures for the AA20 Series PA/Siren System. General Information The AA20 PA/Siren System provides a central adjustment for internal and/or external aircraft paging functions. - Page 28 AA20 Series PA/Siren System SM33-1 Installation and Operation Manual 3.3.2.1 AA20-030 On the AA20-030, the function switch selects between PA and Radio Operation. PA Operation For external PA/Siren systems or internal paging functions, set the function switch on the AA20-030 to PA.
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Page 29: Volume Control
AA20 Series PA/Siren System SM33-1 Installation and Operation Manual 3.3.3 Volume Control The volume level is set by the VOL pot on the front of the AA20. For external paging and rebroadcast operations, the volume should always be set between half and full level. The setting for internal paging must be determined by experiment to provide the desired coverage in the passenger area and to prevent feedback.
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