Nat AA21-400, Installation And Operation Manual

Page 1: ...ANUAL REV 4 00 November 10 2003 Northern Airborne Technology Ltd 1925 Kirschner Road Kelowna BC Canada V1Y 4N7 Telephone 250 763 2232 Facsimile 250 762 3374 Copyright 2003 by Northern Airborne Technology The document reference is online please check the correspondence between the online documentation and the printed version ...

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Page 3: ...ese amendments should be carried out immediately upon receipt and recorded on the following amendment record AMENDMENT RECORD Amendment Number Amendment Date Section s Changed Date Entered Entered By 1 Jan 18 05 2 2 May 24 06 Pg iii 1 3 Apr 21 09 2 Insert any Amendment Instruction sheets after this page The document reference is online please check the correspondence between the online documentati...

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Page 5: ...Pages Replace With Pages 2 5 Rev 4 00 Amendment 1 2 5 Rev 4 00 Amendment 3 2 Remove Drawings Section 2 Replace or add Drawings Section 2 AA21 400 403 0 Rev 1 00 AA21 400 403 0 Rev 1 01 AA21 400 905 0 Rev 1 00 AA21 400 905 0 Rev 1 10 3 Update the Amendment Record sheet at the front of the manual 4 Insert this page into the manual after the Amendment Record sheet page ii Manual Amendment ends after ...

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Page 7: ...ed But Not Supplied to the table of contents Amendment Instructions 1 Remove Pages Replace With Pages Title Section Page iii Rev 4 00 Title Section Page iii Rev 4 00 Amendment 2 1 3 and 1 4 Rev 4 00 1 3 and 1 4 Rev 4 00 Amendment 2 2 Update the Amendment Record sheet at the front of the manual 3 Insert this page into the manual after the Amendment Record sheet page ii Manual Amendment ends after t...

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Page 9: ...nstructions 1 Remove Pages Replace With Pages 2 1 2 2 and 2 5 Rev 4 00 2 1 2 2 and 2 5 Rev 4 00 Amendment 1 2 Remove Drawings Documents Section 2 Replace or add Drawings Documents Section 2 AA21 400 521 0 Rev 1 20 Note Ensure that all drawings are inserted in the order shown on the latest drawing lists 3 Update the Amendment Record sheet at the front of the manual 4 Insert this page into the manua...

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Page 11: ...ation 2 1 Introduction 2 1 2 2 Unpacking and Inspection 2 1 2 3 Installation Procedures 2 1 2 3 1 Note to Installers 2 1 2 3 2 Warnings 2 1 2 3 3 Cautions 2 2 2 3 4 Cabling and Wiring 2 2 2 3 5 Post Installation Checks 2 2 2 3 6 Adjustments 2 4 2 4 Continued Airworthiness 2 5 2 5 Installation Drawings 2 5 3 0 Operation 3 1 Introduction 3 1 3 2 Operation Specifics 3 1 3 3 Techniques of Voice Transm...

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Page 13: ...ternal paging The AA21 400 also provides a low level audio signal output that drives the input on a remote mounted power amplifier The output is designed to drive the NAT PA110 220 or PA250 700 series amplifiers The AA21 400 provides generation of wail and yelp siren audio on the low level output when selected on the front panel A 3 dB function allows the output level of the system to be varied by...

Page 14: ...tion starts 130 mVrms Impedance 130 Ohm 10 Music Only one of Radio Receive or CD may be enabled at a time Radio Receive 2 5 Vrms into 1k Ω 10 CD 1 0 Vrms into 11k Ω 10 PA key Active low Max current source 15 mA 3dB key Active open isolated through optical relay Max current source 13 mA Reduces all audio except sidetone by 3 dB when grounded The output will be reduced 2 to 3 dB if operating above 2...

Page 15: ...ut 3 dB roll off from 350 Hz to 6 kHz Siren Only available on PA output 735 to 1620 Hz Yelp and wail modes with adjustable rates Siren level control provided for yelp wail by one internal trimpot Sidetone Adjustable 0 100 mW into 600 Ω with 10 THD Audio bandwidth 3 dB roll off from 350 Hz to 3 kHz Input to Output 50 dB from rated output Crosstalk Audio Noise Level 50 dB from rated output without s...

Page 16: ...ion finish Heat sinks de burred 6063 T6 aluminum with chromate conversion finish Connector Male filtered 25 pin D subminiature with Positronics V5 locking tabs 1 4 3 Environmental Specifications Operating Temp 30 C to 55 C Survival Temp 55 C to 85 C Humidity 95 Altitude 25 000 ft DO 160D Env Cat B4 BAB SBM UF XXXXXXZBABB TTX MXXXX TSO Compliance TSO C50c RTCA DO170 Class II Applicable to units Ser...

Page 17: ...et housing 20 21 025 25 MS Crimp Socket 20 26 901 1 25 Pin JVL Hood Locklever 20 29 250 AA21 400 IKS solder NAT Part D25SV IKS Quantity Description NAT Part 1 D min 25 Socket Solder Cup 20 20 025 1 25 pin JVL Hood Locklever 20 29 250 End of section 1 0 Nov 10 2003 Page 1 5 ENG FORM 800 0106 DOT Amendment 2 May 24 2006 CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD The document re...

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Page 19: ...hipment from NAT 2 3 Installation Procedures 2 3 1 Note to Installers The AA21 400 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 The AA21 400 is certified to RTCA DO 160D Section 20 RF Susceptibility Category T for installation in a ...

Page 20: ...ions to make the most compact and easily terminated interconnect Follow the wiring diagrams in Section 2 6 as required Allow 3 inches from the end of the wire to the shield termination to allow the hood to be easily installed Note that the hood is a clamshell hood and is installed after the wiring is complete All wiring should be at least 22 AWG except power and ground lines which should be at lea...

Page 21: ...using the front panel switch and remote Siren key as described in Section 3 4 4 1 The siren should sound on the external PA speakers and the level should be at maximum volume the VOL control fully cw If the siren rate needs adjustment use the corresponding trimpot on the top of the AA21 400 Refer to section 2 3 6 1 for details c Configure the audio system as required to allow connection of the pil...

Page 22: ... 48 cycles min to 300 cycles min and the wail rate is adjustable from 5 cycles min to 200 cycles min Rotating a pot cw will increase the sweep rate and ccw will decrease it 2 3 6 2 Level Adjustments The sidetone mic siren receive and internal speaker levels are all adjustable by rotating the appropriate pots cw to increase the level and ccw to decrease it The external speaker level is adjustable b...

Page 23: ...rms output level 2 4 Continued Airworthiness Maintenance of the AA21 400 is on condition only Periodic maintenance of this product is not required 2 5 Installation Drawings DRAWING REV DESCRIPTION TYPE SERIAL AA21 400 403 0 1 01 AA21 400 Cabin PA System Interconnect All AA21 400 405 0 1 00 AA21 400 Cabin PA System Connector Map All AA21 400 521 0 1 20 AA21 400 Cabin PA System Environmental Qual Fo...

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Page 29: ...ARY TO NORTHERNAIRBORNE TECHNOLOGY LTD DO 160D Section 4 0 4 5 1 4 5 2 4 5 3 4 6 1 5 0 6 0 7 0 7 2 7 3 8 0 9 0 10 0 Descriptionof Conducted Tests Equipmenttested to Category B4 30C Operating LowTemperature 55C Operating HighTemperature 70C Short termOperatingHighTemperature See Remark 2 Equipmenttested to Category B Equipmenttested to CategoryA Equipmenttested to Category B Test Procedure1 Alterna...

Page 30: ...0 23 0 24 0 25 0 Descriptionof ConductedTests Equipment identifiedas Category X no test required Equipment identifiedas Category X no test required Equipment identifiedas Category X no test required Equipment identifiedas Category X no test required Equipment is Class Z Equipmenttested to CategoryB Equipmenttested to CategoryA Equipmenttested to Category B Equipmenttested to Category B Equipmentte...

Page 31: ...2 AA21 401wastestedt055 000ft End of EnvironmentalQualification Form I 1Rev 1 20 Aug 10 2004 a g e 3 o f 31 ENG FORM 521 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERNAIRBORNE TECHNOLOGY LTD The document reference is online please check the correspondence between the online documentation and the printed version ...

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Page 39: ...ed signal is generated This signal is used to turn on the PA amp relay if connected in system The high current DC power to operate the PA110 220 or PA250 700 is supplied by the aircraft 3 3 Techniques of Voice Transmission To successfully project the human voice over long distances it is necessary to develop a microphone technique different from the usual conversational manner Place the microphone...

Page 40: ...yclic or hand mic switch and speak in a firm clear manner 3 4 2 2 Radio Operation To set the system for radio rebroadcast functions set the function switch on the AA21 400 to RADIO All audio delivered from the source typically pilot s or copilot s headset will be broadcast from the PA system or internal speaker 3 4 3 Volume Control Volume Control The volume control knob VOL on the front of the AA2...

Page 41: ...ectly to ground In this case the siren will sound as soon as either YELP or WAIL is selected Note Siren audio is only available when the INT EXT switch is selected to EXT See section 3 4 4 2 3 4 4 2 Internal External Mode Switch The INT EXT mode switch is a two position locking switch that routes the selected audio either to the internal 8Ω speaker INT or to the PA via an amplifier such as the NAT...

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Page 44: ...audio on the low level output when selected via the external user controls A 3 dB function allows the output level of the system to be varied by 3 dB When the input control line is grounded the output is reduced by approx 3 dB Removing the ground returns the system to full output Thermal protection is designed into the intermediate and final stage amplifiers to protect the unit during very hot or ...

Page 45: ...rred 6061 T6 aluminium with chromate conversion mounted along each side of unit Connectors Male filtered 25 pin D subminiature with Positronics V5 locking tabs Female filtered 25 pin D subminiature with Positronics V5 locking tabs Install Kits One D25SV IKC and one D25PV IKC See section 2 1 below 1 4 Environmental Specifications The AA21 401 is identical to the AA21 400 with the following exceptio...

Page 46: ...ect the appropriate revision of the drawing for the serial number of the unit under consideration The drawings specific to this derivative are listed below and can be found at the end of this supplement DOCUMENT REV DESCRIPTION TYPE SERIAL NO AA21 401 403 0 1 01 Remote Mount Cabin PA System Interconnect 1337 and up AA21 401 403 1 1 01 Remote Mount Cabin PA System Interconnect 1337 and up AA21 401 ...

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Page 64: ...21 400 Faceplate AA21 VOL PA ON POWER YELP WAIL OFF POWER ON OFF VOL AA21 PA YELP WAIL EXT STDBY STDBY EXT N N A A OFF OFF Figure 2 AA21 405 Faceplate Section 2 Installation 2 1 Installation Drawings Select the appropriate revision of the drawing for the serial number of the unit under consideration The drawings specific to this derivative are listed below and can be found at the end of this suppl...

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Page 67: ...WER YELP WAIL OFF POWER ON OFF VOL AA21 PA YELP WAIL EXT STDBY STDBY EXT N N A A OFF OFF 23 31 90 The document reference is online please check the correspondence between the online documentation and the printed version ...

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Page 70: ...djustable level is available Thermal and short circuit protection are provided for the internal speaker output electronics Wail or yelp siren is selectable on the front panel and activated by enabling the siren keyline Figure 1 AA21 400 Figure 2 AA21 406 1 1 Specification Changes The AA21 406 is identical to the AA21 400 with the following exceptions a The speaker output is replaced with a CABIN P...

Page 71: ...derivative are listed below and can be found at the end of this supplement 2 2 Installation Drawings DOCUMENT REV DESCRIPTION TYPE SERIAL NO AA21 406 403 0 1 00 PA Controller Interconnect 1498 and up AA21 406 405 0 1 00 PA Controller Connector Map 1498 and up AA21 406 905 0 1 00 PA Controller Faceplate Sht 1 of 2 1498 and up AA21 406 922 0 1 01 PA Controller Mechanical Installation 1498 and up Sec...

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Page 78: ...or are not installed and the unit is hardwired on e The faceplate backlighting is 5 Vdc NVIS Green A compliant Section 2 Installation For installation information and drawings see SM34 Section 2 Select the appropriate revision of the drawing for the serial number of the unit The drawings specific to this derivative are listed below and can be found at the end of this supplement 2 2 Installation Dr...

Page 79: ...ment Rev 1 01 ENG FORM 810 0111 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD Section 3 Operation For operation information see SM34 Section 3 Supplement ends The document reference is online please check the correspondence between the online documentation and the printed version ...

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Page 87: ... bat cover on the POWER switch is white instead of green 2 Installation For general Installation information and drawings see Service Manual SM34 Section 2 Select the appropriate revision of the drawing for the serial number of the unit The drawings specific to this derivative are listed below and can be found at the end of this supplement 2 1 Installation Drawings DOCUMENT REV DESCRIPTION TYPE AA...

Page 88: ...page intentionally left blank Page 2 SM Supplement Rev 1 01 ENG FORM 810 0109 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 23 31 90 The document reference is online please check the correspondence between the online documentation and the printed version ...

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Page 96: ...ead of 28 Vdc c All instances of signal name 28V LIGHTS are replaced with 5V LIGHTS Section 2 Installation For installation information and drawings see SM34 Section 2 Select the appropriate revision of the drawing for the serial number of the unit The drawings specific to this derivative are listed below and can be found at the end of this supplement 2 2 Installation Drawings DOCUMENT REV DESCRIP...

Page 97: ... Rev 1 02 ENG FORM 810 0111 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD Section 3 Operation For operation information see SM34 Section 3 Supplement ends 23 31 90 The document reference is online please check the correspondence between the online documentation and the printed version ...

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