Nat SM245 Скачать руководство пользователя страница 13

SM245 Rev. 4.10 

 Model 245 Speaker Amplifier Manual 

 

Section 2 Installation 

2.1  

Introduction    

Information in this section consists of unpacking and inspection procedures, installation 
procedures, post-installation checks, and installation drawings.  

2.2  

Unpacking and Inspection 

Unpack the equipment carefully and locate the warranty card.  Inspect the unit visually 
for damage due to shipping and report all such claims immediately to the carrier 
involved.  Note that each unit should have the following: 

 
- Model 245 Speaker Amplifier 
- Warranty Card 

 - Operator’s Manual 

- Release certification 
 

Verify that all items are present before proceeding and report any shortage immediately 
to your supplier. 
 

2.2.1  

Warranty 

Complete the warranty card information and send it to NAT when the installation is 
complete.  If you fail to complete the warranty card, the warranty will be activated on 
date of shipment from NAT. 
 

Note

:  An appropriately rated facility, e.g. Certified Aircraft Repair Station, must install 

this equipment in accordance with applicable regulations.  NAT Ltd’s warranty is 
not valid unless the equipment is installed by an authorized NAT Dealer.  Failure 
to follow any of the installation instructions, or installation by a non-certified 
individual or agency will void the warranty, and may result in a non-airworthy 
installation. 

2.3  

Installation Procedures 

2.3.1  

Warnings 

 

Do not bundle any lines from this unit with transmitter coax lines, or AM audio 
rectification may result.  Do not bundle any input or output audio, or DC power lines 
from this unit with 400 Hz synchro wiring or AC power lines.  Do not position this unit or 
wiring from this unit next to any device with a strong alternating magnetic field such as 
an inverter, or significant audio interference will result. 
 

Jun 

2

3, 2005

                                                                                                       

Page 2-1  

ENG-FORM: 805-0108.DOT 
 

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

 

Содержание SM245

Страница 1: ...Y LTD SM245 245 Speaker Amplifier INSTALLATION AND OPERATION MANUAL REV 4 10 June 23 2005 Northern Airborne Technology Ltd 1925 Kirschner Road Kelowna BC Canada V1Y 4N7 Telephone 250 763 2232 Facsimile 250 762 3374 Copyright 2005 by Northern Airborne Technology ...

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Страница 3: ...ONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD Northern Airborne Technology Ltd has acquired the assets of dB Systems Inc and has revised and reissued this manual in standard NAT format Northern Airborne Technology Ltd will be responsible for all future amendments and revisions ...

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Страница 5: ... 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 AMENDMENT RECORD Amendment Number Amendment Date Section s Changed Date Entered Entered By 1 Jul 19 06 2 Insert any Amendment Instruction sheets after this page Performed at factory ...

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Страница 7: ...e manual Amendment Instructions 1 Remove Pages Replace With Pages 2 3 to 2 4 Rev 4 10 2 3 to 2 4 Rev 4 10 Amendment 1 2 Remove Drawings Section 2 Replace or add Drawings Section 2 245 245 922 0 Rev 1 00 245 245 922 0 Rev 1 01 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 in...

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Страница 9: ...l Specifications 1 2 1 4 3 Environmental Specifications 1 2 1 5 Unit Nomenclature 1 2 2 Installation 2 1 Introduction 2 1 2 2 Unpacking and Inspection 2 1 2 2 1 Warranty 2 1 2 3 Installation Procedures 2 1 2 3 1 Warnings 2 1 2 3 2 Cautions 2 2 2 3 3 Cabling and Wiring 2 2 2 3 4 Mechanical Installation 2 2 2 3 5 Post Installation Checks 2 3 2 3 6 Log Entries 2 3 2 4 Continued Airworthiness 2 3 2 5 ...

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Страница 11: ...t replacement for the Collins model 356F 3 1 3 Features The Model 245 is rated at 18 watts into a 4 ohm load This is a peak rating intended for speech and music The continuous rating of the amplifier is 10 watts into 4 ohms sine wave For proper heat dissipation the unit should be mounted to a metal surface of at least 100 square inches 1 4 Specifications 1 4 1 Electrical Specifications Power Suppl...

Страница 12: ...F2 BA CL XXXXXXZ BZ AAATZ XXC2 XX Tested under environmental conditions and test procedures in accordance with RTCA DO 160C and qualified to the categories listed in the Environmental Qualification Form in Section 2 of this manual TSO Compliance TSO C50c RTCA DO 214 1 5 Unit Nomenclature Any derivatives of the Model 245 base unit are represented as Model 245 xxx where xxx represents the specific d...

Страница 13: ...the warranty will be activated on date of shipment from NAT Note An appropriately rated facility e g Certified Aircraft Repair Station must install this equipment in accordance with applicable regulations NAT Ltd s warranty is not valid unless the equipment is installed by an authorized NAT Dealer Failure to follow any of the installation instructions or installation by a non certified individual ...

Страница 14: ...ntification The following table specifies the functions of the connector pins PIN FUNCTION A SIGNAL INPUT B SIGNAL GROUND C SIGNAL INPUT D OUTPUT E OUTPUT F POWER GROUND G 28 VDC IN Connection to the unit should be made with twisted pair shielded cable The shield should be attached to the airframe at one end only Pins A B and C the input pins should be wired using 22 24 AWG wire The output pins D ...

Страница 15: ... the following a Check pin G for 28 Vdc relative to ground b Check pin F for continuity to ground less than 0 5 Ω power ground c Check inputs and outputs for correct orientation 2 3 5 2 Power On checks Install the Model 245 and power up the aircraft s systems Verify normal operation of all functions 2 3 6 Log Entries Upon satisfactory completion of all performance checks make the required log entr...

Страница 16: ...CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 2 6 Installation Drawings DRAWING REV DESCRIPTION TYPE Interconnect Speaker Amplifier Generic Interconnect 245 521 0 1 00 Speaker Amplifier Environmental Qual Form 245 245 922 0 1 01 Speaker Amplifier Mech Installation Section 2 ends after these Drawings ...

Страница 17: ...Interconnect ...

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Страница 23: ...le of driving a 4 ohm cockpit speaker It is intended to be a direct replacement for the Collins model 356F 3 3 3 Operation Specifics The Model 245 Speaker Amplifier has no operator accessible controls During installation or if the unit has been exchanged it may be a requirement to change internal adjustments This should be done ONLY BY FULLY QUALIFIED PERSONNEL End of section 3 Jun 23 2005 Page 3 ...

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