Northern Airborne Technology SM240, Installation And Operation Manual

Page 1: ...hner Road Kelowna BC Canada V1Y 4N7 Telephone 250 763 2232 Facsimile 250 762 3374 Issued on the authority of Northern Airborne Technology Ltd Copyright 2005 Installation and Operation Manual Model 240 Passenger Speaker Amplifier SM240 ISSUE 4 12 ...

Page 2: ...ontrolled 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 ISSUE REVISION RECORD Manual Issue Number Section Revision Number Revision Description Issue Date 4 12 Section 2 Rev 1 01 MOD D WED label change May 26 2010 4 11 Section 1 Rev 1 ...

Page 3: ...ications 1 3 1 4 3 Environmental Specifications 1 3 1 4 4 Product Approval 1 3 1 5 Unit Nomenclature 1 3 2 Installation 2 1 Introduction 2 1 2 2 Unpacking and Inspection 2 1 2 2 1 Warranty 2 1 2 3 Continued Airworthiness 2 1 2 4 Installation Procedures 2 1 2 4 1 Warnings 2 2 2 4 2 Cautions 2 2 2 4 3 Cabling and Wiring 2 2 2 4 4 Mounting 2 2 2 4 5 Mode Selection 2 3 2 4 6 Numerical Pin Identificati...

Page 4: ... Com PSC TV Briefer and Cabin Paging audio to the cabin speakers All inputs and operating modes are electronically switched Ground signals supplied by manual switches in the cockpit enable the electronic switches in the Model 240 The circuitry is arranged to provide Paging and Briefer audio priority the PA MIC or Briefer switch signals essentially open the Stereo Left Stereo Right ADF 1 ADF 2 PSC ...

Page 5: ... outputs Range and control same as Paging Volume specification Power Supply 28 Vdc 3A maximum Output Signals Left Right Speaker The Left and Right Speaker Amplifier output ratings are each 20 watts into 2 Ohms This is a peak rating intended for speech and music The continuous rating of the amplifier output is 2 watts into 2 Ohms for sine wave operation Power ratings are as follows Load Rated Power...

Page 6: ...val FAA TSO C50c RTCA DO 170 Class Ib 1 5 Unit Nomenclature Model 240 Derivative Part Number Descriptions The following is a tabulation of all Derivative Part Numbers available for the Model 240 Passenger Speaker Amplifier A Model 240 with an associated Derivative Part Number is designated as a Model 240 xxx where xxx is the applicable three digit Derivative Part Number Derivative Part No Descript...

Page 7: ...d from Northern Airborne Technology Ltd or its designated warranty repair center or any labour to remove or re install the defective unit in the aircraft Contact Northern Airborne Technology Ltd for any questions regarding this warranty its applicability to your units and or for return authorization Northern Airborne Technology Ltd is the final arbitrator concerning warranty administration Units w...

Page 8: ...iring Diagram in Section 2 7 as required Allow 3 from the end of the shielded wiring to the shield termination to allow the connector hood to be easily installed Maintain wire segregation and route wiring in accordance with the original aircraft manufacturers Maintenance Instructions Maintain wire segregation and route wiring in accordance with the original aircraft manufacturers Maintenance Instr...

Page 9: ...pectively P50 24 Low PA Key PSC TV and Stereo input audio circuits P50 25 Low Briefer Switch Connects Briefer input audio to PA Sidetone and Left and Right Speaker outputs Opens ADF PSC TV and Stereo input audio circuits P50 31 High No Smoking Chime tone to Left and Right Stereo outputs P50 32 High Seat Belt Chime tone to Left and Right Stereo outputs P50 33 Low Cabin Call Ringer tone to Left and ...

Page 10: ...the Model 240 until the following conditions are met Use the pin identification information in Section 2 4 5 above and the Installation Procedures Wiring Diagrams in the drawings section to check all the pins for the correct line voltages or continuity to ground 2 4 7 2 Post Installation Information The Right and Left Speaker Amplifier is designed for speech and music signals and has both a Rated ...

Page 11: ...ts consist of the following D25SMV IKC Quantity Description NAT Part 1 D min 25 Socket housing 20 21 025 25 MS Crimp Socket 20 26 901 1 25 pin JVL Hood Locklever 20 28 125 1 D min Cable Clamp 20 27 189 D37SMV IKC Quantity Description NAT Part No 1 D min 37 Socket Housing 20 21 037 37 MS Crimp Socket 20 26 901 1 37 Pin JVL Hood Locklever 20 28 005 1 D min Cable Clamp 20 27 189 2 7 Installation Draw...

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Page 15: ...ight loss of cooling Altitude 4 0 4 5 1 4 5 3 4 5 4 4 6 1 Category F2 55 C Operating Low Temperature 70 C Operating High Temperature No cooling required 70 000 feet Temperature Variation 5 0 Category B Humidity 6 0 Category A Operational Shocks and Crash Safety Operational Shocks Crash Safety 7 0 7 2 7 3 Operational and Crash shocks per DO 160B paragraphs 7 2 1 7 3 1 7 3 2 and 7 3 2 2 without shoc...

Page 16: ...Category A Lightning Induced Transient Susceptibility 22 0 Category L Remarks Model 240 xxx was qualified to the environmental test requirements of RTCA DO 160B by similarity to the Model 218 Amplifier and the Model 207 Amplifier Tests of DO 160B Sections 4 0 paragraphs 4 5 1 and 4 5 3 5 0 16 0 and 18 0 were conducted on the Model 218 Amplifier at dB Systems Inc in Redmond Washington Tests of DO 1...

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Page 18: ...t Belt and No Smoking sign time chimes a Cabin Call ringer tone ADF Pilot Select Com PSC TV Briefer and Cabin Paging Audio to the cabin speakers The Model 240 provides left right audio taken from an external stereo receiver music source to the cabin speakers The Model 240 is a remotely controlled electronic unit which operates upon command from switches and potentiometers in the cockpit or cabin o...