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Table of Contents
Related Manuals for Nat 246
Summary of Contents for Nat 246
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Page 1: Installation And Operation Manual
Installation and Operation Manual Model 246 Isolation Amplifier SM246 ISSUE 2.00 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 1996... - Page 2 Model 246 Isolation Amplifier SM246 Installation and Operation Manual 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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Page 4: Table Of Contents
Model 246 Isolation Amplifier SM246 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 1.4.3 Product Approval Installation Introduction Unpacking and Inspection 2.2.1... -
Page 5: Description
The Model 246 Isolation Amplifier is an electronic device capable of driving 100 mWrms into a 600 Ohm load. It is intended as a direct replacement for the Collins model 356C-4. The Model 246 is also capable of driving 5 Wrms into an 8 Ohm load. -
Page 6: Environmental Specifications
Environmental Specifications Temperature -55°C to +70°C Altitude 70,000 ft Qualification of the Model 246 Isolation Amplifier was completed in accordance with RTCA/DO-160C Environmental Categories: [A2F2]-BA[CL]XXXXXXZ[BZ]AAATZ[XXC2]XX Note: Refer to Environmental Qualification Form located in Section 2 of this Manual for complete details of the environmental categories. -
Page 7: 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 8: Cautions
Model 246 Isolation Amplifier SM246 Installation and Operation Manual 2.4.2 Cautions CAUTION: In all installations, use shielded cable exactly as shown, and ground only as indicated. Significant problems may result from not following these guidelines. Failure to follow the installation and wiring instructions provided in this manual for power and ground connections, including the rating of the circuit breaker, may lead to damage in the power input circuitry of the unit. -
Page 9: Beech/King Air Interphone Interconnect
Model 246 Isolation Amplifier SM246 Installation and Operation Manual 2.4.5 Beech/King Air Interphone Interconnect Section 2 Rev: 1.00 Issue 2 Page 2-3 ENG-FORM: 805-0115.DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD. -
Page 10: Typical Collins Interconnect
Model 246 Isolation Amplifier SM246 Installation and Operation Manual 2.4.6 Typical Collins Interconnect Section 2 Rev: 1.00 Issue 2 Page 2-4 ENG-FORM: 805-0115.DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD. -
Page 11: Post Installation Checks
2.5.1 Mechanical Installation The Model 246 may be mounted and operated in any position; however, access to the gain adjustment should be considered. The amplifier chassis must be electrically bonded to the airframe. The finish on the chassis is electrically conductive and need not be removed for electrical bonding. If the Model 246 will be driving more than approximately 2 Watts into a load, it is recommended that the unit be mounted on a metal surface of no less than 100 square inches. -
Page 12: Accessories Required But Not Supplied
Access to the jumper is by cover removal. Refer to Assembly drawing 246-1 in the SM246 Maintenance manual. To remove the Model 246 cover, remove the 4 screws in the sides of the unit (do not remove screws under the base of the unit). Lift the cover to remove. Reinstall the cover by following the same steps in reverse order. - Page 13 This page intentionally left blank...
- Page 16 REMARKS Tests of DO-160C, Sections 6.0, 7.0 and 8.0 were conducted at Northern Airborne Technology Ltd. (NAT) in Kelowna, BC on Model 246. Tests of DO-160C, Sections 16.0 and 18.0 were conducted at dB Systems, Inc. in Redmond, WA on Model 246.
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Page 17: Operation
The Model 246 Isolation Amplifier is an electronic device capable of driving 100 mWrms into a 600 Ohm load. It is intended as a direct replacement for the Collins model 356C-4. The Model 246 is also capable of driving 5 Watts RMS into an 8 Ohm load.