This SAE Standard contains test limit1 and procedures for the measurement of radio disturbances in the frequency range of 150 kHz to 1000 MHz. The document applies to any electronic/electrical component intended for use in vehicles. Refer to International Telecommunications Union (ITU) Publications for details of frequency allocations. The test limits are intended to provide protection for receivers installed in a vehicle from disturbances produced by components/modules in the same vehicle.2
The receiver types to be protected are: broadcast radio and TV3, land-mobile radio, radio telephone, amateur and citizens' radio.
The limits in this document are recommended and subject to modification as agreed between the vehicle manufacturer and the component supplier. This document shall also be applied by manufacturers and suppliers of components and equipment which are to be added and connected to the vehicle harness or to an on-board power connector after delivery of the vehicle.
This document does not include protection of electronic control systems from RF emissions, or from transient or pulse type voltage fluctuations. These subjects are covered in other sections of SAE J551 and in SAE J1113.
The World Administrative Radiocommunications Conference (WARC) lower frequency limit in region 1 was reduced to 148.5 kHz in 1979. For vehicular purposes, tests at 150 kHz are considered adequate. For the purpose of this document, test frequency ranges have been generalized to cover radio services in various parts of the world. Protection of radio reception at adjacent frequencies can be expected in most cases.
The Electromagnetic Compatibility (EMC) Standards Committee reports to the Electrical Systems Group of the Motor Vehicle Council. The Committee is responsible for developing and maintaining SAE Standards, Recommended Practices, and Information Reports related to all aspects of EMC as it applies to surface vehicles and their components regardless of propulsion method or electrical system voltage. Phenomena addressed include radio frequency emissions, radio frequency immunity, electrostatic discharge (ESD) immunity, and transient voltage emission and immunity. The Electromagnetic Immunity (EMI) Task Force and Electromagnetic Radiation (EMR) Task Force have been developed under the committee's scope. Participants in the Electromagnetic Compatibility (EMC) Standards Committee include OEMs, suppliers, consulting firms, government, and other interested parties.
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Test Limits and Methods of Measurement of Radio Disturbance Characteristics of Vehicles and Devices, Broadband and Narrowband, 150 kHz to 1000 MHz
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Test Limits and Methods of Measurement of Radio Disturbance Characteristics of Vehicles and Devices, Broadband and Narrowband, 150 kHz to 1000 MHz
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