Truck J1939 Multiplexer Cables were tested for radio frequency (RF) emissions. The emission levels found were significant. But, conventional suppression methods were able to provide adequate resolutions.
Application of appropriate electrical and electronic equipment EMC requirements are discussed. Methods for aircraft EMCtests and analysis are described. This guide does not address aircraft compatibility with the internal electromagnetic environments of portable electronic devices (PED) or with the external electromagnetic environments, such as high-intensity radiated fields (HIRF), lightning, and precipitation static. ...This guide provides detailed information, guidance, and methods for demonstrating electromagnetic compatibility (EMC) on civil aircraft. This guide addresses aircraft EMC compliance for safety and functional performance of installed electrical and electronic systems. ...This guide addresses aircraft EMC compliance for safety and functional performance of installed electrical and electronic systems. The EMC guidance considers conducted and radiated electromagnetic emissions and transients generated by the installed electrical and electronic systems which may affect other installed electrical and electronic systems on the aircraft.
When considered with individual equipments comprising the system and the electromagnetic operational environment in which the system will operate, the checklist will aid in the preparation of an EMC analysis. The analysis will facilitate the development of system-dependent EMC criteria and detailed system, subsystem, and equipment design requirements ensuring electromagnetic compatibility. ...It provides a ready reference of EMC management and documentation requirements for a particular program from preproposal thru acquisition.
DO-160G covers standard procedures and environmental test criteria for testing airborne electrical and electronic equipment (avionics). The tests specified in DO-160G are typically performed to meet Federal Aviation Administration (FAA) or other international regulations covering electrical or electronic equipment that is installed on commercial aircraft. ...The tests specified in DO-160G are typically performed to meet Federal Aviation Administration (FAA) or other international regulations covering electrical or electronic equipment that is installed on commercial aircraft. The tests and test levels/limits (also referred to as “Equipment Categories”) found in DO-160G are applicable to virtually every type of aircraft in use today, including small general aviation aircraft, business jets, helicopters, regional jets, and “Jumbo Jets” such as the newest airliners from Airbus (the A350XWB) and Boeing (the 747-8). ...The document includes 26 sections and three appendices, but it is Sections 15 through 23 and also Section 25 that cover Electromagnetic Compatibility (EMC). Examples of other tests covered in DO-160G are: temperature, altitude, vibration, sand/dust, power input, radio frequency susceptibility, lightning, and electrostatic discharge.
Electromagnetic compatibility (EMC) design considerations have a vital role in the proper functioning of the electronic circuits and systems of a modern off-highway vehicle (OHV). ...Incorporation of EMC in a system design gives that system the quality of reliability; that is, the system will have reduced emissions and be less susceptible to radiated and conducted electromagnetic energy. ...This paper provides ideas, concepts, and guidelines that the designer of OHV control circuitry can use for incorporation of EMC at the beginning of a design project.
It is important for electronic and hardware engineers to not only be knowledgeable of a product's intended function and performance, but also its ability to perform within electromagnetic compatibility (EMC) limits. This seminar introduces practical shielding theory, design fundamentals, and configurations, including shielding products, common and differential modes, electromagnetic fields, and enclosure shielding.
The European automotive EMC directive, 95/54/EC, provides the EMC approval regime for motor vehicles of 4 wheels or more and all equipment intended for fitment to them. ...The European automotive EMC directive, 95/54/EC, provides the EMC approval regime for motor vehicles of 4 wheels or more and all equipment intended for fitment to them. The EMC Chapter of the European multi-directive for 2/3 wheeled vehicles, 97/24/EC, provides the approval regime for these vehicles and their equipment. ...Regulation 10 of the United Nations Economic Commission for Europe (ECE) is being updated to provide similar EMC requirements. ISO draft standards are available for forestry and agricultural tractors, and for earth-moving machinery.
Laboratory test procedures incorporated the methods of RTCA DO-160D (test procedures for aviation electrical/electronic equipment) and DO-233 (test procedures for consumer portable electronic devices (PEDs)). ...Laboratory test procedures incorporated the methods of RTCA DO-160D (test procedures for aviation electrical/electronic equipment) and DO-233 (test procedures for consumer portable electronic devices (PEDs)). Only one commercially available system was evaluated per established operating frequencies.
The Motor Industry Research Association (MIRA), a Competent Body for 89/336/EEC certification, has developed an EMCtest strategy for off highway vehicles intended for the European market. This paper describes the background to the new legislation and the routes to compliance. ...From January 1st 1996, European Union law requires that all products placed on the market, containing electrical and/or electronic components, must satisfy the EMC requirements of Directive 89/336/EEC. Failure to comply may result in the withdrawal and prohibition of that product from the market.
There are no explicit qualification guidelines for electromagnetic compatibility (EMC) testing in an aircraft environment available and there is a lack of a detailed characterization of NFC equipped PEDs.
This AIR discusses the use and application of EMC antennas and antenna factors. The relationships between antenna gain, antenna factor, power density (W/m2), and field strength (V/m) are discussed. ...Illustrations of commercially available EMC antennas commonly used in performing EMI measurements are included. In addition to the illustrations, the antenna factors, frequency ranges, typical uses (applications), and the manufacturers of these antennas are also listed.
When considering the addition of radio frequency reception and transmission equipment to the suite of electronics already installed on a modern motor vehicle, numerous issues must be considered and tested to ensure reliable and safe operation not only of the additional equipment but the vehicle itself. ...This paper addresses some of the major issues and suggests modest design and testing practices that will accomplish the desired reliability and safety. The modest design and testing proposed addresses good engineering practices of electrically bonding metallic surfaces of the vehicle, grounding equipment, shielding signal cables, introducing filters, and appropriately separating cables into bundles. ...The modest design and testing proposed addresses good engineering practices of electrically bonding metallic surfaces of the vehicle, grounding equipment, shielding signal cables, introducing filters, and appropriately separating cables into bundles.
This SAE Surface Vehicle Electromagnetic Compatibility (EMC) Standards Manual provides a comprehensive compilation of the SAE documents pertaining to the measurement of electromagnetic characteristics of vehicles, motorboats, agricultural machinery, earthmoving machinery, and other internal-combustion- engine-driven equipment.