What is EMC Testing for Automotive? What are the different standards for automotive EMC Testing?
Editorial Team - EMC Directory
EMC testing for automotive electronics is necessary to ensure that the electronic systems in vehicles operate correctly and safely without causing any interference with other systems or external sources of electromagnetic radiation. Automotive electronics can be exposed to various electromagnetic fields from sources such as radio transmitters, power lines, and other electronic devices. These electromagnetic fields can interfere with the operation of electronic systems and cause malfunctions or safety hazards.
Automotive systems can generate EMI in two forms: narrowband emissions and broadband emissions, also called "arc and spark." Broadband EMI is caused by arc and spark components, such as ignition and pulse-type systems and electric motors, while narrowband EMI is generated by other active electronics in the vehicle. Interruptions in the transmission of data and instructions caused by either form of EMI can negatively impact system function, particularly in systems that control the vehicle like braking or engine controls, which can result in serious consequences. Therefore, it is crucial to establish and adhere to automotive EMC standards and conduct appropriate testing to ensure proper function and safety.
The development of EMC standards for the automotive industry is primarily carried out by CISPR, ISO, and SAE. CISPR and ISO are responsible for creating and upholding global standards, while SAE focuses on standards for North America. Previously, SAE developed numerous EMC standards which were later presented to CISPR and ISO for possible recognition as an international standard. As these SAE standards became globally recognized, the corresponding SAE standard was retired as a comprehensive standard and used only to highlight deviations from the international standard.
Automotive EMC standards are established by various organizations to ensure that electronic systems in vehicles are compatible with each other and do not interfere with each other's operation. Some of the key standards that are used for testing and compliance include:
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