With the widespread use of automotive electronics, the problem of electromagnetic compatibility between electronic products has become more and more serious, directly related to the normal driving and safety performance of vehicles. In order to ensure the electromagnetic compatibility of automotive electronic products, the electromagnetic compatibility certification business for automotive electronic products has been extensively and thoroughly studied in various countries and regions around the world.
In the United States, Japan, the European Union and other countries and regions, the electromagnetic compatibility requirements of automotive electronic products have been incorporated into the certification management system.
Take the European market as an example. Vehicles or automotive electronics that currently enter the 1:3 European market must pass the ECE regulations and EU directives. The content of radio interference suppression is an important part of the ECE automobile technical regulation structure system. The RIO part of the ECE regulations is the unified regulation on electromagnetic compatibility in vehicle approval. Among the EU directives, Directive 72/245/EC also specifies electromagnetic compatibility requirements.
The main testing items and standards for automotive electronics include: radiated and conducted emissions (CISPR 25); conducted transient emissions (ISO 7637-2); radiated immunity, conducted immunity (ISO 11452 series); Discharge immunity (ISO 10605); conducted transient immunity (ISO 7637 series standard). Foreign countries also have strict requirements for automotive electronics testing laboratories. If they want to become the contract testing laboratory of the three major automobile brands in the United States, they must pass the strict A2LA/AEMCLRP certification. At present, although relevant foreign laboratories have passed the certification, Chinese local laboratories currently have few capabilities to pass AEMCLRP certification.

In-vehicle electronic test standard 

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