EMC (Electro Magnetic Compatibility) refers to the ability of a device or system to operate in its electromagnetic environment and to produce unacceptable electromagnetic interference to any device in its environment. EMC design and EMC testing are complementary. The quality of EMC design is measured by EMC testing. Only in the whole process of EMC design and development of the product, EMC compatibility prediction and evaluation can detect the possible electromagnetic interference early and take necessary suppression and protection measures to ensure the electromagnetic compatibility of the system. Otherwise, when the product is finalized or the system is built and then found to be incompatible, it will cost a lot of manpower and material resources to modify the design or adopt remedial measures. However, it is often difficult to solve the problem completely, and it brings a lot of trouble to the use of the system. EMC testing includes test methods, measuring instruments and test sites. The test methods are based on various standards. The measuring instruments are based on the frequency domain. The test site is a prerequisite for EMC testing and an important factor in measuring EMC's working level. EMC testing is greatly affected by the site, especially for electromagnetic radiation emission, radiation receiving and radiation sensitivity testing. At present, the test sites commonly used at home and abroad are: open field, semi-anechoic darkroom, shielded room, reverberation room and transverse electromagnetic wave chamber.

There are two types of laboratories for EMC testing: one is a comprehensive design and testing laboratory, or testing center, that has been certified by the EMC authority and certified by the quality system and has statutory testing qualifications. It includes a shielded room for conducted interference, conduction sensitivity and electrostatic discharge sensitivity testing, a sound-damping shielded room for radiation sensitivity testing, an open field for radiation emission testing, and a full range of test and control equipment. . It takes millions or even tens of millions of yuan to build such a well-established laboratory. At present, several domestic companies have been built or are investing in construction.

The other type is an EMC laboratory with certain test functions based on the actual needs and funding of the unit. Such test laboratories are small in scale and low in cost compared to large integrated laboratories. Primarily for pre-compliance testing and EMC evaluation. That is, in order to make the product have self-test and evaluation means before final EMC certification. If there are deficiencies, we can also make full use of social achievements, internal and external cooperation, mutual comparison and exchange, in order to achieve cost savings, improve design, and continuously improve the electromagnetic compatibility of products.

In terms of test instruments, the automatic detection system with the spectrum analyzer as the core can provide EMC parameters quickly and accurately. The new EMC scanner combines with a spectrum analyzer to visualize electromagnetic radiation. It can perform all-dimensional three-dimensional testing on individual components of the system, PCB board, complete machine and cable, etc., showing the true electromagnetic radiation status.

The EMC test ( electromagnetic compatibility test equipment ) must be carried out in accordance with the test methods given in the EMC standards and specifications, and the limits specified in the standard are used as criteria. For pre-compliance testing, although it is not possible to guarantee that the product passes the standard test of all projects, at least the majority of electromagnetic interference can be eliminated, thereby increasing the credibility of the product. And can point out how you can improve your design and suppress EMI emissions.

Electromagnetic compatibility test standards mainly include: civilian products gb17626 series; military products GJB151A/GJB152A.

The civil product test project has electric fast transient pulse group immunity test, surge (impact) immunity test, voltage dip, short-term interruption and voltage change immunity test, electrostatic discharge immunity test, radio frequency electromagnetic field Radiated immunity test, transmitted to voltage and radiation field strength. Military products have CE101, CE102, CS106, CS114, CS116, RE102 and so on. Moreover, various industries have electromagnetic compatibility standards for various industries, and different standard test items are different. Of course, test requirements and test arrangements are different. Although the military and civilian product testing projects are different, the testing principles are basically the same. It includes two parts: electromagnetic interference and electromagnetic sensitivity. The electromagnetic interference test measures the magnitude of the electromagnetic wave signal generated by the device under test and emitted outward to reflect the interference with surrounding electronic devices. The electromagnetic sensitivity test is the ability to measure the immunity of the device under test to electromagnetic disturbances. Electromagnetic interference mainly includes radiated emissions and conducted emissions.

Due to the huge investment required to build an electromagnetic compatibility test laboratory, the current large-scale electromagnetic compatibility test laboratories in China mainly include: 203 Institute of China Aerospace Science and Industry Group, Suzhou Institute of Electrical Apparatus, Suzhou Electric Apparatus Research Institute Co., Ltd. The measurement control equipment and system laboratory and the four (the military/civilian qualifications are available), Guangzhou Guangzhou five (the military/civilian qualifications have), China Shipbuilding Electromagnetic Compatibility Testing Center (junior/civilian qualifications) The electromagnetic compatibility testing laboratory of the automotive industry is mainly the Changchun FAW Electromagnetic Compatibility Testing Center.

Shanghai Haiyue Electronic Technology Co., Ltd. was established in 2006. Since its establishment, the company has been focusing on the R&D, production and sales of safety and electromagnetic compatibility test equipment. The company's main personnel have nearly 20 years of experience and rich practical experience. It has successfully provided a number of large-scale certification laboratories with the planning of test equipment and the supply of corresponding test equipment. The company produces hundreds of various types of safety equipment and test instruments, and undertakes non-standard custom test equipment.

The company has always adhered to the rigorous attitude, adhering to the "integrity as the cornerstone, providing professional technical services, perfect solutions, high-quality testing equipment" concept, constantly improve after-sales service, improve product quality, and strive to become the industry leader By.

The company also sells a number of well-known safety equipment manufacturers at home and abroad, including: US COMPWEST, Italy ATS, US ED&D, Taiwan Whale, Japan SOKEN, Japan KIKUSUI, Japan YOGOGAWA, Taiwan Epps, Japan SOKEN, Japan ESPEC and many more.

The company provides complete EMI and EMS equipment in the field of electromagnetic compatibility. The agent supply includes European EM-TEST, Italian AFJ, German FRANKONIA, Swiss EMC-PARTNER, Japan MORITA and many other manufacturers. At the same time, the company is also the sales outlet of Beijing Kehuan in East China. .

It is our goal to improve the customer's test equipment, improve the customer's test level and increase customer satisfaction. We believe that Haiyue Club is your best partner with high quality testing equipment and professional technical services!