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Radiation disturbance is a component of EMI testing, mainly aimed at assessing whether the spatial radiation generated by EUT will affect other objects. During operation, EUT may emit radiation through space due to the operation of CUP or motor, which may affect the operation of other objects or the human body. Therefore, a radiation disturbance test is required. The necessary equipment includes: testing site - anechoic chamber, receiver, antenna, coaxial cable, turntable, and testing table. Ordinary products are divided into three categories: O...
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Radiated immunity, also known as radiation sensitivity, is one of the most basic EMS testing items. It refers to the ability of various devices, equipment, or systems to resist radiation in the presence of radiation. The higher the sensitivity, the lower the anti-interference ability. The most important components for testing anti-interference instruments are the signal generator, power amplifier, and transmitting antenna. IEC 61000-4-3/GB T 17626.3: Radio frequency electromagnetic field radiation immunity test The radio frequency electromagnetic f...
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Conducted interference is a component of EMI testing, which tests the interference signals generated by EUT during operation. These signals can affect the normal operation of other devices through power or signal lines. To conduct a conducted interference test, the necessary equipment includes a testing site - shielded room, receiver, coaxial cable, etc LISN， There are currently two LISNs in the laboratory. LISN8127 is mainly used for single EUT testing, while LISN8128 is mainly used for testing EUT with 3-phase power supply. Ordinary products are ...
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EMC testing is divided into electromagnetic interference (EMI) and electromagnetic sensitivity, namely anti-interference EMS. Electrostatic discharge immunity is a testing item in EMS, because when an object with static electricity is discharged, it will generate a discharge current, which will produce a brief and strong electromagnetic field. The brief discharge current and corresponding electromagnetic field generated during discharge may cause faults or even damage to the circuits of electrical and electronic equipment. The purpose of electrostatic di...
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The parts that can be touched during product operation may cause personal injury if the temperature is too high; Moreover, excessively high temperatures inside the equipment can also affect product performance, even leading to a decrease in insulation level or an increase in mechanical instability of the product. Therefore, in the product design process, temperature rise testing is an important step that needs to be considered to ensure the safe and stable operation of the product! The methods of measuring temperature rise can be divided into two cate...
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This test is usually used to simulate the free fall that a product may experience during transportation, and to examine the product's ability to withstand unexpected impacts. Usually, the height of a drop is based on the weight of the product and the probability of falling, and the surface of the drop should be a smooth, hard, and rigid surface made of concrete or steel. For different international standards, even products of the same weight may have different drop heights. For handheld products (such as mobile phones, MP3 players, etc.), most dro...
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