Analysis of Electromagnetic Radiation Characteristics of LED Display

Electromagnetic radiation characteristics of LED display The electromagnetic radiation is concentrated at 30MHz-400MHz. MEC theory and experiments have proved that the electromagnetic radiation of the display screen comes from the control card with high-speed IC, switching power supply, flat cable and related connectors.

The change of the main frequency has little to do with the distribution and size of the disturbance value: the content displayed on the led tv monitor display is closely related to the distribution and size of the disturbance value; the electromagnetic radiation inside the display cabinet is much greater than the electromagnetic radiation on the front of the display screen; the distribution of the disturbance value The size and length of the wires in the box have a lot to do with the installation position of the control card, the shape of the box and the opening.

Decai Optoelectronics EMC LED display product series, under the high requirements of European standard EMC, the wires and accessories used in each part of the product are all materials that have passed the relevant certification, ensuring the safety, reliability and stability of the product.

In the laboratory, we can see Tetra Optoelectronics EMC LED display test. During the test, a series of high-level tests such as conduction test, space radiation test, harmonic current test, electrostatic discharge test, radiation immunity test, and lightning surge were carried out. standard test. Especially in the difficult project of radiation testing, P20 products still have a margin of 6dB after passing the European standard EN55022 CLASS A.

P20mm EMC series can not only work normally in its own electromagnetic environment, but also will not cause unacceptable electromagnetic disturbance to anything in the environment. Compared with ordinary LED indoor screens, it is more environmentally friendly, safer, stable and reliable.