Electromagnetic interference self-checking system and use method thereof

Abstract

An electromagnetic interference self-checking system comprises a signal source, a line impedance stabilizer network (LISN), a coupling and decoupling network (CDN), an impedance stabilization network (ISN) and a receiver, wherein the signal source is used for providing a stabilization signal and is provided with a power supply port; the LISN comprises a power supply port and a radio frequency port and is used for extracting a signal of the power supply port of the LISN and outputting the signal from the radio frequency port of the LISN; the CDN comprises a signal port and a radio frequency port; the CDN is used for coupling a signal of the radio frequency port of the CDN to the signal port of the CDN, outputting the signal and enabling the impedance of a signal transmitting path to be matched; the ISN comprises a signal port and a radio frequency port and is used for extracting a signal of the signal port of the ISN and outputting the signal by the radio frequency port of the ISN; and the receiver is used for measuring the signal strength of each frequency point and reading a value. In addition, the invention provides a use method for an electromagnetic interference testing system.

Description

technical field [0001] The invention relates to an electromagnetic interference self-inspection system and its use method, in particular to an electromagnetic conduction interference self-inspection system and its use method. Background technique [0002] Electro Magnetic Interference (EMI) is generally divided into conducted interference and radiated interference. Conducted interference generally refers to the phenomenon that a signal on one telecommunication network is coupled to another telecommunication network through a conductive medium, thereby causing interference to another telecommunication network. . Common fixed telephone systems and network communication systems may be subject to electromagnetic conduction interference. In practical applications, these communication systems need to be frequently tested for electromagnetic conduction interference. [0003] Generally, the conductive medium of electromagnetic conduction interference connects the two telecommunicat...

AI Technical Summary

Problems solved by technology

However, the interface of the signal source currently on the market is a power port, and the interface of the ISN is a signal port, so it is impossible to use the ISN to form a self-test system

Therefore, the electromagnetic conduction interference self-inspection system is generally only suitable for the power port of the communication network, and there is still a lack of convenient electromagnetic conduction interference self-inspection system for the signal port of most communication networks

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