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综合布线行业技术的飞速发展,一定程度上归功于千兆位网络发展的巨大推动力。随着应用带宽的不断提高,布线市场中屏蔽与非屏蔽的问题又在老话重提,问题的主要症结在于屏蔽厂商认为随着数据传输速率的不断提高,外界干扰频率将随之增加,只有屏蔽系统才能有效抵御电磁干扰。在对待有电磁干扰的场合是否使用屏蔽或非屏蔽系统,其态度是非常严谨的。那么,什么是电磁干扰,国际上怎么评估呢? 简单地讲,电磁干扰(EMI)就是设备间无用的电磁作用。过大的电磁干扰会降低网络传输的可靠性,使误码率增加从而延长网络传输时间。电磁兼容性(EMC)是要求设备工作于电磁环境中时,不能对其他设备造成不良影响。在布线中既要考虑外界干扰不能过大,也要考虑布线系统不能过分干扰其他系统。国际上对电磁干扰的评估以欧洲89/336/EEC条例(EMC
The rapid development of cabling industry technology, thanks in part to the huge impetus for the development of Gigabit networks. With the continuous improvement of application bandwidth, the problem of shielding and non-shielding in the market of wiring revisits once again. The main problem of the problem is that the shielding manufacturers think that with the continuous increase of data transmission rate, the frequency of external interference will increase, and only the shielding The system can effectively resist electromagnetic interference. In the treatment of electromagnetic interference on the occasion of the use of shielded or unshielded system, the attitude is very strict. So, what is electromagnetic interference, how to assess the international? Simply speaking, electromagnetic interference (EMI) is the device between the useless electromagnetic effect. Excessive electromagnetic interference will reduce the reliability of network transmission, the error rate increased to extend network transmission time. Electromagnetic compatibility (EMC) is required when the device is working in the electromagnetic environment, can not adversely affect other devices. It is necessary to consider outside interference in the wiring can not be too large, but also consider the cabling system can not unduly interfere with other systems. The international assessment of electromagnetic interference is based on the European Regulation 89/336 / EEC (EMC