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Experimental Performance Of FTP Cu Outdoor Cable

Shenzhen KW-LINK Electronic Co.,Ltd | Updated: Oct 16, 2017

The FTP cable is added one or two layers of aluminum foil on the outside of four pairs of twisted pair lines, using metal to the electromagnetic wave reflection, absorption and skin effect principle (so-called skin effect is the current in the conductor cross-section distribution with the increase in the frequency of the conductor surface distribution, the higher the frequency, the smaller the skin depth, that is, the higher the frequency, electromagnetic wave penetration ability weaker) , effectively prevent external electromagnetic interference into the cable, but also prevent internal signal radiation out, interference with other equipment work.FTP Cu Outdoor Cable

Experiments show that the frequency of more than 5mhz of electromagnetic waves can only be through 38μm thick aluminum foil. If the thickness of the shielding layer exceeds 38μm, for example, the two-layer 25μm-thick aluminum foil shield for the Nike-sen FTP cable makes it possible to penetrate the shielding layer into the internal electromagnetic interference frequency mainly below 5MHz. However, the principle of twisted pair can be effectively offset by low frequency interference under 5MHz.FTP Cu Outdoor Cable From the analysis of the index of coupling attenuation of cabling system, the ability of twisted cables to resist electromagnetic interference with various cable shielding methods is 20~30db. Among them: aluminum foil shield twisted pair cable (F/UTP) for 85db, screen/foil double shielded twisted pair cable (SF/UTP) for 90db, screen total shield/aluminum foil wire to shield twisted pair cable (S/FTP) for 95db.FTP Cu Outdoor Cable According to the relevant data, abroad has done aluminum foil shielding twisted-pair cable (F/UTP) BER test. If the shielding layer is not grounded or does not do a good grounding, under certain conditions will increase the network transmission of information to generate BER probability. The results will reach about 30%. According to the relevant data, abroad has done aluminum foil shielding twisted-pair cable (F/UTP) BER test. If the shielding layer is not grounded or does not do a good grounding, under certain conditions will increase the network transmission of information to generate BER probability. The results will reach about 30%.FTP Cu Outdoor Cable