CAT6 Unshielded Cable

CAT6 refers to six types of network cables, including UTP, STP and SFTP.
STP is shielded twisted pair, UTP is unshielded twisted pair.SFTP is aluminum foil + woven double shielded twisted pair.
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CAT6 refers to six types of network cables, including UTP, STP and SFTP.

STP is shielded twisted pair, UTP is unshielded twisted pair.SFTP is aluminum foil + woven double shielded twisted pair.

UTP has no metal film, so it is less stable, but it has the advantage of being cheap.


The shielded Twisted Pair is divided into STP and FTP (Foil Twisted Pair). STP means that each wire has its own shielding layer, while FTP only works when the whole cable has shielding devices and both ends are properly grounded. Therefore, the whole system is required to be shielded devices, including cables, information points, crystal head and distribution frame, and the building needs to have a good grounding system. The shielding layer can reduce radiation, prevent information from being eavesdropped, and prevent the entry of external electromagnetic interference, so that the shielded twisted pair has a higher transmission rate than the similar non-shielded twisted pair.


The transmission frequency of this kind of cable is 1MHz ~ 250MHz, and the comprehensive attenuation crosswalk ratio (ps-acr) of the six cabling systems at 200MHz should have a large margin, which provides twice the bandwidth of the CAT5a. The transmission performance of CAT6 cable is much higher than CAT 5a, which is most suitable for the application of transmission rate higher than 1Gbps. An important difference between CAT6 and CAT5a is that the performance of crosstalk and return loss is improved. For the new generation of full-duplex high-speed network applications, excellent return loss performance is very important. The basic link model is eliminated in the CAT6 standards, and the wiring standard adopts star topology structure. The wiring distance required is: the length of permanent link cannot exceed 90m, and the length of channel cannot exceed 100m.


CAT6A: the transmission bandwidth of these products is between CAT6 and CAT7, the transmission frequency is 500MHz, the transmission speed is 10Gbps, and the standard outer diameter is 6mm. Like the seven categories of products, the country has not issued a formal testing standards, but the industry has such products, each manufacturer announced a test value.


Either way, the attenuation increases with the increase in frequency. When designing wiring, consideration should be given that the attenuated signal should have a large enough amplitude so that it can be detected correctly at the receiving end under the condition of noise interference. How much data a twisted pair can transmit at a high rate (Mb/s) also depends on how the digital signal is encoded.


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