Patchkabel

Patchkabel

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A patch cable interconnect (engl. to patch -), and patch cords is a cable network technology and telecommunications. Patch Cables are pre-assembled.
The concept of patch cords, however, refers to any particular cable standards, but to variable, not fixed threaded conduit connections.
Patch cable or cord, there are both fiber and copper design. Other versions are, for example) Twinax (coax patch cable as for example InfiniBand can be used.
For copper patch cables, the cores consist of flexible copper cable, unlike permanently installed cables, which consist of solid wires. In waived fiber optic patch cables is a complex cable structure and generally more flexible Zipcord variants resorted back. The length of patch cords is usually about 0.3 to 25 m, longer lines are mostly used for fixed connections.
Copper patch cables can be wired either 1:1, which is also known as straight through, or crossed, among which the cross cable.

Patch cables are used for various network types, for example,
Ethernet networks, defined by the international standard TIA/EIA-568A/B
Structured cabling
Telephone distribution of telephone
Frequently encountered cable types are primarily twisted-pair cable, as well as coaxial cable and fiber optic cables.
In theory, patch cables for twisted pair copper applications can be relatively easy to construct. However, it should be noted that the quality and quality of a patch cord takes significant influence on the performance and quality of data transmission. Core diameter and quality of the meter plays a role just as the plug and the quality of the garment. Factors such as Power over Ethernet "and the related problems of this connector should not be ignored and it is advisable to use certified and thoroughly tested ready assembled patch cables.
If one patch cable for Ethernet in accordance with the 100BASE-TX standard here, it is next to the wrong Kabelgte (Cat 5 or better required), the twisting is a common error. If the twist with ISDN or 10BASE-T due to the relatively low signal frequencies almost no effect, then comes to her at 100 Mbps is essential.
Fast Ethernet uses balanced differential signals to minimize the input and electromagnetic radiation. Therefore, it is important which wire pairs are twisted together. It works like this: If the wires on a wire pair, a positive voltage, it is also clear from the other wire equal to a negative high voltage and the resulting electromagnetic fields are mutually reinforcing. In any case, therefore, are in 100BASE-TX, Pin 1 and 2, a twisted pair, the same applies for the pair on pins 3 a.m. to 6 p.m. (for 100BASE-T4 cabling are also pin) 4-5 and 7-8 twisted pair. Continue all the wires of a pair of wires should be exactly the same length, the twist may be on a short piece of cable (up to about 1.5 cm) missing or are removed.



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