whepride.blogg.se - Twisted pair cable in hindi

If the two wires are parallel, then the electromagnetic interference from the devices such as motor can create a noise or interference on the wire that is closer to the source of noise.

The performance of the wire improves with the increase in the number of twist per foot.

Purpose of twisting the wire is to reduce the electrical interference from the similar pairs in surroundings.

Polyethylene, polyvinyl chloride, flour polymer resin and Teflon(r) are some of the substances that are used for insulation purposes.

These two wires are individually contained in a plastic insulation and are twisted together in a helical form.

It is possible to compare the twisted pairs according to their crosstalk, that is to say the loss of part of the energy of the signal due to the proximity of another circuit and its attenuation.Ī twisted pair consists of two copper wires about 1 mm thick.

Category 7 (for a bandwidth of 600 MHz).

Category 5e (Type R evolved to a 100 MHz bandwidth).

Category 5 (10BaseT, Token-Ring 16 Mbit/s and 100 Mbit/s TPDDI).

Category 4 (10BaseT and Token-Ring 16 Mbit / s).

Standardization in the field of cables is performed by the group ISO /IEC JTC1/ SC25/WG3 international and national organizations such as the TIA / EIA (Electronic Industries Association/Telecommunications Industries Association) in the United States. On even short distances, it is easily reached several hundred megabits per second.Ī distance of about 100 m allows to increase the throughput to several gigabits per second. Over shorter distances, can be obtained without difficulty speeds of several tens of megabits per second. If the length of the wire is small, a few hundred meters to several kilometers, speeds of several megabits per second can be achieved without unacceptable error rate. Metal cable are particularly suitable for the transmission of information on short distances. In other words, a shielded network must be very good, otherwise it may behave worse than an unshielded network, much cheaper. This requires that all land connection string is properly carried out and maintained. The disadvantage of the shield is however that it requires the grounding of the whole equipment, since the physical support to the terminal. We can say, simplifying, a shielded cable should be better able to immunize transported signals. Numerous debates take place about the advantages and disadvantages of the shielding of these cables.

In this case, a metal tape around the son.

The twisted pairs may be shielded, metal sheath surrounding completely metallic pairs or unshielded. This type of support is suitable for transmission both analog and digital. it consists of one or more pairs of electrical son arranged spiral. The pair of twisted is the simplest transmission medium.