Cat 5, also known as ethernet or category 5 cables, are twisted pair cables that are used as an industry standard for network and telephony wiring. Recently superseded by category 5e cables, they are unshielded wires containing (commonly) four pairs of gauge twisted copper wires that are terminated in RJ-four5 or 8P8C connectors. The internal wiring in cat 5 cables are twisted to help promote noise rejection and, when a new connection is added, it is recommended that only 12.7 millimeters of cabling is untwisted to make the connection.
Internally, a cat 5 cable is made up of at least four pairs of cables designated with a standardized color scheme, with one cable being a solid color and its pair being white with a stripe of that color. The colors used are orange, blue, green and brown. Category 5 cables are not limited to four pairs of cables and can, in actual fact, contain one hundred pairs in backbone applications. The internal wiring of category 5 cables need to be twisted by precise amounts per meter to reduce crosstalk between pairs of cables.
Before cat 5 cables was category 3 cables, which had a maximum data transfer rate of ten megabits per second. Category 5 is able to transfer data at over one hundred megabits per second though there are some limiting features of cat 5 cable. At lengths of over one hundred meters, cat 5 cables experience high signal loss and therefore the maximum length for fixed applications should be ninety meters, with five meters of cable each end for patching to the equipment or socket. It is possible to install a repeater that will boost signal power and therefore increase the possible length of cable.
There is a common misconception that the connectors terminating cat 5 cables are RJ-four5 connectors. While this is not strictly false, 8P8C connectors are also used to terminate cat 5 cables and the difference between the two cables is hard to spot by looking at them. All certified cat 5 cables will have printed information on the cable explaining the type of cable and the connectors used.
With regards to cat 5 cables with four pairs of internal wires, used in telephony and computer network data transfer, there are three types of cat 5 cable wiring. These types of wiring are straight cable (used to link a PC with a switch of some sort), crossover (used to link two computers together), and roll-over (used to link a PC with a router).
Internally, a cat 5 cable is made up of at least four pairs of cables designated with a standardized color scheme, with one cable being a solid color and its pair being white with a stripe of that color. The colors used are orange, blue, green and brown. Category 5 cables are not limited to four pairs of cables and can, in actual fact, contain one hundred pairs in backbone applications. The internal wiring of category 5 cables need to be twisted by precise amounts per meter to reduce crosstalk between pairs of cables.
Before cat 5 cables was category 3 cables, which had a maximum data transfer rate of ten megabits per second. Category 5 is able to transfer data at over one hundred megabits per second though there are some limiting features of cat 5 cable. At lengths of over one hundred meters, cat 5 cables experience high signal loss and therefore the maximum length for fixed applications should be ninety meters, with five meters of cable each end for patching to the equipment or socket. It is possible to install a repeater that will boost signal power and therefore increase the possible length of cable.
There is a common misconception that the connectors terminating cat 5 cables are RJ-four5 connectors. While this is not strictly false, 8P8C connectors are also used to terminate cat 5 cables and the difference between the two cables is hard to spot by looking at them. All certified cat 5 cables will have printed information on the cable explaining the type of cable and the connectors used.
With regards to cat 5 cables with four pairs of internal wires, used in telephony and computer network data transfer, there are three types of cat 5 cable wiring. These types of wiring are straight cable (used to link a PC with a switch of some sort), crossover (used to link two computers together), and roll-over (used to link a PC with a router).
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