There are three types of cables used in wired transmission namely twisted pair cables, coaxial cables and fiber optic cables.
- TWISTED PAIR CABLES
· Twisted pair cables are used for transmitting data in small areas. These cables are further divided into two types. Shielded Twisted Pair (STP) and Unshielded Twisted Pair (UTP). RJ45 connector is used for connecting UTP cables. UTP is further divided into seven categories based on quality of cable. CAT1 cables are used in telephone lines with small data rate whereas CAT6 is used in LAN connections with high rate of data transfer.·
Coaxial cables carry signals with a frequency higher than that of twisted pair cables. These cables are categorized with the help of Radio Government (RG) ratings. RG-59 cables are used for cable TVs, RG-58 for thin Ethernet and RG-11 for thick Ethernet. BNC connectors are used for connecting coaxial cables.
- FIBER OPTIC CABLES
· Fiber Optic Cables are used for transmitting high speed, longer distance signals with minimum interference. Two types of connectors are used for connecting fiber optic cables. SC connector is used for connecting cable TVs whereas ST connectors are used for establishing connection between networking devices.
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