Specifications
65
Transmission
Transmission Technology
Coaxial cable
Coaxial cables are asymmetrically constructed, high-frequency cables.
They comprise a signal-carrying inner conductor, a shield and a cable sheath.
Coaxial cable can be used anywhere, where high-frequency signals are to be
transmitted or where signal interference must be eliminated.
Twisted Pair cable
Twisted pair cabling is a type of wiring in which two conductors of a single
circuit are twisted together for the purposes of canceling out electromagnetic
interference (EMI) from external sources; for instance, electromagnetic
radiation from unshielded twisted pair (UTP) cables, and crosstalk between
neighboring pairs
In contrast to FTP (foiled twisted pair) and STP (shielded twisted pair) cabling,
UTP (unshielded twisted pair) cable is not surrounded by any shielding. It is
the primary wire type for telephone usage and is very common for computer
networking, especially as patch cables or temporary network connections due
to the high exibility of the cables.
Fibre optic cable
Fibre optic cables can be made of bre glass or plastic. They offer extremely
high data transfer rates, which can amount to several billion bits / sec.
This impressive data transmission capacity is made possible by the modulation
of different wavelengths of light. Optical bres are immune to electromagnetic
interference and have extremely low attenuation values.