Cabling – Definitions
Application- A program running on a computer.
Unshielded Twisted-Pair- A pair of copper wires twisted together with no shielding. 3.
Fiber-Optic Cable- Cable with one or more glass fibers that uses light to transfer data. 4.
Dark Fiber- A fiber that is not carrying light. Used when extra fiber capacity is installed. 5.
Coaxial Cable- Twisted-Pair cabling. It’s called coaxial because it has a single conductor surrounded by insulation and then a layer of shielding. 6.
Plenum- Air space between walls, floors, drop ceilings used for circulating air in a building. 7.
Riser- A space for indoor cables that allow cables to pass between floors, normally a vertical shaft or space. 8.
Rip Cord- String built into fiber-optic cable that is used to split the outer jacket of the cable 9.
Core- The central part of a fiber optic cable that the light transmitted on. 10.
Attenuation- A term that indicates a decrease in power from one point to another. 11.
Noise- A signal that interferes with the desired signal passing thru the cable. 12.
Headroom- The number of db that a system exceeds the minimum defined requirements. 13.
ANSI- The primary organization for developing technology standards in the U.S. 14.
NFPA- A U.S organization with international membership, to establish and update fire protection and prevention safeguards. 15.
FCC- A government agency that regulates interstate and international communications 16.
NIST- A Technology Administration that sets standards as needed by industry or government programs. 17.
OSHA- A government agency that makes and enforces rules to provide safe and healthy work environment. 18.
Equipment Room- A space set aside for telecommunications equipment that serves the occupants of the building or multiple buildings in a campus environment. 19.
Topology- The physical configuration that describes a local communications network, most common topologies is bus, ring and star.
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