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access point
specific place on a facility that allows access to a cable or pipe for the purpose of applying an active signal
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amplifier
an electronic device that boosts the strength of a cable signal; amplifiers can add noise or distortion to cable signals
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bridging amplifier
an electronic device that converts low-powered trunk line signals into high-powered feeder line signals; bridging amplifiers are enclosed in aerial cases or in aboveground peds
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bridging amplifier case
a casing that encloses and protects a bridging amplifier installed on an aerial cable line
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bridging amplifier ped
an aboveground enclosure that houses a bridging amplifier
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broadband
digital systems and equipment that provide consumers voice services, high speed data services, video on demand services, and interactive delivery services.
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cable distribution system
the second part of the cable system, used to transport cable signals to streets and easements.
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cable service system
third part of cable system that is used to transport cable signals to industrial, commercial, and residential buildings.
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cable transmission system
the first part of the cable system that is used to transport cable signals over great distances before they are distributed to customers.
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cascade
series of amplifiers in a distribution system in which the output of one amplifier feeds into the input of another amplifier; cascades maintain signal strength throughout the distribution system
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center conductor
the inner core of a coaxial cable that consists of a solid copper, copper clad steel, or copper clad aluminum wire.
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coaxial cable
a type of cable, which is the most common means for transmitting signals, that consists of a center conductor surrounded by an insulating material and an outer conductor.
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common ground
an electrical ground used by more that one facility.
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dielectric
the insulation material, which is typically polyethylene, that separates the center conductor and the shield of a coaxial cable
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directional coupler
a passive device, which is contained in a bridging amplifier, that transfers energy from trunk lines to feeder lines by means of induction
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downstream
the direction of signals through the cable system from the headend to customers
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feeder line
coaxial and fiver optic cable used in the distribution system that runs from bridging amplifiers to line extenders and subscriber taps in peds
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fiber loop
an extra length of fiber optic cable that is looped on aerial cable lines and near fiber nodes; provide easy access to fiber optic lines and make splicing lines easier.
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fiber node
the point at which fiber optic trunk line terminate, that converts light energy used into electromagnetic energy used in coaxial lines
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fiber optic lines
type of cable consisting of very small diameter glass fibers that transmit cable signals on beams of light with very low energy loss
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FTTC
fiber to the curb- fiber from headend to subscriber drop
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FTTP
fiber to the premises- fiber from the headend to security boxes
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Filter
a passive device used in amplifiers to allow some frequencies to pass through, while reducing the strength of other frequencies; filter separates and direct signals on multiple paths
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ground block
a small, metal device that provides a means to ground the shield of a subscriber drop
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headend
the electronic control center that amplifies, converts, processes, and combines all signals transmitted in a cable system
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