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Glossary

0-9| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z



100-BaseT - A baseband, twisted pair wiring support 100 Megabit per second of transmission speed
10-BaseT - A baseband, twisted pair wiring supporting 10 Megabit per second of transmission speed.


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Abrasion Resistance - Ability to resist surface wear.
Adapter - Provide the change in physical connection from one type to another
Analog - Representation of data by continuously variable quantities
ANSI - Abbreviation for American National Standards Institute
ASA - Abbreviation for American Standards Association
ASCII - Abbreviation for American Standard Code for Information Interchange
Attenuation - Power loss in an electrical system.
AWG - Abbreviation for American Wire Gauge, measured for wire diameter.


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Backshell - A mechanical backing found on a connector covering conductors.
Bandwidth - The difference between the upper and lower limits of a given band of frequencies.
Baseband - A signal transmission measured from zero to highest frequency
Baud Rate - Data transmission speed in bits per second
Bit - One binary digit
Boot - A protective covering over a cable in addition to its jacket or insulation.
Braid - A fibrous or metallic group of filaments interwoven in cylindrical form to use as a shield covering for an insulated conductor or group of insulated conductors.
Breakout Cable - Also called fanout cable. A conductor or group of conductors break out from a multi-conductor cable to complete circuits at various points along the main cable.
Broadband - A signal transmission handled by more than one channel in a wide range of frequencies.
Byte - A group of eight binary digits


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C.S.A. - Abbreviation for Canadian Standards Association.
Cable Assembly - A length of cable with connectors on one or both ends which is ready to install
TIA/EIA-568-B - A set of three standards as the building requirement for telecommunication cabling.
CATV - An acronym fro Community Antenna Television
Centronics - The parallel interface named for the company, Centronics Data Computer Corporation, who was the first computer printer's manufacturer.
Cladding - The material surrounding the core of the fiber
Coaxial Cable - A cable consisting of two cylindrical conductors with a common axis, separated by a dielectric.
Component Video - The highest quality types of analog video signals consists of two or more separate signals, normally two color signals, and luminance or chrominance signal.
Component Video cable - A cable transmitting analog video signals with RCA or BNC connectors in three separate cables colored red, green and blue.
Composite Video - The common analog video signal combines all the picture information into one signal.
Composite Video Cable - A yellow cable transmitting picture information thru a single signal with RCA connector.
Conductor - An uninsulated wire suitable for carrying electrical current.
Connector - A device used to physically and electrically join two or more conductors.
Cord - A small, flexible insulated cable
Core - The center of an optical fiber.
Crosstalk - A type of interference caused by signals from one channel to another
CRT - Abbreviation for Cathode Ray Tube


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Decibel (dB) - A unit to express the intensity of sound.
Dielectric - An insulating material between two conductors and permits electrostatic attraction and repulsion to take place across it.
Digital - Representation of data by discrete characters, i.e. 0/1 or high/low.
DIN - The German Institute for Standardization. Also a connector type that utilizes multiple pins arranged in circular fashion and a round shaped housing.
Drain Wire - An uninsulated wire laid in a cable shield to make a ground connection
Drop Cable - The cable pulled from telecommunication central office (CO) to the premises.
D-Subminiature - A connector type that utilizes multiple pins and a D shaped housing.
DVI - Abbreviation for Digital Visual Interface, an interface developed by the Digital Display Working Group (DDWG) for the transmission of uncompressed digital video data to a display.


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EIA - Abbreviation for Electronic Industries Association.
EMI - Abbreviation for electromagnetic interference. Undesired energy generated by outside sources involving electric and magnetic fields with movements of electrons through conductors


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FEP - Fluorinated Ethylene Propylene insulation
Ferrites - A cylinder of magnetized iron placed on the end of data cables to reduce interference.
Fiber - A single, separate optical transmission element characterized by a core and a cladding
Fiber Optics - Light transmission through fibers for communication.
Fibre Channel - A scalable, high speed, serial data transfer interface.
Flat Cable - Multiconductor cable arranged in a parallel type configuration
Flexibility - The quality of a cable or a cable component which allows for bending under the influence of outside force.
FPL - Power Limited Fire Protective Signal Cable (NEC Art. 760)
FPLP - Plenum rated Power Limited Fire Protective Signal Cable (NEC Art. 760)
FPLR - For use between Risers Power Limited Fire Protective Signal Cable (NEC Art. 760)
Frequency - The number of cycles per second


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Gauge - A term to denote the physical size of a wire
Gender - Type of receptacle in male and female connectors.
Gigabit Ethernet - A data transmission rate up to 1000 Megabits per second in a network environment.
GPIB - Abbreviation for General Purpose Interface Bus Assembly typically used for interconnecting measurement devices
Ground - A conducting connection between an electrical circuit and the earth to make a complete electrical circuit


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Hertz (Hz) - The number of cycles-per-second as a unit of frequency


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IEEE - Abbreviation for Institute of Electrical and Electronic Engineers. A group of engineers and scientists who develop standards for the computer and electronics industry.
Impedance - A measure of material's resistance to the transfer of electricity. It is a combination of resistance and reactance, measured in Ohms.
Insertion Loss - The power loss due to the insertion of a component, connector, or device in a transmission line. Measured in dB.
Insulation - A material having high resistance to the flow of electric current
Interference - An outside disturbances which introduce undesirable responses.
ISO - Abbreviation for International Standards Organization.


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Jack - A female receptacle
Jacket - An outer covering used for protection against the environment.


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LAN - Abbreviation for Local Area Network. A computer network covering a local area.
Loopback - A troubleshooting technique to allow a device's transmit pin connecting to its receive pin for testing functionality.
Low Loss - Low in signal loss.
LVDS - Abbreviation for Low Voltage Differential Signals. An electrical signaling system which runs at very high speeds with reduced on-chip power consumption. matched Impedance
Meter - One meter equals 3.28 feet
Foot - One foot equals 0.3048 meter.


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Mode (fiber) - A permitted field pattern within waveguide fiber.
Modular Jack - A female receptacle for RJ-11/12 (6 contact) and RJ-45 (8 contact) connector, usually found at the end of cabling drop.
Molded - An injection molding process to seal a connector hood in a mold of PVC plastic.
Multi-Fiber Cable - An optical cable having move than one fiber.
Multi-Mode (fiber) - An optical waveguide which allows more than one mode to propagate.
Mylar - DuPont trade name for a polyester material.


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NIC - Abbreviation for Network Interface Controller. A computer hardware allows computers to communicate over a computer network.


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OEM - Abbreviation for Original Equipment Manufacturers.


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PATA - Abbreviation for Parallel Advanced Technology Attachment, a standard 40-pin interface for connecting internal storage devices by a ribbon cable.
Patch Cord - An electrical cable to connect between the terminal device and the drop.
Pin - A metal contact inside a connector.
Pixel - A single point (picture element) in a graphic image.
Plenum - The area over a dropped ceiling or under a raised floor.
Plenum cable - Cable listed by Underwriters laboratories for installation in plenums. The cable is coated with a fire-retardant coating.
PVC - Polyvinyl Chloride insulating and jacketing material on a wide variety of cables.


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Quad Shield - 2 Foil 2 Braid


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RCA - Abbreviation for Radio Corporation of America. The RCA connector, is also known as a phono connector, is a type of electrical connector which is primarily used for connecting audio and video equipment, consisting of a central male connector, surrounded by a ring.
Resolution - The number of horizontal pixels by the number of vertical lines in a given area of an image.
Return loss - The ratio of the given power into a cable and the amount of optical power reflected back through the connector. Measured in decibel unit.
RFI - Abbreviation for Radio Frequency Interference. Unwanted reception of radio signals within the radio frequency band.
RG/U - Abbreviation for Radio Government Universal. RG is the military designation for coaxial cable that is built to U.S. government specifications.
RGB Abbreviations for Red, Green and Blue. The three primary colors.
RJ-11 - A type of registered jack, a modular connector with six positions and two conductors (6P2C).
RJ-12 - A type of registered jack, a modular connector with six positions and four conductors (6P4C).
RJ-45 - A type of registered jack, a modular connector with eight positions and eight conductors (8P8C).


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SATA - Abbreviation for Serial Advanced Technology Attachment, a 7-pin interface provides higher signaling rate and data throughput over the legacy ATA standard
SCSI - Abbreviation for Small Computer System Interface. A standard interface for transmitting data between host controller and devices on a parallel computer bus.
Shield - A nonmagnetic, metallic layer placed around a conductor or group of conductors to prevent electrostatic or electromagnetic interference between adjacent wires and external sources, usually fabricated from a metallic braid or foil.
Signal - A current used to transmit information.
Singlemode (fiber) - An optical waveguide which allows only one mode to propagate.
Skew - A measurement of the difference in the electrical length of two conductors or pairs of conductors.
Solid Conductor - A conductor consisting of a single wire
STP - Abbreviation for Shielded Twisted Pair. To protect cable from external EMI, STP cabling includes metal shielding over each individual pair of copper wires.
Strain Relief - A method of protecting the cables from putting stress at the point where the cabling meets the connector, upon pulling or flexing.
Stranded Conductor - A conductor composed of a group of wires twisted together.
SVGA - Abbreviations for Super Video Graphics Array. One of the computer display standards refers to a resolution of 800x600 pixels and higher.
S-video - A video signal that separates the chrominance and luminance information.


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Termination - To end a signal chain by putting a terminator on the unconnected end of a transmission line, or putting a connector on a wire that can be connected to another
Tinned Wire - Copper wire that has been coated with a layer of tin or solder to facilitate soldering.
Transmission Loss - The loss in power during transmission of energy from one point to another
Twisted pair - Two conductors twisted together to greatly reduce crosstalk from neighboring wires and cancel out EMI from external sources.


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UL - Abbreviation for Underwriters laboratories. An organization provides a listing service for electrical and electronic materials and equipment.
USB - Abbreviation for Universal Serial Bus. A plug-and-play serial bus interface to connect peripherals to a computer. A single host controller can support up to 127 USB devices. Towards a legacy-free PC, computer peripherals are providing USB interface with fast data transmission up to 12Mbps and daisy-chaining capability.
USB 2.0 - Abbreviation for Universal Serial Bus Version 2.0. It support transfer speed of up to 480Mbps and is fully backward compatible with older USB devices.
USOC - Abbreviation for Universal Service Ordering Codes.
UTP - Abbreviation for Unshielded Twisted Pair. The most common cabling used in data networking.


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VGA - Abbreviation for Video Graphics Array. One of the computer display standards refers to a resolution of 640×480 pixels.
VHDCI - Abbreviation for Very High Density Cable Interconnect. A 0.8mm connector for next generation Ultra-SCSI applications.


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WAN - Abbreviation for Wide Area Network. A computer network covering a broad geographical area, such as the Internet.


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