federated
adjectiveElectrical engineering
Interconnected, as a federation or supernetwork of independent and interoperable services.
Electrical engineering
651 entries in this trade.
federation
A collection of network or telecommunication providers that offer interoperability.
feed-through
A hermetically sealed connection between two volumes.
femtocell
A wireless communication system, smaller than a picocell, typically designed for use in a home or small business.
field emission display
a flat panel display technology that uses large-area field electron sources to provide electrons that strike coloured phosphors to produce a colour image. In a general sense, an FED consists of a matrix of cathode ray tubes, each tube producing a single sub-pixel, grouped in threes to form red-green-blue (RGB) pixels.
flapping
The situation where a resource, a network destination, etc., is advertised as being available and then unavailable (or available by different routes) in rapid succession.
flash cut
A change made to a complex system with immediate effect, one made without a phase-in period.
flashover voltage
The voltage at which an electric discharge occurs between two electrodes that are separated by an insulator.
FMNP
Initialism of full mobile number portability.
forward echo
The propagation of a signal reflection in the same direction as the original signal and consisting of energy reflected back by one discontinuity and then forward again by another discontinuity.
Fourier transform
A particular integral transform that when applied to a function of time (such as a signal), converts the function to one that plots the original function's frequency composition; the resultant function of such a conversion.
FPGA
Initialism of field-programmable gate array.
frequency assignment
The process of authorizing a specific frequency, group of frequencies, or frequency radio band to be used at a certain location under specified conditions, such as bandwidth, power, azimuth, duty cycle, or modulation.
frequency band
Synonym of band (“a designated range of radio frequencies used for wireless communication”)
FSM
Initialism of field strength meter.
FTTD
Initialism of fiber to the desk/desktop.
FTTX
Initialism of fiber to the x, various configurations for the deployment of optical fiber.
gate off
To turn something off by controlling its gate.
GBIC
Acronym of gigabit interface converter, a kind of transceiver.
GBR
Initialism of guaranteed bitrate.
generation loss
The loss of quality between successive copies, usually associated with magnetic audio and video media.
GFET
Acronym of graphene field effect transistor
ghost call
A telephone call for which, when the recipient of the call answers, there is no one on the other end.
GIP
Initialism of GSM Interworking Profile (profile that allows a DECT base station to form part of a GSM network, given suitable handsets)
glare
A call collision; the situation where an incoming call occurs at the same time as an outgoing call.
GMPLS
Initialism of generalized multi-protocol label switching.
GPRS
Initialism of General Packet Radio Service.
ground loop
A (usually unwanted) current that flows between two points that are meant to be at the same potential, but are not.
ground out
To provide proper grounding for a circuit.
grounded
adjectiveElectrical engineering
Of or pertaining to an electrical conductor which is connected to earth; earthed.
grounding
The interconnecting metal chassis or frame of a device, appliance, machine, or metal raceway via a designated conductor to earth at the service panel. It may be bare or covered, and does not carry current in normal operation.
GSM
Initialism of Global System for Mobile communications.
GTL
Initialism of Gunning transceiver logic.
guard band
An unused part of the radio spectrum between bands, for the purpose of preventing interference.
Gunn effect
The generation of high-frequency (usually microwave) oscillations within a semiconductor whenever an applied DC voltage exceeds its threshold value.
G³
Abbreviation of gadolinium gallium garnet.
H-field
An auxiliary vector field that describes the driving magnetic influence produced by free currents, independent of the material's response.
hacker
One who uses a computer to gain unauthorized access to data stored in, or to carry out malicious attacks on, computer networks or computer systems.
hammer break
An interrupter in which contact is broken by the movement of an automatically vibrating hammer between a contact piece and an electromagnet, or of a rapidly moving piece mechanically driven.
Hamming code
Any of a family of linear error-correcting codes that generalize the Hamming(7,4)-code invented by Richard Hamming in 1950.
hardline
A physical wire or cable connection; landline.
hardware node
A physical device that is connected to a network and is able to send, receive, or forward information.
hash noise
A harsh, pulsating, or buzzy interference signal, often caused by ground loops, electromagnetic interference, or failing components.
HDL
Initialism of hardware description language.
HDSL
Initialism of high-bit-rate digital subscriber line.
helpline
A telephone service (or (by extension) one using email, SMS, or the Web) which offers help to those who call, as either a public emergency service or customer service.
high shelf
A filter that gradually increases or decreases frequencies above a certain point in the frequency spectrum.
high-level synthesis
A design method that automatically transforms an algorithmic or behavioral description of a digital system, written in a high-level language such as C or C++, into a register-transfer level hardware description suitable for FPGA or ASIC implementation.
hold time
The amount of time spent in a phone queue on hold.
home run
A connection from a central distribution point or circuit breaker to a destination.
hook flash
A signal that briefly disconnects the local loop circuit by means of the hookswitch or a dedicated button, used to control functions on the public telephone exchange.
horsepower-hour
A unit of energy equal to the amount of work a horse is capable of delivering during an hour.
hotel load
The electrical load caused by all systems on a vehicle (especially a marine vessel or a truck) other than propulsion.
HSDPA
Initialism of High Speed Downlink Packet Access (in UMTS).
hunting
The process of determining which of a group of telephone lines will receive a call.
HVTL
Initialism of high-voltage transmission line.
I/O
Abbreviation of input/output.
IGBT
Initialism of insulated-gate bipolar transistor.
IGCT
Initialism of integrated gate-commutated thyristor.
ILEC
Initialism of incumbent local exchange carrier.