Include

[CrEaTrE]

T

THD Total Harmonic Distortion. A component specification which describes its ability to accurately reproduce a signal. Although lower numbers are considered to be better, the human ear typically cannot detect THD ratings below 2% or 3%.3

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Thin Film Transistor (TFT) Active Matrix Display A specific type of LCD display in which one to four transistors control each pixel. This technique offers the best resolution of all LCD, flat panel display types.1

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TOC (Table Of Contents) The digital subcode information that identifies a disc, indication the number of tracks, the starting and ending points of these tracks and the total running time of the disc. When include, CD Text information is stored in the TOC.1

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Toroidal Coil An inductor or transformer whose core consists of a concentrically wound ribbon of magnetic material. Also used to filter noise on a DC supply line.4

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Trace The path of conductive material that conveys voltage or current from one point to another on a printed circuit board. Traces add resistance to the circuit .4

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Transceiver A combination radio transmitter/receiver usually installed in a single housing and sharing some components.2

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Transducer Any device which converts energy from one form to another, i.e., electrical to acoustic or vice-versa. Loudspeakers and microphones are two types of transducers.2

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Transformer An electrical device that can be used to provide circuitry isolation, signal coupling, impedance matching, or voltage step-up .4

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Transients A non-repeating sound (such as percussion in music) or an abrupt change of voltage. How a speaker handles transients is a good indicator of its performance .4

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Transistor An active (commonly three terminal) solid-state device in which a larger output current is obtained by small changes in the input current.2

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Transmitter The name given to the hand-held remote control unit used by a vehicle operator to arm/disarm and perform accessory functions on a vehicle security system. More commonly called a remote.2

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Trigger The common name for any type of stimulus that will cause a security system to produce an alarm. A trigger could come from a pinswitch, a sensor, or a direct command from a transmitter or accessory button.2

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Trunk Lines The way the cellular system transfers the mobile calls to the landline network.2

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Trunk Release The ability of a system to release the latch of the trunk/hatch by remote control.2

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TV Control The ability of a component to operate a TV tuner.3

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Tweeter A small loudspeaker or driver meant to reproduce treble frequencies.2