|All-dielectric self-supporting cable (ADSS)||
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|Alternating current (AC)||
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|American Standard Code for Information Interchange||
A means of encoding information. ASCII is the method used by Microsoft to encode characters in text files in their operating systems.
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|American Wire Gauge (AWG)||
Standard measuring gauge for nonferrous conductors (i.e., noniron and nonsteel). Gauge is a measure of the diameter of the conductor. The higher the AWG number, the smaller the diameter of the wire. See Chapter 1 for more information.
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A unit of measure of electrical current.
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|Amplitude modulation (AM)||
A method of signal transmission in which the amplitude of the carrier is varied in accordance with the signal.With respect to optical fiber cabling, the modulation is done by varying the amplitude of a light wave, common in analog/RF applications.
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A signal that varies continuously through time in response to an input. A mercury thermometer, which gives a variable range of temperature readings, is an example of an analogue instrument. Analogue electrical signals are measured in hertz (Hz). Analogue is the opposite of digital.
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An electrical signal that varies continuously (is infinitely variable within a specified range) without having discrete values (as opposed to a digital signal).
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|Analogue-to-digital (A/D) converter||
A device used to convert analogue signals to digital signals for storage or transmission.
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To determine whether a destination host is local or remote, a computer will perform a simple mathematical computation referred to as an AND operation.
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|Angle of incidence||
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|Angle of reflection||
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|Angle of refraction||
With respect to fiber optics, the angle formed between the normal (a line drawn perpendicular to the interface) and a refracted beam.
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