Cisco GS7000 Installation And Configuration Manual page 152

Glossary
ESD
electrostatic discharge. Discharge of stored static electricity that can damage electronic
equipment and impair electrical circuitry, resulting in complete or intermittent failures.
F
FCM
forward configuration module.
FET
field-effect transistor. A transistor in which the conduction is due entirely to the flow of
majority carriers through a conduction channel controlled by an electric field arising from a
voltage applied between the gate and source electrodes.
FM
frequency modulation. A transmission technique in which the frequency of the carrier varies
in accordance with the modulating signal.
frequency
The number of similar shapes in a communications or electrical path in a unit of time. For
example, the number of sine waves moving past a fixed point in a second.
frequency agile
The ability to change from one frequency to another without changing components.
frequency response
The effect that changing the frequency has on the magnitude of a signal.
ft-lb
foot-pound. A measure of torque defined by the application of one pound of force on a lever
at a point on the lever that is one foot from the pivot point.
G
gain
A measure of the increase in signal level, relative to a reference, in an amplifier. Usually
expressed in decibels.
H
Hertz
A unit of frequency equal to one cycle per second.
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