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.
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.
frequency stability
A measure of the departure from nominal frequency value of a signal, with respect to time,
temperature, or other influence.
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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