Cisco GS7000 Installation And Operation Manual page 65

equipment and impair electrical circuitry, resulting in complete or intermittent failures.
F
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.
HFC
hybrid fiber/coaxial. A network that uses a combination of fiber optics and coaxial cable to
transport signals from one place to another. A broadband network using standard cable
television transmission components, such as optical transmitters and receivers, coaxial cable,
amplifiers, and power supplies. The broadband output stream is transmitted as an optical
signal, over the high-speed, fiber optic transmission lines to local service areas where it is
split, converted to electrical RF signals, and distributed to set-tops over coaxial cable.
4022871 Rev C
Glossary
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