Cisco Model GS7000 4-Port Node 1 GHz with 42 54 Split Guia Da Instalação
Glossary
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53
dBW
decibels relative to 1 watt.
dc, DC
direct current. An electric current flowing in one direction only and substantially constant in
value.
value.
distribution system
The part of a CATV system consisting of the transmission medium (coaxial cables, fiber optic
cables, etc.) used to carry signals from the headend system to subscriber terminals.
cables, etc.) used to carry signals from the headend system to subscriber terminals.
duplexer
A device which permits the connection of both a receiver and a transmitter to a common
antenna.
antenna.
E
EEPROM
electrically erasable programmable read-only memory.
EMC
electromagnetic compatibility. A measure of equipment tolerance to external electromagnetic
fields.
fields.
EPROM
erasable programmable read-only memory.
EQ
equalizer.
equalization
The process of compensating for an undesired result. For example, equalizing tilt in a
distribution system.
distribution system.
ESD
electrostatic discharge. Discharge of stored static electricity that can damage electronic
equipment and impair electrical circuitry, resulting in complete or intermittent failures.
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.
in accordance with the modulating signal.