SmartSight S1600e, Руководство пользователя

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Glossary S1600e
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NTSC (National Television Standards Committee) The
North American standard (525-line interlaced
raster-scanned video) for the generation, transmission, and
reception of television signals. In addition to North America,
the NTSC standard is used in Central America, a number of
South American countries, and some Asian countries,
including Japan. Compare with PAL.
NTP (Network Time Protocol) A protocol designed to
synchronize the clocks of devices over a network.
OSD (On-Screen Display) Status information displayed on
the video monitor connected to a receiver unit.
Outdoor Wireless Bridge See Bridge.
PAL (Phase Alternation by Line) A television signal
standard (625 lines, 50 Hz, 220V primary power) used in the
United Kingdom, much of western Europe, several South
American countries, some Middle East and Asian countries,
several African countries, Australia, New Zealand, and other
Pacific island countries. Compare with NTSC.
PTL (Push-to-Listen) In a two-way system, the
communication mode in which the listener must push a
button while listening.
PTT (Push-to-Talk) In a two-way system, the
communication mode in which the talker must push a button
while talking.
PTZ Camera (Pan-Tilt-Zoom) An electronic camera that
can be rotated left, right, up, or down as well as zoomed in
to get a magnified view of an object or area. A PTZ camera
monitors a larger area than a fixed camera.
Receiver A device converting a digital video signal into an
analog form. Also called decoder.
Repeater A range extender for wireless links. The
SmartSight repeater is made up of two S3100 bridges (a
master and a slave).
RF (Radio Frequency) Any frequency within the
electromagnetic spectrum associated with radio wave
propagation. When a modulated signal is supplied to an
antenna, an electromagnetic field is created that is able to
propagate through space. Many wireless technologies are
based on RF field propagation.
RS-232 A standard interface approved by the Electronic
Industries Alliance (EIA) for connecting serial devices.