Cable, Network Acronyms, Glossary and Terms
S
S-Video: See S-VHS
S-VHS:
Also known a s-video |
A 4 pin connector that sends video only signals in separate luminance, brightness
and chrominance, colour components. Better quality than composite and it can be
used to send signals over longer distances.
Especially TVs of the higher price segment offer an additional S-video input.
"S" means super and shall clarify that this standard offers a better
quality than normal Composite. The S-video standard transmits video signals on
two lines. On one line you find a b/w picture and on the other line there is the
belonging colour information. By splitting the picture into these parts the interference
effects can be avoided. Also most devices which can handle S-video use the full
resolution of the PAL or the NTSC standards. This leads to a sharper image than
with Composite.
The disadvantage is that two lines are required for signal transmission instead
of one. Also special connectors are necessary, normal BNC/coax connectors can´t
be used.
Using this connection in the UK can some times result in a black and white
picture. This is due to the equipment using different s-vhs, s-video signalling,
typical PAL or NTSC.
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| SCART Connector: |
A common way of connecting TV and video equipment. The SCART will send video
and audio signals. Unless a SCART is bi-directional, it will only send signals
in one direction. For example, a SCART-IN can be used to send a signal in to a
display but not to get a signal out of a satellite box. SCART to Phono (video
and stereo audio) and SCART to S-VHS adapters are available. Unless a SCART socket
is wired for S-VHS, a SCART to S-VHS adapter. Will only give a black and white
picture.
SCART pin connections
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Server: A computing device that provides a service to users on a network
(clients). An example is a file server that stores and maintains documents for
retrieval.
Shielding: A conductive foil or braid that covers insulated wires in
a cable. The shield provides electrical grounding and protection from external
electromagnetic interference (EMI). Shielding is also used to control internal
electromagnetic radiation.
Signal: The signal is the audio or vide information sent down the wire.
Small Computer System Interface (SCSI): A peripheral interface that
is used to connect devices to a computer.
Star: The most common network topology where each node is connected to a central
point. Advantageous because if one part of the star is lost the network remains
intact.
SMT: Station management, NMS for FDDI
SONET: Synchronous Optical Network
Soldering: A means of securing an electrical contact to a wire by heating
a low alloy of tin and lead also known as "solder".
Solid Wire (or Conductor): One strand of wire. Usually less flexible,
lower in cost and lower in resistance than stranded wire of the same AWG. Solid
wire is typically used in permanent installations where flexing does not occur.
S/PDIF:Also known as Sony/Philips Digital Interface Format#
Speaker Connections:
Stereo mixer to PC
Strain Relief: A method of protecting the wire to contact point from
flexing or pulling.
Stranded Wire (or Conductor): Multiple small AWG strands of wire that
are put together to make a flexible wire with similar electrical properties as
a similar solid wire. Stranded wires are usually used in data cabling.
Surround Sound
Switch: A switch is a multiport bridge that segregates different portions
of a network for faster network access (See Basic Ethernet Theory - right).
Synchronous Optical Network, SONET: A Bellcore and
ANSI standard that defines transmission of synchronous and time sensitive (ex:
real time video) information. SONET provides a way for world-wide carriers to
connect equipment.
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