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Signal Type Comparisons
Signal Name
Description
Connection Type (s)
Notes
RF
Carries both Video and Audio
RF Connector and Aerial leads
Re-modulating RF from a VCR to a TV for
modulated together to form a
(RF Leads)
example adds the stereo soundtrack together
transmittable signal down a single
to produce Mono sound. Picture quality also
cable
deteriorates when re-modulating a signal.
Composite Video
Carries Video Only.
Yellow Phono
Produces better quality video picture than RF
as the signal does not have to be modulated
Audio must be connected in addition to
BNC (Push & Twist)
get sound
Scart
S-Video
Carries Video Only as separate Colour
Black 4 pin S-Video connector or
S-Video, also referred to as S-VHS, Y & C or
and Black & White Signals
Scart. If carrying S-Video via
Chrominance and Luminance, carries better
Scart, it should be a fully wired
quality video signals than Composite video.
Audio must be connected in addition to
type.
get sound
RGB (Analogue)
Carries Red Green and Blue signals
Analogue RGB is usually carried
RGB offers the best in picture quality of any
that make up a high quality analogue
on a Scart connector along with
of the analogue connections. The picture is
picture. Audio must be connected in
stereo audio. A fully wired Scart
bright clear and has sharp clear edges.
addition to get sound
connector is necessary to use
RGB
Component
Similar in principle to RGB, the Red
3 Separate RCA (Phono) leads
Component video, similar to RGB, offers the
Green and Blue signals are calculated
are used to connect the playback
best in picture quality of any of the analogue
within the TV/Display to produce a
device to the TV/Display. Audio
connections. The picture is bright clear and
high quality video image
must be connected in addition to
has sharp clear edges.
get sound
Digital (HDMI)
HDMI is used on High definition
The physical connection is also
Signals are all digital so they are extremely
products. It carries very high quality
called HDMI. It is a small simple
good quality and are robust. HDMI also
Digital HD video and Digital Audio. It
to use connector which can fit
carries Viera Link control signal and HDCP
also incorporates advances switching
through much smaller holes than
digital copyright protection.
technology
a Scart connector
Page 15
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