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Receivers
Receiver
RGB
Video signal made up of three individual colour
signals (red, green, blue)
SAT IF signal
Receiver input signal, satellite intermediate
frequency
Scart cable
21-pin connecting cable (e.g. receiver/TV)
SCR single cable system - Satellite Channel
Router
The one cable system is used to distribute digital Sat
IF signals (including HDTV) and terrestrial signals
over a single cable to up to eight receivers. There is
no limit on the variety of channels, i.e. the complete
range of channels from one or two satellites
is transmitted. Switching and the transponder
selection are undertaken in the feed system or in
the matrix and are controlled by the receiver using
a special DiSEqC™ command to EN 50494. Each
receiver is allocated a
fi
xed subscriber frequency
via which it receives its channels. A twin receiver
requires two such subscriber frequencies. The
transponder selection and conversion to the
subscriber frequencies is undertaken using special
tuner modules, so-called SCR (Satellite Channel
Router), that are installed in the feed system or in
the matrix.
The Kathrein one cable system satis
fi
es the single-
cable standard in accordance with EN 50494, i.e.
all the components of a single-cable system that
satisfy this standard can be installed in a satellite
system.
Smart card
Card from Pay TV provider to decrypt its channels
Stand-by
Standby mode
Symbol Rate
The symbol rate describes the quantity of data
that is transmitted per second. The symbol rate
is measured in MSymbols/s and is equal to the
number of symbols received per second.
Timeshift function
Time shifted playback
Transponder
A transponder is a frequency converter which
receives TV and radio signals broadcast from the
earth, converts them and the rebroadcasts them
to the earth at a different frequency. A satellite has
several transponders.
Analogue transponders transmit only one TV
channel and possibly multiple radio channels on a
single transmission frequency.
Digital transponders simultaneously transmit
several TV and several radio programmes on
one transmission frequency. If a channel provider
is broadcasting several TV channels via a digital
transponder, we refer to the provider's channel
package. The terms “digital transponder” and
“channel package” have the same meaning.
VCR/PVR connection
Connection for an external recorder (such as a
video or DVD recorder)
Viterbi rate
The Viterbi rate (code rate, error rate) characterises
the error protection used by the channel provider.
The DVB standard provides the following values:
1/2 - 2/3 - 3/4 - 5/6 - 7/8
Y/C
S-video signal
8PSK (8 Phase Shift Keying)
Digital modulation process used for HDTV
satellite transmission
Short Technical Glossary