Bedienungsanleitung Kathrein UFS 641si (Seite 79 von 84) (Englisch)

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SHORT TECHNICAL GLOSSARY

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 single-cable system is used to distribute digital

Sat IF signals (including HDTV) and terrestrial

signals over one 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 over 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 single-cable system satisﬁ es

the single-cable standard in accordance with

EN 50494, i.e. all 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

Standby

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 a

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/DVR 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

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Kathrein UFS 641si Seite 79

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