Kathrein UFS 923, Руководство по эксплуатации

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PID
The PID (Packet IDenti fi cation) number is an
identi fi cation number for video signals and audio
signals in the digital data stream of DVB-MPEG-2
signals. The receiver uses the PID number to cre-
ate a unique assignment for the video and audio
data transmission. The PCR PID is the identi
fi ca-
tion number for the synchronisation signal. The
PID PCR is normally identical to the video PID.
For programmes broadcast in multiple languages,
the audio PD can be entered manually to assign
a different language to the TV programme. After
the PID is entered, the digital receiver automati-
cally selects the audio data identi
fi ed by the PID
number from the data stream and assigns it to the
video signal.
PIN
Personal Identi fi cation Number. For this unit the
PIN is a 4-digit numeric code which must be
entered to unlock the unit to allow access to cer-
tain functions and channels.
Pay TV
Television channels available on subscription
(e.g. Sky). Encrypted transmitters which can be
decrypted only by using the appropriate smart card.
As a rule these services are subscription-only.
Polarisation
The individual transponders on satellites transmit
on two different (polarisation) planes (horizontal
and vertical). As a result the capacity of the tran-
sponder is increased.
QPSK - Quadrature Phase Shift Keying
Digital modulation process that is used for satel-
lite transmission (8PSK is also used in connection
with HDTV).
RGB
Video signal made up of three individual colour
signals (red, green, blue)
Receivers
Receiver
SAT IF signal
Receiver input signal, satellite intermediate
frequency
SCR single cable system - Satellite Channel
Router
The single-cable system is used to distribute digi-
tal Sat IF signals (including HDTV) and terrestrial
signals via 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 satel-
lites 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 sub-
scriber 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 satis
fi es the sin-
gle-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
Scart cable
21-pin connecting cable (e.g. receiver/TV)
Smart card
Card from pay TV provider to decrypt its channels
Standard gateway
This is used as an interface between two networks
or computers that are linked via a router.
As a result, it is possible to transmit data.
Standby
Standby mode
Streaming
Transmission of data (recordings) in real time
Subnet mask
De fi nes an IP address range in a subnet (small
independent network).
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 num-
ber of symbols received per second.
Brief Technical Glossary