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PIP
Picture In Picture function
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.
Transponder
A transponder is a satellite channel which transmits TV and
radio signals. A satellite has several transponders.
Analogue transponders transmit only one TV channel and
possibly multiple radio programmes on the transmission
frequency.
Digital transponders simultaneously transmit several TV and
several radio programmes at a transmission frequency. If a
programme 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.
Video bit rate
The video bit rate describes the quantity of data from the
digitised video signal that is transmitted per second.
Viterbi rate
The Viterbi rate (code rate, error rate) characterises
the error protection used by the programme provider.
The DVB standard provides the following values: 1/2 - 2/3
- 3/4 - 5/6 - 7/8
Short technical guide
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 create a unique assignment for the video and audio
data transmission. The PCR PID is the identi
fi
cation number
for the synchronisation signal. The PCR PID is normally
identical to the video PID. For programmes broadcast in
multiple languages, the audio PID can be entered manually
to assign a different language to the TV programme. After
the PID is entered, the digital receiver automatically selects
the audio data identi
fi
ed by the PID number from the data
stream and assigns it to the video signal.
PID
