Short Technical Guide
PCR PID is the identification 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 identified by the PID number from the data stream and assigns it to the video signal.
Programme package
The programme package for a digital transponder normally includes several TV and radio programmes. Each programme package has a fixed assignment for the transponder transmission frequency, for polarisation (horizontal or vertical), for the symbol rate and for the Viterbi rate or error rate.
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 programme 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 programmes via a digital transponder, we refer to the provider's programme package. The terms “digital transponder” and “programme 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
94