SHORT TECHNICAL GUIDE
PID
The PID (Packet IDentification) number is an identification number for video signals and audio signals in the digital data stream of
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 channels on the transmission frequency.
Digital transponders simultaneously transmit several TV and several radio programmes at a transmission frequency. If a channel provider is broadcasting several TV channels via a digital transponder, we refer to this as 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
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