Kathrein Twin-PVR Satellite UFS 821si - Manual (Page 125)

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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 channels on the transmission frequency.
Digital transponders simultaneously transmit several TV channels and
several radio channels at a transmission frequency. If a programme
provider is broadcasting several TV channels 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
Short Technical Guide