Signal Processing to the Level Distributor

The purpose of a data processing center is parametrizar the information received so that it complies with a single standard pre-defined, both in terms of levels of audio-video, and in terms of digital encoding. It is therefore natural that the signals received are processed in different ways since arriving in different formats.

In the case of receiving satellite, reaches the headend (common name of the place where the processing takes place) comes a signal in the band between 900Mhz and 1800Mhz, coded and sometimes encrypted (Nagravision, Viaccess, are examples of types encryption).

The first operation will be the decoding and, if necessary, the desencriptação data received. This operation causes the separation of the video and audio signals, thus creating 2 signs distinct band in the base (in practice are 3 signals since the audio signal is divided into 2-channel left and right).