Definition of terms concerning satellite reception

6. Definition of terms concerning satellite reception

This compendium was prepared with the aid of the Internet website www.wikipedia.de

You can find further information concerning this subject on the same webpage.

DiSEqC - Digital Satellite Equipment Control

describes a digital control signal technology, applied in the building cabling of satellite reception facilities, DiSEqC-control signals compared to the 14/18- Volt- and 22-kHz control signals enable broader range of functions in satellite reception.

DiSEqC switching commands are transmitted serially as digitally encrypted data words.

22kHz Switchbox – Switch for two satellites

22kHz Switchbox is an electronic switch which is controlled with a 22kHz signal from the satellite receiver. The switch can be found between the receivers and the satellite equipment. Attention! When this point is not properly configured, it could happen that only one satellite will be found in a search (usually the satellite which is connected to the first port (0kHz) of the switchbox).

Toneburst

To obtain another switch criterion (along with 14/18 volt and 22 kHz) tone burst was introduced. Here only one sequence of bits (e.g. "0" = satellite A or "1" satellite B) is modulated onto the 22 kHz signal.

Highband 22kHz signal

The 22kHz signal is required for switching between lower and upper sideband. Thus the 22kHz signal is another switch criterion (along with 14/18 Volt) and is transmitted by the satellite receiver to the multiswitch/LNB.

Toneburst switchbox - switch for two satellites

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