What Is Diseqc - Oyster Vision III Operating Instructions Manual

What is DiSEqC?

The increasing number of TV satellites gave rise to the demand of being able to
receive channels from different satellites.
To facilitate the switching between different satellites, the DiSEqC system has been
developed. This system is incorporated in the receiver and generates a switching
signal that allows the user to view channels of several satellites by simply changing
the TV channel.
The system was initially designed for permanently installed home systems. In such
installations, the individual reception units (satellite dishes) were connected to a
DiSEqC-capable multi-switch (located under the building roof for obvious reasons)
to which the satellite receiver was connected as well.
When the receiver sends a DiSEqC signal to the multi-switch, the switch connects
the receiver to the system aimed at the respective satellite.
The DiSEqC signals are standardized and are generated by almost all state-of-the-
art (DVB-S) satellite receivers.
The Vision system uses this DiSEqC signal to automatically move the antenna into
anyone of the up to 16 preset satellite positions. Please mind that the initial con-
fi guration of a DiSEqC system is relatively complex and can be a challenge even to
experienced users.
When in doubt, have the system confi gured by a qualifi ed expert. The system will of
course only function properly if the preset satellites are actually receivable at your
current location.
* DiSEqC (Digital Satellite Equipment Control) is a registered trademark of the
satellite operator EUTELSAT.
21