BS EN 50494:2007

What is this BS EN 50494 - Satellite signal distribution about?

BS EN 50494 discusses satellite signal distribution over a single coaxial cable in single dwelling installations. BS EN 50494 describes:

• The system physical structure
• The system control signals, which implement an extension of the DiSEqC set of commands described in the DiSEqC bus functional specification
• The definition of identified configurations
• Management of the potential collisions in the control signals traffic

Several satellite signal demodulators can receive signals from any of the input signal banks of the LNB or the switch; the signals selected by the demodulators (or receivers) are transported via a single cable to these demodulators (receiver 1, receiver 2, receiver N).

Who is BS EN 50494 - Satellite signal distribution for?

BS EN 50494 on satellite signal distribution is useful for:

• Single coaxial cable installers
• Satellite signal distribution facilities
• Telecommunication companies
• Regulatory authorities

Why should you use BS EN 50494 - Satellite signal distribution?

The hardware of the communication bus has to be realized according to the DiSEqC bus functional specification. Some additional care shall be taken to ensure an appropriate impedance of the installation during the DiSEqC sequences. BS EN 50494 describes the procedure and the DiSEqC control sequences required for implementing an automatic recognition of the parameters of the SCIF. BS EN 50494 defines the DiSEqC control sequence used during special modes of the system; the control signals of this subclause use the command value: 5Bh.

BS EN 50494 provides a purpose that is to introduce a complete system for distributing via a single coaxial cable signals issued from different bands and polarizations to several satellite receivers. BS EN 50494 only deals with the installation mode; further extension could integrate functions required by other special modes.