scope:

This European Telecommunication Standard (ETS) gives the minimum technical characteristics specifications of satellite earth stations, capable of receiving audio-visual signals and distributed data.

The equipment considered in this ETS, is confined to the "outdoor unit" that consists of the antenna with the feed and the low-noise amplifier with its associated down-converter, referred to as Low-Noise Block (LNB) converter.

The output interface towards the indoor unit is defined at the LNB output connector. Consequently the coaxial cable link to the "indoor unit", the Intermediate Frequency (IF) amplifier and the demodulator are not covered by this ETS.

This ETS is applicable to earth stations which receive audio-visual signals and distributed data in the Fixed Satellite Service (FSS) frequency bands (10,70 GHz to 11,70 GHz and 12,50 GHz to 12,75 GHz) and in the Broadcast Satellite Service (BSS) frequency band (11,70 GHz to 12,50 GHz) from geostationary satellites.

The earth station may be capable of receiving from a single or from two/more orbital locations by means of either:

- motorized antenna; or

- LNB which allows the reflector or feed to be re-pointed along the orbital arc; or

- fixed reflector with a multiple-feed system whereby each feed is pointed towards a different position on the orbital arc.

This is referred to as "multiple-feed" in this ETS.

TeleVision Receive-Only (TVRO) earth stations are classified in two different types according to the corresponding services:

 Type A for collective reception, in particular:

- cable distribution head-ends: Community Antenna TeleVision (CATV);

- community reception systems: Master Antenna TeleVision (MATV).

Type B for individual reception, i.e. Direct-To-Home (DTH) equipment.

This ETS makes clear distinction, wherever applicable, between Type A and Type B equipment specification.

The received television signals can be analogue or digital, all with the associated TV sound, and possibly other audio programmes.

EMC specifications are contained in EN 50083-2 [2], EN 55013 [7] and EN 55020 [6].

Safety specifications are contained in EN 50083-1 [1] and in clause 5 of this ETS.

This ETS deals with two types of specifications:

a) specifications made:

- to protect other users of the frequency spectrum (both satellite and terrestrial) from unacceptable interference;

- for structural safety;

- for lightning protection;

- for protection from harmful interference.

b) specifications:

- related to the quality of reception;

- to assist manufacturers to harmonize equipment design;

- to enable equipment distributors and end-users to better determine equipment performance.

NOTE: These specifications apply if required by the manufacturer.