PRETS 300 333-1993 Satellite Earth Stations (SES); Receive-Only Very Small Aperture Terminals (VSATSs) Used for Data Distribution Operating in the 4 GHz Frequency Band
"This European Telecommunication Standard (ETS) provides specifications for the standardization of the characteristics of receive-only Very Small Aperture Terminals (VSATs) operating as part of a satellite network used for the distribution of data. These VSATs have the following characteristics: - operating in the shared part of the C band allocated to the Fixed Services (FS) and to the Fixed Satellite Services (FSS)@ 3@625 to 4@250 GHZ (Space-Earth); - in this frequency band circular polarization is normally used and the system operates through satellites at 3??pacing; - designed for unattended operation; - limited to the reception of baseband digital signals; - equipped with one or several terrestrial output ports; - antenna diameter not exceeding normally 7@3m@ or equivalent corresponding aperture. The equipment considered in this ETS comprises both the ""outdoor unit""@ usually composed of the antenna subsystem and@ associated Low Noise Block (LNB)@ and the ""indoor unit"" composed of the remaining part of the communication chain@ including the cable between these two units. This ETS does not contain any requirement@ recommendation or information about the installation of the VSATs@ nor is this ETS intended to apply to VSAT network hub stations. The ETS deals with two types of specification: a) Essential normative requirements (indicated in Clause 4) Requirements are specified in order to protect other users of the frequency spectrum@ both satellite and terrestrial@ from unacceptable interference@ In addition @ requirements are specified for the purposes of electrical safety@ structural safety and solar radiation protection as well as protection from harmful interference. The test and measurement procedures associated with the normative requirements detailed in Clause 4 of this ETS shall be met in order to qualify compliance with this ETS. b) Recommendations (indicated in Clause 5) These are related to characteristics which contribute to the quality of reception by providing the VSAT with a minimum interference protection from other radio systems. The test and measurement procedures associated with the informative recommendations detailed in Clause 5 of this ETS are given for verification purposes only. The compliance with the recommendations will not be taken as a condition to comply with the ETS. All tests related to the requirements shall be performed and the results shall be entered in the data sheet of the test report. The ability to comply with the recommendations shall also be noted in the data sheet of the test report."
PRETS 300 333-1993 history
1997PRETS 300 333-1997 Satellite Earth Stations and Systems (SES); Receive-Only Very Small Aperture Terminals (VSATs) Operating in the 4 GHz Frequency Band (Second Edition)
1996PRETS 300 333-1996 Satellite Earth Stations and Systems (SES); Receive-Only Very Small Aperture Terminals (VSATs) Operating in the 4 GHz Frequency Band Second Edition
1993PRETS 300 333-1993 Satellite Earth Stations (SES); Receive-Only Very Small Aperture Terminals (VSATSs) Used for Data Distribution Operating in the 4 GHz Frequency Band