ETSI - PRETS 300 423
Satellite Earth Stations and Systems (SES); Land Mobile Earth Stations (LMESs) Operating in the 1,5/1,6 GHz Bands Providing Voice and/or Data Communications
| Organization: | ETSI |
| Publication Date: | 1 January 1994 |
| Status: | inactive |
| Page Count: | 26 |
scope:
This European Telecommunication Standard (ETS) provides specifications for the standardisation of the characteristics of Mobile Earth Stations (MESs) using geostationary satellites with both transmit and receive capabilities in order to ensure general safety and to limit interference to radiocommunication services.
The geostationary satellite networks referred to in this ETS operate under the Land Mobile Satellite Service (LMSS). The MESs operate as a part of a satellite network providing voice and/or data communications.
These MESs generally have the following characteristics:
- the MESs could be either vehicle mounted or portable equipment;
- the MES could consist of a number of modules including suitable interfaces to the user.
The main specifications are contained in three categories related to:
- safety: to protect personnel, public and goods from unsafe operating conditions or equipment;
- unwanted emissions: to protect terrestrial and satellite radio services from harmful interference;
- MES control and monitoring: to specify a minimum set of Control and Monitoring Functions (CMFs) to be implemented on each MES in order to minimise the probability that they originate unwanted transmissions that may give rise to harmful interference to other systems.
This ETS deals with two types of specification:
1) essential requirements (indicated in Clause 4);
The essential requirements are specified in order to protect other users of the frequency spectrum from unacceptable interference. In addition, requirements are specified for the purposes of general safety;
2) optional requirements (indicated in Clause 5);
The optional requirements are specified relating to matters of general safety, minimisation of interference to other users of the radio spectrum and for the provision of protection of the MESs against electromagnetic interference from other systems.
If conformance of the equipment to Clause 5 is to be demonstrated, then the test should be in accordance with the relevant specification and verification procedure.
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