scope:

The present document provides ElectroMagnetic Compatibility (EMC) specifications for the standardization of Receive Only Mobile Earth Stations (ROMES). Specifications relating to emissions from the antenna port and emissions from the enclosure port of the ROMES (figure 1) are not included in the present document. Specifications for emissions from the antenna port and from the enclosure port of the ROMESs are included in ETS 300 487 [15].

The present document applies to ROMESs which operate in the Land Mobile Satellite Service (LMSS) space to earth bands, 1 525 MHz to 1 544 MHz and 1 555 MHz to 1 559 MHz, allocated by the ITU Radio Regulations [1]. The ROMESs operate as part of a satellite system providing one way data communications.

ROMESs can have several configurations, including:

- portable equipment;

- fixed equipment;

- a number of modules including a display/control interface to the user.

The present document specifies the applicable EMC tests, their method of measurement, the limits and the minimum performance criteria for ROMESs. The performance criteria used in the present document requires that the satellite communications system of which the ROMES is a part provides reliable delivery of data or messages.

The environment classification used in the present document refers to the environment classification used in Generic Standards EN 50081-1 [2] and EN 50082-1 [3], except the vehicular environment class which refers to ISO 7637-1 [11] and ISO 7637-2 [12].

The EMC requirements have been selected to ensure an adequate level of compatibility for apparatus in residential, commercial and light industrial environments. The levels however do not cover extreme cases which may occur in any location but with a low probability of occurrence.

The present document may not cover those cases where a potential source of interference which is producing individually repeated transient phenomena or a continuous phenomena is permanently present, e.g. a radar or broadcast site in the near vicinity. In such a case it may be necessary to use special protection applied to either the source of interference or the interfered part or both.

Compliance of radio equipment to the requirements of the present document does not signify compliance to any requirements related to spectrum management.

Compliance to the present document does not signify compliance to any safety requirements. However, it is the responsibility of the assessor of the equipment to ensure that any observation regarding the equipment becoming dangerous or unsafe as a result of the application of the tests of the present document should be recorded.

In addition to the technical specifications of the present document, there may be published in the Official Journal of the European Community references to other Harmonized EMC standards that apply to the products covered by the present document in their own right.

The present document is based on the considerations and guidance given in ETR 238 [16].