EN 50083-8:2002

1.1GeneralStandards of EN 50083 series deal with cable networks for television signals, sound signals and interactive services including equipment, systems and installations•for headend-reception, processing and distribution of sound and television signals and their associated data signals and•for processing, interfacing and transmitting all kinds of signals for interactive services using all applicable transmission media.All kinds of networks like•CATV-networks•MATV- and SMATV-networks•individual receiving networksand all kinds of equipment, systems and installations installed in such networks, are within this scopeThe extent of this standardisation work is from the antennas, special signal source inputs to the headend or other interface points to the network up to the system outlet or the terminal input, where no system outlet exists.The standardisation of any user terminals (i.e. tuners, receivers, decoders, multimedia terminals etc.) as well as of any coaxial and optical cables and accessories therefor is excluded.1.2Specific scope of this part 8This standard applies to the radiation characteristics and immunity to electromagnetic disturbance of cable networks for television signals, sound signals and interactive services and covers the frequency range 0,15 MHz to 3,0 GHz.This standard specifies EMC performance requirements and lays down the methods of measurement.Cable networks beyond the system outlets (e.g. the receiver lead, in simplest terms) which begin at the system outlet and end at the subscriber's terminal equipment shall comply with these recommendations provided that no other specific provisions apply.Requirements for the electromagnetic compatibility of receiver leads are laid down in EN 6096624, EN 6096625 and EN 6096626.To minimise the risk of interference to other radio services caused by possible radiation from a cable network and to limit the possible penetration of external signals which may interfere with the operation of a network, it is necessary not only to use equipment which satisfies the requirements of EN 50083-2 regarding limits of radiation and of immunity to external fields but also to ensure the integrity of all cable connections on each item of active or passive cable network equipment.Cable networks employing coaxial cables can be a source of interference to a wide range of services that utilise the radio frequency spectrum. These include not only the emergency services, safety of life, broadcasting, aeronautical and radio navigation services but also land mobile, amateur and cellular radio services.As existing and planned radio services need to be protected, radiation limits specified for cable networks should complied with.Additional protection for certain services may be required by national regulations.