IEC 60728-12-2001 电视和声音信号用电缆分配系统 第12部分：系统的电磁兼容性

标准号：IEC 60728-12-2001
中文标准名称：电视和声音信号用电缆分配系统 第12部分：系统的电磁兼容性
英文标准名称：Cabled distribution systems for television and sound signals - Part 12: Electromagnetic compatibility of systems
标准类型：K13
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：K13
国际标准分类号：33.060.40;33.100.20
适用范围：This part of IEC 60728 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 network outlets (e.g. receiver leads, in simplest terms) which begin at the network outlet and at the subscriber's terminal equipment shall comply with these recommendations provided that no other specific provisions apply. 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 requirement of IEC 60728-2 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 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 cabled networks should be complied with. Additional protection for certain services may be required by national regulations.