IEC 60728-2:20 18（E）适用于IEC 60728-3、IEC 60728-4、IEC 60728-5和IEC 60728-6中涉及的用于接收、处理和分发电视、声音和交互式多媒体信号的EM有源设备（有源和无源设备）的辐射特性和电磁干扰抗扰度。 本文档涵盖以下频率范围: -注入电源的干扰电压:150kHz至30MHz； -来自有源设备的辐射:5MHz至25GHz； -有源设备的抗扰度:150kHz至25GHz； -无源设备的屏蔽效能:5 MHz至3.5 GHz。 本文件规定了最大允许辐射、最小抗扰度和最小筛选有效性的要求，并描述了一致性测试的测试方法。 这第三版取消并取代了2010年出版的第二版。本版构成技术修订版。 与上一版相比，此版本包括以下重大技术变更: a)频率扩展: a.1)由于市场需求，传统有线网络设备的频率上限由862 MHz扩展至1 000 MHz。 a.2)用于卫星信号传输的第一中频范围(第一IF范围)被扩展到现在覆盖从950 MHz到3 500 MHz的频率。 a.3）在950 MHz至1 000 MHz重叠频率范围内的测量方法和EMC要求是根据被测相关设备的频率上限1 000 MHz和频率下限950 MHz进行分配的。 b)800 MHz频段的新EMC环境: b.1)欧盟委员会已要求CENELEC和ETSI起草设备抗扰度要求，以防止790 MHz至862 MHz频段新无线服务的干扰。b.2)成立了CENELEC/ETSI联合工作组“数字红利”，以描述新的EMC环境并就适当的测试方法和限制提出建议。 b.3)IEC 60728-2是规定有源和无源电缆网络设备抗扰度要求的文件。 b.4)由于频段694MHz至862MHz的宽带无线服务的分配，考虑到这种新的EMC环境，测量方法和带内抗扰度的要求得到了扩展。因此，规定了该频率范围内的模拟信号和数字信号的带内抗扰度极限。 b.5)因此，建议在电缆网络和无线网络共存的情况下，仅应在694MHz至862MHz的频率范围内使用数字调制信号的传输。b.6)对于无源设备，标准中保留了A类和B类规格，但添加了注释，建议在新网络的规划和实施中仅应使用A类设备。 c)在新的4.9中合并了各种室内天线的测量方法。 d)在文件的末尾添加了参考书目，例如参考CEPT报告30“确定欧洲联盟数字红利的790-862 MHz的共同和最小(最小限制)技术条件”。

IEC 60728-2:2018(E) applies to the radiation characteristics and immunity to electromagnetic disturbance of EM active equipment (active and passive equipment) for the reception, processing and distribution of television, sound and interactive multimedia signals as dealt with in IEC 60728-3, IEC 60728-4, IEC 60728-5 and IEC 60728-6.
This document covers the following frequency ranges:
- disturbance voltage injected into the mains: 150 kHz to 30 MHz;
- radiation from active equipment: 5 MHz to 25 GHz;
- immunity of active equipment: 150 kHz to 25 GHz;
- screening effectiveness of passive equipment: 5 MHz to 3,5 GHz.
This document specifies requirements for maximum allowed radiation, minimum immunity and minimum screening effectiveness and describes test methods for conformance testing.
This third edition cancels and replaces the second edition published in 2010. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Frequency extensions:
a.1) The upper frequency limit of conventional cable network equipment was extended from 862 MHz to 1 000 MHz due to market demands.
a.2) The first intermediate frequency range (1st IF range) for satellite signal transmission was extended to cover now frequencies from 950 MHz up to 3 500 MHz.
a.3) The methods of measurement and the EMC requirements in the overlapping frequency range from 950 MHz to 1 000 MHz were allocated in relation to the upper frequency limit, 1 000 MHz, and the lower frequency limit, 950 MHz, of the relevant equipment under test.
b) New EMC environment in the 800 MHz band:
b.1) The European Commission has requested CENELEC and ETSI to draft immunity requirements for equipment, to protect against disturbance from the new wireless service in the 790 MHz to 862 MHz band.
b.2) A CENELEC/ETSI Joint Working Group “Digital Dividend” was formed to describe the new EMC environment and to advise on appropriate test methods and limits.
b.3) IEC 60728-2 is the document specifying immunity requirements for active and passive cable network equipment.
b.4) The method of measurement and the requirements for in-band immunity were extended taking into account this new EMC environment due to the allocation of broadband wireless services in the frequency band 694 MHz to 862 MHz. As a consequence, the limits of in-band immunity were specified for analogue and additionally for digital signals in this frequency range.
b.5) Consequently it is recommended, that, where cable networks and wireless networks coexist, only the transmission of digitally modulated signals should be used in the frequency range 694 MHz to 862 MHz.
b.6) For passive equipment, Class A and Class B specifications were kept in the standard but a note was added recommending that only Class A equipment should be used in the planning and implementation of new networks.
c) The methods of measurement for all kinds of indoor antennas were combined in the new 4.9.
d) A Bibliography has been added at the end of the document referencing, for example, CEPT Report 30 on “The identification of common and minimal (least restrictive) technical conditions for 790-862 MHz for the digital dividend in the European Union”.