1、BSI Standards PublicationBS EN 50083-8:2013Cable networks for televisionsignals, sound signals andinteractive services -Part 8: Electromagnetic compatibility fornetworksBS EN 50083-8:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50083-8:2013.It supersedes
2、 BS EN 50083-8:2002+A11:2008 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EPL/100/4, Cable distribution equipment and systems.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not p
3、urport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 78430 9ICS 33.060.40; 33.100.01Compliance with a British Standard cannot confer immunity fromleg
4、al obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2014.Amendments issued since publicationDate Text affectedBS EN 50083-8:2013EUROPEAN STANDARD EN 50083-8 NORME EUROPENNE EUROPISCHE NORM December 2013 CENELEC European C
5、ommittee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide
6、for CENELEC members. Ref. No. EN 50083-8:2013 E ICS 33.060.40; 33.100.01 Supersedes EN 50083-8:2002 + A11:2008 English version Cable networks for television signals, sound signals and interactive services - Part 8: Electromagnetic compatibility for networks Rseaux de distribution par cbles pour sign
7、aux de tlvision, signaux de radiodiffusion sonore et services interactifs - Partie 8: Compatibilit lectromagntique des rseaux Kabelnetze fr Fernsehsignale, Tonsignale und interaktive Dienste - Teil 8: Elektromagnetische Vertrglichkeit von Kabelnetzen This European Standard was approved by CENELEC on
8、 2013-11-11. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may
9、 be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and no
10、tified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany
11、, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 50083-8:2013EN 50083-8:2013 2 Contents Page Foreword . 4 1 Scope 5 1.1 General .
12、5 1.2 Specific scope of EN 50083-8 . 5 2 Normative references 6 3 Terms, definitions, symbols and abbreviations . 6 3.1 Terms and definitions . 6 3.2 Symbols 9 3.3 Abbreviations . 9 4 Methods of measurement . 10 4.1 Basic principles . 10 4.2 Radiation from cable networks 10 4.2.1 General . 10 4.2.2
13、Field strength method . 11 4.2.3 Subcarrier measurement procedure . 12 4.2.4 GPS based leakage detection system . 13 4.3 Immunity of cable networks . 13 4.3.1 General . 13 4.3.2 Measurement procedure for interference caused by high-power local transmitter . 13 5 Performance requirements . 14 5.1 Gen
14、eral conditions 14 5.2 Radiation from cable networks and other sources 14 5.2.1 General . 14 5.2.2 Measurement of the total radiation 14 5.2.3 Measurement of narrowband radiation . 15 5.3 Immunity of cable networks . 16 Annex A (informative) A-deviations 18 A.1 United Kingdom . 18 A.1.1 Regulation 1
15、8 A.1.2 Principle . 18 A.1.3 Equipment 18 A.1.4 Measurement frequencies 18 A.1.5 Procedure . 19 A.1.6 Expression of results 19 A.1.7 Permitted limits 20 A.1.8 Interpretation . 20 A.1.9 Bibliography of A.1 22 A.2 United Kingdom . 22 A.2.1 Regulation 22 A.2.2 Principle . 22 A.2.3 Equipment 22 A.2.4 Me
16、asurement frequencies 22 A.2.5 Procedure . 23 A.2.6 Permitted limits 23 A.2.7 Interpretation . 24 A.2.8 Bibliography of A.2 24 A.3 Finland 25 A.4 Germany . 25 BS EN 50083-8:2013 3 EN 50083-8:2013 Annex B (informative) Frequency ranges of typical safety of life services 28 Annex C (informative) Inter
17、dependence between the maximum allowable field strength and the minimum signal level at system outlet 29 Annex D (informative) Measurements in other distances than the standard distance of 3 m 31 D.1 Measurement at a reduced distance below 3 m . 31 D.2 Measurement at measurement distances above 3 m
18、31 Annex E (informative) GPS based leakage detection system for cable networks . 32 E.1 General . 32 E.2 Automated data collection by driving through the HFC network . 32 E.3 Tagging of the signal 32 E.4 Post processing the collected data and visualisation of leakages 32 E.5 On site location of the
19、leak . 32 Bibliography 33 Figure A.1 Arrangement of test equipment for the measurement of radiation from complete systems 20 Table 1 Limits of total radiation . 15 Table 2 Narrowband radiation limits . 15 Table 3 Maximum expected field strength 16 Table 4 Required carrier-to-interference ratio 17 Ta
20、ble A.1 Radiation from complete systems: maximum permitted field strengths . 21 Table A.2 Distance correction factor . 22 Table A.3 Radiation from complete systems: maximum permitted field strengths . 24 Table A.4 Distance correction factor . 24 Table A.5 Protection of particular frequency ranges ac
21、cording to 3 of the Order 25 Table A.6 Field strength limit values at 3 m distance from line-bound telecommunications facilities and networks 27 Table B.1 Frequency ranges of typical safety of life services 28 BS EN 50083-8:2013EN 50083-8:2013 4 Foreword This document (EN 50083-8:2013) has been prep
22、ared by CLC/TC 209 “Cable networks for television signals, sound signals and interactive services“. The following dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-11-08 latest dat
23、e by which the national standards conflicting with this document have to be withdrawn (dow) 2016-11-08 This document supersedes EN 50083-8:2002 + A11:2008. EN 50083-8:2013 includes the following significant technical changes with respect to EN 50083-8:2002 and EN 50083-8/A11:2008. EN 50083-8 with it
24、s methods of measurement and EMC performance requirements is explicitly dedicated to “under operating conditions (in situ)” to ensure the ongoing EMC integrity of cable networks. The harmonized standard EN 50529-2 is dedicated for the provision of presumption of conformance to the EMC Directive. The
25、 first intermediate frequency range (1stIF range) for satellite signal transmission was extended to cover now frequencies from 950 MHz up to 3 500 MHz. The method of measurement and the requirements for in-band immunity were extended taking into account the new EMC environment due to the allocation
26、of broadband wireless services in the frequency band 790 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. The substitution method of measurement (power method) was deleted. EMC measurements belo
27、w 30 MHz were deleted New Annex D “Measurement in other distances than the standard distance of 3 m” New Annex E “GPS based leakage detection system for cable networks” Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/o
28、r CEN shall not be held responsible for identifying any or all such patent rights. BS EN 50083-8:2013 5 EN 50083-8:2013 1 Scope 1.1 General Standards of the EN 50083 and EN 60728 series deal with cable networks including equipment and associated methods of measurement for headend reception, processi
29、ng and distribution of television and sound signals and for processing, interfacing and transmitting all kinds of data signals for interactive services using all applicable transmission media. These signals are typically transmitted in networks by frequency-multiplexing techniques. This includes for
30、 instance regional and local broadband cable networks, extended satellite and terrestrial television distribution systems, individual satellite and terrestrial television receiving systems, and all kinds of equipment, systems and installations used in such cable networks, distribution and receiving
31、systems. The extent of this standardization work is from the antennas and/or special signal source inputs to the headend or other interface points to the network up to the terminal input of the customer premises equipment. The standardization work will consider coexistence with users of the RF spect
32、rum in wired and wireless transmission systems. The standardization of any user terminals (i.e. tuners, receivers, decoders, multimedia terminals etc.) as well as of any coaxial, balanced and optical cables and accessories thereof is excluded. 1.2 Specific scope of EN 50083-8 This European Standard
33、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 3,5 GHz. It should be noted that measurements below 30 MHz are not generally considered use
34、ful in the context of cable networks and are difficult to perform in practice. Application of the harmonized standard EN 50529-2 provides presumption of conformance to the EMC Directive. Therefore, to fulfil the requirements of EN 50529-2, it is necessary to use cable network equipment that satisfie
35、s the requirements of EN 50083-2 regarding limits of radiation and of immunity to external fields. This European Standard specifies methods of measurement and EMC performance requirements under operating conditions (in situ) to ensure the ongoing EMC integrity of cable networks. Cable networks beyon
36、d the system outlets (e.g. the receiver lead, in simplest terms) which begin at the system outlet and end at the input to the subscribers terminal equipment are not covered by the standard EN 50083-8. Requirements for the electromagnetic compatibility of receiver leads are laid down in EN 60966-2-4,
37、 EN 60966-2-5 and EN 60966-2-6. Cable networks and a wide range of radio services have to coexist. These include for example the emergency services, safety of life, broadcasting, aeronautical, radio navigation services and also land mobile, amateur and cellular radio services. Frequency ranges of ty
38、pical safety of life services are listed in Annex B. Additional protection for certain services may be required by national regulations. BS EN 50083-8:2013EN 50083-8:2013 6 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indisp
39、ensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50083 (all parts), Cable networks for television signals, sound signals and interactive services EN 50083-2,
40、 Cable networks for television signals, sound signals and interactive services Part 2: Electromagnetic compatibility for equipment EN 50117 (all parts), Coaxial cables EN 50529-2, EMC Network Standard Part 2: Wire-line telecommunications networks using coaxial cables EN 55016-1-1, Specification for
41、radio disturbance and immunity measuring apparatus and methods Part 1-1: Radio disturbance and immunity measuring apparatus Measuring apparatus (CISPR 16-1-1) EN 55016-1-4, Specification for radio disturbance and immunity measuring apparatus and methods Part 1-4: Radio disturbance and immunity measu
42、ring apparatus Antennas and test sites for radiated disturbance measurements (CISPR 16-1-4) EN 60728 (all parts), Cable networks for television signals, sound signals and interactive services (IEC 60728, all parts) EN 60728-1, Cable networks for television signals, sound signals and interactive serv
43、ices Part 1: System performance of forward paths (IEC 60728-1) IEC 60050-161, International Electrotechnical Vocabulary Chapter 161: Electromagnetic compatibility 3 Terms, definitions, symbols and abbreviations 3.1 Terms and definitions For the purposes of this document, the terms and definitions gi
44、ven in IEC 60050-161 and the following apply. NOTE The most important definitions of IEC 60050-161 are repeated hereafter with the IEV-numbering given in brackets. In addition, some more specific definitions, used in this European Standard, are listed. 3.1.1 building penetration loss ability of buil
45、dings, in which networks for distribution of television and sound are located, to attenuate the influence of electromagnetic fields from outside the buildings or to suppress the radiation of electromagnetic fields from inside the buildings 3.1.2 carrier-to-interference ratio minimum level difference
46、 measured at the output of an active equipment or at any other interface within the network between the wanted signal and intermodulation products of the wanted signal and/or unwanted signals generated due to non-linearities, harmonics generated by an unwanted signal, unwanted signals that have pene
47、trated into the operating frequency range, unwanted signals that have been converted to the frequency range to be protected (operating frequency range) BS EN 50083-8:2013 7 EN 50083-8:2013 3.1.3 degradation (of performance) undesired departure in the operational performance of any device, equipment
48、or system from its intended performance Note 1 to entry: The term “degradation“ can apply to temporary or permanent failure. SOURCE: IEV 161-01-19 3.1.4 disturbance level level of an electromagnetic disturbance at a given location, which results from all contributing (interference) sources 3.1.5 ele
49、ctromagnetic disturbance any electromagnetic phenomenon which may degrade the performance of a device, equipment or system, or adversely affect living or inert matter Note 1 to entry: An electromagnetic disturbance may be an electromagnetic noise, an unwanted signal or a change in the propagation medium itself. SOURCE: IEV 161-01-05 3.1.6 electromagnetic interference EMI degradation of the performance of an equipment, transmission channel or system caused by an electromagn
