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1、BRITISH STANDARD BS EN 60728-4:2008 Cable networks for television signals, sound signals and interactive services Part 4: Passive wideband equipment for coaxial cable networks ICS 33.060.40; 33.170 ? Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy L
2、icensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:13:37 MDTNo reproduction or networking permitted without license from IHS -,-,- BS EN 60728-4:2008 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2008 BSI 2008 ISBN 978 0 580
3、 56972 2 National foreword This British Standard is the UK implementation of EN 60728-4:2008. It is identical to IEC 60728-4:2007. It supersedes BS EN 50083-4:1999 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee EPL/100, Audio, video and multimedia sy
4、stems and equipment. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard canno
5、t confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:13:37 MDTNo reproduction or networking
6、permitted without license from IHS -,-,- EUROPEAN STANDARD EN 60728-4 NORME EUROPENNE EUROPISCHE NORM May 2008 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de
7、Stassart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60728-4:2008 E ICS 33.060.40; 33.170 Supersedes EN 50083-4:1998 English version Cable networks for television signals, sound signals and interacti
8、ve services - Part 4: Passive wideband equipment for coaxial cable networks (IEC 60728-4:2007) Rseaux de distribution par cbles pour signaux de tlvision, signaux de radiodiffusion sonore et services interactifs - Partie 4: Equipements large bande passifs relatifs aux rseaux cbls coaxiaux (CEI 60728-
9、4:2007) Kabelnetze fr Fernsehsignale, Tonsignale und interaktive Dienste - Teil 4: Passive Breitbandgerte fr koaxiale Kabelnetze (IEC 60728-4:2007) This European Standard was approved by CENELEC on 2008-04-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipul
10、ate 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 be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard
11、 exists in two official versions (English and German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electro
12、technical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerla
13、nd and the United Kingdom. Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:13:37 MDTNo reproduction or networking permitted without license from IHS -,-,- Foreword The text of document 100/
14、1243/FDIS, future edition 3 of IEC 60728-4, prepared by technical area 5, Cable networks for television signals, sound signals and interactive services, of IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN
15、60728-4 on 2008-04-01. This European Standard supersedes EN 50083-4:1998 + corrigendum January 1999. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2009-01-01 latest date by
16、which the national standards conflicting with the EN have to be withdrawn (dow) 2011-04-01 For this European Standard the informative Annex B of IEC 60728-4:2007 shall be disregarded and has been replaced by the normative Annex ZB, Special national conditions; and the informative Annex ZC, A-deviati
17、ons. Annexes ZA, ZB and ZC have been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60728-4:2007 was approved by CENELEC as a European Standard without any modification. _ BS EN 60728-4:2008 2 Copyright British Standards Institution Provided by IHS under license wi
18、th BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:13:37 MDTNo reproduction or networking permitted without license from IHS -,-,- CONTENTS INTRODUCTION.5 1 Scope.6 2 Normative references .6 3 Terms, definitions, symbols and abbreviations7 3.1 Terms and definition
19、s7 3.2 Symbols 11 3.3 Abbreviations 12 4 Methods of measurement .12 4.1 Attenuation12 4.1.1 Test equipment12 4.1.2 Measurement procedure12 4.1.3 Presentation of the results.13 4.2 Isolation 13 4.2.1 Definition.13 4.2.2 Test equipment13 4.2.3 Measurement procedure13 4.2.4 Presentation of the results.
20、14 4.3 Through-loss .14 4.3.1 Definition.14 4.3.2 Test equipment14 4.3.3 Measurement procedure14 4.3.4 Presentation of the results.14 4.4 Group delay variation 14 4.4.1 Definition.14 4.4.2 Test equipment14 4.4.3 Method of measurement 15 4.4.4 Presentation of the result.15 4.5 Amplitude frequency res
21、ponse 15 4.6 Return loss15 4.7 Hum modulation of carrier .15 4.7.1 Definition.15 4.7.2 Description of the method of measurement16 4.7.3 Measuring procedure.17 4.7.4 Calculating the hum-modulation ratio.18 4.7.5 Presentation of the results.19 4.8 Two-carrier intermodulation measurements for second- a
22、nd third-order products 19 5 Performance requirements and recommendations 20 5.1 General performance requirements and recommendations 20 5.1.1 Safety20 5.1.2 Electromagnetic compatibility (EMC) .20 5.1.3 Environmental .20 5.1.4 Marking .21 5.1.5 Impedance.21 BS EN 60728-4:2008 3 Copyright British St
23、andards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:13:37 MDTNo reproduction or networking permitted without license from IHS -,-,- 5.1.6 Degradation of performance caused by overvoltages.21 5.2 Performance requir
24、ements and recommendations for receiver lead.21 5.3 Performance requirements and recommendations for system outlets.21 5.3.1 Safety21 5.3.2 Quality grading 21 5.3.3 Mechanical requirements.22 5.3.4 Electrical parameters and requirements.22 5.4 Performance requirements and recommendations for splitte
25、rs and taps 25 5.4.1 Description 25 5.4.2 Mechanical requirements for connectors25 5.4.3 Electrical parameters and requirements.25 5.5 Performance requirements and recommendations for all other passive equipment .27 5.5.1 Description 27 5.5.2 Mechanical requirements for connectors27 5.5.3 Electrical
26、 parameters and requirements.27 Bibliography 31 Annex A (informative) Measurement errors which occur due to mismatched equipment .29 Annex B (informative) Differences in some countries .30 Figure 1 Test set-up for the measurement of attenuation .13 Figure 2 Test set-up for the measurement of isolati
27、on13 Figure 3 Measurement of through-loss.14 Figure 4 Carrier/hum ratio15 Figure 5 Test set-up for power injectors.16 Figure 6 Test set-up for passive equipment, excluding power injectors 17 Figure 7 Oscilloscope display 17 Figure 8 Harmonic/Intermodulation test circuit .19 Figure 9 Types of losses
28、of system outlets.24 Figure A.1 Error concerning return loss measurement29 Figure A.2 Maximum ripple 29 Table 1 Return loss of system outlets 22 Table 2 Return loss of looped-through system outlets23 Table 3 Maximum return path signal level derived from maximum allowed intermodulation distortion lev
29、el in the downstream frequency band .25 Table 4 Return loss of splitters and taps 25 Table 5 Isolation of splitters.26 Table 6 Return loss for all other passive equipment.27 BS EN 60728-4:2008 4 Annex ZB (normative) Special national conditions. .34 corresponding European publications. .32 Annex ZA (
30、normative) Normative references to international publications with their Annex ZC (informative) A-deviations 35 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:13:37 MDTNo reproduction or n
31、etworking permitted without license from IHS -,-,- INTRODUCTION Standards of the IEC 60728 series deal with cable networks including equipment and associated methods of measurement for headend reception, processing and distribution of television signals, sound signals and their associated data signa
32、ls and for processing, interfacing and transmitting all kinds of signals for interactive services using all applicable transmission media. This includes CATV1-networks; MATV-networks and SMATV-networks; individual receiving networks; and all kinds of equipment, systems and installations installed in
33、 such networks. 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. The standardization of any user terminals (i.e., tuners, receivers, decoders, multimedia terminals, etc.)
34、 as well as of any coaxial, balanced and optical cables and accessories thereof is excluded. 1 This word encompasses the HFC networks used nowadays to provide telecommunications services, voice, data, audio and video both broadcast and narrowcast. BS EN 60728-4:2008 5 Copyright British Standards Ins
35、titution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:13:37 MDTNo reproduction or networking permitted without license from IHS -,-,- CABLE NETWORKS FOR TELEVISION SIGNALS, SOUND SIGNALS AND INTERACTIVE SERVICES Part 4: Passiv
36、e wideband equipment for coaxial cable networks 1 Scope This part of IEC 60728 applies to system outlets, splitters and taps, passive single or multiple port equipment comprising filters, attenuators, equalizers, galvanic isolators, power injectors, cable splices, terminating resistors and transfer
37、points, but excluding coaxial cables and receiver leads (see 5.2). This standard covers the frequency range 5 MHz to 3 000 MHz; identifies performance requirements for certain parameters; lays down data publication requirements for certain parameters; stipulates methods of measurements; introduces m
38、inimum requirements defining quality grades. There are three grades for all passive equipment except system outlets where there is only one. Different networks require the same performance and, when integrating networks, upgrading will be avoided. Practical experience has shown that these three grad
39、es meet most of the technical requirements necessary for supplying a minimum signal quality to the subscribers. This classification should not be considered as a requirement but as information for users and manufacturers on the minimum quality criteria of the material required to install networks of
40、 different sizes. The system operator should select appropriate material to meet the minimum signal quality at the subscribers outlet and to optimize cost/performance, taking into account the size of the network and local circumstances. All requirements and published data should be understood as gua
41、ranteed values within the specified frequency range and in well-matched conditions. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of th
42、e referenced document (including any amendments) applies. IEC 60068 (all parts), Environmental testing IEC 60417, Graphical symbols for use on equipment NOTE IEC 60417 can be consulted on the IEC website. IEC 60529, Degrees of protection provided by enclosures (IP Code) BS EN 60728-4:2008 6 Copyrigh
43、t British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:13:37 MDTNo reproduction or networking permitted without license from IHS -,-,- IEC 60617, Graphical symbols for diagrams IEC 60728 (all parts), Cabl
44、e networks for television signals, sound signals and interactive services NOTE The title of some of the parts of the IEC 60728 series will be changed when a new edition is published. IEC 60966-1, Radio frequency and coaxial cable assemblies Part 1: Generic specification General requirements and test
45、 methods IEC 60966-2-4, Radio frequency and coaxial cable assemblies Part 2-4: Detail specification for cable assemblies for radio and TV receivers Frequency range 0 to 3 000 MHz, IEC 61169-2 connectors IEC 60966-2-5, Radio frequency and coaxial cable assemblies Part 2-5: Detail specification for ca
46、ble assemblies for radio and TV receivers Frequency range 0 to 1 000 MHz, IEC 61169-2 connectors IEC 60966-2-6, Radio frequency and coaxial cable assemblies Part 2-6: Detail specification for cable assemblies for radio and TV receivers Frequency range 0 to 3 000 MHz, IEC 61169-24 connectors IEC 6100
47、0-4-5, Electromagnetic compatibility (EMC) Part 4-5: Testing and measurement techniques Surge immunity test IEC 61000-6-1, Electromagnetic compatibility (EMC) Part 6-1: Generic standards Immunity for residential, commercial and light-industrial environments IEC 61169-1, Radio-frequency connectors Part 1: Generic specification General require- ments and measuring methods IEC 61169-2, Radio-frequency connectors Part 2: Sectional specification Radio-frequency coaxial connectors of type 9,52 IEC 61169-24, Radio-frequency connectors Part 24: Sectional specification Radio- frequency coaxial
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