1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationCable networks for television signals, sound signals and interactive servicesPart 13: Optical systems for broadcast signal transmissionsBS EN 60728-13:2010National forewordThis B
2、ritish Standard is the UK implementation of EN 60728-13:2010. It isidentical to IEC 60728-13:2010.The UK participation in its preparation was entrusted to Technical CommitteeEPL/100, Audio, video and multimedia systems and equipment.A list of organizations represented on this committee can be obtain
3、ed onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2010ISBN 978 0 580 63774 2ICS 33.060.40; 33.160.01; 33.180.01Compliance with a British Standard cannot confer immunity fromlega
4、l obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 3 Ju 2010.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60728-13:2010ly1EUROPEAN STANDARD EN 60728-13 NORME EUROPENNE EUROPISCHE NORM February
5、2010 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels 2010 CENELEC - All rights of exploitation in any form and by any means reserv
6、ed worldwide for CENELEC members. Ref. No. EN 60728-13:2010 E ICS 33.160.01; 33.180.01 English version Cable networks for television signals, sound signals and interactive services - Part 13: Optical systems for broadcast signal transmissions (IEC 60728-13:2010) Rseaux de distribution par cbles dest
7、ins aux signaux de tlvision, de radiodiffusion sonore et aux services interactifs - Partie 13 : Systmes optiques pour transmission de signaux de radiodiffusions (CEI 60728-13:2010) Kabelnetze fr Fernsehsignale, Tonsignale und interaktive Dienste - Teil 13: Optische Anlagen zur bertragung von Rundfun
8、ksignalen (IEC 60728-13:2010) This European Standard was approved by CENELEC on 2010-02-01. 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-d
9、ate 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 exists in three official versions (English, French, German). A version in any other language made by translation unde
10、r 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 electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finl
11、and, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 60728-13:2010EN 60728-13:2010 - 2 - Foreword The text of document 100
12、/1623/FDIS, future edition 1 of IEC 60728-13, prepared by 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 60728-13 on 2010-02-01. Attention is drawn to the possibility that some of the elements of this do
13、cument may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. 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 endorsem
14、ent (dop) 2010-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-02-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60728-13:2010 was approved by CENELEC as a European Standard without any
15、modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60068 NOTE Harmonized in EN 60068 series (not modified). IEC 60728-1-2 NOTE Harmonized as EN 60728-1-2:2009 (not modified). IEC 60728-3 NOTE Harmonized as EN 60728-3. IEC 60
16、728-5 NOTE Harmonized as EN 60728-5. IEC 60728-10 NOTE Harmonized as EN 60728-10. IEC 60728-11 NOTE Harmonized as EN 60728-11. IEC 60875-1 NOTE Harmonized as EN 60875-1. IEC 61280-1-1 NOTE Harmonized as EN 61280-1-1. IEC 61280-1-3 NOTE Harmonized as EN 61280-1-3. IEC 61280-2-9 NOTE Harmonized as EN
17、61280-2-9. IEC 61281-1 NOTE Harmonized as EN 61281-1. IEC 61290-1-2 NOTE Harmonized as EN 61290-1-2. IEC 61290-1-3 NOTE Harmonized as EN 61290-1-3. BS EN 60728-13:2010- 3 - EN 60728-13:2010 IEC 61300-3-2 NOTE Harmonized as EN 61300-3-2. IEC 61754-13 NOTE Harmonized as EN 61754-13. _ BS EN 60728-13:2
18、010EN 60728-13:2010 - 4 - Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undate
19、d references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60068-1 1988 Environmental testing -
20、 Part 1: General and guidance EN 60068-11) 1994 IEC 60728-1 2007 Cable networks for television signals, sound signals and interactive services - Part 1: System performance of forward paths EN 60728-1 2008 IEC 60728-6 2003 Cable networks for television signals, sound signals and interactive services
21、- Part 6: Optical equipment EN 60728-6 2003 IEC/TR 60728-6-1 2006 Cable networks for television signals, sound signals and interactive services - Part 6-1: System guidelines for analogue optical transmission systems - - IEC 60825-1 - Safety of laser products - Part 1: Equipment classification and re
22、quirements EN 60825-1 - IEC 60825-2 - Safety of laser products - Part 2: Safety of optical fibre communication systems (OFCS) EN 60825-2 - IEC 60825-12 - Safety of laser products - Part 12: Safety of free space optical communication systems used for transmission of information EN 60825-12 - IEC 6129
23、1-1 2006 Optical amplifiers - Part 1: Generic specification EN 61291-1 2006 IEC 61755-1 2005 Fibre optic connector optical interfaces - Part 1: Optical interfaces for single mode non-dispersion shifted fibres - General and guidance EN 61755-1 + corr. December 2006 2006 IEC/TR 61930 1998 Fibre optic
24、graphical symbology - - IEC/TR 61931 1998 Fibre optic - Terminology - - ITU-T Recommendation G.692 - Optical interfaces for multichannel systems with optical amplifiers - - ITU-T Recommendation G.694.2 - Spectral grids for WDM applications: CWDM wavelength grid - - 1) EN 60068-1 includes A1 to IEC 6
25、0068-1 + corr. October . BS EN 60728-13:2010 2 60728-13 IEC:2010(E) CONTENTS INTRODUCTION.7 1 Scope.8 2 Normative references .8 3 Terms, definitions, symbols and abbreviations9 3.1 Terms and definitions 9 3.2 Symbols 15 3.3 Abbreviations 16 4 Optical system reference model17 5 Preparation of measure
26、ment 19 5.1 Environmental conditions 19 5.1.1 Standard measurement conditions.19 5.1.2 Temperature and humidity .20 5.1.3 Setting up the measuring setup and system under test 20 5.1.4 AGC operation.20 5.1.5 Impedance matching between pieces of equipment .20 5.1.6 Standard operating condition .20 5.1
27、.7 Standard signal and measuring equipment 20 5.2 Accuracy of measuring equipment.21 5.3 Source power 21 6 Methods of measurement .21 6.1 Measuring points and items.21 6.1.1 General .21 6.1.2 Measuring points .21 6.1.3 Measured parameters21 6.2 Optical power 22 6.2.1 General .22 6.2.2 Measuring setu
28、p22 6.2.3 Measuring method.23 6.2.4 Precaution for measurement23 6.2.5 Presentation of the results.24 6.3 Carrier level and carrier-to-noise ratio .24 6.3.1 General .24 6.3.2 Measuring setup24 6.3.3 Measuring conditions.24 6.3.4 Measuring method for analogue signals (AM-VSB) 24 6.3.5 Measuring metho
29、d for digitally modulated signals (64 QAM, OFDM) 25 6.3.6 Precautions for measurement 25 6.3.7 Presentation of the results.25 6.4 Carrier-to-noise ratio defined by optical signal.25 6.4.1 General .25 6.4.2 Measuring setup26 6.4.3 Measuring conditions.27 6.4.4 System RIN measuring method27 6.4.5 C/N
30、calculation based on RIN value.29 6.4.6 Component RIN calculation .29 BS EN 60728-13:201060728-13 IEC:2010(E) 3 6.5 Optical modulation index .31 6.6 Carrier-to-crosstalk ratio (CCR).31 6.6.1 General .31 6.6.2 Equipment .31 6.6.3 General measurements .32 6.6.4 Procedure32 6.6.5 Potential sources of e
31、rror 33 6.6.6 Presentation of the results.33 7 Specification of optical system for broadcast signal transmission .33 7.1 Analogue and digital broadcast system over optical network .33 7.2 International TV systems .34 7.3 Relationship between RIN and C/N35 7.4 Optical wavelength 36 7.5 Frequency of s
32、ource signal .36 7.6 Optical system specification for broadcast signal transmission 36 7.7 C/N ratio specification for in-house and in-building wirings 37 7.8 Crosstalk due to optical fibre non-linearity.39 7.9 Single frequency interference level due to fibre non-linearity.40 7.10 Environmental cond
33、itions 40 Annex A (informative) Actual service systems and design considerations 41 Annex B (informative) Optical system overview56 Annex C (informative) Optical system degradations .60 Annex D (normative) Measurement of parameters (R, Id0, Ieqand G) required for RIN calculation 66 Bibliography68 Fi
34、gure 1 Optical system reference model for one-fibre solution 18 Figure 2 Optical system reference model for two-fibres solution.18 Figure 3 Example of PON triplexer.19 Figure 4 Performance specified points of the optical system 19 Figure 5 Typical optical video distribution system.21 Figure 6 Measur
35、ement of optical power using a WDM coupler .23 Figure 7 Measurement of optical power using a wavelength filter.23 Figure 8 Arrangement of test equipment for carrier-to-noise ratio measurement.24 Figure 9 Measuring points in the optical cable TV network .26 Figure 10 RIN measurement setup.27 Figure 1
36、1 Arrangement of test equipment for measuring other services crosstalk.32 Figure 12 Performance allocation and measuring points 33 Figure 13 Section of C/N ratio specification (45 dB) for in-house wiring (specified for electrical signals)38 Figure 14 Section of C/N ratio specification for in-house w
37、iring (specified for optical signals).39 Figure A.1 Example of a multi-channel service system of one million terminals 41 Figure A.2 Example of a multi-channel service system of 2 000 terminals 42 Figure A.3 Example of re-transmission service system of 72 terminals.43 Figure A.4 Example of re-transm
38、ission service system of 144 terminals.43 BS EN 60728-13:2010 4 60728-13 IEC:2010(E) Figure A.5 Model No.1 of a system performance calculation 47 Figure A.6 Model No.2 of a system performance calculation 48 Figure A.7 Model No.3 a of system performance calculation 49 Figure A.8 Model No.4 of a syste
39、m performance calculation 50 Figure A.9 Model No.5 of a system performance calculation 51 Figure A.10 Model No.6 of a system performance calculation 52 Figure A.11 Model No.7 of system performance calculation .53 Figure B.1 Topology of optical system .56 Figure B.2 Network composition.57 Figure B.3
40、Example of SS system 58 Figure B.4 Example of ADS system58 Figure B.5 Example of PON system .59 Figure C.1 Reflection model.60 Figure C.2 Degradation factors of optical transmission system.61 Figure C.3 SBS generation image 61 Figure C.4 Interference between two wavelengths .63 Figure C.5 Simulation
41、 of SRS(OLT transmission power versus D/U) 63 Figure C.6 Simulation of SRS (D/U in arbitrary unit versus fibre length) .64 Figure C.7 Fibre length of the first peak of SRS D/U versus frequency.64 Figure C.8 GE-PON idle pattern spectrum (IEEE 802.3ah 1000Base-PX) (62,5 MHz = 1 250 Mbps/20 bit) 65 Fig
42、ure D.1 Measurement of gain (G) 67 Table 1 Level of RF signals12 Table 2 Measuring instruments 20 Table 3 Measuring points and measured parameters .22 Table 4 Parameters used for the calculation of carrier-to-noise ratio (C/N).30 Table 5 Minimum C/N requirements in operation34 Table 6 Minimum RF sig
43、nal-to-noise ratio requirements in operation34 Table 7 Types of broadcast services36 Table 8 Type of service and minimum operational RIN values36 Table 9 Optical system specification 37 Table 10 Section of C/N ratio specification for in-house/in-building wiring 38 Table 11 Interference level due to
44、fibre non-linearity40 Table 12 Environmental conditions 40 Table A.1 Operating conditions of a multi-channel service system .42 Table A.2 Operating conditions of re-transmission service system .43 Table A.3 Basic system parameters for multi-channel and re-transmission service systems 45 Table A.4 Ve
45、rified optimum operation 54 Table B.1 PON systems and main parameters .59 Table C.1 Disturbance parameter of Raman crosstalk62 BS EN 60728-13:201060728-13 IEC:2010(E) 7 INTRODUCTION Standards of the IEC 60728 series deal with cable networks including equipment and associated methods of measurement f
46、or headend reception, processing and distribution of television signals, sound signals and their associated data signals and for processing, interfacing and transmitting all kinds of signals for interactive services using all applicable transmission media. This includes CATV01-networks; MATV-network
47、s and SMATV-networks; individual receiving networks; and all kinds of equipment, systems and installations installed in 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 te
48、rminal input. 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 This word encompasses the HFC (Hybrid Fibre Cable) networks used nowadays to provide t
49、elecommunications services, voice, data, audio and video both broadcast and narrowcast.BS EN 60728-13:2010 8 60728-13 IEC:2010(E) CABLE NETWORKS FOR TELEVISION SIGNALS, SOUND SIGNALS AND INTERACTIVE SERVICES Part 13: Optical systems for broadcast signal transmissions 1 Scope This part of IEC 60728 is applicable to optical transmission system for broadcast signal tr
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