ISO IEC 15018 AMD 1-2009 Information technology - Generic cabling for homes Amendment 1《信息技术 家庭通用布线 修改件1》.pdf
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1、 ISO/IEC 15018 Edition 1.0 2009-04 INTERNATIONAL STANDARD Information technology Generic cabling for homes ISO/IEC 15018:2009/A1:2009(E) AMENDMENT 1 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 ISO/IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this pu
2、blication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IECs member National Committee in the country of the requester. If you have any questions about ISO/IEC copyright or h
3、ave an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. IEC Central Office 3, rue de Varemb CH-1211 Geneva 20 Switzerland Email: inmailiec.ch Web: www.iec.ch About the IEC The Internat
4、ional Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please ma
5、ke sure that you have the latest edition, a corrigenda or an amendment might have been published. Catalogue of IEC publications: www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,). It also gives information on
6、projects, withdrawn and replaced publications. IEC Just Published: www.iec.ch/online_news/justpub Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available on-line and also by email. Electropedia: www.electropedia.org The worlds leadin
7、g online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical Vocabulary online. Customer Service Centre: www.iec.ch/webstore/custserv If
8、you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service Centre FAQ or contact us: Email: csciec.ch Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 ISO/IEC 15018 Edition 1.0 2009-04 INTERNATIONAL STANDARD Information technology Generic cabling
9、for homes INTERNATIONAL ELECTROTECHNICAL COMMISSION C ICS 35.200 PRICE CODE ISBN 2-8318-1036-9 AMENDMENT 1 2 15018 Amend. 1 ISO/IEC:2009(E) FOREWORD Amendment 1 to International Standard ISO/IEC 15018 was prepared by subcommittee 25: Interconnection of information technology equipment, of ISO/IEC jo
10、int technical committee 1: Information technology. _ 2 Normative references Add the following new reference: IEC 60728-1:2007, Cable networks for television signals, sound signals and interactive services Part 1: System performance for forward paths 3 Terms, definitions and abbreviations 3.1 Terms a
11、nd definitions Add, after 3.1.39, the following new terms and definitions: 3.1.40 balun device to provide impedance transformation between balanced and unbalanced components 3.1.41 external network interface ENI connexion device between external network and network access cabling. NOTE For example,
12、equipment comprising HNI, and baluns where applicable, complies with this definition. 3.1.42 home network interface HNI interface for access to the network for distribution of television signal, sound signals and interactive services inside a home (single dwelling) 3.1.43 system outlet SO device for
13、 interconnecting a subscriber feeder and a receiver lead IEC 60728-1, 3.1.90 3.2 Abbreviations Add the following abbreviations in alphabetical order: HF High frequency UHF Ultra-high frequency VHF Very high frequency 15018 Amend. 1 ISO/IEC:2009(E) 3 Add, after Annex D, the following new Annex E: Ann
14、ex E (informative) Reference implementation of TV and radio applications Usage of baluns E.1 Types and locations of baluns E.1.1 General The connection of a BCT-B channel to equipment that has a 75 coaxial connection requires the use of a balun. Also the connection of a balanced BCT-B channel to a C
15、ATV network or any feeding coaxial system requires the use of a balun at the HNI (Home Network interface). Figures E.1 through to E.4 illustrate the location where a balun can be found in a home (single dwelling). NOTE By the use of baluns it is possible to run BCT applications via ICT permanent lin
16、ks in accordance with the manufacturers instructions. E.1.2 Baluns at the external network interface and baluns at the equipment interface toward the PHD BCT-B permanent link PHD Balanced splitter ENI HNI Balun Figure E.1 Balun at the ENI (External Network Interface) Figure E.1 illustrates a configu
17、ration where the home is fed with a coaxial system. A balun is used to connect this coaxial system to balanced cabling including the Primary Home Distributor (PHD). It is assumed that in this case the balun belongs to the application dependent equipment and therefore meets the application specific r
18、equirements to provide the home with signals complying with IEC 60728 (see Figure E.5 below). If the balun cannot cover the frequency range of forward (47 MHz to 862 MHz) and return path (5 MHz to 65 MHz), two types of baluns should be used, each one in the appropriate path. 4 15018 Amend. 1 ISO/IEC
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