IEC_60728-7-1-2003.pdf

INTERNATIONALSTANDARDIEC60728-7-1First edition2003-10Cable networks for television signals,sound signals and interactive services Part 7-1:Hybrid Fibre Coax Outside PlantStatus Monitoring Physical(PHY)Layer SpecificationReference numberIEC 60728-7-1:2003(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editions The IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2.Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to this publication,including its validity,is available in the IEC Catalogue of publications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication,as well as the list of publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publications The on-line catalogue on the IEC web site(www.iec.ch/searchpub)enables you to search by a variety of criteria including text searches,technical committees and date of publication.On-line information is also available on recently issued publications,withdrawn and replaced publications,as well as corrigenda.IEC Just Published This summary of recently issued publications(www.iec.ch/online_news/justpub)is also available by email.Please contact the Customer Service Centre(see below)for further information.Customer Service Centre If you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.ch Tel:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONALSTANDARDIEC60728-7-1First edition2003-10Cable networks for television signals,sound signals and interactive services Part 7-1:Hybrid Fibre Coax Outside PlantStatus Monitoring Physical(PHY)Layer Specification IEC 2003 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.chRFor price,see current cataloguePRICE CODECommission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60728-7-1 IEC:2003(E)CONTENTSFOREWORD.3INTRODUCTION.51Scope.62Normative references.73Terms,definitions and abbreviations.73.10 Abbreviated terms.84HMS reference architecture forward and return channel specifications.94.1HMS specification documents.94.2Functional assumptions.105Physical layer specification.105.1Separate forward and return channels.105.2Single forward and return path channels.115.3Byte-based transmission.115.4Byte formats and transmission order.115.5Packet-based transmission.115.6Duplex operation.115.7Forward and return channel specifications.115.8Media access control layer interface.185.9RF cut-off.18Bibliography.19Figure 1 HMS Reference architecture diagram.9Figure 2 Bit transmission order.11Table 1 Transponder type classifications.6Table 2 HMS document family.9Table 3 Spectral limits by geographical area.10Table 4 HMS PHY channel RF and modulation specifications.12LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60728-7-1 IEC:2003(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION_CABLE NETWORKS FOR TELEVISION SIGNALS,SOUND SIGNALS AND INTERACTIVE SERVICES Part 7-1:Hybrid Fibre Coax Outside Plant status monitoring Physical(PHY)layer specificationFOREWORD1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprisingall national electrotechnical committees(IEC National Committees).The object of IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electronic fields.Tothis end and in addition to other activities,IEC publishes International Standards,Technical Specifications,Technical Reports,Publicly Available Specifications(PAS)and Guides(hereafter referred to as“IECPublication(s)”).Their preparation is entrusted to technica