1、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/BANGALORE
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8、rvice 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 in
9、teractive 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,witho
10、ut 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 In
11、ternationaleInternational 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 Abbr
12、eviated 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.115.4Byt
13、e 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 Trans
14、ponder 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
15、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 fo
16、r 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
