《IEC-61280-2-2-2008.pdf》由会员分享，可在线阅读，更多相关《IEC-61280-2-2-2008.pdf（58页珍藏版）》请在三一文库上搜索。
1、 IEC 61280-2-2 Edition 3.0 2008-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Fibre optic communication subsystem test procedures Part 2-2: Digital systems Optical eye pattern, waveform and extinction ratio measurement Procdures dessai des sous-systmes de tlcommunications fibres optiques Partie 2-2
2、: Systmes numriques Mesure du diagramme de lil optique, de la forme donde et du taux dextinction IEC 61280-2-2:2008 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:26:07 MDTNo reproduction or networ
3、king permitted without license from IHS -,-,- THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including ph
4、otocopying 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 IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your
5、local IEC member National Committee for further information. Droits de reproduction rservs. Sauf indication contraire, aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les micro
6、films, sans laccord crit de la CEI ou du Comit national de la CEI du pays du demandeur. Si vous avez des questions sur le copyright de la CEI ou si vous dsirez obtenir des droits supplmentaires sur cette publication, utilisez les coordonnes ci-aprs ou contactez le Comit national de la CEI de votre p
7、ays de rsidence. IEC Central Office 3, rue de Varemb CH-1211 Geneva 20 Switzerland Email: inmailiec.ch Web: www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electron
8、ic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make 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
9、 IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,). It also gives information on projects, withdrawn and replaced publications. ? IEC Just Published: www.iec.ch/online_news/justpub Stay up to date on all new IEC publications. Just Pub
10、lished details twice a month all new publications released. Available on-line and also by email. ? Electropedia: www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French, with equivalent terms
11、 in additional languages. Also known as the International Electrotechnical Vocabulary online. ? Customer Service Centre: www.iec.ch/webstore/custserv If 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
12、: csciec.ch Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 A propos de la CEI La Commission Electrotechnique Internationale (CEI) est la premire organisation mondiale qui labore et publie des normes internationales pour tout ce qui a trait llectricit, llectronique et aux technologies apparentes. A pro
13、pos des publications CEI Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possdez ldition la plus rcente, un corrigendum ou amendement peut avoir t publi. ? Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm Le Catalogue en-li
14、gne de la CEI vous permet deffectuer des recherches en utilisant diffrents critres (numro de rfrence, texte, comit dtudes,). Il donne aussi des informations sur les projets et les publications retires ou remplaces. ? Just Published CEI: www.iec.ch/online_news/justpub Restez inform sur les nouvelles
15、publications de la CEI. Just Published dtaille deux fois par mois les nouvelles publications parues. Disponible en-ligne et aussi par email. ? Electropedia: www.electropedia.org Le premier dictionnaire en ligne au monde de termes lectroniques et lectriques. Il contient plus de 20 000 termes et dfini
16、tions en anglais et en franais, ainsi que les termes quivalents dans les langues additionnelles. Egalement appel Vocabulaire Electrotechnique International en ligne. ? Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm Si vous dsirez nous donner des commentaires sur cette publication
17、 ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:26:0
18、7 MDTNo reproduction or networking permitted without license from IHS -,-,- IEC 61280-2-2 Edition 3.0 2008-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Fibre optic communication subsystem test procedures Part 2-2: Digital systems Optical eye pattern, waveform and extinction ratio measurement Procd
19、ures dessai des sous-systmes de tlcommunications fibres optiques Partie 2-2: Systmes numriques Mesure du diagramme de lil optique, de la forme donde et du taux dextinction INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE U ICS 33.180.01 PRICE CODE CODE PRIX ISBN 2
20、-8318-9637-1 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:26:07 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 61280-2-2 IEC:2008 CONTENTS FOREWORD.4 1 Scope and obje
21、ct6 2 Normative references6 3 Apparatus.6 3.1 Time-domain optical detection system7 3.1.1 Optical-to-electrical (O/E) converter .7 3.1.2 Resistive signal splitter (optional).8 3.1.3 Linear-phase low-pass filter .8 3.1.4 Oscilloscope10 3.1.5 Overall system response10 3.2 Oscilloscope synchronization
22、system .10 3.3 Pulse pattern generator .11 3.4 Optical power meter.11 3.5 Optical attenuator 11 3.6 Test cord.11 4 Test sample11 5 Procedure.12 5.1 Method 1: Basic waveform measurement.12 5.2 Method 2: Extinction measurement method using the histogram function.12 6 Calculation .14 6.1 Basic waveform
23、 measurement definitions.14 6.2 Method 2: Extinction measurement method using the histogram function17 6.3 Eye-diagram analysis using a mask .18 7 Test result 19 7.1 Required information .19 7.2 Available information .19 7.3 Specification information20 Annex A (informative) Oscilloscope synchronizat
24、ion system23 Bibliography27 Figure 1 Optical eye pattern, waveform, and extinction ratio measurement configuration.6 Figure 2 Time-domain optical detection system 7 Figure 3 Illustrations of NRZ and RZ eye-diagram parameters 17 Figure 4 Example of eye pattern measured with 0,75/T low-pass filter.18
25、Figure 5 Example of eye pattern measured with 3,0/T low-pass filter.19 Figure 6 Eye diagram with vertical histogram data collected from the central 20 % window19 Figure A.1 Oscilloscope synchronization system .23 Table 1 Frequency response characteristics .10 Table 2 Typical parameters for the measu
26、rement shown in Figure 4 .21 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:26:07 MDTNo reproduction or networking permitted without license from IHS -,-,- 61280-2-2 IEC:2008 3 Table 3 Typical para
27、meters for the measurement shown in Figure 5 .22 Table A.1 Example lengths of common RG-58 cable.25 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:26:07 MDTNo reproduction or networking permitted w
28、ithout license from IHS -,-,- 4 61280-2-2 IEC:2008 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIBRE OPTIC COMMUNICATION SUBSYSTEM TEST PROCEDURES Part 2-2: Digital systems Optical eye pattern, waveform and extinction ratio measurement FOREWORD 1) The IEC (International Electrotechnical Commission)
29、is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in additi
30、on to other activities, the IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee inter
31、ested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordan
32、ce with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all in
33、terested National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsib
34、le for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any dive
35、rgence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards.
36、 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property da
37、mage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this pu
38、blication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all
39、 such patent rights. International Standard IEC 61280-2-2 has been prepared by subcommittee 86C: Fibre optic systems and active devices, of IEC technical committee 86: Fibre optics. This third edition cancels and replaces the second edition published in 2005 and constitutes a technical revision. Thi
40、s edition includes the following significant technical changes with respect to the previous edition: a) The necessity of DC coupling for extinction ratio measurement is clarified. b) The definition of extinction ratio has been revised to better harmonize with ITU-T. c) The definition of OMA has been
41、 clarified. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:26:07 MDTNo reproduction or networking permitted without license from IHS -,-,- 61280-2-2 IEC:2008 5 The text of this standard is based on
42、 the following documents: CDV Report on voting 86C/768/CDV 86C/801/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of al
43、l parts of the IEC 61280 series, published under the general title Fibre optic communication subsystem test procedures, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web si
44、te under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition; or amended. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910
45、770001 Not for Resale, 07/25/2008 03:26:07 MDTNo reproduction or networking permitted without license from IHS -,-,- 6 61280-2-2 IEC:2008 FIBRE OPTIC COMMUNICATION SUBSYSTEM TEST PROCEDURES Part 2-2: Digital systems Optical eye pattern, waveform and extinction ratio measurement 1 Scope and object Th
46、e purpose of this part of IEC 61280 is to describe a test procedure to measure the eye pattern and waveform parameters such as rise time, fall time, overshoot, and extinction ratio. Alternatively, the waveform may be tested for compliance with a predetermined waveform mask. 2 Normative references Th
47、e 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 the referenced document (including any amendments) applies. ITU-T Recommendation G.957, Optical interfaces for
48、equipments and systems relating to the synchronous digital hierarchy 3 Apparatus The primary components of the measurement system are a photodetector, a low-pass filter, an oscilloscope, and an optical power meter, as shown in Figure 1. Pulse pattern generator Optical transmitter Optical attenuator (Clock) Data Test cordTest cord Optical interface point Time-doma