EN 61280-2-2:2005
(Main)Fibre optic communication subsystem test procedures - Part 2-2: Digital systems - Optical eye pattern, waveform and extinction ratio measurement
Fibre optic communication subsystem test procedures - Part 2-2: Digital systems - Optical eye pattern, waveform and extinction ratio measurement
Describes a test procedure to measure 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.
Prüfverfahren für Lichtwellenleiter-Kommunikationsuntersysteme - Teil 2-2: Digitale Systeme - Messung des optischen Augendiagramms, der Wellenform und des Extinktionsverhältnisses
Procédures d'essai des sous-systèmes de télécommunications à fibres optiques - Partie 2-2: Systèmes numériques - Mesure du diagramme de l'oeil optique, de la forme d'onde et du taux d'extinction
Décrit une procédure d'essai pour mesurer le diagramme de l' il et les paramètres de la forme d'onde tels que le temps de montée, le temps de descente, le taux de dépassement et le taux d'extinction. Sinon, la forme d'onde peut être déterminée avec un masque de forme d'onde prédéterminé.
Postopki preskušanja optičnega komunikacijskega podsistema – 2-2. del: Digitalni sistemi – Merjenje po vzorcu optičnega očesa, valovne oblike in hitrosti ugašanja (IEC 61280-2-2:2005)
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STANDARDPostopki preskušanja optičnega komunikacijskega podsistema – 2-2. del: Digitalni sistemi – Merjenje po vzorcu optičnega očesa, valovne oblike in hitrosti ugašanja (IEC 61280-2-2:2005)Fibre optic communication subsystem test procedures - Part 2-2: Digital systems - Optical eye pattern, waveform, and extinction ratio measurement (IEC 61280-2-2:2005)©
Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljenoReferenčna številkaSIST EN 61280-2-2:2006(en)ICS33.180.01
EUROPEAN STANDARD
EN 61280-2-2 NORME EUROPÉENNE EUROPÄISCHE NORM
July 2005 CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61280-2-2:2005 E
ICS 33.180.01 Supersedes EN 61280-2-2:1999
English version
Fibre optic communication subsystem test procedures Part 2-2: Digital systems -
Optical eye pattern, waveform and
extinction ratio measurement (IEC 61280-2-2:2005)
Procédures d'essai des sous-systèmes de télécommunications à fibres optiques Partie 2-2: Systèmes numériques - Mesure du diagramme de l'œil optique,
de la forme d'onde et du taux d'extinction (CEI 61280-2-2:2005)
Prüfverfahren für Lichtwellenleiter-Kommunikationsuntersysteme Teil 2-2: Digitale Systeme -
Messung des optischen Augen-diagramms, der Wellenform und
des Extinktionsverhältnisses (IEC 61280-2-2:2005)
This European Standard was approved by CENELEC on 2005-04-01. 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-date 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 under 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
at national level by publication of an identical
national standard or by endorsement
(dop)
2006-02-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2008-04-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 61280-2-2:2005 was approved by CENELEC as a European Standard without any modification. __________
- 3 - EN 61280-2-2:2005
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 undated references, the latest edition of the referenced document (including any amendments) applies. NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year ITU-T Recommendation G.957 1999 Optical interfaces for equipments and systems relating to the synchronous digital hierarchy - - A1 2003
- -
NORME INTERNATIONALECEIIEC INTERNATIONAL STANDARD 61280-2-2Deuxième éditionSecond edition2005-04 Procédures d'essai des sous-systèmes de télécommunications à fibres optiques – Partie 2-2: Systèmes numériques – Mesure du diagramme de l'œil optique, de la forme d'onde et du taux d'extinction
Fibre optic communication subsystem test procedures – Part 2-2: Digital systems – Optical eye pattern, waveform and extinction ratio measurement Pour prix, voir catalogue en vigueur For price, see current catalogue IEC 2005
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Copyright - all rights reserved Aucune partie de cette publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord écrit de l'éditeur. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission,
3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch
Web: www.iec.ch CODE PRIX PRICE CODE U Commission Electrotechnique InternationaleInternational Electrotechnical Commission
61280-2-2 IEC:2005 – 3 –
CONTENTS FOREWORD.5
1 Scope and object.9 2 Normative reference.9 3 Apparatus.9 3.1 Time-domain optical detection system.11 3.2 Oscilloscope synchronization system.19 3.3 Pulse pattern generator.19 3.4 Optical power meter.19 3.5 Optical attenuator.19 3.6 Jumper cable.21 4 Test sample.21 5 Procedure.21 5.1 Method 1: Basic waveform measurement.21 5.2 Method 2: Extinction measurement method using the histogram function.23 6 Calculation.25 6.1 Method 1: Basic waveform measurement definitions.25 6.2 Method 2: Extinction calculation method using the histogram function.33 6.3 Eye-diagram analysis using a mask.33 7 Test result.37 7.1 Required information.37 7.2 Available information.39 7.3 Specification information.39
Annex A (informative)
Oscilloscope synchronization system.43
Bibliography.51
Figure 1 – Optical eye pattern, waveform, and extinction ratio measurement configuration.9 Figure 2 – Time-domain optical detection system.11 Figure 3 – Illustration of NRZ and RZ eye-diagram parameters.33 Figure 4 – Example of eye pattern measured with 0,75/T low-pass filter.35 Figure 5 – Example of eye pattern measured with 3,0/T low-pass filter.37 Figure 6 – Eye diagram with vertical histogram data collected from the central 20 % window.37 Figure A.1 – Oscilloscope synchronization system.43
Table 1 – Frequency response characteristics.17 Table 2 – Typical parameters for the measurement shown in Figure 4.39 Table 3 – Typical parameters for the measurement shown in Figure 5.41
61280-2-2 IEC:2005 – 5 –
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 International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this 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 “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested 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. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of 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 interested IEC 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 responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 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 damage 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 publication. 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 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 second edition cancels and replaces the first edition published in 1998. This second edition constitutes a technical revision. Significant changes include updating the extinction ratio measurement and eye-mask definitions to coincide with TIA OFSTP-4A and inclusion of methods for return-to-zero (RZ) eye measurements.
61280-2-2 IEC:2005 – 7 –
The text of this standard is based on the following documents: FDIS Report on voting 86C/642/FDIS 86C/661/RVD
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. IEC 61280 consists of the following parts under the general title Fibre optic communication subsystem test procedures 1) : Part 1:
General communication subsystems 2) Part 2: Digital systems 3) Part 4: Cable plant and links 4) Part 3
is in preparation.
The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site 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. ___________ 1) The general title of the IEC 61280 series has changed. Previous parts were published under the general title Fibre optic communication subsystem basic test procedures 2) The title of Part 1 has chan
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