BS EN 61280-2-2-2008 Fibre optic communication subsystem test procedures — Part 2-2 Digital systems — Optical eye pattern, waveform and extinction ratio measurement.pdf
《BS EN 61280-2-2-2008 Fibre optic communication subsystem test procedures — Part 2-2 Digital systems — Optical eye pattern, waveform and extinction ratio measurement.pdf》由会员分享,可在线阅读,更多相关《BS EN 61280-2-2-2008 Fibre optic communication subsystem test procedures — Part 2-2 Digital systems — Optical eye pattern, waveform and extinction ratio measurement.pdf(30页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 61280-2-2:2008 Fibre optic communication subsystem test procedures Part 2-2: Digital systems Optical eye pattern, waveform and extinction ratio measurement ICS 33.180.01 ? BS EN 61280-2-2:2008 This British Standard was published under the authority of the Standards Policy and
2、Strategy Committee on 30 September 2008 BSI 2008 ISBN 978 0 580 57325 5 National foreword This British Standard is the UK implementation of EN 61280-2-2:2008. It is identical to IEC 61280-2-2:2008. It supersedes BS EN 61280-2-2:2005 which is withdrawn. The UK participation in its preparation was ent
3、rusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/3, Fibre optic systems and active devices. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a cont
4、ract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments EUROPEAN STANDARD EN 61280-2-2 NORME EUROPENNE EUROPISCHE NORM August 2008 CENELEC European Committee
5、 for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC memb
6、ers. Ref. No. EN 61280-2-2:2008 E ICS 33.180.01 Supersedes EN 61280-2-2:2005 English version Fibre optic communication subsystem test procedures - Part 2-2: Digital systems - Optical eye pattern, waveform and extinction ratio measurement (IEC 61280-2-2:2008) Procdures dessai des sous-systmes de tlco
7、mmunications fibres optiques - Partie 2-2: Systmes numriques - Mesure du diagramme de loeil optique, de la forme donde et du taux dextinction (CEI 61280-2-2:2008) Prfverfahren fr Lichtwellenleiter- Kommunikationsuntersysteme - Teil 2-2: Digitale Systeme - Messung des optischen Augendiagramms, der We
8、llenform und des Extinktionsverhltnisses (IEC 61280-2-2:2008) This European Standard was approved by CENELEC on 2008-06-01. 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
9、 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 l
10、anguage 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, Bulgaria, Cyprus, the Czech Republic,
11、 Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of document 86C/768/CDV, future ed
12、ition 3 of IEC 61280-2-2, prepared by SC 86C, Fibre optic systems and active devices, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61280-2-2 on 2008-06-01. This European Standard supersedes EN 61280-2-2:2005. EN 61280-2-2:2008 includes
13、the following significant technical changes with respect to EN 61280-2-2:2005: the necessity of DC coupling for extinction ratio measurement is clarified; the definition of extinction ratio has been revised to better harmonize with ITU-T; the definition of OMA has been clarified. The following dates
14、 were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2009-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-06-01 Annex ZA has been added by CE
15、NELEC. _ Endorsement notice The text of the International Standard IEC 61280-2-2:2008 was approved by CENELEC as a European Standard without any modification. _ BS EN 61280-2-2:2008 2 ? CONTENTS 1 Scope and object5 2 Normative references5 3 Apparatus.5 3.1 Time-domain optical detection system6 3.1.1
16、 Optical-to-electrical (O/E) converter .6 3.1.2 Resistive signal splitter (optional).7 3.1.3 Linear-phase low-pass filter .7 3.1.4 Oscilloscope9 3.1.5 Overall system response9 3.2 Oscilloscope synchronization system .9 3.3 Pulse pattern generator .10 3.4 Optical power meter.10 3.5 Optical attenuator
17、 10 3.6 Test cord.10 4 Test sample10 5 Procedure.11 5.1 Method 1: Basic waveform measurement.11 5.2 Method 2: Extinction measurement method using the histogram function.11 6 Calculation .13 6.1 Basic waveform measurement definitions.13 6.2 Method 2: Extinction measurement method using the histogram
18、function16 6.3 Eye-diagram analysis using a mask .17 7 Test result 18 7.1 Required information .18 7.2 Available information .18 7.3 Specification information19 Annex A (informative) Oscilloscope synchronization system22 Bibliography26 Figure 1 Optical eye pattern, waveform, and extinction ratio mea
19、surement configuration.5 Figure 2 Time-domain optical detection system 6 Figure 3 Illustrations of NRZ and RZ eye-diagram parameters 16 Figure 4 Example of eye pattern measured with 0,75/T low-pass filter.17 Figure 5 Example of eye pattern measured with 3,0/T low-pass filter.18 Figure 6 Eye diagram
20、with vertical histogram data collected from the central 20 % window18 Figure A.1 Oscilloscope synchronization system .22 Table 1 Frequency response characteristics .9 Table 2 Typical parameters for the measurement shown in Figure 4 .20 BS EN 61280-2-2:2008 3 Annex ZA (normative) Normative references
21、 to international publications with their corresponding European publications 27 ? Table 3 Typical parameters for the measurement shown in Figure 5 .21 Table A.1 Example lengths of common RG-58 cable.24 BS EN 61280-2-2:2008 4 ? FIBRE OPTIC COMMUNICATION SUBSYSTEM TEST PROCEDURES Part 2-2: Digital sy
22、stems Optical eye pattern, waveform and extinction ratio measurement 1 Scope and object The 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
23、may be tested for compliance with a predetermined waveform mask. 2 Normative references 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 docume
24、nt (including any amendments) applies. ITU-T Recommendation G.957, Optical interfaces for 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 me
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BS EN 61280-2-2-2008 Fibre optic communication subsystem test procedures Part 2-2 Digital systems Optical 61280
链接地址:https://www.31doc.com/p-3647888.html