EN 61280-1-1-1998 en Fibre Optic Communication Subsystem Basic Test Procedures Part 1-1 Test Procedures for General Communication Subsystems Transmitter Output Optical Power Measur.pdf

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1、BSI Standards PublicationFibre optic communication subsystem basic test proceduresPart 11: Test procedures for general communication subsystems Transmitter output optical power measurement for single-mode optical fibre cableBS EN 61280-1-1:2013National forewordThis British Standard is the UK impleme

2、ntation of EN 61280-1-1:2013. It is identical to IEC 61280-1-1:2013. It supersedes BS EN 61280-1-1:1998 which is withdrawn.The UK participation in its preparation was entrusted by TechnicalCommittee GEL/86, Fibre optics, to Subcommittee GEL/86/3, Fibre optic systems and active devices.A list of orga

3、nizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2013.Published by BSI Standards Limited 2013

4、ISBN 978 0 580 75569 9ICS 33.180.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 September 2013.Amendments/corrigenda issued since publicationDate Text affect

5、edBRITISH STANDARDBS EN 61280-1-1:2013EUROPEAN STANDARD EN 61280-1-1 NORME EUROPENNE EUROPISCHE NORM August 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Cen

6、tre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61280-1-1:2013 E ICS 33.180.01 Supersedes EN 61280-1-1:1998 English version Fibre optic communication subsystem basic test procedures -

7、Part 1-1: Test procedures for general communication subsystems - Transmitter output optical power measurement for single-mode optical fibre cable (IEC 61280-1-1:2013) Procdures dessai de base des sous-systmes de tlcommunication fibres optiques - Partie 1-1: Procdures dessai des sous-systmes gnraux d

8、e tlcommunication - Mesure de la puissance optique des metteurs coupls des cbles fibres optiques unimodales (CEI 61280-1-1:2013) Lichtwellenleiter-Kommunikationsuntersysteme - Grundlegende Prfverfahren - Teil 1-1: Prfverfahren fr allgemeine Kommunikationsuntersysteme - Messung der Senderausgangsleis

9、tung fr Einmoden-LWL-Kabel (IEC 61280-1-1:2013) This European Standard was approved by CENELEC on 2013-06-25. 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 a

10、lteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other langu

11、age made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the

12、Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United

13、 Kingdom. BS EN 61280-1-1:2013EN 61280-1-1:2013 - 2 - Foreword The text of document 86C/1065/CDV, future edition 2 of IEC 61280-1-1, 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 approved by CENELEC as EN 61

14、280-1-1:2013. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-03-25 latest date by which the national standards conflicting with the document have to be withdrawn (d

15、ow) 2016-06-25 This document supersedes EN 61280-1-1:1998. EN 61280-1-1:2013 includes the following significant technical changes with respect to EN 61280-1-1:1998: - inclusion of Annex A on how to account for uncertainties; - editorial corrections throughout the document and updates to references.

16、Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 61280-1-1:2013 was appro

17、ved by CENELEC as a European Standard without any modification. BS EN 61280-1-1:2013- 3 - EN 61280-1-1:2013 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced

18、in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications

19、, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 61300-3-35 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-35: Examinations and measurements - Fibre optic connector endface visual and automated insp

20、ection EN 61300-3-35 - IEC 61315 - Calibration of fibre-optic power meters EN 61315 - BS EN 61280-1-1:2013 2 61280-1-1 IEC:2013(E) CONTENTS 1 Scope and object 5 2 Normative references 5 3 Apparatus . 5 3.1 Optical power meter . 5 3.2 Input signal source 5 3.3 Test cord . 5 3.4 Calibration . 6 4 Test

21、 sample 6 5 Procedure . 6 6 Calculation . 7 7 Test results. 7 7.1 Required information . 7 7.2 Available information . 7 Annex A (informative) Taking into account uncertainties . 8 Bibliography 9 Figure 1 Transmitter output power measurement configuration . 6 BS EN 61280-1-1:201361280-1-1 IEC:2013(E

22、) 5 FIBRE OPTIC COMMUNICATION SUBSYSTEM BASIC TEST PROCEDURES Part 1-1: Test procedures for general communication subsystems Transmitter output optical power measurement for single-mode optical fibre cable 1 Scope and object This part of IEC 61280 applies to fibre optic general communication subsyst

23、ems. The object of this part is to measure the optical power coupled from the output of a transmitter under test into single-mode optical fibre cable containing dispersion-unshifted fibre or dispersion-shifted fibre. 2 Normative references The following documents, in whole or in part, are normativel

24、y referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61300-3-35, Fibre optic interconnecting devices and passive com

25、ponents Basic test and measurement procedures Part 3-35: Examinations and measurements Fibre optic connector endface visual and automated inspection IEC 61315, Calibration of fibre-optic power meters 3 Apparatus 3.1 Optical power meter The optical power meter shall be capable of measuring the range

26、of power at wavelengths provided by the transmitter. The optical power meter shall have a resolution of at least 0,1 dB. The meter shall have a detecting surface of sufficient size to capture all the power coming from the fibre that is put into it. 3.2 Input signal source The input signal source is

27、a signal generator at the appropriate signal rate of the system interface. 3.3 Test cord A length of single-mode optical fibre cable, which is known to remove cladding modes, shall be used. The optical fibre (cable) shall be terminated at both ends with appropriate connectors. The ends for connectio

28、n to the fibre optic transmitter and to the optical power meter shall be terminated with appropriate connector plugs. These plugs and any adapters necessary to produce the connections shall be such that the performance can be specified by the manufacturer of the equipment or the connectors. Values f

29、or the insertion loss repeatability shall be known. BS EN 61280-1-1:2013 6 61280-1-1 IEC:2013(E) 3.4 Calibration The optical power meter shall be configured and calibrated for the test wavelength. The optical power meters shall be calibrated in accordance with IEC 61315. The equipment used shall hav

30、e a valid calibration certificate in accordance with the applicable quality system for the period over which the testing is done. Tx Terminal under test 80 mm diameter loop 2 m-10 m Sensor head Signal source Test cord Optical power meter IEC 1090/13 Figure 1 Transmitter output power measurement conf

31、iguration 4 Test sample The test sample shall be a specified single-mode fibre optic transmitter, including all signal conditioning and multiplexing equipment used in the system in normal operation. The electrical inputs and outputs shall be those normally available to the user for interfacing with

32、other transmission equipment. 5 Procedure 5.1 Unless otherwise specified, standard operating conditions apply. The ambient or reference point temperature shall be specified. 5.2 Apply appropriate terminal input voltage to the system under test. Apply standard (or extended) operating conditions. Allo

33、w sufficient time (30 min, unless otherwise specified in the detail specification) for the system under test to reach a steady-state temperature and performance condition. 5.3 Turn the optical power meter on, and allow the manufacturers recommended warm-up and settling time to achieve the rated meas

34、urement performance level. 5.4 All connector end faces shall be inspected to verify that they are clean and essentially free of defects in accordance with IEC 61300-3-35. If necessary, connectors should be cleaned in accordance with IEC/TR 62627-01 and re-inspected to verify that the cleaning has be

35、en effective. The appropriate performance selection must be selected. 5.5 Remove higher order modes. For example, use a test cord between 2 m and 10 m long and with an 80 mm diameter loop, as shown in Figure 1. BS EN 61280-1-1:201361280-1-1 IEC:2013(E) 7 5.6 Connect one end of the test cord to the t

36、ransmitter connector and the other end to the sensor head of the optical power meter, as shown in Figure 1. 5.7 Observe the optical power reading. If the meter reading fluctuates more than 0,4 dB, the transmitter power output power is not stable, and the reading should be disregarded. When the meter

37、 reading indication is stable, record the reading. 5.8 Disconnect the fibre test cord from the transmitter connector, clean the test cord connector again, and reconnect to the transmitter. 5.9 Repeat steps 5.7 and 5.8 until five stable readings are obtained. If it is impossible to obtain five stable

38、 readings, or five readings with a maximum deviation less than the stated repeatability for the transmitter connector, from 10 attempted measurements, then the fibre optic transmitter and the test cord shall be rejected. 6 Calculation Calculate the average of the five readings, and record as the ave

39、rage effective transmitter output power. 7 Test results 7.1 Required information Date and title of the test Transmitter identifications Identification of test methods, specific operating conditions (standard or extended) and procedures used Results of the tests, including ambient or reference point

40、temperature 7.2 Available information Identification of test equipment used Measurement uncertainty due to measurement inaccuracy and display resolution Details of the fibre test cord and connectors Insertion loss repeatability of the connectors, including the worst case random mated insertion loss

41、Optical power meter uncertainties Names of test personnel Supply voltages and/or currents Rate and input signal characteristics Optical output measurement conditions: wavelength, transmitter mating connector model number Warm-up time applied for temperature stabilization Extended operating condition

42、s, if applicable BS EN 61280-1-1:2013 8 61280-1-1 IEC:2013(E) Annex A (informative) Taking into account uncertainties A.1 Using optical power meter calibration report If the optical power has been calibrated according to IEC 61315, the calibration report should include the correction factor, CF, def

43、ined as the numerical factor by which the uncorrected result of a measurement is multiplied to compensate for systematic error: DUTrefPPCF = (A.1) It is recommended to compensate the optical power reading properly. readreportedPCFP = (A.2) A.2 Taking into account uncertainties If the optical power m

44、easurement is used for a pass/fail test, the uncertainties of measurement and calibration should be used to set the test limits properly. As an example, if the minimum power expected from the transmitter is 1 mW, and if the calibration uncertainties and measurement uncertainties are respectively 3 %

45、 and 2 %, the pass/fail limit should be increased by the accumulated uncertainties. ( ) ( ) mW 1,0360,020,031222measure2calexpectedexpectedL=+=+= UUPPPassFail (A.3) BS EN 61280-1-1:201361280-1-1 IEC:2013(E) 9 Bibliography IEC/TR 62627-01, Fibre optic interconnecting devices and passive components Pa

46、rt 01: Fibre optic connector cleaning methods ISO/IEC GUIDE 98-3, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) EIA/TIA-526-2:1989, OFSTP-2: Effective Transmitter Output Power Coupled into Single-Mode Fiber Optic Cable _ BS EN 61280-1-1:2013This

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