1、 IEC 61300-2-44 Edition 3.0 2013-07 INTERNATIONAL STANDARD Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-44: Tests Flexing of the strain relief of fibre optic devices IEC 61300-2-44:2013(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 20
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9、.0 2013-07 INTERNATIONAL STANDARD Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-44: Tests Flexing of the strain relief of fibre optic devices INTERNATIONAL ELECTROTECHNICAL COMMISSION J ICS 33.180.20 PRICE CODE ISBN 978-2-8322-0906-6 Register
10、ed trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 61300-2-44 IEC:2013(E) CONTENTS FOREWORD . 3 1 Scope . 5 2 Normative references 5 3 General description . 5 4 Apparatus . 5 4.1 General . 5 4.2 Optica
11、l source (S) 6 4.3 Detector (D) . 7 4.4 Mounting fixture . 7 4.5 Flex test machine or jig 7 5 Procedure . 7 5.1 Preparation of specimens 7 5.2 Preconditioning 7 5.3 Initial measurements 7 5.4 Conditioning 7 5.5 Recovery . 8 5.6 Final measurements 8 6 Severity 8 7 Details to be specified . 9 Figure 1
12、 Apparatus for testing 6 Figure 2 Application of the load in the case of duplex cordage 6 Table 1 Severities 8 61300-2-44 IEC:2013(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS BASIC TEST AND MEASUREMENT PROCEDURES Part 2-44: Tests Flexin
13、g of the strain relief of fibre optic devices 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 a
14、ll 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 Publ
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22、al 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 pub
23、lication. 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 61300-2-44 has been prepared by subcommittee SC86B: Fi
24、bre optic interconnecting devices and passive components, of IEC technical committee 86: Fibre optics. This third edition cancels and replaces the second edition published in 2008 and constitutes a technical revision. This edition includes the following significant technical changes with respect to
25、the previous edition: a) revision of Figure 1; b) change of fibre length from the flex point to the weight. 4 61300-2-44 IEC:2013(E) The text of this standard is based on the following documents: CDV Report on voting 86B/3499/CDV 86B/3600/RVC Full information on the voting for the approval of this s
26、tandard 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 all parts of IEC 61300 series, published under the general title Fibre optic interconnecting devices and passive components Basic
27、test and measurement procedures, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date,
28、the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. 61300-2-44 IEC:2013(E) 5 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS BASIC TEST AND MEASUREMENT PROCEDURES Part 2-44: Tests
29、 Flexing of the strain relief of fibre optic devices 1 Scope This part of IEC 61300 specifies a test to determine the influence of flexing under tensile load of the strain relief of fibre optic devices. The intention is to simulate the number of flexing cycles which would typically be experienced du
30、ring service life. This test is applied to both single fibre cable and multiple fibre cable. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applie
31、s. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61300-1, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 1: General and guidance IEC 61300-3-1, Fibre optic interconnecting devices a
32、nd passive components Basic test and measurement procedures Part 3-1: Examinations and measurements Visual examination IEC 61300-3-3, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-3: Examinations and measurements Active monitoring of changes
33、in attenuation and return loss IEC 61300-3-4, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-4: Examinations and measurements Attenuation IEC 61753-1, Fibre optic interconnecting devices and passive components performance standard Part 1: Gene
34、ral and guidance for performance standards 3 General description The device under test (DUT) is rotated 90 in the plane of the cable about an axis perpendicular to the axis of the attached cable and in the case of ribbon cable, parallel to the width of the ribbon. This causes flexing of the strain r
35、elief and cable close to the DUT. During the flexing, a tensile force, but no torque, is applied. 4 Apparatus 4.1 General The apparatus for testing and the flexing patterns involved are presented in Figure 1. 6 61300-2-44 IEC:2013(E) 0 90 +90 25 cm 5 cm DUT Weight Tensile Detector Mounting plate Sou
36、rce IEC 1603/13 Figure 1 Apparatus for testing In the case of duplex cordage or ribbon, the loads shall not be doubled and the cable shall be bent in the minor axis direction as shown in Figure 2. Figure 2 Application of the load in the case of duplex cordage The equipment used is that indicated in
37、4.2 to 4.5. 4.2 Optical source (S) The recommended source shall be in accordance with IEC 61300-3-3 and IEC 61300-3-4 as appropriate. Duplex cordage Load IEC 1276/04 61300-2-44 IEC:2013(E) 7 4.3 Detector (D) The recommended detector shall be in accordance with IEC 61300-3-3 and IEC 61300-3-4 as appr
38、opriate. 4.4 Mounting fixture The mounting fixture rigidly holds the fibre optic DUT in correct alignment during the test. If the device is a fibre optic connector, an adaptor or a receptacle may be used as a mounting fixture. The fixture shall not distort the DUT. The fixture shall allow the DUT to
39、 be connected to monitoring equipment. 4.5 Flex test machine or jig A machine or jig that can rotate the DUT 90 ofrom a straight position while applying a load to the fibre or cable. 5 Procedure 5.1 Preparation of specimens Prepare and clean the specimen in accordance with the manufacturers instruct
40、ions. Visually check that the attachment of the cable to the fibre optic device is not damaged in accordance with IEC 61300-3-1. Fibre length from the flex point to the weight: 25 cm 5 cm. Fibre length is measured from the point of flexing to the point of application of the load. 5.2 Preconditioning
41、 Pre-condition the specimen and all equipment for 2 h at the standard test conditions as defined in IEC 61300-1, unless otherwise specified in the relevant specification. 5.3 Initial measurements Complete initial examinations and measurements on the specimen as required by the relevant specification
42、. 5.4 Conditioning Install the DUT on the apparatus. Measure the attenuation of the DUT with the flexing arm in a vertical position in accordance with IEC 61300-3-4. Apply the specified tensile load and apply the specified number of flexes. Use gentle rotational movements, not exceeding 20 cycles/mi
43、n. The dwell at each extreme shall be not greater than 5 s. Measure the change in attenuation during test in accordance with IEC 61300-3-3. Stop the flexing with the flexing arm in vertical position. Remove the tensile force. 8 61300-2-44 IEC:2013(E) 5.5 Recovery Allow the DUT to remain under standa
44、rd test conditions for 2 h, as defined in IEC 61300-1, unless otherwise specified in the relevant specification. Clean the DUT in accordance with the manufacturers instructions. 5.6 Final measurements Remove the DUT from the apparatus and make final measurements, as defined by the relevant specifica
45、tion, to ensure that there is no permanent damage to the DUT. The results of the final measurement shall be within the limit established in the relevant specification. Visually check that the attachment of the cable to the fibre optic DUT is not damaged in accordance with IEC 61300-3-1. 6 Severity S
46、everity is specified by the magnitude of tensile force and the number of cycles +90 to 90. Recommended values of the test parameters are given in Table 1. Table 1 Severities Category aComponent type Tensile force N Number of cycles C Connectors Reinforced cable 2 100 C Passive components Reinforced
47、cable 2 30 U and E Connectors Reinforced cable 5 100 U and E Passive components Reinforced cable 5 30 O Passive components Reinforced jacketed cables 5 30 Primary and secondary coated fibre 2 30 O Connectors Reinforced jacketed cables 8,9 100 bSFF connectors 5,9 100 baCategory can be found in IEC 61
48、753-1. bApplied at 25 cm 5 cm from cable entrance to plug. 61300-2-44 IEC:2013(E) 9 7 Details to be specified The relevant specification shall specify the following details: magnitude of tensile force; number of flexes; applicable optical fibre cable (type, length, etc.); initial examination and mea
49、surements and performance requirements; permitted change of attenuation during test; final examination and measurements and performance requirements; pass/fail decision criterion; deviations from test procedure. _ INTERNATIONAL ELECTROTECHNICAL COMMISSION 3, rue de Varemb PO Box 131 CH-1211 Geneva 20 Switzerland Tel: + 41 22 919 02 11 Fax: + 41 22 919 03 00 infoiec.ch www.iec.ch
