1、 TIA-455-160-A-2003 APPROVED: AUGUST 26, 2003 REAFFIRMED: FEBRUARY 6, 2013 TIA-455-160-A (Revision of TIA-455-160) THIS STANDARD REPLACES TIA/EIA-455-161) September 2003FOTP- 160 IEC-60793-1-50 Optical Fibres- Part 1-50: Measurement Methods and Test Procedures- Damp Heat (Steady State) NOTICE TIA En
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20、ods and Test Procedures Damp Heat (Steady State) TIA-455-160-A supercedes the current TIA/EIA-455-160 (FOTP-160 Procedure for Assessing Temperature and Humidity Exposure Effects on Optical Characteristics of Optical Fibers), and replaces TIA/EIA-455-161 (FOTP-161 Procedure for Assessing Temperature
21、and Humidity Exposure Effects on Mechanical Characteristics of Optical Fibers). This action was taken under the cognizance of the TIA-FO-4.6 Subcommittee on Optical Fibers. IEC 60793-1-50 adopted as TIA-455-160-A iCONTENTS FOREWORD ii INTRODUCTION .iv 1 Scope and object1 2 Normative references .1 3
22、Apparatus 1 3.1 Chamber .1 3.2 Humidifier2 3.3 Other apparatus 2 4 Sampling and specimens2 5 Procedure 2 5.1 Measurements.2 5.1.1 Optical measurements .2 5.1.2 Mechanical measurements.3 5.2 Preconditioning .3 5.3 Conditioning 3 5.4 Recovery.3 6 Pass/fail criteria .3 7 Results.3 8 Specification infor
23、mation 4 IEC 60793-1-50 adopted as TIA-455-160-A iiINTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL FIBRES Part 1-50: Measurement methods and test procedures Damp heat (steady state) FOREWORD 1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization co
24、mprising 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 addition to other activities, the IEC publishes Internat
25、ional Standards. 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
26、. The 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 the IEC on technical matters express, as nearly as possible, an international con
27、sensus of opinion on the relevant subjects since each technical committee has representation from all interested National Committees. 3) The documents produced have the form of recommendations for international use and are published in the form of standards, technical specifications, technical repor
28、ts or guides and they are accepted by the National Committees in that sense. 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 divergence
29、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. 6) Att
30、ention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60793-1-50 has been prepared by subcommittee 86A: Fibres an
31、d cables, of IEC technical committee 86: Fibre optics. This standard, together with the other standards in the IEC 60793-1-5X series, cancels and replaces the first edition of IEC 60793-1-5, of which it constitutes a technical revision. The text of this standard is based on the following documents:
32、FDIS Report on voting 86A/677/FDIS 86A/701/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 3. IEC 60793-1-50 adopted as TIA-455-16
33、0-A iiiIEC 60793-1-5X consists of the following parts, under the general title: Optical fibres: Part 1-50: Measurement methods and test procedures Damp heat (steady state) Part 1-51: Measurement methods and test procedures Dry heat Part 1-52: Measurement methods and test procedures Change of tempera
34、ture Part 1-53: Measurement methods and test procedures Water immersion The committee has decided that the contents of this publication will remain unchanged until 2003. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. IEC 60793-1-50 adopted as
35、 TIA-455-160-A ivINTRODUCTION Publications in the IEC 60793-1 series concern measurement methods and test procedures as they apply to optical fibres. Within the same series several different areas are grouped, as follows: parts 1-10 to 1-19: General parts 1-20 to 1-29: Measurement methods and test p
36、rocedures for dimensions parts 1-30 to 1-39: Measurement methods and test procedures for mechanical characteristics parts 1-40 to 1-49: Measurement methods and test procedures for transmission and optical characteristics parts 1-50 to 1-59: Measurement methods and test procedures for environmental c
37、haracteristics. IEC 60793-1-50 adopted as TIA-455-160-A 1OPTICAL FIBRES Part 1-50: Measurement methods and test procedures Damp heat (steady state) 1 Scope and object This part of IEC 60793 provides a practical method for evaluating fibre performance in a defined environment. The purpose of this sta
38、ndard is to determine the suitability of optical fibre (types A1a to A1d and B1 to B4) to withstand the environmental condition of high humidity and high temperature which may occur in actual use, storage and/or transport. The test is primarily intended to permit the observation of effects of high h
39、umidity at constant temperature over a given period. NOTE The applicability of this test to other fibre types is under study. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60793. For dated
40、references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of IEC 60793 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated ref
41、erences, the latest edition of the normative document referred to applies. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 60068-2-3:1985, Environmental testing Part 2: Tests Test Ca: Damp heat, steady state IEC 60793-1-32, Optical fibres Part 1-32: Measurem
42、ent methods and test procedures Coating strippability IEC 60793-1-40, Optical fibres Part 1-40: Measurement methods and test procedures Attenuation IEC 60793-2:1998, Optical fibres Part 2: Product specifications 3 Apparatus 3.1 Chamber The apparatus consists of an environmental chamber in accordance
43、 with IEC 60068-2-3, Test Ca. The chamber shall be capable of housing the specimen and of allowing access for measurement during conditioning. It shall also be capable of maintaining the specified temperature and humidity within the specified tolerances. Forced air circulation may be used to maintai
44、n homogeneous conditions. The chamber and accessories shall IEC 60793-1-50 adopted as TIA-455-160-A 2be constructed and arranged in such a manner as to avoid condensation dripping on the specimen. 3.2 Humidifier Demineralised or de-ionised water is used to obtain the specified humidity. No rust or c
45、orrosion contaminants shall be imposed on the specimen by the test facility. The water added to the humidifier shall be controlled according to the manufacturers instructions. 3.3 Other apparatus Additional apparatus may be necessary to perform the examinations and measurements (or as specified in t
46、he detail specification). 4 Sampling and specimens For optical measurements, the length of the specimen shall be at least 1 000 m for fibre types A1a to A1d, and at least 2 000 m for fibre types B1 to B4, to allow the required measurement repeatability. The amount of the specimen outside of the test
47、 chamber shall be minimised, and if it exceeds 10 % of the overall specimen length, this should be reported. The preparation of the specimen shall have no detrimental effect on the fibre whilst under test conditions. Unless otherwise defined in the detail specification, it is recommended that the fi
48、bre sample be loosely coiled and dusted with a material such as talcum powder, to allow the coils to move freely against each other. The specimen may be coiled horizontally or vertically, with a minimum bend diameter of 150 mm to avoid any macro-bending effects. If the specimen is to be sprinkled wi
49、th talc, then a piece of un-powdered fibre from the specimen should be exposed to the test environment. This piece of fibre shall be of sufficient length to enable any physical examinations to be performed before and after the test. A control length of the specimen shall be removed prior to the test to enable the completion of required mechanical measurements for comparison to measurements made after the test. This control length should not be sprinkled with talc. 5 Procedure Conduct the procedure in accordance with I
