1、 TIA-455-162-A (Revision of TIA-455-162) July 1999FOTP-162 Optical Fiber Cable Temperature Humidity Cycling ANSI/TIA-455-162-A-1999 APPROVED: JULY 21, 1999 REAFFIRMED: MAY 10, 2005 REAFFIRMED: AUGUST 2, 2013 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest
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6、ns before its use. (From Project No. 3-3401-RV1-RF2, formulated under the cognizance of the TIA TR-42 Telecommunications Cabling Systems, TR-42.12 Subcommittee on Optical Fibers and Cables). Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Technology (b) there is no assurance that the Document w
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19、OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. FOTP-162 Optical fiber cable temperature-humidity cycling Foreword This document comes from TIA Project No. 3401, formulated under the cognizance of the TIA FO-6.7 Subcommittee on Fiber Opti
20、c Cables. This FOTP is part of the series of test procedures included within Recommended Standard EIAITIA-455. Note - This FOTP was originally published as EIA-455-162. There is one informative annex. Key words: 1 Introduction 1.1 Intent This test procedure describes a method for evaluating material
21、s and properties of fiber optic cables when they are subjected to the cyclic effects of temperature and humidity. This is an accelerated environmental test designed to expose the cable to controlled high humidity at elevated temperatures, and to frozen moisture. The intent of this test method is to:
22、 a) detect changes in the transmission performance of the fibers, and b) detect damage to the cable materials and components, such as cracks or blisters. 1.2 Scope. This test procedure applies to the testing of optical fiber cable. Related tests for connectors and other devices which may be connecte
23、d to cables under test are discussed in 1.5. 1.3 Background The elevated temperature cycling conditions impose a breathing action, potentially inducing corrosion processes which would allow moisture penetration and migration into all areas of the cable. The freezing temperatures test the ability of
24、the cable components to resist cracking and blistering. The performance of a cable may be further evaluated after exposure to these temperature- humidity effects by performing additional test procedures such as mechanical and/or optical tests as specified in the detail specification. 1.4 Procedure d
25、efaults. Clause 8 of this procedure, Specification information, defines the detailed requirements that are required to be specified in a detail specification in order to properly utilize this FOTP. “Default“ requirements are those that apply if no other alternative requirements are given in a detail
26、 specification. The following is a summary of the procedure defaults that are written into the language of this FOTP. These defaults are provided for the convenience of users of this FOTP. 4.2 and 4.3 The cable test specimen shall be at least 500 meters long, and wound on a reel at low tension. 5.1
27、and table 1 The minimum soak period for preconditioning is specified in table 1. 5.3 Test wavelengths and number of fibers to be tested are defined. 5.3, 5.4, and 5.5 Optical measurements are required: number of transmitting fibers, and optical transmittance or attenuation. 5.4, figure 1, and The cy
28、cle series comprises ten (1 0) cycles, and the table 2 test cycle is defined by figure 1 and the associated table 2. STD-EIA TIA/EIA-455-LbZA-ENGL 1777 3234b00 0b24337 T10 D 1.5 Related test procedures. Note that the intent and methodology of this test is similar to those of FOTP-3, EIA-186-2E, FOTP
29、-5, FOTP-72, and FOTP-73. FOTP-3 is used for temperature-only cycling (no humidity component). EIA-186 is a general procedure applicable to a broad range of electronic and similar components, but is the source of the cycle of figure 1. FOTP-5, Method B, is a test procedure which is virtually identic
30、al to this FOTP, except that it has parameters and attributes specific to connectors and other optical fiber components. FOTP-72 and -73 are directed to temperature-humidity cycling of fibers. FOTP-162 is written to address the test parameters and attributes specific to optical fiber cable. 2 Normat
31、ive references 2.1 The following documents form a part of this FOTP to the extent specified herein: EIA-186-2E Standard test methods for passive electronic component parts, method 2: Moisture resistance (cycling) (1 978) EIAITIA-455-A Standard test procedures for fiber optic fibers, cables, transduc
32、ers, sensors, connecting and terminating devices, and other fiber optic components (August 1 991 ) FOTP-3, TINEIA-455-3A Procedure to measure temperature cycling effects on optical fibe4 optical cable, and other passive fiber optic components (May 1989) FOTP-13, EIA RS-455-13 Wsual and mechanical in
33、spection of fibers, cables, connectors ancVor other fiber optic components (March 1 984) FOTP-72, TIAIEIA-455-72 Procedure for Assessing Temperature and Humidiify Cycling Exposure Effects on Optical Characteristics of Optical Fibers (October 1997) FOTP-73, TINEIA-455-73 Procedure for Assessing Tempe
34、rature and Humidify Cycling Exposure Effects on Mechanical Characteristics of Optical Fibers (October 1 997) 2.2 Optical tests and measurements which may be made to verify conformance to the requirements of subclauses which follow include, but are not limited to, the following references: FOTP-20, E
35、l A RS-455-20A Measurement of change in optical transmittance (July 1 996) FOTP-32, EIMIA-455-32A Fiber optic circuit discontinuities (April 1 990) FOTP-46, EIAKIA-455-46A Spectral attenuation measurement for long-length, graded- index opticaf fibers (October 1 990) FOTP-53, El MI A-455-53A A ttenua
36、tion by substitution measurement for multimode graded-index optical fibers or fiber assemblies used in long length communications systems (September 1 990) FOTP-59, EIAfTIA-455-59 Measurement of fiber point defects using an OTDR (November 1989) FOTP-61, ElMIA-455-61 Measurement of fiber or cable att
37、enuation using an OTDR (November 1 989) FOT P-78, el MIA-455-78A Spectral-attenuation cutback measurement for single-mode optical fibers (May 1 990) STD-EIA TIAIEIA-455-Lh2A-ENGL 1999 W 3234h00 Oh24340 732 1 TI AfEI A-455-1 62-A FOTP-171, EIA-455-171 Attenuation by substitut.n measurement-for short-
38、length multimode graded-index and single-mode optical fiber cable assemblies (July 1 987) 2.3 Users of this FOTP are encouraged to specify the most recent edition of the test methods and Standards referenced above. In case of dispute or uncertainty, use the document revision specified above. Caution
39、 - Occasionally, a new edition of a referenced Standard may be so different from its previous edition that using it, or the specific subclause references is inappropriate. 3 Apparatus 3.1 Environmental chamber The environmental test facilities shall have an operational range capable of producing and
40、 maintaining the temperature extremes and humidity specified. This equipment shall have the capability to change its temperature at a rate of at least 20 OCIhour while maintaining controlled humidity, as specified, at temperatures above 20 “C. The chamber shall be capable of maintaining any selected
41、 temperature within + 2 OC and the humidity within the ranges specified in figure 1 during the test. The volume of the test chamber shall accommodate the test cable on a reel without interference with the maintenance of the test conditions. Provision shall be made to prevent the dripping of condensa
42、te on the test cable. The heat source shall be located such that radiant heat will not fall directly on the specimen. If the optical tests are required, the chamber shall also have a port through which, to extend the cable ends for testing. 3.2 Recording devices. Recording device) shall be used to p
43、rovide a record of the temperature and humidity throughout the test. 3.2.1 Relative humidity indicator. Determine relative humidity (RH) using the dry bulb-wet bulb thermometer comparison method or by an equivalent method capable of the required accuracy and precision. When readout charts are used,
44、they shall be capable of being read with a resolution within 1 OC or 3% RH. (Use of a recording device may be desirable to permit correlation between changes of state and certain events.) When the wet bulb control method is used, clean the wet bulb and tank and install a new wick at least once every
45、 30 days, or at the conclusion of each test, if longer than 30 days. 3.2.2 Temperature recording device. The temperature recording device(s) shall have an accuracy of If: 1 OC across the full temperature range of the test. Use of a multichannel recorder may be desirable to permit recording of temper
46、atures measured at several points around the sample. 3.3 Sample supports. Materials used to support the sample, as well as any platforms, shall be nonreactive in high humidity. 3.4 Moisture source. Steam or distilled and demineralized or deionized water having a pH between 6.0 and 7.2 at standard am
47、bient temperature (23 OC for most applications; 25 “C for U.S. Military) shall be used to obtain the specified humidity. 3.5 Transmittance equipment. The optical transmittance or continuity measurement equipment, if required, shall be as specified in the FOTPs discussed below, or shall use other sui
48、table means as specified in the detail specification. If optical continuity measurements are specified, use equipment as required by FOTP-32, or other appropriate means. If optical transmittance measurements are specified, use equipment as required by FOTP-20. As an alternative to the optical transm
49、ittance measurement, attenuation may be measured. To do so, use equipment as required by one of the following FOTPs: For multimode fibers: FOTP-46, FOTP-53, or FOTP-61. For single-mode fibers: FOTP-59, FOTP-61, or FOTP-78. 4 Sampling and specimens 4.1 The specimen shall be from a representative sample of fiber optic cable. 4.2 Unless otherwise specified, use a specimen at least 500 meters long. If optical testing is required, the length of the cable extending outside the chamber should not exceed 12 meters per end. If optical testing is not required, cap the cable ends to avoid leakage
