1、 TIA STANDARD FOTP-162 Optical Fiber Cable Temperature Humidity Cycling TIA-455-162-A (Revision of EIA-162) July 1999TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance ANSI/TIA/EIA-455-162A-1999Approved: July 21
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6、his Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations befo
7、re its use. (From Standards Proposal No. 3-3401-RF1, formulated under the cognizance of the TIA FO-4.2 Subcommittee on Optical Fibers and Cables). Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please r
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21、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-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 Optic Cables. This FOTP is part of
22、 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: Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction
23、or networking permitted without license from IHS-,-,-1 Introduction 1.1 Intent This test procedure describes a method for evaluating materials and properties of fiber optic cables when they are subjected to the cyclic effects of temperature and humidity. This is an accelerated environmental test des
24、igned to expose the cable to controlled high humidity at elevated temperatures, and to frozen moisture. The intent of this test method is to: 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 S
25、cope. This test procedure applies to the testing of optical fiber cable. Related tests for connectors and other devices which may be connected to cables under test are discussed in 1.5. 1.3 Background The elevated temperature cycling conditions impose a breathing action, potentially inducing corrosi
26、on processes which would allow moisture penetration and migration into all areas of the cable. The freezing temperatures test the ability of the cable components to resist cracking and blistering. The performance of a cable may be further evaluated after exposure to these temperature- humidity effec
27、ts by performing additional test procedures such as mechanical and/or optical tests as specified in the detail specification. 1.4 Procedure defaults. Clause 8 of this procedure, Specification information, defines the detailed requirements that are required to be specified in a detail specification i
28、n order to properly utilize this FOTP. “Default“ requirements are those that apply if no other alternative requirements are given in a detail 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 conve
29、nience 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 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,
30、and 5.5 Optical measurements are required: number of transmitting fibers, and optical transmittance or attenuation. 5.4, figure 1, and The cycle series comprises ten (1 0) cycles, and the table 2 test cycle is defined by figure 1 and the associated table 2. Copyright Telecommunications Industry Asso
31、ciation Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-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-
32、186-2E, FOTP-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 virtu
33、ally identical 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 cab
34、le. 2 Normative 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, cabl
35、es, transducers, 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 m
36、echanical inspection 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 Ass
37、essing Temperature 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
38、: FOTP-20, El 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-
39、53A A ttenuation 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
40、or cable attenuation 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) Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitt
41、ed without license from IHS-,-,-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-length multimode graded-index and single-mode optical fiber cable assemblies (July 1 987) 2.3 Users of this FOTP are
42、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 - Occasionally, a new edition of a referenced Standard may be so different from its previous edition that using it,
43、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 maintaining the temperature extremes and humidity specified. This equipment shall have the capability to change its
44、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 temperature within + 2 OC and the humidity within the ranges specified in figure 1 during the test. The volume of th
45、e 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 condensate on the test cable. The heat source shall be located such that radiant heat will not fall directly on the specimen.
46、 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 provide a record of the temperature and humidity throughout the test. 3.2.1 Relative humidity indicator. Determine rel
47、ative 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, they shall be capable of being read with a resolution within 1 OC or 3% RH. (Use of a recording device may be desirab
48、le 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 30 days, or at the conclusion of each test, if longer than 30 days. 3.2.2 Temperature recording device. The temperat
49、ure 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 temperatures 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. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for R
