ANSI TIA EIA 455-5C-2002 Humidity Test Procedure for Fiber Optic Components《光纤元件的湿度试验规程》.pdf

1、ANSI/TIA/EIA-455-5C-2002 Approved: June 6, 2002 Representing the telecommunications industry in association with the Electronic Industries Alliance Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without li

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6、s. 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 before its use. (From Standards Proposal No. 3-4637-RV3, formulated under the cognizance of the TIA FO-6.3 Subcommittee on Interc

7、onnecting Devices and Passive Components.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2002 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of EIA ELECTRONIC INDUSTRIES ALLIANCE STANDARDS and ENGINEERING PUBLICATION

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18、TENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FOTP- 5 Humidity Test Procedure for Fibe

19、r Optic Components Contents Foreword 1 Introduction 2 Applicable Documents 3 Apparatus 4 Sampling And Specimens 5 Procedure 6 Calculations Or Interpretation Of Results 7 Documentation 8 Specification Information Annex A (informative) Comparison between FOTP-5 and IEC, ISO, and ITU/T requirements III

20、 1 2 3 4 5 14 14 15 17 i Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA/EIA-4 5 5 - 5 C This page left blank. 11 Copyright Telecommunications Industry Association Provided

21、by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA/EIA-45 5-5 C FOTP- 5 Humidity Test Procedure for Fiber Optic Components Foreword (This foreword is informative and is not part of this standard.) From TIA/EIA Standards Proposal No. 46

22、35-RV3, formulated under the cognizance of TIA FO-6.3, Subcommittee on Fiber Optic Interconnecting Devices. This FOTP is part of the series of test procedures included within Recommended Standard TINEIA-455. NOTE - This FOTP was previously published in TIA/EIA-455-5B as FOTP-5. . 111 Copyright Telec

23、ommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA/EIA-4 5 5 - 5 C This page left blank. iv Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for Res

24、aleNo reproduction or networking permitted without license from IHS-,-,-TIA/EIA-45 5-5 C 1 Introduction 1.1 Intent The intent of this test is to evaluate the optical and material properties of fiber optic components as they are influenced or deteriorated by the effects of high humidity and heat cond

25、itions. The procedure is applicable to all types of fiber optic devices including connectors (or composite fiber optic and electrical interconnecting devices), splices, passive branching devices (couplers), etc. This is an accelerated environmental test, accomplished by the continuous exposure of th

26、e specimen to high relative humidity at various temperatures. Measurements made under high humidity conditions may reflect only the peculiar conditions under which the readings were made; as such, they should be compared to initial readings only when careful analysis indicates that such a comparison

27、 is valid and applicable. 1.2 Scope Three methods for measuring the effects of humidity are described. Method A is a Steady State Test while Methods B and C are Humidity-Temperature Cycling Tests. Method A imposes a vapor on the material under test that constitutes the force behind moisture migratio

28、n and penetration. Hygroscopic materials are sensitive to moisture and may deteriorate rapidly under humidity conditions. Absorption of moisture may result in swelling that would destroy functioning utility, and cause loss of physical strength and change in other important mechanical properties. Deg

29、radation of optical properties (and of electrical properties in composite devices) may also occur. Although not necessarily intended as a simulated tropical test, this test can, nevertheless, be useful in determining moisture absorption of insulating or covering materials. Methods B and C obtain the

30、ir added effectiveness by employment of temperature cycling that provides a breathing action, thereby inducing accelerated corrosion processes and the introduction of moisture into partially sealed devices. This condition imposes a vapor pressure on the device which constitutes the major force behin

31、d the moisture migration and penetration. 1.3 Composite devices 1 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA/EIA-45 5-5 C When specified in the Detail Specification for

32、 composite devices, a dc polarizing potential shall be applied only between alternate electrical contacts connected together electrically, and the remaining electrical contacts and the shell connected together electrically. In such cases, the polarity of the voltage applied to the shell shall be neg

33、ative. 1.4 Precautions Any special precautions that must be followed in making measurements under high humidity conditions shall be specified in the Detail Specification. 2 Applicable documents The following documents form a part of this FOTP to the extent specified herein: TIA/EIA-455-B FOTP- 13 (T

34、WEN-455- 13A) FOTP-20 (TIA/EIA-455-20A) FOTP-34 (TWEIA-455-34A) FOTP- 107 (TWEN-455- 107A) MIL-STD- 1344A IEC 6 1300-2- 19 IEC 6 1300-2-2 1 Standard Test Procedure for Fiber Optic Fibers, Cables, Transducers, Sensors, Connecting and Terminating Devices, and Other Fiber Optic Components Visual and Me

35、chanical Inspection of Fiber, Optic Components, Devices and Assemblies Measurement of Change in Optical Transmittance Interconnection Device Insertion Loss Test Determination of Component Reflectance or Link System Return Loss Using a Loss Test Set Test Methods for Electrical Connectors Fibre optic

36、interconnecting devices and passive components -Basic test and measurement procedures -Part 2-19: Tests -Damp heat (steady state) Fibre optic interconnecting devices and passive components -Basic test and measurement procedures - Part 2-21: Tests - Composite temperature-humidity cyclic test 2 Copyri

37、ght Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA/EIA-45 5-5 C IEC 6 1300-2-461 IEC 6 1300-2-48 Fibre optic interconnecting devices and passive components -Basic test and measuremen

38、t procedures -Part 2-46: Tests -Damp heat, cyclic Fibre optic interconnecting devices and passive components -Basic test and measurement procedures -Part 2- 48: Basic test and measurement procedures - Part 2-48: Tests - Temperature-humidity cycling 3 Apparatus The following apparatus and equipment a

39、re required to perform this test: 3.1 Test chamber The test chamber and accessories shall be constructed and arranged in such a manner as to avoid condensate dripping on the test specimen. The chamber shall be trap-vented to the atmosphere to prevent the buildup of total pressure. 3.2 Relative humid

40、ity 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, they shall be capable of being read with a resolution within 0.6 OC (1 OF) or 3% relative

41、humidity (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 30 days. NOTE - For Method A, Test Condition E, clean the bulb and

42、 tank and install a new wick at the conclusion of each 56 day test. 3.3 Temperature recording device When published 3 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA/EIA-45

43、5-5 C Use a temperature recording device (or devices) to provide a record of chamber temperature throughout the test. The temperature recording device(s) shall have an accuracy off 1 “C across the full temperature range of the test. Use of a multi- channel recorder may be desirable to permit recordi

44、ng of temperatures measured at several points around the sample. 3.4 Air velocity and volume The air velocity flowing across the wet bulb shall be 275 m/minute (900 ft/minute) minimum. Circulate conditioning air at a minimum rate of five (5) times the chamber volume per minute (e.g., for a chamber v

45、olume of 1 cubic meter, air flow shall be 5 cubic meters per minute minimum; for a chamber volume of 5 cubic feet, air flow shall be 25 cubic feet per minute minimum). However, make provision for controlling the flow of air such that the velocity of air throughout the internal test chamber area does

46、 not exceed 46 m/min ( 1 5 O ft/min). 3.5 Moisture source Use steam or distilled, demineralized or deionized water to obtain the specified humidity. No rust or corrosion contaminants shall be imposed on the test samples by the test facility. 3.6 Other equipment Optical and other test equipment shall

47、 be available as required by FOTPs -13, -20, -34, or - 107 (or other). 4 Sampling and specimens 4.1 Samples Select samples randomly from production lots of the component to be tested. 4.2 Specimen preparation 4 Copyright Telecommunications Industry Association Provided by IHS under license with EIAN

48、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA/EIA-45 5-5 C Sampled components shall be fully assembled as intended for use in accordance with the manufacturers instruction. If the component is a connector, it shall be mated, and with the specified number of co

49、ntacts and termini. Sealing plugs, optical fiber cables, strain relief attachments and other hardware, and other end preparation requirements shall be as specified in the Detail Specification. 5 Procedure Measure the effects of humidity according to one of the following methods. 5.1 Method A: Steady state 5.1.1 Preconditioning If specified in the Detail Specification,