1、ANSI/TIA/EIA-455-5C-2002 Approved: June 6, 2002 Representing the telecommunications industry in association with the Electronic Industries Alliance NOTICE TIA/EIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufactur
2、ers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards and Publications shall not in any respect preclude any member or nonmembe
3、r of TIA/EIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than TIA/EIA members, whether the standard is to be used either domestically or internationall
4、y. Standards and Publications are adopted by TIA/EIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, TIA/EIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publicatio
5、n. This 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
6、before its use. (From Standards Proposal No. 3-4637-RV3, formulated under the cognizance of the TIA FO-6.3 Subcommittee on Interconnecting Devices and Passive Components.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2002 Standards and Technology Department 2500 Wilson Boulevard Arlington, V
7、A 22201 U.S.A. PRICE: Please refer to current Catalog of EIA ELECTRONIC INDUSTRIES ALLIANCE STANDARDS and ENGINEERING PUBLICATIONS or call Global Engineering Documents, USA and Canada (1 -800-854-7 179) International (303-397-7956) All rights reserved Printed in U.S.A. NOTICE OF DISCLAIMER AND LIMIT
8、ATION OF LIABILITY The document to which this Notice is affixed has been prepared by one or more Engineering Committees of the Telecommunications Industry Association (“TIA”). TIA is not the author of the document contents, but publishes and claims copyright to the document pursuant to licenses and
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14、 WITH ANY APPLICABLE STATUTE, RULE OR REGULATION. OR USE, ITS MERCHANTABILITY AND ITS NON-INFRINGEMENT OF ANY THIRD TIA SHALL NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIRECT, ARISING FROM OR RELATING TO ANY USE OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDI
15、RECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DA
16、MAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. FOTP- 5 Humidity Test Procedure for Fiber Optic Components Contents Foreword 1 Introduction 2 Applicable Documents 3 Apparat
17、us 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 1 2 3 4 5 14 14 15 17 i TIA/EIA-4 5 5 - 5 C This page left blank. 11 TIA/EIA-45 5-5
18、 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. 4635-RV3, formulated under the cognizance of TIA FO-6.3, Subcommittee on Fiber Optic Interconnecting Devices. This FOTP is part
19、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 TIA/EIA-4 5 5 - 5 C This page left blank. iv TIA/EIA-45 5-5 C 1 Introduction 1.1 Intent The intent of this test is to evaluate the optical an
20、d material properties of fiber optic components as they are influenced or deteriorated by the effects of high humidity and heat conditions. The procedure is applicable to all types of fiber optic devices including connectors (or composite fiber optic and electrical interconnecting devices), splices,
21、 passive branching devices (couplers), etc. This is an accelerated environmental test, accomplished by the continuous exposure of the specimen to high relative humidity at various temperatures. Measurements made under high humidity conditions may reflect only the peculiar conditions under which the
22、readings were made; as such, they should be compared to initial readings only when careful analysis indicates that such a comparison 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 Humidit
23、y-Temperature Cycling Tests. Method A imposes a vapor on the material under test that constitutes the force behind moisture migration and penetration. Hygroscopic materials are sensitive to moisture and may deteriorate rapidly under humidity conditions. Absorption of moisture may result in swelling
24、that would destroy functioning utility, and cause loss of physical strength and change in other important mechanical properties. Degradation of optical properties (and of electrical properties in composite devices) may also occur. Although not necessarily intended as a simulated tropical test, this
25、test can, nevertheless, be useful in determining moisture absorption of insulating or covering materials. Methods B and C obtain their added effectiveness by employment of temperature cycling that provides a breathing action, thereby inducing accelerated corrosion processes and the introduction of m
26、oisture into partially sealed devices. This condition imposes a vapor pressure on the device which constitutes the major force behind the moisture migration and penetration. 1.3 Composite devices 1 TIA/EIA-45 5-5 C When specified in the Detail Specification for composite devices, a dc polarizing pot
27、ential 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 negative. 1.4 Precautions Any special prec
28、autions 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 (TWEN-455- 13A) FOTP-20 (TIA/EIA-455-20A)
29、 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 Mechanical Inspection of Fiber, Optic Com
30、ponents, 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 interconnecting devices and passive com
31、ponents -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 TIA/EIA-45 5-5 C IEC 6 1300-2-461 IEC 6 1300-
32、2-48 Fibre optic interconnecting devices and passive components -Basic test and measurement 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
33、: Tests - Temperature-humidity cycling 3 Apparatus The following apparatus and equipment are 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
34、trap-vented to the atmosphere to prevent the buildup of total pressure. 3.2 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,
35、they shall be capable of being read with a resolution within 0.6 OC (1 OF) or 3% relative 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 w
36、ick at least once every 30 days. NOTE - For Method A, Test Condition E, clean the bulb and tank and install a new wick at the conclusion of each 56 day test. 3.3 Temperature recording device When published 3 TIA/EIA-45 5-5 C Use a temperature recording device (or devices) to provide a record of cham
37、ber 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 recording of temperatures measured at several points around the sample. 3.4 Air velocity
38、 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 volume of 1 cubic meter, air flow shall be 5 cubic meters per minute minimum; for
39、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 not exceed 46 m/min ( 1 5 O ft/min). 3.5 Moisture source Use steam or distilled,
40、 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 be available as required by FOTPs -13, -20, -34, or - 107 (or other). 4 Sampling
41、 and specimens 4.1 Samples Select samples randomly from production lots of the component to be tested. 4.2 Specimen preparation 4 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 sha
42、ll be mated, and with the specified number of contacts 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 on
43、e of the following methods. 5.1 Method A: Steady state 5.1.1 Preconditioning If specified in the Detail Specification, condition the specimens for a period of 24 hours in a dry oven (33% maximum relative humidity) at a temperature of 50 f 5 “C before subjecting to any humidity exposure. Prior to sta
44、rting test, the internal chamber temperature shall be at standard ambient temperature per TIA/EIA-455-B, and the humidity shall be uncontrolled. 5.1.2 Specimen mounting Install each specimen to be tested in the test chamber. Unless otherwise specified, the specimens and any attached optical, electri
45、cal, or composite cables, together with associated text fixtures, shall be normally positioned in the chamber so that there will be no restriction of the air flow. Place each specimen such that it cannot contact any other specimen and so that each specimen will be exposed to the same humidity as eve
46、ry other specimen. Mount each specimen such that the cable, fibers or wires (composite devices) descend to the optical components. There shall be no drip loops in the cable, fibers or wires. Splices and connectors used for optical connection to the specimen shall be outside the test chamber. If a tr
47、ansfer between chambers must be made during the test, the mounting shall be such that specimens are not disturbed during such transfers. For composite components containing both optical and electrical transmission members, if required, the monitoring and wiring of electrical channels shall be specif
48、ied in the 5 TIA/EIA-45 5-5 C Test Condition A B C D E Detail Specification. If required, extend necessary cables and leads out of the chamber through access ports. Length of Test Hours (Days) 96 (4) 240 (10) 336 (14) 504 (21) 1344 (56) 5.1.3 Initial measurements and observations At the end of the i
49、nitial conditioning period and before humidity-temperature exposure, make any measurements (dimensional, optical, electrical) that are required by the Detail Specification. Make visual and physical examinations in accordance with FOTP- 13 and measure the optical transmittance of all fibers in accordance with the requirements of FOTP-20. (Use of FOTP-34 to measure insertion loss may be specified by the Detail Specification as an alternative to FOTP-20). Additionally, FOTP- 107 may be specified in the Detail Specification to measure return loss. Make other measurements as specified.
