1、ANSI/TIA/EIA-455-88-2001 Approved : June 5, 2 O O 1 NOTICE TIA/EIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandmgs between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting th
2、e 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 nonmember of TIA/EIA from manufacturing or selling products not codorming to such Standards and Publicati
3、ons, 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 internationally. Standards and Publications are adopted by TIA/EIA in accordance with the American National Stan
4、dards Institute (ANSI) patent policy. By such actio% TMIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. This Standard does not purport to address all safety problems associated with its use or all applic
5、able 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 before its use. (From Standards Proposal No. 4507, formulated under the cognizance ofthe TIA FO-6.7 Su
6、bcommittee on Cables.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 200 1 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 2220 1 PRICE: Please refer to current Catalog of EIA ELECTRONIC INDUSTRIES ALLIANCE STANDARDS and ENGINEERING PUBLICATIONS or call Global Engineer
7、ing Documents, USA and Canada (1-800-854-7179) International (303-397-7956) All rights reserved Printed in U.S.A. TINE IA-455-88 FOTP . 88 Fiber Optic Cable Bend Test Con tents . Foreword . i i i 1 Introduction . 1 2 Normative references 1 3 Apparatus 2 4 Sampling and specimens 3 5 Procedure . 4 6 C
8、alculations or interpretation of results . 5 7 Documentation 5 8 Specification information . 6 Annex A Supplementary DoD Requirements 7 Annex B Comparison Between this FOTP and IEC or ITU/T Requirements . 7 i TINE IA-455-88 This page left blank. ii TINE IA-455-88 FOTP - 88 Fiber Optic Cable Bend Tes
9、t Foreword (This Foreword is informative only and is not part of this Standard. ) This document comes from TIA Project No. 4507, formulated under the cognizance of TIA FO-6.7, Subcommittee on Fiber Optic Cables. This FOTP is part of the series of test procedures included within Recommended Standard
10、TINE IA-455. There are two annexes. Annex A is normative and is considered a part of this standard; Annex B is informative. Key words: optical cable, bending. iii TINE IA-455-88 This page left blank. iv TINE IA-455-88 FOTP - 88 Fiber Optic Cable Bend Test 1 INTRODUCTION 1.1 Intent The intent of this
11、 bend test is to determine the degree of cable degradation that will occur if the cable is statically bent around a corner of a given radius. Cables that are most likely to be subject to this type of bend in actual installation are building entrance cables, flexible cables and buried service type ca
12、bles. 1.2 Potential failure modes Potential failure modes for this test include: a) Optical performance degradation. b) Cracking, splitting, or tearing of cable jacket. c) Cable jacket deformation resulting in a permanent degradation of protection to the optical core of the cable. 2 NORMATIVE REFERE
13、NCES The following standards contain provisions, which through reference in this text constitute provisions of this Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this Standard are encouraged to inves
14、tigate the possibility of applying the most recent editions of the standards indicated below. ANSI and TIA maintain registers of currently valid national standards published by them. Test or inspection requirements may include, but are not limited to, the following references: FOTP-13 (TINEIA-455-1
15、3-1 996) Visual and Mechanical Inspection of Fiber Optic Components, Devices, and Assemblies. FOTP-20 (TINEIA-455-20-1 994) Measurement of Change in Optical Transmittance. 1 TINE IA-455-88 3 APPARATUS 3.1 Test fixture The testing fixture shall consist of: 3.1.1 A bench equipped with a mandrel or a ,
16、mer which provides a test edge that Ilows o e end of the cable to hang freely while providing a horizontal platform perpendicular to the free hanging end of the cable. The radius of the test edge shall be 15 times the cable diameter unless otherwise specified in the Detail Specification (see Figures
17、 1 and 2). 3.1.2 A restraining clamp located on the horizontal platform at least 20 cable diameters from the test edge which maintains the cable perpendicular to the test edge. The cable shall not slide in the clamp when axial force is applied as later described. Unless otherwise specified in the De
18、tail Specification, the clamp shall fasten to the strength members (see Figure 1). RESTRAINING CLAMP I FIBER OPTIC CABLE r= D= 15X THE CABLE DIAMETER OR PER DETAIL SPECIFICATION CABLE DIAMETER 11 r TESTFIBERS CLAMP IL! STRENGTH FORCE Figure 1: Fiber Optic Cable Bend Test Set-up Strength Member Attac
19、hment 2 TINE IA-455-88 FIBER OPTIC CABLE r = 15X THE CABLE DIAMETER Figure 2: Fiber Optic Cable Bend Test Set-up Cable Jacket Attachment OR PER DETAIL SPECIFICATION - 3.1.3 Another clamp, or equivalent, to apply the test mass to the free hanging end of the cable in a direction perpendicular to the h
20、orizontal platform. The cable shall not slide in this second clamp or fixture when axial force is applied as later described. Unless otherwise specified in the Detail Specification, the clamp shall fasten to the strength members (see Figure 1). CLAMP 4 SAMPLING AND SPECIMENS 4.1 Test sample The spec
21、imen length shall be a minimum of 4 m (13 ft) unless otherwise specified in the Detail Specification. 3 TINE IA-455-88 5 PROCEDURE 5.1 Visually examine the cable using the procedure described in FOTP-13 (TIA/EIA-455-13), “Visual and Mechanical Inspection of Fiber Optic Components, Devices, and Assem
22、blies.” Use 1 O-power magnification to examine the cable jacket for cracks, splits, tears, deformations, or other signs that the jacket integrity has been compromised since the manufacturing process. 5.2 Place two marks on the test sample cable at least 40 cable diameters apart. 5.3 Strip the cable
23、jacket from each end of the cable as appropriate to allow access to the strength members (unless otherwise specified in the Detail Specification) and to the optical fibers. Do not bend the fibers beyond their specified minimum bend radius at their exit point from the cable. The jacket shall not be c
24、ut between the two marks of clause 5.2. 5.4 Attach fiber optic connectors or other appropriate optical loss interconnecting devices for optical measurements as required by the Detail Specification. 5.5 Take initial optical measurements as required by the Detail Specification. 5.6 At the location of
25、the marks on the cable, attach the clamps to the cable strength members; alternatively, attach the clamps to the cable jacket (see Figure 2) when specified in the Detail Specification. Do not over clamp the cable, which would degrade the optical performance of the cable. 5.7 Place the cable in posit
26、ion over the mandrel or corner so that the mandrel or corner is approximately centered between the clamps. 5.8 Apply the test mass to the unrestrained cable end. The magnitude of the test mass shall be as indicated in Table I unless otherwise specified in the Detail Specification. Unless otherwise s
27、pecified, the force shall be a static (dead weight) load applied gradually, but within a short time frame (Le., not dropped suddenly). Any resulting movement of the cable at the second clamp shall not exceed 50 mm (2 inches) per second. 4 TINE IA-455-88 Table I I Cable Diameter - Nominal Millimeters
28、 2.5 and less 2.6 to 6.4 6.5 to 12.7 12.8 to 15.0 15.1 to 17.9 18.0 to 20.0 20.1 to 22.9 30.0 and over Inches (0.100 and less) (0.101 to 0.251) (0.252 to 0.500) (0.501 to 0.590) (0.591 to 0.700) (0.701 to 0.790) (0.791 to 0.900) (0.901 and over) Test Mass Kilocirams 5 10 12.5 15 20 22.5 25 30 Slucis
29、 0.34 0.69 0.86 1 .O3 1.38 1.53 1.72 2.06 5.9 Apply maximum specified test mass to the test sample for one (1) minute. 5.10 Remove the test mass. Remove the clamps. 5.1 1 Perform the post-test optical measurements required by the Detail Specification. 5.12 Visually examine the cable using the proced
30、ure described in TINEIA-455-13 under 10- power magnification for cracks, splits, tears, deformations, or other signs that the jacket integrity has been compromised. 6 CALCULATIONS OR INTERPRETATIONS OF RESULTS Not applicable. 7 DOCUMENTATION 7.1 Report the following information for each test: 7.1.1
31、Title of test 7.1.2 Test Date 7.1.3 Sample description. 5 TINE IA-455-88 7.1.4 Optical test methods used. 7.1.5 Maximum test mass applied. 7.1.6 Length of cable between clamps. 7.1.7 Results of specified examinations and optical measurement results. 7.1.8 Pass and fail criteria. 7.2 United States mi
32、litary applications require that the following information also be reported for each test. For other (nonmilitary) application, this information need not be reported but shall be available for review upon request. 7.2.1 Test personnel. 7.2.2 Test equipment used and the date of the most recent calibr
33、ation. 8. O SPEC I FI CATI ON I N FORM AT1 ON The following details shall be specified in the Detail Specifications: 8.1 Quantity of samples to be tested. 8.2 The method of fastening the clamps, or equivalent, to the cable test sample, if other than as specified (clause 3.1.2 and clause 3.1.3). (Dep
34、ending upon the anticipated method of field installation, it should be specified whether the clamps are to be attached to the cable strength members or to the cable outer jacket.) 8.3 The radius of the mandrel or corner. 8.4 The mass(s) to be applied, if other than as specified in clause 5.8. 8.5 Te
35、st force rate of application, if other than as specified in clause 5.8. 8.6 Optical tests to be performed before and after the test. 8.7 Failure criteria - mechanical and optical. 8.8 The temperature at which the test shall be performed. 6 TINE IA-455-88 Annex A (normative) Supplementary DoD require
36、ments The following supplementary requirements shall apply only when specified by the purchaser in the inquiry, contract, or order for non-military agencies of the U.S. Government; these supplementary requirements automatically apply whenever FOTP-88 is specified in U .S. military documents for any
37、U.S. Military application. Al. ADDITIONS, DELETIONS AND EXCEPTIONS TO TIAIEIA-455-88 Al.l TEST EQUIPMENT Al.l .I Figures 1 and 2. Delete the existing figures and replace with the following figure: RESTRAINING CLAMP 1 FIBER OPTIC CABLE r r = 2.5 TIMES THE OUTER DIAMETER OF THE FORCE Figure AI. Fiber
38、Optic Cable Bend Test Set-up. A1.2 TEST PROCEDURE A1.2.1 Clause 5.4. Delete the existing paragraph and replace with the following paragraph: “The induced attenuation of each fiber shall be measured for the duration of the bend test in accordance with FOTP-20, (TIA/EIA-455-20), Measurement of Change
39、in Optical Transmittance, utilizing a monitor fiber to evaluate the change in attenuation.” A1.2.2 Clause 5.5. Delete the existing paragraph and replace with the following paragraph: “A pretest optical power measurement shall be made in accordance with FOTP-20.” 7 TINE IA-455-88 A1.2.3 Clause 5.8 an
40、d 5.9, and Table I. Delete the existing paragraphs and Table I and replace with the following paragraph: “Secure the test specimen to the testing surface and apply a mass, as shown, to the specimen for a period of one minute. The magnitude of the applied force (due to the test mass) shall be as give
41、n by the equation: F = 1000*D (in Newtons (N) where: D = Cable Diameter in cm or 500 N, whichever is less. Visual inspection of the specimen shall be made after load removal, using 10 power magnification.” A1.2.4 Clause 5.1 1. Delete the existing paragraph and replace with the following paragraph: “
42、A final optical power measurement shall be made in accordance with FOTP-20. All optical power measurements, subsequent to the pretest measurement shall be referenced to the pretest value and the change in dB calculated.” 8 TINE IA-455-88 Annex B (informative) Comparison Between this FOTP and IEC or
43、ITU/T Requirements TIAS FO-6 Committee and its various subcommittees have an established policy of making every reasonable effort to “harmonize” its test methods with those of IEC (International Electrotechnical Commission) and ITU-T (International Telecommunication Union- Telecommunication Standard
44、ization Sector). B.l IEC There are no references to any test equivalent to this FOTP known to exist in IEC documents. B.2 ITU/T There are no references to any test equivalent to this FOTP known to exist in ITU/T documents. 9 TINE IA-455-88 FOTP FOTP BACKGROUND DATA FIBER OPTIC TEST PROCEDURES PROPOS
45、ED AS ADDENDUMS TO ElMIA-455 Project Document Ballot level Number 88 0 FO-6 Committee x SP Standards number date PN-4507 711 7100 letter ballot Proposal AUTHOR ANDIOR PREFERRED CONTACT (NAME, ADDRESS, TELEPHONE): Gair Brown Naval Surface Warfare Center Code B35 17320 Dahlgren Road Dahlgren, VA 22448
46、-5100 f540)-653-1579 SUBCOMMITTEE ORIGIN OF THIS FOTP: SC: FO-6.7 CHAIRPERSON: E. Loytty FOTP SOURCES (Reference documents and other sources used in preparation of this FOTP): COMMERCIALIMILITARYIFEDERAL TEST METHODS: TECHNICAL ARTICLES: OTHER SOURCE MATERIAL: PREVIOUS FOTP USAGE (References shown a
47、s amrotxiate): THIS FOTP REPRESENTS: 0 OTHER THAN GIVEN BELOW (see “Other Information”) n u A NEW CONCEPTUAL METHOD, n VERIFIED IN PRELIMINARY LABORATORY TESTING.* 0 NOT VERIFIED IN ANY LABORATORY TESTING. x AN ESTABLISHED METHOD, 0 USED WITH ELECTRICALIELECTRONIC AND OTHER COMPONENTS, BUT NOT PREVI
48、OUSLY APPLIED TO FIBER OPTICS. 0 VALIDATED IN MULTIPLE LABORATORY USE.* x 0 INTENDED PRIMARILY FOR MANUFACTURING LEVEL TEST.# USED IN LABORATORY AND MANUFACTURING PROCESSES.*# REFERENCES: * LABORATORIES #REPRESENTATIVE MANUFACTURERS many many WHEN USED (Additional pages used as necessary) Page 1 of
49、2 Pages 10 TINE IA-455-88 FOTP BACKGROUND (Continued) COMMENTS ON ACCURACY (OR POTENTIAL ACCURACY). REPEATABILITY, ETC., OF THE FOTP: (If Precision and Bias Statements are not included in the FOTP) STATUS - INTERNATIONAL FOTP COORDINATION: COMPARABLE IEC TEST x NONE 0 INCLUDED IN FOTP REFERENCES IEC PUBLICATION: EDITION: DATE: PUBLICATION TITLE SECTION OR CLAUSE NO.: 0 IEC-RTM OIEC-ATM 0 NEITHER PROCEDURES PRODUCE EQUIVALENT RESULTS: 0 YES 0 NO 0 UNCERTAIN/ DONT KNOW KEY DIFFERENCES, IEC vs. FOTP: 0 DISCUSSED IN FOTP ANNEX A COMPARABLE ITU TEST x NONE 0 INCLUDED IN FOTP REFERENCES CCI
