1、ANSI/TIA/EIA-455-88-2001 Approved : June 5, 2 O O 1 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE TIA/EIA Engineering Standards and Publications are designed to serve t
2、he public interest through eliminating misunderstandmgs between manufacturers 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
3、 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 Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than TIA/EIA members,
4、 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 Standards Institute (ANSI) patent policy. By such actio% TMIA does not assume any liability to any patent owner, nor does it assume a
5、ny 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 applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health pr
6、actices 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 Subcommittee on Cables.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 200 1 Standards and Technology Department 2500 Wilson
7、 Boulevard Arlington, VA 2220 1 PRICE: Please refer to current Catalog of EIA ELECTRONIC INDUSTRIES ALLIANCE STANDARDS and ENGINEERING PUBLICATIONS or call Global Engineering Documents, USA and Canada (1-800-854-7179) International (303-397-7956) All rights reserved Printed in U.S.A. Copyright Telec
8、ommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted wi
9、thout license from IHS-,-,-Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINE IA-455-88 FOTP . 88 Fiber Optic Cable Bend Test Con tents . Foreword . i i i 1 Introduction . 1 2
10、 Normative references 1 3 Apparatus 2 4 Sampling and specimens 3 5 Procedure . 4 6 Calculations 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 Copyrig
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12、ResaleNo reproduction or networking permitted without license from IHS-,-,-TINE IA-455-88 FOTP - 88 Fiber Optic Cable Bend Test 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
13、, Subcommittee on Fiber Optic Cables. This FOTP is part of the series of test procedures included within Recommended Standard 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 Copyright T
14、elecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINE IA-455-88 This page left blank. iv Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for Resa
15、leNo reproduction or networking permitted without license from IHS-,-,-TINE IA-455-88 FOTP - 88 Fiber Optic Cable Bend Test 1 INTRODUCTION 1.1 Intent The intent of this bend test is to determine the degree of cable degradation that will occur if the cable is statically bent around a corner of a give
16、n 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 cables. 1.2 Potential failure modes Potential failure modes for this test include: a) Optical performance degradation. b) Cracking, sp
17、litting, 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 REFERENCES The following standards contain provisions, which through reference in this text constitute provisions of this Standard. At the
18、 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 investigate the possibility of applying the most recent editions of the standards indicated below. ANSI and TIA maintain registers of cur
19、rently 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 3-1 996) Visual and Mechanical Inspection of Fiber Optic Components, Devices, and Assemblies. FOTP-20 (TINEIA-455-20-1 994) Measurem
20、ent of Change in Optical Transmittance. 1 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINE IA-455-88 3 APPARATUS 3.1 Test fixture The testing fixture shall consist of: 3.1.1
21、 A bench equipped with a mandrel or a ,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 i
22、n the Detail Specification (see Figures 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 describe
23、d. Unless otherwise specified in the Detail 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
24、 Bend Test Set-up Strength Member Attachment 2 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINE IA-455-88 FIBER OPTIC CABLE r = 15X THE CABLE DIAMETER Figure 2: Fiber Optic
25、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 horizontal platform. The cable shall not slide in this second clamp or fixture when axial f
26、orce 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 specimen length shall be a minimum of 4 m (13 ft) unless otherwise specified in the Detail Spe
27、cification. 3 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINE IA-455-88 5 PROCEDURE 5.1 Visually examine the cable using the procedure described in FOTP-13 (TIA/EIA-455-13)
28、, “Visual and Mechanical Inspection of Fiber Optic Components, Devices, and Assemblies.” 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
29、 on the test sample cable at least 40 cable diameters apart. 5.3 Strip the cable 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
30、minimum bend radius at their exit point from the cable. The jacket shall not be cut 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 opti
31、cal measurements as required by the Detail Specification. 5.6 At the location of 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
32、 would degrade the optical performance of the cable. 5.7 Place the cable in position 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 T
33、able I unless otherwise specified in the Detail Specification. Unless otherwise specified, 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 in
34、ches) per second. 4 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINE IA-455-88 Table I I Cable Diameter - Nominal Millimeters 2.5 and less 2.6 to 6.4 6.5 to 12.7 12.8 to 15.
35、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 0.34 0.69 0.86 1 .O3 1.38 1.53 1.72 2.06 5.9 Ap
36、ply 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 procedure described in TINEIA-455-13 under 10- power m
37、agnification 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 Title of test 7.1.2 Test Date 7.1.3 Sample descr
38、iption. 5 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-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.
39、7.1.7 Results of specified examinations and optical measurement results. 7.1.8 Pass and fail criteria. 7.2 United States military applications require that the following information also be reported for each test. For other (nonmilitary) application, this information need not be reported but shall b
40、e available for review upon request. 7.2.1 Test personnel. 7.2.2 Test equipment used and the date of the most recent calibration. 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 fast
41、ening the clamps, or equivalent, to the cable test sample, if other than as specified (clause 3.1.2 and clause 3.1.3). (Depending 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
42、.) 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 Test 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 optica
43、l. 8.8 The temperature at which the test shall be performed. 6 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINE IA-455-88 Annex A (normative) Supplementary DoD requirements
44、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 U.S. M
45、ilitary 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 Optic
46、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 in Opt
47、ical 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 Copyright Telecommunications Industry Ass
48、ociation Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINE IA-455-88 A1.2.3 Clause 5.8 and 5.9, and Table I. Delete the existing paragraphs and Table I and replace with the following paragraph: “Secure the test specimen to t
49、he 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 given 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 aft
