1、 TIA STANDARD FOTP-104 Fiber Optic Cable Cyclic Flexing Test TIA-455-104-A May 1993 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance ANSI/TIA/EIA-455-104-A-1993Approved: May 14, 1993Reaffirmed: July 20, 2000Re
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6、dard 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 before its u
7、se. (From Standards Proposal No. 3-4764-RF2, formulated under the cognizance of the TIAFO-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 refer to c
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21、leNo reproduction or networking permitted without license from IHS-,-,-Section APPENDIX Figure 1 Table I Table I1 Table XI: FOTP-104 FIBER OPTIC CABLE CYCLIC FLEXING TEST TABLE OF CONTENTS INTRODUCTION APPLICABLE DOCUMENTS APPARATUS SAMPLING AND SPECIMENS PROCEDURE CALCULATIONS OR INTERPRETATION OF
22、RESULTS DOCUMENTATION SPECIFICATION INFORMATION COMPARISON BETWEEN FOTP-104 AND IEC, ISO, AND CCITT REQUIREMENTS Typical Cyclic flexing Apparatus Sheaf Diameters Tensile Loading (Nonmilitary) Tensile Loading (U.S. Military Only) Copyright Telecommunications Industry Association Provided by IHS under
23、 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 without license from IHS-,-,-TIA-455-104-A Page 1 FIBER OP
24、!lTC CABLE CNCLIC FLEXING TEST (From EIA Standards Proposal No. 2912, formulated under the cognizance of TIA FO-6.4, Subcommittee on Fiber Optic Test Methods and Instrumentation, and TIA FO-6.7, Subcommittee on Fiber Optic Cable.) This FOTP is part of the series of test procedures included within Re
25、commended Standard EIA/TIA-455. NOTE : This FOTP was originally published in EIA-455-104 as FOTP-104. 1. INTRODUCTION 1.1 Intent, The intent of this test is to determine the effects of repeated flexions on a fiber optic cable. These flexions may be performed at some specified temperature. 1.2 Scope.
26、 This procedure is designed to measure permanent and/or transient optical transmittance changes and requires the assessment of any damage occurring to other cable components. 1.3 Failure Modes- Potential failure modes for this test include, but are not limited to: a. Loss of optical continuity, eith
27、er during or at the end of the test, Degradation transmittance performance, c. Fiber breakage or other physical damage, a. Other failure modes as may be stated in the Detail Specification. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reprod
28、uction or networking permitted without license from IHS-,-,-TIA-455-104-A Page 2 2. APPLICABLE DOCUMENTS The following documents form a part of this FOTP to the extent specified herein: “Standard Test Procedures for Fiber Optic Fibers, Cables, Transducers, Sensors, Connecting and Terminating Devices
29、, and Other Fiber Optic Components“ FOTP-13 (EIA-455-13) “Visual and Mec:.mical Inspection of Fiber, Cables, Connectors and/or Other Fiber Optic Devices“ FOTP-20 (EIA/TIA-455-20A) “Measurement of Change in Optical Transmittance“ CEI IEC 794-1, Second Ed. “Optical Fibre Cables, Part 1: Generic Specif
30、icationw .Method IEC 794-1-E6 “Repeated Bending“ CEI IEC 794-2, Second Ed. “Optical Fibre Cables, Part 2: Product Specifications“ 3. APPARATUS The following apparatus and equipment is required to perform this test: 3.1 Device For Verifying The Number of Transmitting Fibers. If measurements of change
31、 in optical transmittance are not required, use any any suitable equipment to determine the number of transmitting fibers. (Note: Wherever the term, “number of transmitting fibers,“ appears in this procedure, it shall be understood to mean the number of fibers displaying optical continuity.) 3.2 Dev
32、ice For Measuring Optical .Power Transmission. If measurements of change in optical transmittance are required, use a suitable device for measuring optical power transmission as described in FOTP-20. Operating wavelengths and modulation methods shall be as specified in the Detail Specification. In p
33、rocess of preparation. Pending publication of this revision, use ANSI/EIA RS-455-20. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-104-A Page 3 3.3 Flexing Device, Use
34、 a suitable flexing device, such as illustrated in Figure 1. The flexing arm shall have an adjustable clamp or fixture to permit holding the cable securely during the entire test. The clamping fixture shall not crush the optical fibers during the test. Unless otherwise specified in the Detail Specif
35、ication, the flexing arc shall be + 90“ from the reference position, and the flexing speed shall be 30 cycles per minute. (Devices having adjustable flexing arcs and adjustable flexing speeds may be used if not prohibited by the Detail Specification, but the amount of swing of the cable shall be lim
36、ited. ) cl 4 216 mm (85 In) mln. / / I I I i I 457 mm (18.0 In.) mln. Source - Mass (see appropriate table) L - -c To Detector Figure 1 Typical Cyclic Flexing Apparatus Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking
37、 permitted without license from IHS-,-,-TIA-455-104-A Page 4 3.4 Flexing Sheaves. (Note: The term, “sheaves“ as used throughout this procedure shall be understood to mean any appropriate flexing plates, mandrels, etc. used to control the configuration of the cable bend, and is not intended to requir
38、e the use of true sheaves or grooved wheels.) Attach pairs of sheaves at a definite distance from the flex arm clamp, positioned such that they will not prevent free movement of the cable. It is recommended that there be 1 to 3 mm of clearance on each side between the cable and the sheaves in order
39、to prevent undue friction on the cable at the flexing point. Use sheaves as shown in Figure 1 and as listed in Table I. Unless otherwise specified in the Detail Specification, the following default values apply: 3.4.1 For all except U.S. Military applications, use sheaves per Table I, Sheave Designa
40、tion Letter B. 3.4.2 For U.S. Military applications only, use sheaves per Table I, Sheaf Designation Letter E. Table I Sheaf Diameters SHEAF MAXIMUM SHEAVE DESIGNATION DIAMETER AS A MULTIPLE OF LETTER CABLE OUTSIDE DIAMETER As specified in the Detail Specification 3.5 Force on the Cable or Load Weig
41、hts (Mass). Apply sufficient force to the cable to keep it in contact with the sheaves while flexing. Manual force or weights may e used. If flexing under specific tensile load is required, it shall be specified in the Detail Specification. When used, weights (mass) shall be attached to or suspended
42、 from the cable under test. The minimum load to be applied is usually dependent upon the outside diameter (and, to some extent, the stiffness) of the cable under test. Increase the load if necessary to ensure full quadrant contact of the cable with the sheaves during testing. Unless otherwise specif
43、ied in the Detail Specification: Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-104-A Page 5 3.5.1 Unless otherwise specified, and for all except U.S. Military applicat
44、ions, manual force or weights may be used. If weights are used, use the minimum weights specified in Table 11. Table I1 Tensile Loading (Nonmilitary) Nominal Cable Diameter Ranqe Minimum Load mm ( in. 1 kq Weiqht N 3.5.2 For U.S. Military applications only, use minimum weights as specified in Table
45、111. Table I11 Tensile Loading (U.S. Military Only) Nominal Cable Diameter Range Minimum Load mm in. ) kg Weiqht N 3.6 Environmental Chamber and Associated environmental chamber and/or associated equipment required for nonmilitary applications. For applications only, unless otherwise specified Speci
46、fication: Equipment. An is not normally U. S. Military in the Detail Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-104-A Page 6 Use a suitable environmental chamber th
47、at has an operational range sufficient to provide the temperature extremels) specified in the Detail Specification. The chamber shall maintain the required temperature within 21 oc (k1.8 OF) throughout the duration of the test. The chamber inside dimensions shall be sufficient to accommodate the phy
48、sical test apparatus and the specimen under test, and to permit unrestricted air flow around the apparatus and specimen. The chamber shall be equipped with an access port (or stuffing box) through which the fiber or cable ends and instrument wires or other leads will exit the chamber. The access por
49、t shall adequately seal the chamber around the extended cables, fibers, etc. that are exiting the chamber. 3.7 Temperature Recording Devices. If temperature recording is required (mandatory for U.S. Military applications, unless otherwise specified in the Detail Specification), the following criterion applies: Use temperature recording devices
