1、 TIA STANDARD FOTP-33 Optical Fiber Cable Tensile Loading and Bending Test TIA-455-33-B (Revision of TIA-455-33-A) January 2005 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance ANSI/TIA-455-33-B-2005 Approved:
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7、(From Standards Proposal No. 3-4870-RV2-A-1, formulated under the cognizance of the TIAFO-4.2 Subcommittee on Digital Multimode Systems.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2004 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer
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21、 ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-33-B FOTP-33 OPTICAL FIBER CABLE TENSILE LOADING AND BENDING TEST Contents Section Page Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii 1. INTRODUCTION . . . . .
22、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. NORMATIVE REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3. APPARATUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4. SAMPLING AND SPECIMENS . . . . . . . . . . . . . . . . . . . .
23、. . . . 3 5. PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6. CALCULATIONS OR INTERPRETATIONS OF RESULTS . . . 6 7. DOCUMENTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8. SPECIFICATION INFORMATION . . . . . . . . . . . . . . . .
24、 . . . . . 7 ANNEX A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Page i Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-33
25、-B This page left blank Page ii Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-33-B FOTP-33 OPTICAL FIBER CABLE TENSILE LOADING AND BENDING TEST Foreword (This foreword
26、 is informative only and is not a part of this standard.) (From EIA Standard Proposal No. 4870, formulated under the cognizance of the TIA FO-6.7 Subcommittee on Optical Fiber Cable.) NOTE: This FOTP was previously published in Recommended Standard EIA-455-33. This FOTP is a part of the series of te
27、st procedures included within Recommended Standard TIA/EIA-455. Key Words: tensile test optical fiber cable tensile test Page iii Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,
28、-TIA-455-33-B This page left blank Page iv Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-33-B FOTP-33 OPTICAL FIBER CABLE TENSILE LOADING AND BENDING TEST 1. INTRODUCT
29、ION This test is intended to verify the ability of an optical fiber cable to perform satisfactorily as required by Detail Specifications (a) while undergoing tensile and bending forces and (b) after undergoing tensile and bending forces. NOTE: This procedure is frequently used in concert with FOTP-3
30、8, Measurement of Fiber Strain in Cables Under Tensile Load. Users are cautioned that the Detail Specification generally inserts specific steps from FOTP-38 into the procedure of this FOTP. 2. NORMATIVE REFERENCES The following documents form a part of this FOTP to the extent specified herein: EIA/T
31、IA-455-B Standard test procedures for fiber optic fibers, cables, transducers, sensors, connecting devices and other fiber optic components FOTP-20 (TIA/EIA-455-20A) Measurement of Change in Optical Transmittance FOTP-38 (TIA/EIA-455-38) Measurement of Fiber Strain in Cables Under Tensile Load FOTP-
32、61 (TIA/EIA-455-61A) Measurement of Fiber or Cable Attenuation Using an OTDR FOTP-78 (TIA/EIA-455-78B) Spectral Attenuation for Cutback Measurements for Single-mode Optical Fibers 3. APPARATUS 3.1 A suitable device for measuring optical power transmission is required. (See paragraph 5.3). 3.2 A suit
33、able device is necessary to apply a tensile load to the test cable. An example of the basic testing apparatus and test set-up is shown schematically, in Figure 1. Unless otherwise specified by the Detail Specification, the test equipment shall be as specified in 3.2.1-3.2.7: Page 1 Copyright Telecom
34、munications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-33-B Pulling Gear Direction of Applied Force Cable Ends 15 25 m typical(50 80 ft) B A Fixed MandrelRotating Sheaves Load Cell Optical Test
35、 EquipmentFIGURE 1- Optical Fiber Cable Tensile Loading and Bending Test 3.2.1 One end of the test apparatus (End B) shall essentially consist of a minimum of three rotating sheaves mounted on an axle. 3.2.2 The other end of the test apparatus (End A) shall essentially consist of a minimum of two ro
36、tating sheaves mounted on an axle. 3.2.3 Unless otherwise specified by the Detail Specification, the sheave diameter shall be less than or equal to 40X the cable outside diameter. For cables less than 14 mm (0.55 in) in outer diameter, a universal sheave diameter of 560 mm (22 in) may be used. 3.2.4
37、 Two fixed-position mandrels shall be used, one on each end of the cable sample under test, to couple the optical fibers to the other cable components, and to apply the tensile force to the cable. Note: Another common test set-up is to mount the fixed mandrels on the same movable axel as the sheaves
38、 specified in 3.2.2. See subclause 5.6 for guidance on loading different test set-up configurations. 3.2.5 The mandrels used to couple the fiber and cable shall be large enough to avoid inducing loss in the cable wrapped around them. Page 2 Copyright Telecommunications Industry Association Provided
39、by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-33-B 3.2.6 The length between ends A and B (see Figure 1) of the test apparatus shall be such that a minimum total sample length of 100 meters (330 feet) can be achieved with a min
40、imum of five turns of cable. 3.2.7 The tensile load shall be applied by a tensile machine or similar device, with the applied force measured by a load cell or dynamometer having a minimum accuracy of 5% of the total tensile load to be applied. NOTE: Alternative test configurations are acceptable pro
41、vided that the required total length to be stressed can be accommodated and the required tensile loads can be attained and properly distributed throughout the cable. For example, additional sheaves could be used with more strands to reduce the total length of the apparatus; also, all sheaves could b
42、e mounted on fixed shafts with force applied to pull only one cable end. 4. SAMPLING AND SPECIMENS The cable length under tensile load shall be as per 3.2.6. 5. PROCEDURE 5.1 Overview 5.1.1 Measurement condition definitions Test Condition Designation TEST SPECIMEN CONFIGURATION I II III Unloaded (be
43、fore any loading) X Loaded (load applied) X Cable Specimen in test configuration (wound on sheaves and mandrels per Figure 1) Unloaded (after load has been relieved) X Page 3 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or netw
44、orking permitted without license from IHS-,-,-TIA/EIA-455-33-B 5.1.2 Test Conditions 5.1.2.1 Test Condition I provides the optical power transmission of the cable in the extended, non-loaded condition on the tensile tester. 5.1.2.2 Test Condition II is used to determine optical changes produced by c
45、ontinuous (static) loading as might be expected during cable use. Test Condition II may be a single load or a set of loads. The default Test Condition II loading for this procedure is to apply the lowest load subsequently followed by increasingly higher loads at which optical measurements are to be
46、made. In cases where a high load is designed to represent a rated installation load, and a correspondingly lower load is to represent post-installation loading, the higher load shall be applied first. Note: Results from Test Condition II allow a comparison and points out changes in optical power tra
47、nsmission and attenuation between the non-loaded versus loaded test conditions. 5.1.2.3 Test Condition III is a check to assure that any changes induced by short-term loading are reversible. 5.1.3 Measurement conditions and performance limits shall be as established by appropriate individual Detail
48、Specifications, depending upon design and intended application of the particular fiber optic cable. 5.2 Unless otherwise specified, the test cable shall be preconditioned for 24 hours at standard atmospheric conditions as outlined in Recommended Standard EIA/TIA-455B and tested under these condition
49、s. 5.3 Attenuation Change Measurement The cable shall be prepared and tested to check for changes in optical transmittance in accordance with FOTP-20. Alternatively, methods that measure attenuation such as FOTP-78 may be used and the results converted to transmittance values. Methods other than FOTP-20 shall be used only if they provide procedures for meas
