1、ANSI/TIA/EIA-455-18-1998 Approved: October 1,1998 TIA/EIA STANDARD FOP-1 Cable Flexing for Fiber Optic Interconnecting Devices TIAEIA-455-1B (Revision of EIA-455-1A) OCTOBER 1998 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Copyright Electronic Industries Alliance Provided by IHS under license with EIANo
2、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE WEIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of
3、 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 nonmember of TIA/EZA from manufacturing or selling products not conforming to
4、such Standards and miblications, nor shail the existence of such Standards and Publications preclude their voluntary use by those other than WEIA members, whether the standard is to be used either domestically or internationally. Sandards and Publications are adopted by WEIA in accoTdiLI1ce with the
5、 American National Standards Institute (ANSI) patent policy. By such action, WEIA 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 ali safety problems associated wi
6、th its use or all applicable regulatory requirements. It is the responsibility of the user of this Stanard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal Nos. 2761-D and 2761-D-1, formulated u
7、nder the cognizance of the TIA FO-6.3 Subcommittee on Fiber Optic Interconnecting Devices). hiblished by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 1998 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 PRICE Please refer to current Catalog of EIA, JEDEC, and TIA STANDARDS a
8、nd ENGINEERING PUBLICATIONS or call Global Enginwring Documents, USA and Canada (1-800-854-7179) International (303-397-7956) AU rights reserved Printed in U.S.A. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted with
9、out license from IHS-,-,-STD-EIA TIA-455-LB-ENGL 1778 = 3234b00 Ob13bb4 023 TINEIA-455-1 B FOTP-1 Cable flexing for fiber optic interconnecting devices Con tents FOREWORD 111 1 INTRODUCTION . 1 1.1 INTENT . 1 2 3 4 5 6 7 8 . 9 . 1 o . NORMATIVE REFERENCES 2 APPARATUS 2 SAMPLING AND SPECIMENS 4 PROCE
10、DURES . 4 CALCULATIONS OR INTERPRETATION OF RESULTS . 6 DOCUMENTATION . 7 SPECIFICATION INFORMATION . 8 FIGURE 1, EXAMPLE OF FLEX TEST SETUP FOR MANUAL OPERATION . 9 FIGURE 2, EXAMPLE OF FLEX TEST SETUP FOR MOTOR DRIVEN OPERATION . 10 ANNEX A (INFORMATIVE) . I1 ITU-T 1 1 Al . IEC . 11 A2 . i Copyrig
11、ht Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD-EIA TIA-455-LB-ENGL 1778 D 323YbOO Obl3bb5 TbT TINEIA-455-1 B FOTP-1 Cable flexing for fiber optic interconnecting devices Foreword (This For
12、eword is informative only and is not part of this Standard.) This document comes from TIA Project No. 2761, and was formulated under the cognizance of TIA F0-6.3, Subcommittee on Fiber Optic interconnection Devices. This FOTP is part of the series of test procedures included within Recommended Stand
13、ard E WTlA-455. NOTE - This FOTP was originally published in EIA455-1A as FOTP-1. There is one informative Annex. Key words: cable flexing, multimode, single mode, interconnecting devices . III Previous page is blank Copyright Electronic Industries Alliance Provided by IHS under license with EIANot
14、for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD-EIA TIA-455-LB-ENGL 1998 3234b00 ObL3bbb 9Tb 9 TlNEIA-455-I B - I Introduction 1.1 intent This test is intended to determine the ability of fiber optic interconnecting devices, device interfaces, and strain reliefs to
15、 withstand bending and flexing stresses resulting from loads as might be experienced during installation and service conditions. 1.2 Typical indications of damage resulting from this test may be: a) Loss or degradation of optical transmittance ability (both multimode and single-mode applications). b
16、) Decrease in return loss (increase in reflectance) (single-mode applications only). c) Loss of seal integrity at the device interface. d) Broken parts, accessories, or cable fibers. e) Breakage, chipping or scratching of the interface. Copyright Electronic Industries Alliance Provided by IHS under
17、license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINEIA-455-1 B 2 Normative references Test or inspection requirements and definitions may include, but are not limited to, the following references: EIA/TIA-440-A Fiber optic terminology EIAITIA-455-A
18、Standard test procedures for fiber optic fibers, cables, transducers, sensors, connecting and terminating devices and other fiber optic components. FOTP-I 3 (EIATIA-455-13) Visual and mechanical inspection of fiber, cables, connectors, and/or other fiber optic devices. FOTP-20 (EIA/TIA-455-20A) Meas
19、urement of change in optical transmittance. FOTP-107 (EIATIA-455-107) Return loss for fiber optic components. 3 Apparatus 3.1 bending and flexing the connector/device interface and strain relief areas may be used. Test equipment similar to that shown in either Figure 1 or Figure 2, capable of 3.1.1
20、Figure 1: A mounting fixture to which the device under test can be mounted such that one of the attached cables will be axially vertical and can be attached to a cycling head capable, unless otherwise specified by the Sectional or Detail Specification, of 180“ rotation, 90“ to either side of vertica
21、l. The head shall be operated at a maximum rate of 30 cycles per minute, unless otherwise specified in the Detail Specification. The mandrel diameter shall be large enough (Fig. I) such that it causes a negligible cable bend loss. The mandrels shall be positioned on the pendulum arm at a sufficient
22、distance from the mounting device such that the mandrel position causes no more than a negligible cable loss. 2 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD-EIA TIA-Y55-LB-ENGL 19
23、98 E 3231-1b00 Ob13bb 779 TINEIA-455-1 B Nominal Cable Diameter rnm inches 6.0 D I 18.0 0.23 D I 0.71 18.0 D I 30.0 0.71 DI 1.18 30.0 D 1.18 c D O .C D I 6.0 O c D I 0.23 3.1.2 Figure 2: An adjustable angle bracket with interchangeable connector or splice mounting plates, fastened to a cycling drive
24、 unit capable, unless otherwise specified by the Sectional or Detail Specification, of 180“ rotation, 90“ to either side of vertical. The drive unit shall be operated at a maximum rate of 30 cycles per minute, unless otherwise specified in the Detail Specification. The offset of the anglebracket sha
25、ll be adjusted such that any vertical movement of the weight during the test is minimized. Load kg Ib 0.5 1.10 1 .o 2.20 2.0 4.41 3.0 6.61 3.2 Weights designed so that force applied to the fiber optic cable is coincident with the cable axis and clamping does not crush the optical waveguide fiber(s)
26、or cable. Unless otherwise specified by the Detail Specification, loads shall be as specified in Table I NOTE - A frequently used load for 3mm cable diameter is I kg. Table 1 Load Schedule 3 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction
27、or networking permitted without license from IHS-,-,-STD-IA TIA-455-LB-ENGL 1778 111 3234b00 ObL3bb7 b05 TINEIA-455-1 B 3.3 connectors, and interfaces prior to and after testing. Inspection equipment (such as magnifiers, per FOTP-13) for examining cable, 3.4 Equipment to measure optical transmittanc
28、e through the cable before and after testing in accordance with FOTP-20. If the stability of the source and detector is at least one order of magnitude better than the allowable change in the connecting device in the test, a reference specimen or monitor fiber is not required. Otherwise a monitor fi
29、ber will be required. 4 Sampling and specimens 4.1 Test sample Each test specimen shall consist of a connector, mated connector pair, or splice, with each test end terminated to a i-1Om (3 to 33ft.) length of fiber optic cable, unless otherwise specified in the Detail Specification. The cable ends n
30、ot under test shall be terminated or prepared to interface with the applicable measurement equipment for initial and after test measurements, as required by the Detail Specification. 5 Procedures 5.1 Unless otherwise specified in the Detail Specification, the fiber optic interconnecting device shall
31、 be preconditioned for 48 hours at standard atmospheric conditions as outlined in EIA/TIA-455-A, Sec. 6 (23+ 5OC, 20 to 70% Relative Humidity and site ambient pressure; for U.S Militasr applications 2% 5C 45 to 75% Relative Humidity and 650 to 800mm Hg pressure). 5.2 would be considered degraded. Re
32、place the sample if degradation is detected. Visually inspect the sample in accordance with FOTP-I3 for any attribute which 5.3 FOTP-20 as applicable, to verify cable/connector assembly suitability for testing. Baseline optical transmittance measurements shall be made in accordance with NOTE 1 If ne
33、ither a reference specimen nor a monitor fiber is used, then power ratios are not measured. 4 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD-EIA TIA-455-LB-ENGL 1978 3234b00 ObL3b70
34、 327 W TINEIA-455-I B NOTE 2 For single-mode applications it may be desirable to make both optical transmittance measurements and return loss measurements as part of the test procedure. Return loss measurements should be made in accordance with FOTP-107 as applicable. 5.4 The test specimen shall be
35、placed in the flex cycling apparatus (See Figure 1 or 2) and the initial optical transmittance measurements made in accordance with FOTP- 20. This initial reading should be made prior to adding the load as specified in Table I. 5.5 With the appropriate load added (See Table I), the optical transmitt
36、ance of the cablekonnector lead assembly shall be measured to ensure fixturing and cable clamping have not affected the cables optical transmittance beyond acceptable limits as specified in the Sectional or Detail Specification. 5.6 of 30 cycles per minute unless otherwise specified. The cycling app
37、aratus shall be operated for 10 cycles at a maximumcycling rate 5.7 The optical transmittance of the specimen under test shall be verified before and after exposure to the required number of cycles or at regular intervals as dictated in the Detail Specification. Any deviation in optical transmittanc
38、e from the value recorded in paragraph 5.4 shall be considered to be caused by variations in the test specimen. 5.8 transmittance measurement as described in FOTP-20. At the end of the flex cycle, remove the load and take the final optical NOTE - This final measurement is taken with the load removed
39、 but with the cable/connector assembly still mounted on the test apparatus. 5.9 The test specimen shall be removed from the apparatus and visual inspection made in accordance with FOTP-13 (3X to 5X magnification). Examine samples for evidence of any physical degradation (Loss of seal integrity, brok
40、en parts, chips, cracks, scratches, etc.) Record observations of any degradation. 5 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD-EIA TIA-455-LB-ENGL 1778 m 3234b00 Db13b7L 2b3 m T
41、INEIA-455-1 B 6 Calculations or interpretation of results 6.1 Calculate changes in optical transmittance as measured between 5.4 and 5.7 in paragraphs 5.4 and 5.8. Compare these results with the pass/fail criteria specified in the Detail Specification. 6.2 been made and no activity is planned to dev
42、elop such a statement. This method has been in use for many years, but no statement for precision has 6.3 A statement of bias is not possible due to a lack of a standard reference material. 6 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction
43、 or networking permitted without license from IHS-,-,-STD-EIA TIA-455-LB-ENGL 1798 3234bCl bL3b72 LTT E TINEIA-455-I B 7 Documentation 7.1 Report the following information for each test: 7.1 .I Test procedure number (FOTP-1 ), detail procedure. 7.1.2 Test date. 7.1.3 Test sample identification. 7.1.
44、4 Measurements and observation as required by the Detail Specification. Photographs and/or sketches may be included to further clarify descriptions and observations. 7.1.5 Test sample preparation procedure used. 7.2 United States military applications require that the following information also be r
45、eported for each test. For other (nonmilitary) applications, this information need not be reported, but shall be available for review upon request: 7.2.1 Test procedure used, including test method, weights used, number of cycles, cycling rate and mandrel diameter. 7.3 only: The following information
46、 shall also be reported for U.S. military applications 7.3.1 Title of test. 7.3.2 Test personnel. 7.3.3 Test equipment and date of latest calibration. 7 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without licens
47、e from IHS-,-,-STD.EIA TIA-455-LB-ENGL 1938 I 3234b00 OLL3b73 O3b m TINEIA-455-1 B 8. Specification information The following information shall be specified in the Detail Specification: 8.1 Number and type of samples to be tested. 8.2 The number of test cycles and cycling rate, if other than the rat
48、e specified in this document. 8.3 Test procedure number (FOTP-I). 8.4 Applied weight. 8.5 Degrees of bending and flexing if other than 90“ on each side. 8.6 Distance from pivot point to center of mandrels if the method of fixturing shown in Figure 1 is used. 8.7 Number of cycles if measurements at r
49、egular intervals are required. 8.8 Distance from back of connector to point of attachment of weight if Figure 2 is used. 8.9 Observations or measurements to be made before and after flexing (See 1.2). 8.10 Acceptance or failure criteria. 8.1 I Conditioning requirements if other than required by 5.1 8.12 Diameter of mandrel. a Copyright Electronic Industries Alliance Provided by IHS und
