1、 TIA DOCUMENT FOTP-187 Engagement and Separation Force Measurement of Fiber Optic Connector Sets TIA-455-187 ANSI APPROVAL WITHDRAWN MARCH, 2004 JULY 1991 TELECOMMUNICATIONS INDUSTRY ASSOCIATION The Telecommunications Industry Association represents the communications sector of NOTICE TIA Engineerin
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7、A 22201 U.S.A. (From Project No. 3-3749, formulated under the cognizance of the TIA FO-4 Committee on Fiber Optics.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2004 Standards & Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of
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22、 W EIA/TIA-455-187 Page 1 FOTP-187 KNGAGEMENT AND SEpARATiON FORCE MEASUREMENT OF FIBER OPTIC CONNEcrOR SETS (From EIA Standards Proposal No. 2352, formulated under the cognizance of TIA FO-6.3, Subcommittee on Fiber Optic Interconnecting Devices, and TIA FO-6.4, Subcommittee on Fiber Optic Test Met
23、hods and Instrumentation.) This FOTP is part of the series of test procedures included within Recommended Standard EIA/TIA-455. 1. NTRODUCTION 1.1 Intent The purpose of this procedure is to measure the forces or torques that are required to fully couple or uncouple a connector set. 1.2 Description T
24、he connector set components are held in a fixture SO that a controlled coupling force or torque can be applied. The force or torque is measured during the entire coupling and/or uncoupling cycle. The procedure is applicable to either twist type or push-pull type coupling mechanisms. 1.3 Alternative
25、Procedures This test procedure is an alternative to the measurement procedure, titled Engagement and Separation Force of IEC 874-1, Third Edition. EIA/TIA-455-187 Page 2 2. APPLICABLE DOCUMENTS The following standards contain provisions which, through reference in this text, constitute provisions of
26、 this procedure. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this procedure are encouraged to apply the most recent editions of the referenced standards. EIA/TIA- 45 5 -A1 “Standard Test Procedures for Fiber
27、 Optic Fibers, Cables, Transducers, Sensors, Connecting and Terminating Devices, and Other Fiber Optic Components “Connectors for optical fibres and Cables, Part 1, Generic Specif icationll 2 IEC 874-1, Third Edition 3. APPARATUS The apparatus consists of a holding fixture( s) , a force or torque ge
28、nerator, and a force or torque measuring instrument. 3.1 Holding Future(s) The holding fixture shall hold the mating components so that they do not influence the measured force or torque value. They shall maintain mating components in proper alignment throughout the coupling cycle. 3.2 Force or Torq
29、ue Generator The force or torque generator shall smoothly apply the force or torque. Hand coupling of the connectors is permitted. 3.3 Force or Torque Measuring Instrument The measuring instrument shall continuously measure the force or torque throughout the coupling cycle. In process of preparation
30、. Pending publication of this revision, use EIA RS-455. in process of preparation. Pending publication of this revision, use IEC/86B(Central Officel69. STD-EIA TIA-455-187-ENGL 1991 323b00 ObL453Y 3T2 EIA/TIA-455-187 Page 3 4. SAWLING AND SPECIMENS 4.1 Sampling. Unless otherwise specified in the Det
31、ail Specification, select the test specimens randomly from the lot(s) being tested and according to the schedule in the Detail Specification. 4.2 specimens. The Detail Specification shall define the specimen. 5.1 Preconditioning Precondition the specimen as required by the Detail Specification. 5.2
32、Measurement 5.2.1 Position the connector set components in the holding fixture. 5.2.2 Apply and measure the force or torque to couple the connector set. Unless otherwise specified, the minimum allowable coupling time is 3 seconds. 5.2.3 Apply and measure the force or torque to uncouple the connector
33、 set. Unless otherwise specified, the minimum allowable uncoupling time is 3 seconds. 6. CALCULATIONS OR INTERPREI?A!ON OF RESULTS This Section is not applicable to this procedure. EIA/TIA-455-187 Page 4 7.1 As a minimum, the documentation shall provide the following information: 7.1.1 Title of meas
34、urement and date. 7.1.2 Specimen description and the measured feature. The description shall contain the specimen variant identification number, when applicable. 7.1.3 The apparatus used and the date of latest calibration. 7.1.4 All applicable measurement details (see Section 8). 7.1.5 All measureme
35、nt values and observations. 7.2 The following information shall be reported and available only for U.S. Military applications: 7.2.1 Test personnel. 8 SPECIFICATION INFORMATiON The Detail Specification shall specify the following details, as applicable: . 8.1 8.2 The maximum and/or minimum allowable
36、 coupling force or torque (5.2.2). A definition of the specimen to be tested (see Section 4.). 8.3 The maximum and/or minimum allowable uncoupling force or torque (5.2.3). 8.4 The minimum allowable coupling time (5.2.2) or uncoupling time (5.2.3), if other than stated in 5.2.2 or 5.2.3. 8.5 Precondi
37、tioning procedure required (5.1) . 8.6 All deviations from this procedure. I EIA/TIA-455-187 Page 5 APPENDIX COMPARISON BE3MEEN !i!HIS FTP AND IEC OR CCITT REQREMENTS (Nonmandatory Information) Al. IEC Reference is made to IEC-874-1, Third Edition 3 , “Connectors for optical fibres and cables, Part
38、1: Generic specification.11 IEC-874-1, Third Edition, defines a measurement procedure titled Engagement and Separation Force, that is, insofar as can be determined, the same as the test defined in FOTP-187. It is believed that this IEC method was originally created to test electrical connectors and was later adapted to fiber optic connectors. A2. CCITT There are no references to any test equivalent to this FOTP known to exist in CCITT documents. in process of preparation. Pending publication of this revision, the test can be found in Clause 4.4.5 of IEC/86B(Central Officel69.
