1、 MIL-STD-1678-4 28 May 2010 SUPERSEDING DOD-STD-1678 (IN PART) 30 November 1977 (See 6.5) DEPARTMENT OF DEFENSE STANDARD PRACTICE FIBER OPTIC CABLING SYSTEMS REQUIREMENTS AND MEASUREMENTS (Part 4: TEST SAMPLE CONFIGURATION AND FABRICATION REQUIREMENTS) (PART 4 OF 5 PARTS) AMSC N/A AREA 60GP METRIC P
2、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1678-4 i FOREWORD 1. This Department of Defense Standard Practice is approved for use by the Defense Supply Center Columbus, Defense Logistics Agency, and is available for use by all Departments
3、and Agencies of the Department of Defense. 2. Comments, suggestions or questions on this document should be addressed to Defense Supply Center Columbus, ATTN: VAT, Post Office Box 3990, Columbus, OH 43218-3990, or emailed to FiberOpticGroupdla.mil. Since contact information can change, you may want
4、to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. 3. This standard practice provides detailed information and guidance to personnel concerned with ensuring standardization of fiber optic cable topologies (optical fiber cabling and asso
5、ciated components) on military mobile vehicles used in air, land, and sea applications. In general, the requirements and methods specified herein are not identifiable to any specific mobile vehicle class or type, but are intended to standardize and minimize variations in requirements, test setups, t
6、est measurement procedures, test sample fabrication configurations, and other aspects that must be addressed for completeness. Where specified, constrains for usage or platform types will be listed. The term “platform” will be used to refer to the military mobile vehicles in general or, where design
7、ated, one particular class (such as “aircraft platform”) or one particular type within that class (such as “F-35”). 4. In order to provide flexibility in the use and update of the different aspects for requirements and methods, this standard practice is issued in five parts; as follows: Part 1: Desi
8、gn, maintenance and installation requirements. This part addresses design requirements for platforms that use cable harnesses as the means to transport data through optical fiber among communication network and end user equipment. Larger platforms that route trunk cables through cableways and drop c
9、ables to the end user (application equipment), can cite applicable requirements in Part 1 of the Standard Practice and augment them with use of MIL-HDBK-2051 and MIL-STD-2042 as appropriate. Surface ships and submarines, are to use MIL-HDBK-2051 and MIL-STD-2042 in lieu of Part 1 of this Standard Pr
10、actice. Part 2 Optical measurements. Part 2 of this standard addresses further details to refine or bound (constrain) the performance of each optical test measurement addressed. The test methods, such as those in a TIA-455 series standard or military standard/specification, are cited in part 2. This
11、 part of the standard practice augments the test method in the standard or specification to ensure consistency with setup and measurement procedure. This consistency minimizes variations when comparing data obtained from different test laboratories (including commercial, vendor, Government, and Gove
12、rnment contractor). Part 3 Physical, mechanical environmental, and material measurements. Part 3 of this standard addresses further details to refine or bound (constrain) the performance of each physical, mechanical, environmental and material test measurement or inspection addressed. The test metho
13、ds, such as those in a TIA-455 series standard or military standard/specification, are cited in part 3. This part of the standard practice augments the test method to ensure consistency with setup, measurement procedure, data recording/analysis, and other factors critical to conducting or evaluating
14、 test performance. This consistency minimizes variations when comparing data obtained from different test laboratories (including commercial, vendor, Government, and Government contractor). Part 4 Test sample configuration and fabrication requirements. Part 4 of this standard addresses further detai
15、ls to refine or bound (constrain) the configuration and fabrication of test samples for the fiber optic components addressed. Fabrication methods, such as those in the Shipboard installation standard, MIL-STD-2042, or in the general series aircraft maintenance manual, NAVAIR 01-1A-505-4/T.O. 1-1A-14
16、-4/TM 1-1500-323-24-4, are cited in part 4. This part of the standard practice augments the fabrication method to ensure consistency with use of the same components (such as cable types) and processes and augments the component specification to ensure consistency of the test sample configuration. Pr
17、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1678-4 ii Part 5 Design phase and legacy measurements. Tests that are more unique to the design phase are addressed in Part 5 of this standard practice. Also, Part 5 addresses some test methods ci
18、ted in former DOD-STD-1678. The test methods cited in DOD-STD-1678 are considered obsolete; however, a few military specifications and commercial standards still refer to some of the test methods. These test methods are provided in this part of the standard with the recommended replacement method. T
19、hese latter test methods are listed under the constraint that they be used only with the specific military specifications or commercial standards in which they are cited. The intent is to delete each DOD-STD-1678 test method from that standard practice in Part 5 once its reference from military spec
20、ification or commercial standard is removed. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1678-4 iii CONTENTS PARAGRAPH PAGE 1. SCOPE 1 1.1 Scope 1 1.1.1 Applicability 1 1.2 Intent for Part 4 1 1.2.1 Primary use for Part 4 1 1.2.2 Suppleme
21、ntal use 1 1.2.3 General constraints on use 1 2. APPLICABLE DOCUMENTS 2 2.1 General 2 2.2 Government documents 2 2.2.1 Specifications, standards and handbooks 2 2.2.2 Other Government documents 2 2.3 Non-Government documents 3 2.4 Order of precedence 3 3. DEFINTIONS 4 3.1 General fiber optics terms
22、4 3.2 Acronyms 4 3.3 Qualification testing, general 4 3.4 Qualification testing, QPL process 4 4. GENERAL REQUIREMENTS 5 4.1 Test sample configurations 5 4.1.1 Connectors and splices 5 4.1.2 Optical fiber and cable 5 4.2 Safety compliance during DUT assembly fabrication 5 4.2.1 Fiber optic safety pr
23、ecautions 5 4.3 Consensus of design requirements 6 5. DETAILED REQUIREMENTS 7 5.1 Connection (connector, termini and mechanical splice) 7 5.1.1 MIL-PRF-29504/4 however, they are applicable for other types of test or evaluation programs that require citing the configuration and fabrication for fiber
24、optic cabling components used on military mobile vehicles also identified as platforms. 6.2 Acquisition requirements. Acquisition documents should specify the following: Title, number, and date of this standard practice. 6.3 Subject term (key word) listing. Test sample configuration Test sample fabr
25、ication requirements Fiber optic cabling 6.4 Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue, due to the extent of the changes. 6.5 Supersession data. The five parts of MIL-STD-1678 replace superseded DOD-STD-1678 w
26、ith completely new fiber optic requirements and measurements. With the exception of some legacy material in Part 5 of MIL-STD-1678, none of the fiber optic test and measurement material comprising superseded DOD-STD-1678 has been included. With the exceptions noted in Part 5 of this standard practic
27、e, this standard practice should be applied in lieu of the legacy methods in superseded DOD-STD-1678. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1678-4 9 REQUIREMENTS FIBER OPTIC TEST SAMPLE CONFIGURATIONS, FABRICATIONS, AND SPECIFIC MET
28、HOD/PRACTICES Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1678-4 10 CONNECTION (CONNECTOR, TERMINI, AND MECHANICAL SPLICES) REQUIREMENTS 4101 - 4104 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
29、 IHS-,-,-MIL-STD-1678-4 11 REQUIREMENT 4101 FIBER OPTIC TEST SAMPLE CONFIGURATIONS, FABRICATION, AND SPECIFIC METHODS/PRACTICES FOR MIL-PRF-29504/4 AND MIL-PRF-29504/5 TERMINI 1. PURPOSE 1.1 Purpose. This requirement standardizes configurations, fabrication, and specific methods/practices for the co
30、mponents to be used in the assembly/fabrication of fiber optic the test sample (DUT assembly) for MIL-PRF-29504/4 and MIL-PRF-29504/5 termini and, by extension for fiber optic applications, MIL-DTL-38999 connectors. The DUT assemblies are intended to be used as part of qualification testing, but can
31、 be used in developmental, prototype, production, rework, and modification programs on military platform fiber optic cable assemblies. To ensure that the risk to the Government of accepting bad optical measurement data is low, to minimize test variations and to permit more accurate comparison of tes
32、t results from multiple sources, a “standardized” approach is specified for DUT assembly configurations, fabrication, and specific methods/practices. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, and 5 of this standard practice. This sectio
33、n does not include documents cited in other sections of this standard practice or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cit
34、ed in sections 3, 4, and 5 of this standard practice, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards and handbooks. The following specifications, standards and handbooks form a part of this document to the extent specified herein. Unless otherwise specified
35、, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-29504 - Termini, Fiber Optic Connector, Removable, General Specification for. MIL-DTL-38999 - Connectors, Electrical, Circular, Miniature, High Density, Quick Disconnect (Bay
36、onet, Threaded, and Breech Coupling), Environment Resistant, Removable Crimp and Hermetic Solder Contacts, General Specification for. (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Buildi
37、ng 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this standard practice to the extent specified herein. Unless otherwise specified, the issues are these documents are
38、 those cited in the solicitation or contract. DEPARTMENT OF DEFENSE DRAWINGS NAVSEA Drawing 53711-8283255 - Termini, Fiber Optic, MIL-PRF-29504/4 & /5, Test Sample Configurations/ Fabrication & Specific Methods/Practices. (A copy of NAVSEA Drawing 53711-8283255 can be obtained at Web Site: https:/fi
39、beroptics.nswc.navy.mil/ in the NAVSEA Drawing section under Component Information. If unable to access this Web Site, request an application by e-mail to NSWC DD Warfare Systems Department at DLGR_NSWC_Fowebnavy.mil.) REQUIREMENT 4101 Provided by IHSNot for ResaleNo reproduction or networking permi
40、tted without license from IHS-,-,-MIL-STD-1678-4 12 DEPARTMENT OF DEFENSE PUBLICATIONS NAVAIR 01-1A-505-4/ - Aircraft Fiber Optic Cabling, Technical Manual, Installation and Testing T.O. 1-1A-14-4/ Practices. TM 1-1500-323-24-4 (A copy of this Government General Series Technical Manual can be obtain
41、ed at website: https:/jswag.navair.navy.mil. At the home page select “Document Library” (on left side), then select the “JFOWG” folder followed by the “Maintenance Documents.) 2.3 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of th
42、is document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless specific exemption has been obtained. 3. DEFINITIONS. 3.1 Cable, fiber optic. A fiber optic cable is a cable that contains opt
43、ical fibers. The cable may be of a tight buffer or a loose tube design. 3.2 Cable bundle, fiber optic. Single fiber cables grouped together and secured by lacing tape. The cable bundle can be placed in convoluted tubing, used in various protected harness configurations or used as is in an open cable
44、 harness configuration. 3.3 Cable, loose tube. A fiber optic cable design is one configured with one or more optical fibers are fitted loosely within a tube, giving the optical fibers freedom to move. This mobility and isolation from the tube minimizes the effects of external forces on the performan
45、ce of the link. The isolation allows cable expansion and contraction with temperature independent of the optical fibers. 3.4 Cable, tight buffer. A fiber optic cable design is one configured with an additional protective coding (additional buffer layer) is applied directly over a coated (buffered) f
46、iber. Buffer material helps preserve the fibers inherent strength and provides increased mechanical protection. A tight buffer cable allows cable placement in tighter bends, more roughed handling (such as better crush and impact resistance). 3.5 Cabling, fiber optic. Fiber optic cabling is a term us
47、ed to include single fiber cable, multiple fiber cable, fiber optic cable bundles, and fiber optic cable harnesses. The (optical) fiber is the optical conduit or waveguide transmission media, whereas metallic conductor (wire) is used in an electrical cable. Cable structure is added to make the fiber
48、s easier to handle and maintain. The fiber is a thin piece of glass (with a diameter usually around 125 micrometers) that contains and transports the light signals. 3.6 Connector, fiber optic. A device that permits repeated mating and couples the optical power between two optical fibers or two group
49、s of optical fibers. A fiber optic connector must maintain fiber alignment without significant loss of optical power. 3.7 Optical fiber. An optical fiber is a thin cylindrical dielectric (non-conductive) waveguide used to send light energy for communication. Optical fibers consist of three parts: The core, the cladding, and the coating or buffer. The choice of optical fiber materials
