DLA MIL-STD-1678-2 A-2013 FIBER OPTIC CABLING SYSTEMS REQUIREMENTS AND MEASUREMENTS (Part 2 OPTICAL MEASUREMENTS) (PART 2 OF 6 PARTS).pdf

1、METRIC MIL-STD-1678-2A 4 November 2013 SUPERSEDING MIL-STD-1678-2W/CHANGE 2 24 August 2012 DEPARTMENT OF DEFENSE STANDARD PRACTICE FIBER OPTIC CABLING SYSTEMS REQUIREMENTS AND MEASUREMENTS (Part 2: OPTICAL MEASUREMENTS) (PART 2 OF 6 PARTS) AMSC N/A AREA 60GP Provided by IHSNot for ResaleNo reproduct

2、ion or networking permitted without license from IHS-,-,-MIL-STD-1678-2A ii FOREWORD 1. This Department of Defense Standard Practice is approved for use by the DLA Land and Maritime, Defense Logistics Agency, and is available for use by all Departments and Agencies of the Department of Defense. 2. C

3、omments, suggestions or questions on this document should be addressed to DLA Land and Maritime, ATTN: VAT, Post Office Box 3990, Columbus, OH 43218-3990, or emailed to FiberOpticGroupdla.mil. Since contact information can change, you may want to verify the currency of this address information using

4、 the ASSIST Online database at https:/assist.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 associated components) on military mobile vehicles used in air, l

5、and, 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, test measurement procedures, test sample fabrication configura

6、tions, 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 designated, one particular class (such as “aircraft platform”) or o

7、ne 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: Design, installation and maintenance requirements. This part addr

8、esses 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 cables to the end user (application equipment), can cite appli

9、cable 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 Practice. Part 2 Optical measurements. Part 2 of this standard

10、practice 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 already. This part of the standard practice augments the test metho

11、d 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 Government contractor). Part 3 Physical, mechanical, enviro

12、nmental 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 methods, such as those in a TIA-455 series standard or milit

13、ary standard/specification, are cited already. 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 test performance. This consistency minimizes variations w

14、hen comparing data obtained from different test laboratories (including commercial, vendor, Government and Government contractor). Part 4 Test sample preparation/fabrication requirements. Part 4 of this standard practice addresses further details to refine or bound (constrain) the preparation and fa

15、brication 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 maintainers manual, NAVAIR 01-1A-505-4/TO 1-1A-14-1, are cited already. This part of the standard practice au

16、gments the fabrication method to ensure consistency of the test configuration. Part 5 Design phase and legacy measurements. Design phase, supplemental and legacy measurements. Tests that are more unique to the design phase or tests and inspections that are not just primarily for qualification (suppl

17、emental measurements) are addressed in Part5 of this standard practice. Also, legacy test methods and legacy criteria measurements are provided in this part of the standard practice with the recommended replacement method for the former (legacy) DOD-STD-1678 test methods. These former DOD-STD-1678 t

18、est 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 specification or

19、commercial standard is removed. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1678-2A iii Part 6 Parts and support equipment commonality and standardization requirements, cable harness configurations. This part of the Standard Practice addr

20、esses component part and support equipment standardization requirements for platforms that use cable harnesses as the means to transport data through optical fiber among communication network and end user equipment. Surface ships and submarines are to use the Navy Shipboard Fiber Optic Recommended C

21、omponents Parts List (a copy may be found at web site: https:/fiberoptics.nswc.navy.mil/) in lieu of part 6 of this Standard Practice. Likewise, larger platforms that route trunk cables through cableways and drop cables to the end user (application equipment), can cite applicable requirements in Par

22、t 6 of the Standard Practice, cite the Navy shipboard Fiber Optic Recommended Components Parts List (a copy may be found at web site: https:/fiberoptics.nswc.navy.mil/), or both, as appropriate. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD

23、-1678-2A iv CONTENTS PARAGRAPH PAGE 1. SCOPE 1 1.1 Scope 1 1.1.1 Applicability 1 1.2 Intended uses for Part 2 1 1.2.1 Primary uses of Part 2 1 1.2.2 Supplemental use 1 1.2.3 Use for content 1 1.2.4 Constraints on use 1 2. APPLICABLE DOCUMENTS 2 2.1 General 2 2.2 Government documents 2 2.2.1 Other Go

24、vernment documents 2 2.3 Non-Government documents 2 2.4 Order of precedence 2 3. DEFINITIONS 3 3.1 General fiber optics terms 3 3.2 Acronyms 3 3.3 Use of term insertion loss versus the term change in optical transmittance 3 3.3.1 Insertion loss 3 3.3.2 Change in optical transmittance 3 3.4 Use of te

25、rm monitor fiber versus the term reference fiber 3 3.4.1 Monitor fiber 3 3.4.2 Reference fiber 4 3.4.3 Optical discontinuity 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 Environmental conditions 5 4.3 Vendor minimum i

26、nspection responsibilities 5 4.4 Test conditions 5 4.4.1 Connection type at instrument optical port 5 4.4.2 Test setup cable routing to minimize macro bends and micro bends 5 4.4.3 Test interruption 6 4.4.4 Environmental chamber test charts 6 4.4.5 Multiple channel optical monitoring 6 4.4.6 Recordi

27、ng and verifying pass/fail criteria 6 4.5 Laser and fiber optic safety compliance 7 4.5.1 Laser safety precautions 7 4.5.2 Fiber optic safety precautions 7 4.6 Operating wavelength 8 4.6.1 Default 8 4.6.2 Default, shipboard 8 4.7 Consensus for optical performance measurements 8 4.8 Use the prescript

28、ion approach cited 8 4.8.1 Launch conditions 8 4.8.2 Change in optical transmittance 9 4.8.3 Insertion loss 9 4.9 Inspection by attributes 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1678-2A v PARAGRAPH PAGE 5. DETAILED REQUIREMENTS 10

29、5.1 Optical measurements 10 5.1.1 Insertion loss 10 5.1.2 Change in optical transmittance 10 5.1.3 Optical crosstalk 10 5.1.4 Optical signal discontinuity 10 5.1.5 Optical return loss 10 5.1.6 Attenuation rate 10 5.2 Support processes for optical measurements 10 5.2.1 Test procedures 10 5.2.2 Optica

30、l test instrumentation 10 5.2.3 Launch conditions 10 6. NOTES 11 6.1 Intended use 11 6.2 Acquisition requirements 11 6.3 Subject term (key word) listing 11 6.4 Changes from previous issue 11 6.5 Supersession data 11 MEASUREMENTS Optical measurements 2101 Insertion loss 13 2102 Change in optical tran

31、smittance 25 2103 Optical crosstalk 38 2104 Optical signal discontinuity 49 2105 Optical return loss 59 2106 Attenuation rate 72 Support processes for optical measurements 2201 Test procedures 91 2202 Optical test instrumentation 96 2203 Launch conditions 104 Provided by IHSNot for ResaleNo reproduc

32、tion or networking permitted without license from IHS-,-,-MIL-STD-1678-2A 1 1. SCOPE 1.1 Scope. Part 2 of this standard practice provides further details to refine or bound (constrict) the performance of each optical test measurement addressed. 1.1.1 Applicability. The test methods, such as those in

33、 a TIA-455 series standard or military standard/specification, are cited already. This part of the standard practice augments the test method in the TIA-455 series standard or military standard/ specification to ensure consistency with setup and measurement procedure. This consistency minimizes vari

34、ations when comparing data obtained from different test laboratories (including commercial, vendor, Government, and Government contractor). The rapidly changing state of the art in fiber optic technology makes it essential that some degree of flexibility be exercised in enforcing this document. When

35、 there is a conflict between this document and the platform specification or contract, the platform specification or contract will take precedence. Where obsolescence or other issues are such that the measurement requirements specified for the refinement or bound (constraint) herein cannot be implem

36、ented, users will submit a description of the issue along with a request for clarification or with proposal for redefining the requirement to consider for incorporation into this standard practice to: DLA Land and Maritime, ATTN: VAT, Post Office Box 3990, Columbus, OH 43218-3990, or emailed to Fibe

37、rOpticGroupdla.mil. 1.2 Intended uses for Part 2. 1.2.1 Primary uses of Part 2. Part 2 of this standard practice was prepared primarily for qualification functions performed by Government Personnel (including Government contractors acting on behalf of the Government) as specified in 1.2.1.1 through

38、1.2.1.3 1.2.1.1 Auditing. Use for performing audits of test laboratories doing testing for fiber optic cable topology (FOCT) components. 1.2.1.2 Test procedure review. Use to review optical test procedures for a FOCT component. 1.2.1.3 Test report review. Use to review the optical testing performanc

39、e as part of a test report for a FOCT component. 1.2.2 Supplemental use. Part 2 of this standard practice is intended to identify to vendors and test laboratories the areas of emphasis for Government review for optical test measurements performed as part of a FOCT component qualification process. 1.

40、2.3 Use for content. Each optical measurement contains the test methodology and performance requirements in a narrative format. Checklists are included that contain primary requirements in a table format. Further clarification of the items in the table can be found in applicable optical measurement.

41、 1.2.4 Constraints on use. a. Part 2 of this standard practice is not intended as a tutorial. There are significant differences in Government mandated optical tests versus performance in some parts of the commercial sector. Commercial entities are expected to be familiar with the test standards cite

42、d by the Government for use. Part 2 of this standard practice does provide some guidance and clarifications for successful implementation within the test standards cited. b. Part 2 of this standard practice is not intended to be used in lieu of a test laboratory developing optical test procedures sp

43、ecific to their test instrumentation. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1678-2A 2 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 se

44、ction 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 of docume

45、nts cited in sections 3, 4, and 5 of this standard practice, whether or not they are listed. 2.2 Government documents. 2.2.1 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this standard practice to the exten

46、t specified herein. Unless otherwise specified, the issues are these documents are those cited in the solicitation or contract. NAVAIR 01-1A-505-4/ T.O. 1-1A-14-4/ TM 1-1500-323-24-4 Aircraft Fiber Optic Cabling, Technical Manual, Installation and Testing Practices. (A copy of this document is avail

47、able online at: https:/jswag.navair.navy.mil. At the home page select “Document Library” (on left side), then select the “Committee” folder, then “JFOWG” followed by the “Maintenance Documents” folder. If unable to access this Web Site, request an application by e-mail to NSWC DD Warfare Systems Dep

48、artment at: (DLGR_NSWC_Fowebnavy.mil.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are cited in the solicitation or contract. AMERICAN NATIONAL STANDARDS INSTITUTE LIA

49、Z136.2 - Safe Use of Optical Fiber Communication Systems Utilizing Laser Diode and LED Sources. (Copies are available from http:/www.ansi.org or the American National Standards Institute, 1430 Broadway, New York, NY 10018-3308.) TELECOMMUNICATIONS INDUSTRY ASSOCIATION TIA440 - Fiber Optic Terminology. TIA455 - Fiber Optic Fibers, Cables, Transducers, Sensors, Connecting and Te