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    I.S. EN 60793-1-49:2006

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    OPTICAL FIBRES - PART 1-49: MEASUREMENT METHODS AND TEST PROCEDURES - DIFFERENTIAL MODE DELAY

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  19-09-2021

    Language(s):  English

    Published date:  01-01-2006

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Apparatus
      4.1 Optical source
      4.2 Stability
      4.3 Launch system
      4.4 Detection system
      4.5 Computational equipment
    5 Sampling and specimens
      5.1 Test sample
      5.2 Specimen endfaces
      5.3 Specimen length
      5.4 Specimen packaging
      5.5 Specimen positioning
    6 Procedure
      6.1 Adjust and measure system response
      6.2 Adjust detection system
      6.3 Measure the test sample
    7 Calculations and interpretation of results
      7.1 Differential mode delay (DMD)
      7.2 Minimum calculated effective modal bandwidth
      7.3 Length normalization
    8 Documentation
      8.1 Report the following information for each test:
      8.2 The following information shall be available upon request:
    9 Specification information
    Annex A (normative) Source spectral width limitation
    Annex B (informative) Discussion of measurement details
    Annex C (informative) Determining DMD weights for EMBc calculation
    Annex D (informative) EMBc calculation information
    Annex E (informative) Comparison between this standard and
            ITU recommendations
    Annex ZA (normative) Normative references to international
             publications with their corresponding European
             publications
    Bibliography

    Abstract - (Show below) - (Hide below)

    Specifies a method for characterizing the modal structure of a graded-index multimode fibre. This information is useful for assessing the bandwidth performance of a fibre especially when the fibre is intended to support a variety of launch conditions such as those produced by standardized laser transmitters.

    General Product Information - (Show below) - (Hide below)

    Development Note For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Withdrawn

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 60825-2:2004+AMD1:2006+AMD2:2010 CSV Safety of laser products - Part 2: Safety of optical fibre communication systems (OFCS)
    IEC 60793-1-1 : 2017 OPTICAL FIBRES - PART 1-1: MEASUREMENT METHODS AND TEST PROCEDURES - GENERAL AND GUIDANCE
    IEC 60793-2-10:2017 Optical fibres - Part 2-10: Product specifications - Sectional specification for category A1 multimode fibres
    EN 60793-1-1:2017 Optical fibres - Part 1-1: Measurement methods and test procedures - General and guidance
    IEC 60793-1-41:2010 Optical fibres - Part 1-41: Measurement methods and test procedures - Bandwidth
    IEC 60825-1:2014 Safety of laser products - Part 1: Equipment classification and requirements
    IEC 60793-1-42:2013 Optical fibres - Part 1-42: Measurement methods and test procedures - Chromatic dispersion
    EN 60793-2-10:2017 Optical fibres - Part 2-10: Product specifications - Sectional specification for category A1 multimode fibres
    EN 60793-1-22:2002 Optical fibres - Part 1-22: Measurement methods and test procedures - Length measurement
    EN 61280-1-4:2010 Fibre optic communication subsystem test procedures - Part 1-4: General communication subsystems - Light source encircled flux measurement method
    EN 60793-1-41:2010 Optical fibres - Part 1-41: Measurement methods and test procedures - Bandwidth
    IEC 60793-1-45 : 2.0 OPTICAL FIBRES - PART 1-45: MEASUREMENT METHODS AND TEST PROCEDURES - MODE FIELD DIAMETER
    EN 60793-1-42:2013/AC:2013 OPTICAL FIBRES - PART 1-42: MEASUREMENT METHODS AND TEST PROCEDURES - CHROMATIC DISPERSION
    IEC 60793-1-22:2001 Optical fibres - Part 1-22: Measurement methods and test procedures - Length measurement
    IEC 61280-1-4:2009 Fibre optic communication subsystem test procedures - Part 1-4: General communication subsystems - Light source encircled flux measurement method
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