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I.S. EN 61746:2005

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

CALIBRATION OF OPTICAL TIME-DOMAIN REFLECTOMETERS (OTDR)
Available format(s)

Hardcopy , PDF

Superseded date

03-21-2011

Language(s)

English

Published date

01-01-2005

Preview

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.

FOREWORD
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Calibration test requirements
   4.1 Preparation
   4.2 Test conditions
   4.3 Traceability
5 Distance calibration - General
   5.1 Location error model
   5.2 Using the calibration results
   5.3 Measuring fibre length
6 Distance calibration methods
   6.1 External source method
   6.2 Concatenated fibre method
   6.3 Recirculating delay line method
7 Loss calibration - General
   7.1 Determination of the displayed power level F
   7.2 Selection of an appropriate reference loss A[ref]
   7.3 Development of a test plan
   7.4 Polarization dependence
   7.5 Calculation of the calibration results
   7.6 Using the calibration results
8 Loss calibration methods
   8.1 Loss calibration with fibre standard
   8.2 External source method
   8.3 Splice simulator method
   8.4 Power reduction method
9 Reflectance calibration
   9.1 Reflectance measurements
   9.2 Use of the backscatter parameter, K
   9.3 Range of reflectance measurement
   9.4 Development of a test plan
   9.5 Equipment
   9.6 Measurement procedure
10 Documentation
   10.1 Measurement data and uncertainties
   10.2 Test conditions
Annex A (normative) Recirculating delay line for
        distance calibration
Annex B (normative) Optical fibre standard for loss
        calibration
Annex C (normative) Standard splice simulator for loss
        calibration
Annex D (informative) Mathematical basis
Annex E (normative) Reflectance standard
Annex F (normative) Simple version of reflectance standard
Annex G (informative) OTDR basis: Backscatter theory - Reflectance
        measurements using an OTDR - Determination of fibre
        backscatter parameter
Bibliography

Gives procedures for calibrating single-mode optical time domain reflectometers (OTDR). Covers OTDR measurement errors and uncertainties.

DocumentType
Standard
Pages
204
PublisherName
National Standards Authority of Ireland
Status
Superseded
SupersededBy

Standards Relationship
BS EN 61746:2005 Identical
IEC 61746:2005 Identical
NF EN 61746 : 2005 Identical
EN 61746:2005 Identical
NBN EN 61746 : 2006 Identical
DIN EN 61746:2005-10 Identical

IEC 60825-2:2004+AMD1:2006+AMD2:2010 CSV Safety of laser products - Part 2: Safety of optical fibre communication systems (OFCS)
IEC 60050-731:1991 International Electrotechnical Vocabulary (IEV) - Part 731: Optical fibre communication
IEC 61300-3-2:2009 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-2: Examination and measurements - Polarization dependent loss in a single-mode fibre optic device
IEC 60794-1-2:2017 Optical fibre cables - Part 1-2: Generic specification - Basic optical cable test procedures - General guidance
IEC 60825-1:2014 Safety of laser products - Part 1: Equipment classification and requirements
EN 60793-1-40:2003 Optical fibres - Part 1-40: Measurement methods and test procedures - Attenuation
IEC TR 61930:1998 Fibre optic graphical symbology
IEC 60793-1-40:2001 Optical fibres - Part 1-40: Measurement methods and test procedures - Attenuation
IEC TR 61931:1998 Fibre optic - Terminology
EN 61300-3-2:2009 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-2: Examinations and measurements - Polarization dependent loss in a single-mode fibre optic device
IEC 61300-3-6:2008 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-6: Examinations and measurements - Return loss
EN 60794-1-2:2017/AC:2017-07 OPTICAL FIBRE CABLES - PART 1-2: GENERIC SPECIFICATION - BASIC OPTICAL CABLE TEST PROCEDURES - GENERAL GUIDANCE (IEC 60794-1-2:2017)

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