I.S. EN 61746:2005
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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CALIBRATION OF OPTICAL TIME-DOMAIN REFLECTOMETERS (OTDR)
Hardcopy , PDF
21-03-2011
English
01-01-2005
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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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Superseded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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