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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Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

Calibration of optical time-domain reflectometers (OTDR)

Superseded date

04-03-2011

Superseded by

EN 61746-1:2011

Published date

11-03-2005

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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
Annex ZA (normative) Normative references to international
                      publications with their corresponding
                      European Publications
Bibliography
Figures
Table

Provides procedures for calibrating single-mode optical time domain reflectometers (OTDR). It only covers OTDR measurement errors and uncertainties. This standard does not cover correction of the OTDR response.

Committee
CLC/SR 86
DevelopmentNote
Supersedes UNE EN 61746. (02/2008)
DocumentType
Standard
PublisherName
European Committee for Standards - Electrical
Status
Superseded
SupersededBy

Standards Relationship
DIN EN 61746:2005-10 Identical
CEI EN 61746 : 2006 Identical
BS EN 61746:2005 Identical
IEC 61746:2005 Identical
UNE-EN 61746:2005 Identical
I.S. EN 61746:2005 Identical
PN EN 61746 : 2007 Identical
NEN EN IEC 61746 : 2005 Identical
PNE-prEN 61746 Identical

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