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