SN EN 61300-3-6 : 1997 AMD 2 1999

1 Scope
2 Normative references
3 General description
  3.1 Method 1
  3.2 Method 2
  3.3 Method 3
  3.4 Method 4
  3.5 Selection of reference measurement method
4 Apparatus and symbols
  4.1 Device under test (DUT)
  4.2 Method 1: measurements with OCWR
  4.3 Method 2: measurements with OTDR
  4.4 Method 3: measurements with OLCR
  4.5 Method 4: measurements with OFDR
5 Procedure
  5.1 Launch conditions
  5.2 Pre-conditioning
  5.3 DUT output port
  5.4 Method 1: measurement with OCWR
  5.5 Method 2: measurement with OTDR
  5.6 Method 3: measurement with OLCR
  5.7 Method 4: measurements with OFDR
6 Details to be specified
  6.1 Return loss measurement with OCWR
  6.2 Return loss measurement with OTDR
  6.3 Return loss measurement with OLCR
  6.4 Return loss measurement with OFDR
  6.5 Measurement procedure
Annex A (informative) Comparison of return loss
        detectable by four different methods
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications

Specifies procedures for the measurement of return loss (RL) of a fibre optic device under test (DUT). RL is the ratio of the power (P[i]) incident on, or entering, the DUT to the total power reflected (P[r]) by the DUT, expressed in decibels.