Installation Instructions

T echnical instructions for optic fibre installation testing
D N 00203719 © N okia Corporation 71 (79)
I ssue 2 D RAFT 1 - en N okia Proprietary and C o n f idential
Test measurements results are required for fibre optic attenua
evaluation; for any other specification, the Subcontractor has
declaration of compliance referring to each technical constra
i
Section 5 of this Appendix.
A.4 Installation Test Measurements
This section describes the optical tests to be carried out dur
i
verify the compliance of the system with the technical requir
e
Section 5 of this Appendix.
The Subcontractor has to perform measurements on 100% of fibre
in the system.
The optical signal at 3rd window (1550nm) has to be assumed as
value for each measurement to be performed:
• Optical Attenuation Evaluation
• Optical Length Evaluation
• Back-reflected Power Diagram.
Section 6 of this Appendix shows a measurement report model bo
attenuation and length evaluation; a copy of back-reflection
d
included in the installation test documentation.
The technique used is the Two-Point Attenuation measurement (T
as illustrated in Figure .