Promax PROLITE-63, Руководство пользователя

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APPENDIX A: APPLICATION NOTE
AUTOMATIC MEASUREMENT OF THE OPTICAL ATTENUATION FOR A FIBRE
NETWORK AT WAVELENGTHS: l=1310 NM, l=1490 NM AND l=1550 NM.
Next it is described the procedure to take attenuation measurements for an
optical communications network at the wavelengths of 1310 nm, 1490 nm and
1550 nm by using the PROLITE-63 and the automatic mode of the
PROLITE-105.
The attenuation or losses in a cable or optical device corresponds to the
difference between the input coupled power and the output obtained power.
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Measuring the reference power
Before initiating the network attenuation measurement process, it is advisable
to register first the power measurement generated by the light source in
combination with a PROLITE-63 and saving them in the memory. By this way
when measuring later the attenuation of the optical network, the PROLITE-63
will indicate directly the value of the attenuation.
Next, the procedure is described (see figure below).
Figure A1. Measurement of the reference power.
30 January 2014