Exfo FOT-930 Multifunction Loss Tester Manual de usuario descargar pdf (Pagina 49)

Multifunction Loss Tester 41

7 Measuring Optical Return Loss

Optical return loss (ORL) is the total effect of multiple reflections and

scattering events within a fiber-optic system.

The FOT-930 Multifunction Loss Tester is equipped with an ORL meter to

measure ORL for singlemode fibers. The ORL meter uses the F

ASTEST SM

(singlemode) port only.

The following functions are available on your ORL meter:

ORL meter port

Open lists to change cable/fiber

name of next saved data.

Press Store to save current ORL

value under displayed name.

Measured ORL

(positive value)

Current ORL wavelength

Open list or press Wavelength

to switch between singlemode

wavelengths.

Press ORL Zero to calibrate

the ORL meter sensitivity.

Press Default ORL Zero to revert to

factory-default sensitivity.

Press ORL Reference to set reference

using ORL calibrated patchcord (best).

Press Loopback Ref. to use

any other patchcord.

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Exfo FOT-930 Multifunction Loss Tester Manual de usuario Pagina 49