VeEX FX8 Series, Руководство пользователя

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FX8x Series User Manual Page 30 of 50
9.0 Optical Return Loss Measurement
One of the lasers generates an optical signal, which is inserted into the fiber under test (FUT)
via an optical splitter. The reflected signal from the FUT comes back to the optical port, and via
the optical splitter it is directed to the Optical Power Meter. The incoming signal level is
compared to the calibration values, and the Return Loss is shown onscreen.
To enter the Optical Return Loss mode, press
|MODE| until ORL is indicated in the top left
corner:
ORL mode
9.1 Calibration before ORL measurement
Before ORL measurement, calibrate the test unit:
1. Press |F2| (LASER) , to get the Laser submenu onscreen: