VeEX OTDR FX150+ Series, Руководство пользователя

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OTDR Series e-Manual, D07-00- 076P -RevD00 Page 53 of 109
6.9 Visual Fault Locator (VFL)
The unit is equipped with an optionally built-in Visual Fault Locator (VFL) to trace and visually
identify breaks in ODFs, bare fibers (900 µm), and patch cords that are typically hidden in the
OTDR dead zone.
The VFL works by injecting a 650nm visual red light into the fiber (up to 5 kilometers/3 miles)
to bend a single fiber strand and force light to exit the center of the fiber. It traces it to identify
faults through light leakage. It identifies fiber strands, connectors, breaks, bends and other
potential problems or anomalies on events.
To see the most recent VFL specifications, go www.veexinc.com .
PROTECT YOUR EYES!
Never look directly into the VFL’s light. It is a Class II laser and emits laser
radiation that can potentially harm your eyes with extended exposure. It is good
practice to never look directly into any fiber connector for any reason.
Use the Home icon (FX150/FX300) or App key (FX300) to toggle between active test
applications (OTDR, OPM, VFL).
VFL can be used with OTDR simultaneously.