EXFO Inline Power Meter - Manual (Page 27)

Using the Optional Power Meters and VFL
Power Meter and VFL 23
Identifying Fiber Faults Visually with the VFL
Identifying Fiber Faults Visually with the VFL
The optional visual fault locator (VFL) helps you identify bends, faulty
connectors, splices and other causes of signal loss. It can also help the
person at the other end of the link to identify the fiber under test, which
could be particularly useful when working with cables containing many
fibers.
From its dedicated port, the VFL emits a red signal which becomes visible
at the location of a fault on the fiber. This signal can be continuous (CW) or
blinking (1 Hz).
W
ARNING
When the VFL is active, the VFL port emits visible laser radiation.
Avoid exposure and do not stare directly into the beam. Protect any
unused port with a cap.