The optional VFL port in the WaveTester optical power meter can help take the guesswork out of identifying ports in a fiber patch
panel or checking polarity of a duplex connector. Connect the VFL port to one end of a fiber link, and the high-intensity, precision-
coupled red laser diode will allow the user to visually identify the port by the presence of a red glow emitting from the connector on
the other end, allowing for visual port identification of fiber optic links up to 5 kilometers (3.1 miles) away.
Follow the steps below:
Connect the VFL port to the fiber under test. It is recommended to use a fiber patch cable as shown below to avoid
handling the fragile jacketed fiber in the splice tray .
Power on the VFL. See page 46 for instructions on operating the VFL port.
the laser light exiting the fiber is very bright and could cause damage to your eye if viewed directly!
do NOT insert an APC (Angled Physical Contact) connector in to the VFL port as this could damage the
angled ferrule on the APC connector
.
Inspect the far-end connectors for the red light exiting the connector.
To assist with viewing of the light exiting the connector, hold a piece of white paper in front of the
connectors. This will sufficiently diffuse the light for safe viewing.
OPERATION/MAINTENANCE
VISUAL FIBER IDENTIFICATION
Symbolic
Fiber
Link
48
dBm
20.00
-
850
nm