The optional VFL port in the Silicon ZOOM 2 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:
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.
Power on the VFL. See page 18 for instructions on operating the VFL port.
Inspect the far-end connectors for the red light exiting the connector.
Connect the VFL port to the fiber under test. The VFL port is located on the left-hand side, as shown in the diagram below. It
is recommended to use a fiber patch cable as shown below to avoid handling the fragile jacketed fiber in the splice tray.
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
.
the laser light exiting the fiber is very bright and could cause damage to your eye if viewed directly!
14
OPERATION/MAINTENANCE
VISUAL FIBER IDENTIFICATION
Symbolic
Fiber
Link
ST connectors shown here;
connector style may vary
dBm
20.00
-
850
nm
