The optional VFL port in the Silicon ZOOM 2 VFL can be used as a troubleshooting tool to determine if there are breaks, micro-bends,
or any other anomalies causing excessive loss within the first few feet of the fiber under test located in the splice tray. The bright red
laser injects high-intensity red laser light into the near-end connector. If this light encounters any anomalies, such as a break or a
micro-bend, the light is deflected into the fiber jacket, producing a red glow at the point of the anomaly.
Follow the steps below:
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.
Power on the VFL. See page 18 for instructions on operating the VFL port.
Inspect the splice tray for anomalies. Optical fiber jackets are differently colored, making it is difficult to see red light shining
through, so for best results, it is recommended to keep the room light at a minimum.
13
OPERATION/MAINTENANCE
VISUAL FAULT LOCATION
ST connectors shown here;
connector style may vary
dBm
20.00
-
850
nm
