The fiber test module includes a visual fault locator that helps you do the following:
- Quickly check fiber continuity. Trace fibers to determine the polarity of duplex connections and identify connections between patch panels.
- Locate breaks and bad splices. These faults scatter the locators light, causing a red glow in the affected area.
- Reveal high-loss bends. If the locators light is visible around a bend in a fiber, the bend is too sharp.
- Reveal problems in connectors. A damaged fiber inside a connector causes a red glow in the connector.
- Optimize mechanical splices and pre-polished connectors: Before sealing the splice or connector, adjust the fiber alignment for minimal glow where the fibers meet. (Follow the manufacturers assembly instructions for splices and connectors.)
- The visual fault locator port accepts connectors with 2.5 mm ferrules (SC, ST, or FC). To connect to other ferrule sizes, use a patch cord with the appropriate connector at one end and a SC, ST, or FC connector at the tester end.
- The light should be visible up to 2 km on multimode cable and 5 km on singlemode cable.
To use the visual fault locator:
- Clean the connectors on the patch cord, if used, and the fiber to be tested.
- Connect the fiber directly to the testers VFL port or connect using the patch cord.
Look for the glow to locate fibers or faults.
Note:
The locators light may not be visible through dark-colored fiber jackets.
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