Operation Manual

9-1
Chapter 9: Locating Fibers and Faults
with the Visual Fault Locator
Note
The fiber modules are not compatible with the
DTX-ELT. The OTDR module is not compatible with
the DTX-ELT, DTX-CLT, or DTX-CLT CertiFiber.
Visual Fault Locator Applications
The DTX-MFM2, DTX-SFM2, DTX-GFM2, and DTX Compact
OTDR modules include 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
locator’s light, causing a red glow in the affected area.
• Reveal high-loss bends. If the locator’s 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 manufacturer’s assembly
instructions for splices and connectors.)