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You are here:   » Products » Optical Technologies » Equipment » Fiber Optic Service & Maintenance » Handheld Testers » Fault Locators » High Resolution Fault Locator for Last Mile FTTx Testing

Fault Locators

High Resolution Fault Locator for Last Mile FTTx Testing

Key Features

  • High Resolution
  • Minimum Dead Zones
  • High Dynamic Range
  • In Service Testing
  • Bluetooth Interface
  • Tablet-PC Controlled


The LF-120 is a tool for short fiber fault location applications. It helps troubleshooting FTTx drop cables and other similar cable installations. Approval of the original assembly after installation, monitoring of possible degradation for preventive maintenance purposes and troubleshooting in case of a fault in the system are typical applications.

The extremely short deadzones ensure that events are found and localized, which are often missed by a standard OTDR, such as fiber breaks and bend-losses, even after a large reflection.

Working at a wavelength of 670 nm with special launch conditions makes in-service testing of FTTx installations possible without interferences. The LF-120 is remotely controlled by a Windows 10 tablet PC via a Bluetooth connection.


  • Short fiber troubleshooting
  • FTTx drop cable fault location
  • Connector loss testing from the first connector
  • Bend loss detection
  • Break location