Fluke Visual Fault Locator
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Product Information for Fluke Visual Fault Locator

Highlights for Fluke Visual Fault Locator

In today's fast-paced workplace maximizing productivity is essential. Whether installing new fiber links or troubleshooting an existing network, the faster you can locate a problem, the faster you can fix it. That's easier said than done when you are faced with a complex network of fibers, connectors and patch cords.

You can diagnose and repair simple fiber link problems with Fluke Networks' VisiFault™ Visual Fault Locator (VFL). The laser-powered VisiFault locates fibers, verifies continuity and polarity, and helps find breaks in cables, connectors and splices. Continuous and flashing modes make for easier identification. Compatible with 2.5mm and 1.25mm connectors for easy connection. Ruggedly constructed for demanding field-testing. Long battery life for hours of use.


  • Locates faults including tight bends, breaks and bad connectors
  • Accelerates end-to-end fiber checks
  • Easily verifies polarity and identifies fibers
  • Features continuous and flashing modes
  • Ergonomic case survives drops, impacts and vibrations
  • Supports 2.5 mm and 1.25 mm SFF connectors
  • Over 80 hours of battery life with two AA batteries

Technical Specifications


  • Fiber compatibility: Multimode and Singlemode
  • Wavelength: 650nm (visible wavelength)
  • Laser safety rating: Class II
  • Output power: .0mW max
  • Output modes: Continuous (steady) and flashing (2-3Hz pulsed)
  • Range: 3 km multimode, 4 km singlemode

Environmental and mechanical

  • Operating temperature: 0 °C to 40 °C
  • Storage temperature: -20 °C to 60 °C
  • Relative humidity: 95% (10 to 35 °C)
  • Vibration: Random, 2g, 5-500 Hz
  • Shock: 1m drop onto all corners and face
  • Altitude: 3000m


  • Dimensions: 157 x 52 x 37 mm (6.2 x 2.0 x 1.3 inch)
  • Weight (including batteries): 0.18 kg (5.7 oz)
  • Adapter: 2.5mm universal
  • Adapter cap: Tethered protective end cap
  • Controls: On/off, continuous/flashing
  • Battery type: 2 x AA
  • Battery life: > 80 hours in continuous mode
  • Safety: CSA C22.2 No. 1010.1 1992, EN 61010-1, CE
  • Carrying Case: Soft sided with belt loop