FI-60 Not displaying tone on fiber

Photo posted by viavisupport on Jun 25, 2020



My FI-60 LFI head is not detecting my tone on the fiber. Instead of displaying the tone frequency, it just says TRAFFIC.


This can happen if the jacket of the fiber jumper is quite thick. Try a fiber with thinner jacket. The LFI head is capable of showing the tone frequency for  270Hz, 330hZ, 1Khz or 2Khz. See examples of thin versus too thick fiber in the attached picture.

Software/Hardware Version


Ticket Number

Photo Details

  • File size
  • 1.7 MB
  • Photo size
  • 3096x4128