The PCVFL (Precision Coupled Visual Fault Locator) is a light-weight, hand-held tool used to quickly troubleshoot faults in the continuity of both single-mode and multimode fibers, especially at fiber launch points or in OTDR dead zones.

A high-intensity visible red laser beam is precision-coupled into a optical fiber; breaks and micro-bends in the fiber deflect the red light into the fiber jacket, producing a red glow at the point of the fault. Additionally, the PCVFL can be used as an end-to-end visual fiber identifier, which is useful for locating fibers terminated in poorly labeled or unlabeled fiber patch panels.

A single switch is used to operate the PCVFL, toggling the unit between OFF, CW (continuous wave), and Pulsed modes. Typical battery life in CW mode is 15 hours, and the short 12.5% duty cycle in pulsed mode extends the battery life to 120 hours of continuous use.

The PCVFL ships standard with a 2.5mm universal connector port, which allows for connection to ST, SC, and FC connectors. Extreme caution must be exercised when operating the PCVFL. Lasers such as the ones in the PCVFL produce intense beams of laser light that are harmful to the eye.

TO ENSURE YOUR SAFETY: NEVER LOOK INTO A LIGHT SOURCE OR THE END OF A FIBER THAT MAY BE ENERGIZED BY A SOURCE!
Exposure to such energy can cause serious retina damage, and prolonged exposure can cause blindness.