The first handheld tool for performing live tests on fiber optics and identifying polarity issues and failed transceivers has been launched by Fluke. The FiberLert tool detects invisible near-infrared (850 nm to 1625 nm) wavelengths used in fiber-optic communications to troubleshoot cables, ports, polarity and transceiver issues.

Designed for one-handed operation, the pocket-size tool allows users to test for the presence of near infrared light without needing complicated setups, or having to interpret data. When placed in front of an active fiberSource: Fluke optic port or patch cord, the tester emits a continuous light and an optional tone.

The new tool removes the guesswork in determining communications issues by indicating where signals are present and where they are not. This allows users to pinpoint and remedy the cause of problems such as failed transceivers or patch cords. It supports single-mode, multi-mode, UPC/APC patch cords and ports, and can test without making contact with the port or patch cord, reducing the risk of contamination or damage.

A flashing LED indicates a powered-on condition and good battery. A timer shuts the tester off after five minutes of inactivity to extend battery life in a rugged device design that includes a convenient pocket clip.