The FLS-600 light source by EXFO America is engineered to enhance testing efficiency and deliver reliable performance for both singlemode and multimode fiber applications. Compatible with a variety of fiber connector types, including ST, SC, LC, and E2000, this device supports up to three singlemode wavelengths—specifically 1310 nm, 1550 nm, and either 1490 nm or 1625 nm—on a single port, while also accommodating two ports for multimode testing at 850/1300 nm and 1310/1550 nm. Its EF Ready feature ensures compliance with external launch mode conditioners for accurate multimode results, simplifying the testing process with time-saving, error-free functionalities. Additionally, the FLS-600 offers controlled multimode launching output, making it an invaluable tool for fiber continuity checks and link-loss characterization, all backed by a three-year warranty for added peace of mind and low cost of ownership.