The LB5601 is a high-precision, mandrel-free insertion loss (IL) and return loss (RL) test station, designed for accurate optical measurements across fiber cables, connectors, and passive components. Ideal for R&D labs, quality control, and manufacturing lines, this bench-top unit offers fast, reliable testing without the need for fiber mandrel wrapping, ensuring speed and simplicity.

With support for multiple wavelength ranges—1310/1550 nm, 1490/1625 nm, and 850/1300 nm—the LB5601 adapts to a wide variety of optical network testing applications. It features excellent return loss measurement up to 75 dB and high insertion loss accuracy with ±0.03 dB linearity. This device is also available in a dual-channel version to accelerate test processes in production environments.

Its integrated VFL module, USB communication, and universal connector compatibility (FC/APC, φ2.5 mm, φ1.25 mm, and bare fiber adaptors) further enhance its versatility. Thanks to its mandrel-free minimum distance of 1.7 meters, this test station is particularly useful for measuring optical return loss on cables that cannot be wrapped during testing.

Compact, stable, and precise, the LB5601 offers a complete solution for professionals seeking dependable IL/RL measurements in optical communication systems.