The PSB/SPSB Launch Cable/Pulse Suppressor Box, manufactured by EXFO America, is an essential tool for fiber optic testing, specifically designed to eliminate the dead zone of an Optical Time Domain Reflectometer (OTDR). This innovative device facilitates accurate loss measurement on the first and last connections of a fiber under evaluation, making it invaluable for technicians who demand precision and reliability. Available in both portable soft pouch (SPSB) and rugged stand-alone configurations (PSB), this system offers versatility with multiple standard lengths and options for singlemode and multimode fiber. Equipped with a wide selection of connectors, it ensures quick connection to most OTDR and patch panel ports, enhancing operational efficiency. Whether working with singlemode fibers operating at 9/125 µm or multimode fibers at 62.5/125 µm and 50/125 µm, the PSB/SPSB is built to meet diverse testing needs effectively, reinforcing its importance in splicing, placing, and locating equipment used in the telecom industry.