The PSB/SPSB Launch Cable/Pulse Suppressor Box by EXFO America serves as an essential tool for fiber optic testing, designed to significantly minimize the dead zone of an Optical Time Domain Reflectometer (OTDR). Available in both singlemode and multimode fiber configurations, this device delivers precise loss measurements at the initial and final connections of the fiber under test. Users can choose between a rugged stand-alone version housed in a durable carrying case or a soft, portable design for increased convenience. Featuring a contiguous fiber design for enhanced accuracy in connector loss, the PSB/SPSB models include external patchcords, making them ideal for a variety of testing applications in the field.