Optical system testing instrument FHO-LCB Launch Cable Box Description Grandway provides high performance Launch Cable Box with interchangeable SC/FC/ST adapters in UPC or APC polishing end face. It is used to aid in the testing of fiber optic cable when using an OTDR. The OTDR Launch Cable Box is used with Optical Time Domain Reflectometers (OTDRs) to help minimize the effects of the OTDR's launch pulse on measurement uncertainty. Specially designed for Grandway' s FH05000 Series OTDR, Launch Cable Box can be fixed on the rear of FH05000 Series OTDR by screws as standard accessories in the package. Features • Compact, easy to carry • Case can house up to 1,000 meters of fiber • Attachable with FH05000 Series OTDR Applications • Training and calibration • Installation and testing by OTDR