Check the listing for details. Fiber Optic OTDR Launch Cable Box,Singlemode 2km SC/APC–SC/APC - 378162. Condition: New. Listed at 600.00 USD. Fiber Optic OTDR Launch Cable Box, Singlemode, SC/UPC-SC/UPC An OTDR launch cable, which connects the OTDR to the link-under-test, discloses the insertion loss and reflectance of the near-end connection. It is often available on a small spool or within a “launch box”, which is used to create the proper conditions for testing another similar optical fiber for faults. This method avoids undesirable variations in loss and distance measurements. A launch fiber will help to overcome the blind spot or Dead Zone of an OTDR brought about by high launch power or faults near the launch end of the fiber.Fiber Type9/125 SinglemodeLength1kmConnector 1SC/UPCConnector 2SC/UPCMaterialSR PolypropyleneTypical Loss< 0.5dB@1310nM for 1000 metersOperating temperature-40~ +55°CDimension238x141x66mm