Testing, Inspection and Location Komshine KFLC-2 OTDR Launch Cable Box Eliminator Multi Mode Optical Fiber Ring (OM3-100m 50/125um) OTDR optical fiber launch cable is used to measure the loss and reflectivity of the proximal connection and the remote non-corrupt insertion of the optical fiber line using OTDR. Each OTDR launch cable can be used as an OTDR transmitting and receiving cable, both of which were necessary to eliminate blind spots when measuring the complete line loss of the optical fiber with OTDR. OTDR launch cable adopts coiled design, easy to carry, compact and light. Various length options, very suitable for short, medium, long distance fiber network test applications. Use the Fibre Ring as a launch cable. Connect the Fibre Ring between your OTDR and the fibre link under test. This will allow you to measure the loss of the near-end connection. Use the Fibre Ring as a receive cable. Connect the Fibre Ring to the far-end connector of your fibre link under test. This will allow you to measure the loss of the far-end connection. By using the jump cable as a transmitting and receiving cable. You can measure the total insertion loss of the fiber link. Note: About the cable line connectors: you can send the message to us on Amazon platform. We can meet the needs that you need.