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OTDR Launch Cables are used in conjunction with an OTDR to measure complete link loss of a fiber. These are known as pulse suppressor cables, launch cords, launch leads, receive cables or fiber rings. These cables connects the OTDR to the link-under-test, discloses the insertion loss and reflectance of the near-end connection. A receive cable, which is connected to the far-end of the link, exposes the insertion loss and reflectance of the far-end connection. A fiber ring serves as both a launch cable and a receive cable.