It provides system test engineers a simple but effective way of testing the transmission capability. Molded fiber optic loopbacks are also mainly available in SC and LC types, which are easy to use for fiber optic test purpose in the lab experiments or manufacturing environment. What is Loopback Cable How to use sfp loopback module and how to do sfp loopback test Loopback cable is also known as loopback plug or loopback adapter. By incorporating a rigid connector shell for fiber protection with an easy to use, ergonomic package, the fiber optic loopback module is designed for durability and performance. It integrates every part into one single body, which help save space and make it easier to operate as well as offer better protection to the whole product. Unlike the traditional fiber optic loopback cables with visible cable parts, fiber optic loopback module has its cables and fibers well protected inside the housing. Classified by the connector types, two most commonly used fiber optic loopback cables are SC fiber optic loopback and LC fiber optic loopback, while there are also FC, MTRJ, and MTP types.īesides the traditional fiber optic loopbacks, there are also molded fiber optic loopbacks (or fiber optic loopback plugs), i.e. Traditional fiber optic loopbacks (fiber optic loopback cables) can be regarded to be two fiber optic connectors on the same piece of simplex fiber optic patch cable put together, thus it forms a loop. Fiber optic loopbacks can be with various jacket types, cable diameters, connector terminations and cable lengths.
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