Fiber Loop back is designed to provide a media of return patch for a fiber optic signal; typically it is used for fiber optic testing applications or network restorations. For the testing applications, the loopback signal is used for diagnosing a problem. Sending a loopback test to network equipment, one at a time, is a technique for isolating a problem. Sophenol's SC Loopback Module provides a return signal for fiber optic equipment which can be using for testing purposes and isolating any network issues. Item Details: Connector Types Mode: Singlemode Fiber Mode: 9/125um Jacket Type: PVC Durability: Over 500 cycles (=0.2dB) Reflectance: Min. 20dB Applications : CATV, metro Test equipment Telecommunication networks Local area networks (LAN) Wide area networks (WAN) Premise installations Data processing networks Video and military active device termination Packing information : 200pcs put into a carton, the weight is 10kg, the carton size is 38x38x28cm.