... 4,high return loss SC-FC fiber optic adapter Fiber optic Adapters are used to calibrate two fiber optic connectors.Features:1,Accord with the ... dimension3,Ceramic or bronze sleeve4,Low insertion loss less than 0.2 dB, high return loss more than 50 dB5 ... one thousand , repeatability is less than 0.2 dBApplications:1,Telecommunications, access network2,Optic fiber CATV3,LAN and Access Network4,Terminal of ...