FC fiber optic adapter 1,With high precise dimension 2,Ceramic ... are used to calibrate two fiber optic connectors.Features:1,Accord with the standard of ANSI, Bellcore, ... bronze sleeve4,Low insertion loss less than 0.2 dB, high return loss more than 50 dB5,Interchangeability ... thousand , repeatability is less than 0.2 dBApplications:1,Telecommunications, access network2,Optic fiber CATV3,LAN and Access ...