... ,MU,MTRJ,E-2000,ST,SC/ST,FC/ST,SC/FC Fiber Optic AdaptorParameterUnitDescriptionInsertion Loss (Typical)dB≤0.2Return LossdBPC≥45UPC≥50APC≥60Mechanical ... /PCST/PC/UPC(Ceramic sleeve)TBC-2LC-2LC Duplex(Level type)TBC-2LC-3LC Duplex(SC Model)TBC-LC-1LC SingleTBC ... (SC/ST/FC)TBC-SCAdjustable attenuator(SC/ST/FC)TBC-LCYin and yang-type attenuator (LC)TBC-FCYin and yang-type attenuator(FC,SC,ST ...