... It can hold two redundant optical receiver modules, two redundant return path transmitter modules, one RF or IP status monitor ... up to 108dBuV@-1dBm Two optical receiver modules (redundant) Two optical transmitter modules (redundant) FP, DFB or CWDM return ... portReturn LossdB1645~550MHz14550~870MHzImpedanceOhm75CNRdB≥5159 PAL CW carrier, 1310nm transmitter, 4.0% OMI, 10km optical fiber plus attenuator ...