... dual Power Supply 4.OEM Service OEM Economic type 1550nm Externally Modulated Optical Transmitter,FWT-1550EC-1X5FWT-1550EC series,CNR≥51dB , ... series of characterized optimization and technical innovation,FWT-1550EC optic transmitter can reach excellent index with flatness ≤0.75dB in ... SC/APC,FC/APCRF ParametersBandwidth(MHz)45-862 Input level(dBmV)23±5AGCFlatness(dB)≤±0.7545~862MHzReturn loss(dB)> ...