... Perfect inner automatic microcomputer-controlled circuit 19,1U CATV Optical Fiber Amplifier/ 1550nm Optical fiber Amplifier Features: 1. Using the capability erbium ... 2×5, 2×6, 2×9, 2×10Optional)Optical return loss≥50dBOptical fiber connectorSC/APCRFFrequency range47-862MHzInput level78-98dB ... -D/59CHCNR1≥53dB(Back to back)CNR2≥52dB(65Km optical fiber, 0dBm receive)CTB≥65BCSO≥65dBSBS restrain13, 16, ...