... each port(dBm)7.0, 8.5, 10, 12, 132×7, 2×9, 2×10, 2×12, 2×13,Return loss(dB ... .5≤-65≤-65HT8529T2≥8.5≥54≥52.5≤-65≤-65HT85210T2≥ 10≥54≥52.5≤-65≤-65HT85212T2≥12≥54≥52.5≤-65 ... ≤-65HT85213T2≥13≥54≥52.5≤-65≤-65 Top-class 1550nm Externally Modulated Optical Transmitter HT8500T