Antec 22dBm EDFA instrument over C-band, in 19-inch 1U rack. Minimum input power: -10dBm. From front panel, user can adjust output power by changing attenuation at optical output(see 10th photo), adjust allowed minimum input power (For example, P in Trigger Level: Pump on -10dBm, see 11th photo below). Antec sold to Arris or Scientific Atlanta, then sold to Cisco. See very-similar-model specification at the 1st pdf link below, and more info at 2nd pdf link below. In our lab test, on EDFA front panel: Set Atten=0dB, allowed minimum input power -10dBm. See our lab test result of gain, noise figure, and output power at -8dBm, -2dBm, and 4dBm input power at last pdf link below (noise figure result is not so accurate at high signal input). Output power 22dBm is verified at 4dBm and -2dBm input over C-band. Gain is quite flat over C-band at -8dBm, -2dBm, and 4dBm inputs. Note: In our very early examination, there is warning message on sample 2: ”Warning: Pump 2 current high”. But this warning message was disappeared in our standard regular test. We cannot guarantee this equipment can operate long time, so equipment is ‘Sell As Is’, ‘No return’. Last 12 photos below only showing LCD are from similar model LLOA-17A, but the features of these two models are same.