Antec 17dBm 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 12th photo), adjust allowed minimum input power (For example, P in Trigger Level: Pump on -10dBm, see 13th photo). Antec sold to 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 3 pdf links below on sample 1, sample 2, sample 3, respectively, and you choose suitable sample accordingly (noise figure result is not so accurate at high signal input). Output power 17dBm is verified at 4dBm and even at -2dBm input over C-band. Gain is quite flat over C-band at -2dBm and 4dBm inputs, and gain flatness is not too bad at -8dBm input.
Datecode: Sample 1: Sept. 1998, Sample 2: Feb. 2000, Sample 3: Jan. 2000.