Telecommunications, Fiber Optic, FIBER OPTIC ACTIVES - 1550 nm CATV Fiber Optic Transmitter, FEATURES & BENEFITS, 1U 19 in. rack housing, front LCD display, 1550 nm externally modulated with dual outputs, Patented Linearized Mach Zehnder Modulator, Adjustable SBS suppression for 1550 nm, 13 dBm threshold, 1550 nm 16 dBm SBS, threshold, 1550 nm 17 dBm SBS threshold, and 1550 nm adjustable SBS threshold, Automatic or manual gain control ...