Benchtop unit is for injecting a programmable level of noise into an optical signal, creating a precisely defined signal-to-noise ratio. Useable with wavelengths from 1528 to 1563 nm (C-Band). Compatible with 9/125 micron core/cladding fiber, with angled FC/APC connectors. Touch screen interface for stand-alone operation. GPIB and Ethernet interfaces for computer control. The ITU Grid filter is 50 GHz for this option.