system-to-system correlation that can normally slow product release; HYDRA MTS that solves the issues of calibration, instrument drift, and system-to-system correlation that normally slow design cycles; and optical standard tester-ST that accurately generates various optical impairments, including optical signal-to-noise ratio, as well as automates performance and conformance testing of 10 Gb/s devices and systems. It also provides OSS-RW that offers creation of different optical impairments for testing performance of 10 Gb/s devices; OST-SRS provides stressed receiver sensitivity conformance testing of 10 gigabit Ethernet devices; and A3318 that enables the OST to make stressed eye measurements. In addition, it offers long reach multimode solutions that offer a scant 100m coverage with conventional 850nm optics; protocol layer testing; electronic dispersion compensation testing; and system level testing solutions.