Fully automated Transmitter Dispersion Eye Closure (TDEC) measurement and 100GBASE-SR4 conformance test solution accelerates and facilitates process of ensuring new product designs conform to IEEE 802.3bm optical specification. Turnkey solution, based on DSA8300 equivalent time oscilloscope equipped with 80C15 optical module, supports full clock recovery and TDEC automation beyond 25.781 Gbps.