The key parameters of an eye diagram include: Extinction Ratio, Jitter, Crossing Ratio, Rise Time, Fall Time, and Margin. 1 Extinction Ratio The extinction ratio is defined as the ratio of the power of the "1" level to the power of the "0" level in the eye diagram,the. PLTS constructs measurement-based eye diagrams (or patterns) by convolving the calculated time domain impulse response (generated from frequency domain measurement data) with a synthesized pattern of bit sequences. It then describes different ways that information from an eye diagram can be sliced to gain more insight. For beginners, this might sound confusing—but don't worry.