Mentor Graphics HyperLynx 9.4 HyperLynx® Signal Integrity (SI) generates fast, easy and accurate signal integrity analysis in PCB systems design. HyperLynx SI helps engineers efficiently manage rule exploration, definition and validation, ensuring that engineering intent is fully achieved. The software is tightly integrated from schematic design through final layout verification. It can quickly and accurately resolve typical high-speed design effects including over/undershoot, ringing, crosstalk and timing.