New to Signal Integrity analysis, or just need to brush up on the fundamentals? If so, this white paper is aimed at you. This white paper starts at the very basic, actually before the fundamentals, answering the question “What do I need to know?” The paper begins by identifying and analyzing critical nets. Next, it discusses transmission lines and the problems that arise from the high-frequency noise generated by rapid edge-rate signals. Finally, impedance is reviewed and discussed in the context of impedance and signal integrity.