![]() ![]() For example, you could run the check on a subset of the design or on specific signal nets ( called Object Lists). ![]() As a hardware design engineer, do you really care about every 1-mil trace-segment impedance violation between driver and receiver pins?ĭoes a design rule checker make your PCB flow more efficient if you have to comb through 1000’s of design violations to eliminate the ones that you can ignore?Ĭompared to the cookie-cutter DRC coverage claimed by some PCB design tools, HyperLynx DRC lets you tune DRCs to meet your own needs. This approach may be good enough for quick checks and academia, but it lacks control. Some layout-tool DRCs only allow you to provide a minimum and maximum allowed impedance value, implying that all trace segments outside the bounds are considered to be violations. Take trace segment impedance checking for example. ![]() To ensure design performance, physical rule checks are not enough you also need electrical checks. However, the “devil is in the details”… quite literally. The point is, it’s easy to compare the “names” of DRCs in PCB layout tools with those in a dedicated design rule checker such as HyperLynx DRC and conclude that they are equivalent. But, even if copper-to-copper clearances are met, does that imply that the design will work? (Hint: No.) Some layout-tool DRCs even have access to a rudimentary field solver and ensure that copper-to-copper clearances are met. Sure, most PCB layout tools have some form of design rule checking (DRC) functionality that is available via a menu pick within the layout tool itself. You’ll quickly find that HyperLynx DRC provides functionality that other PCB design checkers cannot. The software and rules are yours to keep without obligation. The answer is a resounding NO! To prove it, we’re giving away eight electrical DRCs that you can try for yourself. ![]()
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