See what the silicon sees Validating signal integrity on high-speed I/O (HSIO) buses doesn’t have to be a shot in the dark. Unlike many of the probe-based testers which extrapolate what the signal looks like, ScanWorks HSIO shows you the very signal that the receiver is seeing. Can’t get more accurate than that! Faster is inevitable, especially when it comes to high-speed input/output (HSIO) buses and device interconnects. Unfortunately, each additional gigabit per second (Gbps) or giga-transfer per second makes the task of validating signal integrity that much more challenging. As speeds increase beyond 5 Gbps simple probing can return unreliable results.