Logic analyzers and deep-memory scopes learn to march in lock step

摘要

Logic analyzers and oscilloscopes sit side by side on the digital designer's workbench. Even so, during design and debug, the two instruments usually function independently―except when designers need to correlate anomalies in digital data with the signals' analog characteristics. Unfortunately, using the two instruments in a well-correlated fashion has been difficult, imprecise, and time-consuming. Cross-instrument measurements, have been hampered by a lack of tools for quickly and accurately deskewing or time-aligning traces and by the absence of sufficient memory depth in all but the most expensive scopes. Fortunately, recent advances in both scope memory depth and in automated deskew have opened the door to quick and accurate time-correlated measurements.