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The article discusses the use of cross-bus analysis, which include various buses such as serial ATA, HDMI and PCI Express (PCIe), in resolving problems related to communications network. In a standard-specific protocol analyzer with a logic analyzer, the former takes care of the serial acquisition while the logic analyzer captures parallel bus data. In a system integrating both serial and parallel acquisition modules into the logic of analyzer mainframe, a mix of PCIe serial and parallel acquisition modules within a single system is allowed.

The article discusses the importance of a good protocol analyzer in designing or troubleshooting universal serial bus systems. The two approaches to data capture which are supported by available instruments are identified. The factors that must be considered when buying a universal serial bus protocol analyzer are cited.