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WHITE PAPER
Logic Analyzers: Boosting the Power of Protocol Analyzers
Logic analyzers are an engineer's general-purpose tool for development and testing of digital systems, such as embedded systems and network equipment. Logic analyzers recognize a digital signal as either low or high, with a pre-defined threshold. Typically, logic analyzers examine multiple digital signal channels simultaneously and trigger on complex patterns of highs and lows. By identifying the timing relationship among multiple signals, logic analyzers help engineers debug digital systems and discover the source of error symptoms easily and efficiently. Protocol analyzers, on the other hand, analyze digital events using multiple-layer protocols. Protocol analyzers deconstruct received packets, extract information from the data streams, and present that information in a structured, easy-tounderstand format. Although each protocol analyzer must be used with its specific architecture, protocol analyzers help engineers significantly in detecting and troubleshooting errors quickly and efficiently, through their presentation of digital data and the protocol-specific features and functions offered. The two types of analyzers, logic and protocol, are often considered competitors. However, what if they operated cooperatively as a single ultra-powerful solution? Finisar's Bus Doctor? RX logic analyzer views complete system activity, capturing multiple signals simultaneously and triggering on sophisticated signal patterns with high-speed timing resolution. Integrated with protocol analyzers on Finisar's Bus Doctor RX platform, the Bus Doctor logic analyzer becomes a partner, rather than a competitor, to protocol analyzers. This gives engineers the unique opportunity to view comprehensive digital data on a single universal platform.
