The USB4 Version 2.0 specification marks a departure from uniform transmission speeds, introducing asymmetric links where one direction may operate at 120Gb/s while the return path functions at a lower rate, such as 40Gb/s. This dynamic bandwidth allocation is critical for high-throughput tasks like real-time Ultra-High Bit Rate (UHBR) DisplayPort 2.1 video processing. The Voyager M4120 provides the granular visibility required to monitor how devices negotiate these lane roles and adapt to fluctuating workloads.
In section Releases
Teledyne LeCroy Debuts 120Gb/s USB4 Protocol Analyzer
Engineers now have a dedicated tool to navigate the complexities of USB4 Version 2.0 as Teledyne LeCroy launches the Voyager M4120. This system serves as the industry’s first protocol analyzer capable of emulating and verifying Asymmetric Link configurations, which allow data to travel at varying speeds across different connection lanes.
Jeff Ravencraft, President and COO of the USB Implementers Forum, noted that the tool provides essential validation for these advanced link characteristics, ensuring interoperability as the technology reaches the market. Beyond its primary 120Gb/s capabilities, the analyzer maintains full backward compatibility with legacy USB generations. Equipped with hierarchical data displays and an automation API, the system is designed to streamline troubleshooting and accelerate product development cycles for hardware manufacturers.
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