There are many protocol analyzers with class-level decoding, but the visibility provided by real-time class-level decoding can make the difference between an outstanding and an average tool. Whether you are developing HID, mass storage, hub, or audio devices, the benefit of having the high-level USB class data decoded immediately as it occurs on the bus can save hours of debug time and frustration. For example, when decoding a keyboard, developers can actually see all the decoded key strokes in real-time right in the transaction window.
With Data Center 3.5, engineers can efficiently debug and see all the data, from the automatically parsed high-level class data to low-level bus states, as it occurs on the bus in real-time. Here are a few time-saving features highlighted in the "Introducing Class-Level Decoding" video:
Hierarchical Grouping: