Teledyne LeCroy USBTracer_Trainer - Users Manual - Manual (Page 127)

USB Protocol Suite User Manual Chapter 5: Reading a Trace
LeCroy Corporation
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5.33 View Decoded Transfers
After you set Display Options, the Trace View screen is re-drawn to display decoded
transfers in the colors and format you selected.
When you instruct the Analyzer to display USB transfers, the components of each
transfer are collected from the current recording and are grouped below each decoded
transfer. Each transfer row shows a transfer with a unique numeration, a label, and
color-coded decoding of important data.
Note: If CRC errors are found in a DATAx (2.0) packet or a DP (3.0) packet, the data in
that packet will not be promoted to the Transaction, Transfer, and so on, levels above,
since it is assumed that the data will be re-sent. The data count will show as 0 Bytes.
5.33.1 Expanded and Collapsed Transfers
You can expand a specific transfer to view its parts, which are grouped and indented
below the transfer.