Handling Error (DRF, or Data Related Flag) Events
The interpretation of error events depends on the type of communication line that the capture came from in the same way that signal change events do. Error events are encoded in a single byte. As of this printing, the encodings are:
As with signal changes, the only way to be sure that the encoding hasn't changed is to start the protocol analyzer, open the Set I/O Configuration window and click the Names button. The errors will be listed in this window in order, where the top item is the low bit.