Teledyne LeCroy USB Protocol Suite User Manual (Voyager_Advisor T3_Mercury) - Manual (Page 214)

Teledyne LeCroy Corporation Error Summary
214 USB Protocol Suite User Manual
9.3 Error Summary
The Error Summary details all errors analyzed throughout the recording. After the report
displays, click USB 2.0 Errors (see
Figure 9.5 ) or USB 3.0 Errors (see Figure 9.6 on
page 216 ) to view the respective errors.
 Select Error Summary under Report in the Menu Bar
OR
 Click in the Tool Bar to display the Error screen below the Trace View:
9.3.1 USB 2.0 Errors
The figure below and the table following it list and describe the USB 2.0 errors.
Figure 9.5: Traffic Summary Report (USB 2.0)
The following table lists each USB 2.0 error type and its description.
Error Type Error Description
Bad PID
The Packet ID is malformed. Either it is not a USB 2.0
Specification defined value, or the upper nibble is not equal to
the inverted bit value of the lower nibble.
Bad CRC5
The CRC5 field has an incorrect value. The packet is corrupt
(either the data or the CRC itself).