Teledyne LeCroy USBTracer_Trainer - Users Manual - Manual (Page 271)

USB Protocol Suite User Manual Chapter 10: Recording Options
LeCroy Corporation
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For Mobile, the supported events for USB 2.0 are:
• Packet Identifier
• Token Pattern
• SOF Pattern
• Device Request
• Data Pattern
• Bus Condition
• Errors
• Transaction
• Data Length
• Split
Notes on External Trigger In
Input threshold value for Voyager and Advisor T3 is 0.8 V.
Input threshold values for USB Tracer/Trainer are between 0.8 V and 2 V (TTL Levels).
The minimum value of the external input signal which can be input to Voyager,
Advisor T3, and USB Tracer/Trainer is 0 V. The maximum value is 5 V.
Event Properties (of the Error Event)
The dialog lists the Properties and their Values.
Note: The default values of Babble clocks and Time-out or Turnaround violation
are based on the recording speed selected in the 2.0 Misc tab. If the selected
speed is Auto-Detect, the defaults are based on Hi Speed traffic, since this
is the most prevalent speed today.
If you change the recording speed AFTER you have defined error events, the
Babble clocks and Time-out or Turnaround violation values are NOT
updated, so you can get a false trigger or a missed error.
Therefore, after you change the recording speed in the 2.0 Misc tab, delete
any error events and create new ones. The new error events are then based
on the current selected speed.