Teledyne LeCroy USB Protocol Suite User Manual (Voyager_Advisor T3_Mercury) - Manual (Page 293)

USB Protocol Suite User Manual 293
Recording Rules ‐ USB 2.0 Teledyne LeCroy Corporation
 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)
Figure 10.24: Event Properties Dialog
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.