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Chapter 11: Recording Options
Errors
Select Errors under Event Groups to display the Errors window:
Use any combination of the listed errors as a Trigger.
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Bit Stuffing, Frame-Length, CRC, Pid, EOP Checkboxes: Select one or
more of these errors to set these as the basis for triggering or filtering.
•
Time-out Violation: Select this checkbox and then enter in the Turn-around
time in the text box. This value tells the Analyzer how much time should
elapse before triggering/filtering. Clocks are 60 MHz (with a resolution of
16.66 ns).
•
Excessive Empty Frame Detection: Select this option and enter the empty
frame count in the text box. This value tells the Analyzer how many frames
should elapse before triggering/filtering.
Babble Start Violation: Select this checkbox to trigger or filter whenever the
•
start of a packet occurs too late in a Frame.
•
Babble End Violation (or LOA): Select this to trigger/filter when the end of a
packet occurs too late in a Frame. Enter a value in the EOF offset box from 1
to 65,535 clocks to indicate the size of the offset from start of previous SOF.
•
Bad Data Toggle: Select this checkbox to trigger or filter whenever a Data0,
Data1, Data2 toggle violation occurs.
•
Select IN or OUT if you only want triggering/filtering to occur only on IN
or OUT transactions.
•
Check Incl. Reset if you want the first toggle value after a reset to be
considered "good" regardless of the value prior to that reset. If
Unchecked, toggle state is assumed to be preserved through the reset.
•
Select Addr and/or Endp to select Token Addresses and/or Endpoints.
USBAdvisor User Manual
LeCroy Corporation
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