LeCroy USB Mobile HS, Руководство пользователя

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USB MobileHS User Manual Chapter 10: Recording Options
LeCroy Corporation
115
Use any combination of the listed errors as a Trigger.
• Bit Stuffing, Frame-Length, CRC, Pid, EOP, Short Byte checkboxes -
Select one or more of these errors to set these as the basis for triggering or
filtering. A Short Byte is a condition where EOP begins on a non-byte
boundary.
• 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.