Teledyne LeCroy Inspector - Users Manual - Manual (Page 26)

CATC CATC Inspector User’s Manual Version 2.31
22
Data String: This option permits the definition of a trigger event as a specified bit sequence,
using the following dialog box:
When searching specifically within a DATA0 or DATA1 packet, the Inspector hardware restricts
the length of the bit string to 8 bits; if both DATA0 and DATA1 packets are included in the
search target, the string can be 16 bits. The search makes no assumptions as to bit alignment; the
specified string will match any such sequence in the specified type(s) of data packets. Data
values can be entered in hexadecimal (the default), or—by marking the checkbox, as illustrated
above—in binary.
None: Selecting this option is appropriate when trigger events are to be chosen only from among
Error Events, Static Events, and an External Event (i.e., no packet-type-specific event is
required). It displays the following panel in the dialog box:
4.4.1.1.4.2 Error Events
Any combination of bad PID value, bad CRC value, and bit stuffing errors can be detected and
used as a trigger event, by marking the appropriate checkboxes.