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Chapter 16, Xgig TraceView Template Editor
Figure 172: Template Editor Decode Switches Example
If you use this template as a simple trigger condition in TraceControl, chances are that it will
trigger on another SCSI Data frame that isn't a SCSI Inquiry Data frame, but has the first 3-bits in
the payload set to 0x1. This "false match" to a value within a non-SCSI Inquiry Data frame
happens because the switches are only used to set up the bit pattern for filter/trigger in
TraceControl and TraceView. Decode Switches are not used to determine which type of frame to
compare to.
The Decodes Switches in the Template Editor can be a critical tool for selecting the proper bit
pattern; however, do not mistake this for an absolute method of selecting only those frames that
have a particular decode switch value. There are numerous ways to narrow your search/filter
further using templates and other capabilities of Xgig Analyzer software. For example, if you have
some idea of the traffic pattern, you might be able to specify enough template bits to allow
triggering on exactly the desired frame. As another example, you could use a 2-level trigger
condition in TraceControl, for example,
condition when armed
378
Arm on arm condition. Stop capture after trigger
(two-level trigger). The Arm condition can be set to the command frame,
Using Template Editor
Xgig Analyzer User's Guide