EXFO MAX-700 - Manual (Page 354)

Description of Event Types
342 MAX-700
Span Start
Span Start
The Span Start of a trace is the event that marks the beginning of the fiber
span. By default, the Span Start is placed on the first event of a tested fiber
(typically the first connector of the OTDR itself).
You can make another event the start of the span you want to focus your
analysis on. This will set the beginning of the events table at a specific
event along the trace.
Span End
The Span End of a trace is the event that marks the end of the fiber span. By
default, the Span End is placed on the last event of a tested fiber, and is
called the end-of-fiber event.
You can also make another event the end of the span you want to focus
your analysis on. This will set the end of the events table at a specific event
along the trace.
Short Fibers
You can test short fibers with the application. You can even define a fiber
span for short fibers by placing the span start and the span end on the same
event.