EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 157)

Analyzing Traces and Events
OTDR 143
Customizing the Event Table
³
Launch level: In the events table, the Launch Level event is
represented by the
icon. In the Att. column, the injection level
value for that event is identified by the @ symbol.
You can hide the injection level value and symbol from the
Att. column, but not the
icon.
³
Including span start and span end: When applicable, the application
will include the losses caused by the span start and span end events to
the span ORL and span loss values.
If you activated the pass/fail test (see Setting Pass/Fail Thresholds on
page 78), span-start and span-end events will be taken into account
when determining the status (pass/fail) of connector loss and
reflectance.
If you want to record the span-start and span-end points of the current
trace so that the application can apply them after reanalysis, see
Saving the Span-Start and Span-End Information on page 465.