EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 184)

Analyzing Traces and Events
170 OTDR
Analyzing or Reanalyzing a Trace
Analyzing or Reanalyzing a Trace
Note: This function is available in Advanced mode only.
You can analyze a displayed trace at any time. Analyzing or reanalyzing a
trace will:
³
produce an events table for a trace, if there was none (for example, the
Analyze After Acquisition feature was not selected; see Enabling or
Disabling Analysis After Acquisition on page 76).
³
reanalyze a trace acquired with a previous version of the software.
³
update the events table of a trace, if you acquired that trace with an
older version of the OTDR application.
³
re-create the events table if it was modified.
³
reset the span start to zero and the span end to end-of-fiber, unless you
have saved them (see Saving the Span-Start and Span-End Information
on page 465).
³
perform a Pass/Fail test, if enabled (for more information, see Setting
Pass/Fail Thresholds on page 78).
When you reanalyze a trace acquired in Template mode:
³
Events copied from the reference trace (identified by “*”) will be lost.
³
The application will assign a number to the events that were identified
by question marks.
If you prefer to focus your analysis on a specific fiber span, see Analyzing
the Fiber on a Specific Fiber Span on page 172.