EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 258)

Analyzing Bidirectional Traces
244 OTDR
Viewing and Modifying Current Trace Parameters
To view trace parameters:
Press the Bidir. Info, A->B Info or B->A Info button.
The following parameters are displayed:
³
Pulse: Pulse width used to perform the acquisition.
³
Length: Measured length of the total fiber span between span start and
span end.
³
Span Loss: Total measured loss of the fiber calculated either between
the span start and the span end, or on the total fiber span, depending
on the settings you have chosen in the setup window.
³
Avg. Loss: Average loss of the total fiber span as a function of distance.
³
Avg. Splice Loss: Average of all non-reflective events between span
start and span end.
³
Max. Splice Loss: Maximum value of all non-reflective events between
span start and span end.
These parameters are also displayed for the bidirectional trace:
³
Default Tolerance: Default tolerance applied for matching events from
A->B and B->A traces in the resulting bidirectional trace.
³
Tolerance: Tolerance interval value used in the bidirectional trace file
that can be modified by user to eliminate mismatched events.
Edit Tolerance or Edit
Current Trace Settings
(A->B Info and
B -> A Info) button Trace information Event tolerance (Bidir. Info
pane) or trace settings
information