EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 255)

Analyzing Bidirectional Traces
OTDR 241
Analyzing Bidirectional Traces
The bidirectional event table lists all the events detected on the fiber.
3. When the bidirectional analysis of the first wavelength is complete, you
can save the analysis as a single trace.
For information about saving traces, see Saving Traces on page 248.
4. If you want to create a bidirectional trace at an other wavelength,
repeat the previous procedure.
Event type detected
(see Description of Event Types on page 293)
Event number or span length (distance between two events)
Distance from the span start to the specified event
Attenuation (loss/distance) of individual fiber section
Average of the loss measured
between A->B and B-> A traces
(most important information)
Cumulative loss calculated from span start to
specified event.
Includes loss of each event of the span.
Current loss in dB