Exfo FTB-7000 OTDR for FTB-200 v2 Instrukcja Użytkownika Pobierz pdf (Strona 234)

100

101

Analyzing Traces with the Bidirectional Analysis Application

220 FTB-7000 Series

Modifying the Alignment of Unidirectional Traces

4. Press Set as Span Start or Set as Span End to set the span start or

span end marker on the appropriate event in the trace display.

Changes to the span start and span end will modify the contents of the

events table. For the A->B trace, the span start becomes event 1 and its

distance reference becomes 0. For the A->B trace, the span end becomes

the last event and its distance reference becomes 0.

Only events between the span start and span end will be numbered in the

trace display and events table.The cumulative loss is calculated within the

defined fiber span only.

IMPORTANT

To keep a set fiber span during trace reanalysis, activate the

corresponding option (see Saving the Span-Start and Span-End

Information on page 246). Otherwise, the span start and span end

markers are reset to zero in the process.

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