beautypg.com

Merged event – EXFO FTB-7000 OTDR for FTB-200 v2 User Manual

Page 320

background image

Description of Event Types

306

FTB-7000 Series

Merged Event

Merged Event

This symbol denotes an event combined with one or more other events. It
also indicates the total loss produced by the merged events following it in
the events table.

³

A Merged Event is composed of subevents. Only the Merged Event is
displayed in the events table, not the subevents composing it.

³

Reflective events may indicate the presence of connectors, mechanical
splices, or poor-quality fusion splices or cracks.

³

Non-reflective events may indicate the presence of splices, splitters or
bendings.

³

A reflectance value is specified for all merged events and indicates the
maximum reflectance for the merged event. A reflectance value is also
displayed for each reflective subevent composing the Merged Event.

Reflective events

Point A

Point B

Merged Reflective event position

Total loss (

Δ

dB)

Reflected power
(dB)

Distance
(km)