13
Figure 3-7 Event list
Serial number: "2/2" indicates that there are a total of two events on the trace, and the
information about the second event is currently displayed.
Position: It indicates the distance from the start point of the optical fiber to the event.
Reflection: It indicates the reflection strength of the reflection event.
Insertion loss: It indicates the size of insertion loss of the event.
Attenuation coefficient: It indicates the attenuation characteristics of the fiber section
between the previous event point and the current event point.
Accumulative loss: It indicates the loss of the optical fiber from the start point of the
optical fiber to the event point.
3.5.2.3
Information about the A/B Marker
A marker is used to identify and analyze a single event, trace section, and distance.
The marker information includes the distance, loss between two markers, and attenuation
coefficient between two markers, as shown in Figure 3-8.
Figure 3-8 Information about the A/B marker
The following parameters are measured between markers A and B. When any marker is
changed, the recorded values will change accordingly.
A-B: It indicates the distance between markers A and B.
A-B loss: It indicates the loss between markers A and B and identifies the power
difference in the vertical direction of markers A and B.
A-B attenuation: It is the attenuation coefficient of the optical fiber between markers
A and B.
