EXFO MAX-700 - Manual (Page 128)

Analyzing Traces and Events
116 MAX-700
Events Tab
For each item listed in the events table, information is displayed:

Type: Various symbols are used to describe different event types. For a
more detailed description of symbols, see Description of Event Types
on page 341.

Number: Event number (a sequential number assigned by the OTDR
test application) or, in parentheses, the length of a fiber section (the
distance between two events).

Loc.: Location; that is, distance between the OTDR and the measured
event or between the event and the beginning of the fiber span.

Loss: Loss in dB for each event or fiber section (calculated by the
application).

Refl.: Reflectance measured at each reflective event along the fiber.

Att.: Attenuation (loss/distance) measured for each fiber section.
Note: The attenuation value is always presented in dB per kilometers even if the
distance units you selected are not the kilometers. This follows the
standards of the fiber-optic industry that provides the attenuation values in
dB per kilometers.

Cumul.: Cumulative loss from the trace span start to span end; the
running total is provided at the end of each event and fiber section.
Cumulative loss is calculated for the events displayed in the events
table, excluding those that are hidden. For a more accurate link loss
value, refer to the loss measurement displayed in the Trace Info. tab.
If you want to modify events or fiber sections, see Modifying Events on
page 140, Inserting Events on page 144, and Changing the Attenuation
of Fiber Sections on page 150.