Chapter 3
Launching a reflectometry test and displaying results
Results display
User Manual
700MAN201 Rev. 002
55
The trace can also be displayed with a dotted vertical line on the end of fiber
.
The icon
is displayed on trace if the
Receive Cable Start
parameter has been
defined in the Setup menu.
The results of the measurements of attenuation, reflectance and slope can be marked
on the trace.
The reflectance of a ghost event is displayed in brackets on the trace.
Criteria for display of an event
An event will be displayed if its attenuation or its reflectance exceeds the corresponding
threshold selected in the
S
ETUP
menu (see
"Configuring the test in Expert OTDR" page
). Attenuation and reflectance results for an event will be displayed if they can be
calculated
The reflectance of an event is always measured except when the event causes a satu-
rated Fresnel peak or if it is drowned out by noise. In this case, the equipment
displays
>
to show that the actual reflectance exceeds the value displayed.
Results table
Under the trace is displayed the results table with all the events detected during acqui-
sition.
The line corresponding to the event nearest to the cursor is highlighted in purple. This
highlighting moves if the cursor is moved.
To reduce or enlarge the size of the results table, click and maintain the bar between
trace and table and move downward or upward.
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