Common Functions; Display Of Events On The Trace - Viavi 8100 V2 Series User Manual

Chapter 3 Reflectometry measurements
Results display
• On the upper right side, the alarm icon is displayed (if some alarm thresholds are
defined in the pre loaded configuration file or in the Setup screen in Expert OTDR
mode).
Table 4
Fail
Warning
Valid

Common functions

Display of events on the trace

Each event detected is referenced under the trace by a serial number. The reflectometry
trace is displayed with a dotted vertical line set on the start of launch cable
Launch Cable End parameter is defined in the S
The trace can also be displayed with a dotted vertical line on the end of fiber
The icon
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
page 31). Attenuation and reflectance results for an event will be displayed if they can
be calculated
68
Alarms display
Indicates that at least one result exceeds the alarm thresholds
defined in the configuration file used for acquisition
Results are displayed in red in table.
Results for minor alarm exceed the thresholds defined in Warning
mode.
Results are displayed in yellow in the table.
Indicates that all the results lie within the thresholds (no result is in
red or yellow).
Results are displayed in green in the table.
is displayed on trace if the Receive Cable Start parameter has been
ETUP
User Manual
ETUP
menu (see "Configuring the test in Expert OTDR" on
78000010220 Rev. 024
menu)
(if the
.