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Chapter 5 List of Alarms
Troubleshooting / Alarms Causes
Troubleshooting / Alarms Causes
Cause
Back To Normal Alarm
Persistence Alarm
Injection Alarm
Reflectance Alarm
Fiber Cut
Transitory Alarm
Non Reflective Alarm
Beyond Level Alarm
Raman Power Detec-
tion Alarm
Low Level Raman
Power Alarm
Raman Incoherent
Acquisition Alarm
Unknown Anomaly
File Alarm
Local Mode Alarm
Monitoring Sequencer
Alarm
Hard Drive Free Space
Alarm
Module Temperature
Alarm
80
Display
No fault detected
Unchanged status
Injection level
Connector or patch cord
Fiber Cut
Transitory
Fiber stress (bending,
splice degradation, etc.)
Beyond Level
Raman compensation -
Optical Power Detection
Raman compensation -
Low Optical Power
Raman compensation -
detection and localization
OTDR traces are different
No fault detected
Corrupted File
Local Mode
Monitoring Sequencer is
off
Hard Drive Space short-
age
Temperature is too high
User Manual
7OTU80010/06
Comment
This alarm appears after a fault has been
detected, when the last test do not detect any
threshold exceeding. None threshold is
exceeded.
This alarm appears during a test on demand,
when severity did not change.
The injection level at the OTDR output is not
sufficient.
The default has been detected near a
Fresnel type of event.
An end of fiber is detected before the end of
fiber of the reference trace.
A threshold exceeding detected on the detec-
tion trace has not been detected onto the
location trace.
The default has been located outside of the
Fresnel.
Traffic has been detected on fiber whereas
the reference traces have been made without
Raman compensation.
No traffic detected on fiber whereas the refer-
ence traces have been made with the Raman
compensation.
The Raman compensation has been used on
one single reference trace.
This alarm is displayed during a test on
demand, when no threshold exceeding has
been detected.
One file is missing or corrupted
OTU-8000
has passed to local mode (DHCP)
The monitoring sequencer is stopped.
There is not enough space available on the
harddisk
OTU-8000
The
or module's temperature is too
high.
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