EXFO AXS-100 Series OTDR - Manual (Page 122)

Troubleshooting
114 AXS-100 Series
Solving Common Problems
The application displays a
message indicating that a
“live fiber error” occurred.
Light has been detected on
the OTDR port during the
acquisition or while you
were monitoring a fiber in
real-time mode.
Disconnect the fiber from the
OTDR port. Press OK to close
the message.
Start another acquisition
without any fiber connected
to the OTDR. The message
about live fiber error should
not appear and the OTDR
trace should look “normal”.
If you still see the message
about live fiber error even if
no fiber is connected to the
OTDR, contact EXFO.
Never connect a live fiber to
the OTDR port without a
proper setup. Any incoming
optical power ranging from
-65 dBm to -40 dBm will affect
the OTDR acquisition. The
way the acquisition will be
affected depends on the
selected pulse width. Any
incoming signal greater than
-20 dBm could damage your
OTDR permanently. For
live-fiber testing, refer to the
SM Live port specifications for
the characteristics of the
built-in filter.
Problem Possible Cause Solution