Instruction Manual

Troubleshooting
MAX-700 321
Solving Common Problems
OTDR-Related Problems
Unit switches to standby
mode unexpectedly.
Power schemes are
not defined correctly.
Select one of the predefined power
schemes. For more information, see
the Configuring the Power
Management Options section.
Unit is not responding. Restore your unit.
Problem Cause Solution
The application displays
a message indicating
that a “Non-resolved
fiber end” event has
been found.
The fiber under test is
too long.
Ensure that the fiber under test is
shorter than the maximum length the
OTDR can measure.
In multimode fiber
testing, launch level
remains out of the
launch window (light
green rectangle) even
after cleaning and
verifying connection.
Wrong fiber type
selected.
 If you are testing C fiber, from the
Auto or Advanced main window,
select MM 50 μm.
 If you are testing D fiber, from the
Auto or Advanced main window,
select MM 62.5 μm.
Problem Cause Solution