Specifications

4000326 Rev A Optical Amplifiers 4-15
Troubleshoot Alarm Conditions,
Continued
Alarm Condition Possible Causes Possible Solutions
Fiber path is broken
with bends or bad
path.
• Check optical cable for breaks
or bends tighter than the fiber
specification, and correct the
situation.
• Clean fiber connections. For
instructions, refer to Fiber
Optic Connector Cleaning
Procedure later in this section.
Power failure.
Ensure that all AC power is present
and all power connections are
secure.
Optical power is
low or off
Laser current at
maximum.
Verify that the input signal is
present and the front panel reading
is accurate.
For help, telephone the Scientific-
Atlanta assistance center in your
area.