User Manual
Modular Multi-service Integrated Optical Transmission Multiplexer
25
5. Fault with Monitoring System
Effect
Cause
Diagnostic Method
The icons on the
monitoring interface
appears gray, and the
power indicator light
of simulative diagram
does not light on
The optical multiplexer
has not been connected
to the power supply
Or it is disconnected at
RS485
Measure the voltage or check
the communication line
The NM software
cannot fulfill functions
like loopback,
obstruction etc. to the
equipment.
The equipment is in
offline state
Or it’s set to hardware
control
Check the equipment or
reconfigure the equipment to
software control.