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Universal Chassis System
6002/6003/6004 WWDM Users Manual
5-1
Chapter 5
Troubleshooting and Maintenance
5.1 Troubleshooting Fiber Optic Cables
All optical cables should be connected using a Tx to Rx, or Rx to Tx orientation for correct MUX
and DEMUX signal operation. Proper labeling of each connecting cable is highly recommended.
5.2 Troubleshooting Guide
The 6002/3/4 models are passive, unidirectional WWDMs. The modules provide simultaneous
transmission of two to four optical signals over a composite SMF pair. Keeping all optical
pathways clean and dust free is imperative for trouble-free operation. Refer to Table 1.
Table 1. Troubleshooting Cause and Solution Chart
Symptom Possible causes Solution
1. Dirty fiber optic cable 1. Clean all fiber optic cables in the
circuit
2. Bad connection to
equipment
2. Replace fiber optic cable
connection
3. Optical loss budget has
been exceeded
3. Check loss budget of equipment
being installed
4. Fiber optic cable cut 4. Check the condition and
integrity of all fiber optic cables
in the circuit. Immediately
replace or repair cut fiber optic
cable.
5. Fiber optic cables crossed 5. Reconfigure the link using the
Rx to Tx orientation
Local or remote
equipment is not
receiving optical
signal
6. Local or remote equipment
not transmitting sufficient
optical signal
6. Measure the optical transmit
power of equipment using an
optical power meter. Determine
that the equipment is providing a
sufficient optical signal.