Troubleshooting - IMC Networks iMcV-DS3/E3/STS-LineTerm Operation Manual

Troubleshooting

General Troubleshooting
• The Coax Port can easily be tested using the internal PRBS signal generator and
detector and a physical wire loop on the coax interface.
• The Fiber Port is internally tested at all times by a working pair of units. With one
unit configured for Local Management (Switch 10 set OFF) and the other for
Remote Management (Switch 10 set ON), the fiber line is verified if the "RM" LED
is ON at both ends of the fiber line. Under normal operation only the "RM" LED
is ON at both HOST and REMOTE.
• To test a media converter by itself, first make sure you have an appropriate fiber
patch cable, then follow these steps to test:
1. Connect the media converter to the BNC device with a coax cable.
2. Loop a single strand of fiber from the transmit port to the receive port of your
media converter.
3. Verify that you have a valid connection for both the BNC and fiber ports on
your media converter. (No "ER" or "LOS" LED ON)
• If there is trouble with link connectivity, verify your cable connection and DIP
Switch setting are correct.
• Use the following LED indications to identify the fault location:
*DIP Switch 4 must be set to ON for Fault Loopback to operate as illustrated above.
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