Allied Telesis AT-MC1008/SP - Manual (Page 52)

Chapter 3: Troubleshooting
52
If the LINK LED for the fiber optic port is OFF, do the following:
ˆ Verify that the end-node connected to the port is ON and is operating
properly.
ˆ Check that the fiber optic cable is securely connected to the fiber
optic port on the media converter and on the end-node.
ˆ Check to be sure that the end-node connected to the port is operating
at 1000 Mbps.
ˆ Check to be sure that the end-nodes connected to the media
converter are operating in the full duplex mode.
ˆ For the AT-MC1008/GB model converter, make sure that the cable
connected to the converter‘s receiver port (RX) is connected to the
end-node’s transmitter port (TX) and that the AT-MC1008/GB’s
transmitter port (TX) is connected to the end-node’s receiver port
(RX).
ˆ Test the attenuation on the fiber cable to ensure that it does not
exceed acceptable values.
ˆ Verify that you are using the appropriate type of fiber optic cables and
that you have not exceeded the maximum operating distances.
ˆ Check that the operating specifications of the fiber optic port on the
end-node are compatible with the operating specifications of the fiber
optic port on the converter.
If you are still experiencing problems after testing and troubleshooting the
installation, contact Allied Telesyn Technical Support for assistance.
Refer to “Contacting Allied Telesyn” on page 12 or visit our web site at
www.alliedtelesyn.com for support information.