Fiber Optic Adapter Card - Allied Telesis AT-2400T Installation Manual

If the above troubleshooting guidelines do not resolve the problem, run
the diagnostics utility. For instructions, refer to
page 113.
Fiber Optic
Below are guidelines for troubleshooting an adapter card that has a fiber
Adapter Card
optic port.
Verify that the operating specifications of the port on the remote
Ethernet hub or switch (e.g., operating speed and duplex mode)
are compatible with the operating characteristics of the adapter
card. For example, you cannot connect the twisted pair port on an
AT-2400T adapter card, which has a fixed operating speed of 10
Mbps speed, to a port on an remote Ethernet switch that has a
fixed operating speed of 100 Mbps.
If you are using a AT-2450FTX, AT-2700FTX, AT-2701, or
AT-2745FX adapter card, only one port can be connected to the
network at a time.
Try connecting the twisted pair cable to a different port on the
remote Ethernet hub or switch.
Check that the fiber optic cable is securely connected to the port
on the adapter card and to the port on the remote Ethernet hub
or switch.
Verify that you are using the appropriate type of fiber optic
cabling.
Verify that the maximum operating distance for the fiber optic
port has not been exceeded.
Check that the operating specifications of the fiber optic port
(e.g., wavelength and maximum operating distance) are
compatible with the operating specifications of the fiber optic
port on the remote Ethernet hub or switch. For example, you
cannot connect the fiber optic port on an adapter card with an
operating wavelength of 1310 nanometers to a port on an
Ethernet switch with an operating wavelength of 1550
nanometers.
If the fiber optic port has a dual SC or ST connector, make sure that
adapter card's receiver port (RX) is connected to the end-node's
transmitter port (TX) and that the adapter card's transmitter port
(TX) is connected to the end-node's receiver port (RX).
Test the attentuation on the fiber optic cable to ensure that it
does not exceed acceptable values.
Network Adapter Card Installation Guide
Running Diagnostics on
111