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TESTING AND TROUBLESHOOTING
Transmit (XMT) LED
This green LED flashes to indicate that a data packet is
being transmitted onto the network by the device
connected to the transceiver. The flash of the LED is
pulse-stretched for viewing effect.
This LED stays off if the device is active, but not
transmitting traffic onto the network.
Signal Quality Error Test Function (SQE) LED
When lit, this yellow LED indicates the SQE test function is
enabled in the transceiver. When the LED is not lit, this
indicates that the SQE test is not enabled.
The SQE test is used to ensure that the collision presence
circuit and path are operational between the FOT-F3 and
the Ethernet device attached to the AUI port. This test is
generated by the transceiver after a data packet has been
transmitted through the transceiver.
Power (PWR) LED
When lit, this green LED indicates that the transceiver is
receiving power from the device connected to it.
If this LED is not lit, power is not being received from the
device or the DC-to-DC converter in the transceiver has
failed.