B&B Electronics 856-15711--36 - Manual - Manual (Page 6)

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iMcV-MediaLinX
FX LinkLoss, TX LinkLoss, Link Fault Pass-Through, FiberAlert and Far
End Fault
iMcV-MediaLinX modules include the troubleshooting features such as TXLL, FXLL,
LFPT, FA and FEF that help locate silent failures on a network. Before attempting to
install the module(s), understand how these features work and react to a specific
network configuration. The features offered are based on the board revision; refer to
the DIP Switch Configuration Table.
Link Integrity
During normal operation, link integrity pulses are transmitted by all point-to-point
Ethernet devices. When an IMC Networks media converter receives valid link pulses,
it knows that the device to which it is connected is up and sending pulses, and that
the copper or fiber cable coming from that device is intact. The appropriate “LNK”
(link) LED is lit to indicate this.
The IMC Networks media converter also sends out link pulses from its copper and
fiber transmitters, but normally has no way of knowing whether the cable to the other
device is intact and the link pulses are reaching the other end. The combination of