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Chapter 5: Operation
Page 16 724-746-5500 | blackbox.com LMC5022C-R3
5. Operation
5.1 LED Operation
Each L2 module features diagnostic LEDs that provide information on features
and ports.
Upgrade LED Stacks
Upper Function State
FEF
Fiber Far End Fault ON Green
TXLL
TX LinkLoss/Blink if Active ON Green
LNK
FiberLink is valid/Flash on Activity ON Green
DIS
Software Disabled TX Port On Yellow
Upper Function State
FA
FiberAlert enabled/Blink Active ON Green
FXLL
FX LinkLoss/Blink if Active ON Green
LNK
FX LinkLoss is valid/Flash on Activity ON Green
DIS
Software Disabled fiber port
(via iView²)
On Yellow