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EtherHub 1500 System User’s Guide
Hardware Description 2-3
PWR/CPU
Color: Green
Label: PWR/CPU
Function: Power indicator
LED Activity Condition Indication
STEADY LIGHT ON Unit is receiving power, CPU is running,
and EH1502s Agent is in Master mode.
BLINKING LIGHT ON Unit is receiving power, CPU is running,
and EH1502s Agent is in Slave mode.
NO LIGHT OFF Power is disconnected; no power received.
Interhub
Color: Green
Label: Interhub
Function: Indicates a valid connection between hub and agent
LED Activity Condition Indication
BLINKING LIGHT ON Hub has a valid connection to the Agent through
the FlexBus 1500 port on the back plane.
NO LIGHT OFF Hub is in a stand-alone configuration. Or hub
does not have a valid connection to the network
system it monitors.
Isolated (EtherHub-16i
+
only)
Color: Green
Label: Isolated
Function: Indicates the hub is isolated from Ethernet segment
of the FlexBus 1500 backplane
LED Activity Condition Indication
STEADY LIGHT ON Hub is isolated from all segments.
NO LIGHT OFF Hub is attached to one of the 3 segments of
the FlexBus 1500.