User`s manual

ANCB LEDs Description and Operation, Continued
The Green TX LED blinks whenever a message is transmitted on the
Ethernet channel. The Green RX LED blinks whenever a message is
received on the Ethernet channel. The Red CL LED indicates there was
a collision on the Ethernet. Note: collisions are a normal occurrence on
an Ethernet network. The Red JB LED indicates that the Ethernet
controller has determined that the transmitter has remained on for longer
than allowed and indicates a possible hardware problem.
Ethernet Controller -
The bi-colored LED’s marked CL, BNC, and TP are used as indicators
for the Ethernet HUB. The HUB provides the 10BaseT and 10Base2
ports. The LED’s indicate the following information.
10BaseT / 10Base2
Ethernet HUB -
Steady Green indicates a FIFO error
Steady Red indicates a Collision on the HUB ports
CL
(Receiving on one port while transmitting another)
Blinking Red indicates a packet is being transmitted.
Blinking Green indicates a packet is being received.
Alternating Red/Green indicates the 10Base2 port is
Partitioned Out (Disabled).
BNC
10Base
T Port
Steady Green indicates the 10BaseT port is receiving the Link
Integrity Pulse (Keep Alive signal)
Blinking Red indicates a packet is being transmitted.
Blinking Green indicates a packet is being received.
Steady Red indicates the Polarity is reversed on the 10BaseT
port.
Alternating Red/Green indicates the 10BaseT port is
Partitioned Out (Disabled).
TP
10Base
T Port
52 • Troubleshooting 2000590-001