CITYLIGHT 10/100 ETHERNET TRANSCEIVER CARD
21
4. DIAGNOSTIC LEDs
LED
COLOR
CONDITION
100
GREEN/YELLOW
THIS INDICATES THAT POWER IS SUPPLIED TO THE
DEVICE AND ADDITIONALLY THE OPERATING DATA
RATE; YELLOW FOR 10 Mbps OR GREEN FOR
100 Mbps.
WHEN AUTO-NEGOTIATION IS ENABLED, CHECK THAT
THE LEDS AT BOTH ENDS OF THE LINK INDICATE THAT
THE CARDS ARE OPERATING AT THE SAME SPEED.
IF THIS LED IS NOT LIT, CHECK THAT POWER IS
CORRECTLY SUPPLIED TO THE CHASSIS AND THAT
THE CARD IS FULLY INSERTED INTO THE CHASSIS.
LINK
GREEN
THIS INDICATES THAT THE INTEGRITY OF THE COPPER
LINK IS GOOD.
IF THIS LED IS NOT LIT, IT MAY BE BECAUSE THE
COPPER LINK IS NOT INSERTED.
THE CORRECT CABLE TYPE IS NOT BEING USED. THE
SUPPLIED CROSSOVER IS REQUIRED TO CONNECT TO
A DTE (STATION/SWITCH TYPE DEVICE).
LINK LOSS FORWARDING IS ENABLED AND THE FIBER
LINK IS INACTIVE. (CHECK THE STATE OF THE ALARM
LED).
DATA
GREEN
THIS INDICATES THAT RECEIVE ACTIVITY IS PRESENT
ON THE COPPER PORT. THE SIGNAL THAT DRIVES THE
LED IS STRETCHED TO MAKE SURE THAT A SINGLE
ACTIVITY EVENT IS SEEN. IF THE ACTIVITY IS
CONTINUOUS, THE LED APPEARS PERMANENTLY
ILLUMINATED.
