WC-SERIAL USER MANUAL
76-02-103 Rev.C
Page 11 of 17
2.1.6 Serial LED’s
The Serial interface has two status LED’s as described below
2.1.6.1 Transmit (TX) LED
The transmit LED is set to pulse on for 100mS whenever a packet is transmitted on
the serial interface. With a very low packet rate, the LED may flash, but with normal
traffic conditions the TX LED will be on all the time. If no traffic is passing the LED
will be off.
2.1.6.2 Receive (RX) LED
The Receive LED is set to pulse on for 100mS whenever a packet is transmitted on
the serial interface. With a very low packet rate, the LED may flash, but with normal
traffic conditions the RX LED will be on all the time. If no traffic is passing the LED
will be off.
2.1.7 Power (PWR) LED
The Power LED is GREEN ON to indicate that the unit is powered up.
2.1.8 Unit Status (OK) LED
The OK LED is a bicolour LED with the following states
OFF
Unit not powered up
RED ON
The Serial WAN port has alarms
RED FLASH
Both the Serial WAN and User LAN Ports have alarms
YELLOW ON
Serial WAN Sync Alarm
YELLOW FLASH Link Loss Forwarding Alarm
GREEN FLASH
The User LAN Port has alarms
GREEN ON
No Alarms present.
The OK LED, gives an indication of the status of the device, and if it is not displaying
GREEN ON, i.e. normal operation, the user should use the status to diagnose the
problem.
