Allied Telesis AT-EX1001SC/GM1 - Manual (Page 15)

AT-EX1001SC/GM1 Installation Guide
5
Port and System LEDs
The front panel has several LEDs that display the status of the ports and the
unit. Table 1 describes the functions of the LEDs.
Note
A valid port link is indicated only when both the SD and the PLL LOCK
LEDs are ON.
Table 1 AT-EX1001SC/GM1 LED Indicators
LED Description State Indicates
System LEDs
PWR/
NMS Power Green Extender is powered up and ready for
use.
LP/BACK Loop Back N/A Not implemented.
Port LEDs
SD Signal Detect Green Signal is present on this port.
PLL
LOCK Phase Lock
Loop Lock Green Phase Lock Loop is locked on this
port.