User's Manual

UTT Technologies Chapter 2 Hardware Installation
UTT Technologies http://www.uttglobal.com Page 29
power status, operational status and failures of the U2000, see Table 2-3 for detailed
description.
Ɣ The second group includes the twelve port LEDs on the right six columns, which
indicate the status of each port, see Table 2-4 for detailed description. Each port has
two LEDs, LEDs 1 through 4 are corresponding to LAN1 through LAN4 respectively,
and LEDs 5 through 6 are corresponding to WAN1 through WAN2 respectively.
Figure 2-5 LEDs on the U2000
LEDs Status During Startup Status During Operating
SYS
One second after powering up,
the LED flashes fast for one
second, and then extinguishes
for two seconds, lastly flashes
twice per second.
The LED flashes twice per second when the
system is operating properly, and it will flash
slower if the system is under heavy load.
The LED will extinguish or light steady if a fault
occurred in the Device.
PWR
The LED lights during startup.
The LED lights steady when the power is being
supplied to the Device.
TRF
The LED lights during startup.
The LED flashes when the Device is sending or
receiving data.
The LED will extinguish if there is no network traffic
on the Device.
FLT
The LED lights during startup.
The LED extinguishes when the Device is
operating properly.
The LED will flash if a fault occurred in the Device.
And the Device will restart automatically after a
certain number of flashes.
Table 2-3 Description of the System LEDs on the U2000