11
Power-On
When power is applied, the RTU performs self-diagnostics and the PWR LED is on.
During the power-on self-test, all of the LEDs turn on for one second.
TST
DSL
DTR
ALM
PWR
TM
97-15611
Power – green
Alarm – red
Test – yellow
Digital Subscriber Line – green
Data Terminal Ready – green
5546
Refer to
Troubleshooting, page 14, for LED indications requiring action.
Status LEDs
After a successful self-test, the LEDs should appear as indicated in BOLD in the
Condition column below.
LED
Condition
Status
PWR
ON
RTU has power.
ALM
OFF
No active alarms.
TST
OFF
No active tests.
DSL
ON
The DSL link is now active and ready to transmit and
receive data.
DTR
ON
The Data Terminal Ready connection to the DTE data
interface is active.
