
PCM30U, PCM30U-OCH – User's, Operating and Maintenance Manual
E.1.9 LED indication
E.1.9.1 LED - PWA variant
PBS
ERR - Urgent alarm
Red
•
Transmission
protocol error
•
Identification error
•
Opposite PBS error
(duplex mode)
Red –
flashing
quickly
•
Invalid
configuration
Red –
flashing
slowly
•
Not specified
TEST
Orange
•
Test in
progress
Orange -
flashing
•
Test error
PWR
Green
•
Operational
state
Dark
•
No power or
“out of order!
LM – GREEN
Activity at LM interface
1, 2
Green Line
interfaces
in
operational state
Yellow
•
High BER, slip at
line interface 1,2
Yellow -
flashing
•
Loop at line
interface 1,2
•
Laser
permanently ON
Red Loss
of
signal
IN
Orange
•
Input command
active
Orange
and test
•
Command being
tested
Orange –
flashing
and TEST
•
Test error at this
command
OUT
Orange
•
Output command
active
Orange
and test
•
Command being
tested
Orange –
flashing
and TEST
•
Test error at this
command
E2 – other alarms
Red
•
Single bit error (light
prolonged to 100 ms)
•
-48 V DC for relays
and bias source below
threshold
•
Opposite PBS error
(simplex mode)
Yellow
flashing
Service alarm
•
Data signal loop
detected
Green Not
specified
Power Channel Modules
E-21
446S037.914.14N00