ADTRAN 1200664L1, Manual

Page: 28 / 38

Chapter 3. Troubleshooting and Maintenance
28 OCU 45 User Manual 61200664L1-1B
3. Alternately, an
E
LECTRIC
A
LARM
could indicate that all 1s are being
received on the electrical interface indicating an AIS alarm being
transmitted from the DS3/STS-1 device.
Optical LOS
C
ondition: O
PTICAL
L
OS
LED is illuminated.
1. Verify that the fiber is fully seated in the optical connector interface of
the OCU 45 unit.
Optical Alarm
C
ondition: O
PTICAL
A
LARM
LED is illuminated.
1. Line coding violations are being received from the far end OCU 45.
2. Alternately, an Optical Alarm can indicate that all 1s are being received
on the optical interface from the far end device.
3. Verify that the far end OCU 45 is functioning properly.
Alarm Relay Conditions
Condition: A
LARM
R
ELAYS
are indicating an active alarm.
1. The unit is currently experiencing an
O
PTICAL
or
E
LECTRICAL
L
OS
.
2. The electrical interface transmit is currently not transmitting data.
3. The electrical interface setting is not configured properly (i.e., the
interface setting and the data being received are different data rates).