Alarms - ADC HiGain HLU-200 List 2D User Manual

Managing the HLU-200

Alarms

The AHDSL alarms listed in
"Alarm" signal from the HLU microprocessor to the Litespan processor as shown in
cause the HDSL LED to flash red.
To retrieve the alarm status of a CBA, click on the red CRITICAL alarm key located at the lower right hand corner
of the CBA screen shown in
is listed in the CONDTYPE column. These are related to the standard AHDSL alarms listed in
CONDTYPE Alarm
LOSW
LOS
ESTH
SNRL
DCCONT POWER
26
Table 8 are detected and reported to the Litespan microprocessor through the
Figure 9 on page 15. The alarm screen shown in
Figure 23. AHDSL Alarm Screen
Table 8. HLU-200 List 2D Alarms to Litespan Processor
Description
LOSW Either of the HDSL loops lost sync
RLOS Loss of HRU DS1 input signal
TLOS A user option that causes the loss of the HRU DS1 input from the CI to initiate a
logic loopback state in the HRU.
H1ES HDSL loop 1 has exceeded the 24-hour user-selected Errored Seconds CRC
threshold.
H2ES HDSL loop 2 has exceeded the 24-hour user-selected Errored Seconds CRC
threshold.
DS-1 The total number of bipolar violations (BPV), at the HRU DS1 input, has exceeded
the 24-hour user-selected threshold.
MAL1 The margin on HDSL loop 1 has dropped below the minimum threshold value set
at the maintenance terminal Margin Alarm Threshold option.
MAL2 The margin on HDSL loop 2 has dropped below the minimum threshold value set
at the maintenance terminal Margin Alarm Threshold option.
The HLU-200 has detected an open circuit in one of the two HDSL loops causing
FEED a DC continuity DCCONT alarm.
OPEN
February 10, 1999
150-200-124-02, Issue 2
Figure 3 on page 6. They also
Figure 23 appears. The alarm type
Table 8 on page
HLU-200 List 2D
26.