150-231-181-01, Revision 01
Provisioning
HLU-231 List 8A
September 7, 1999
33
View Alarm History Screen
Press
at the Maintenance Terminal Main Menu to open the Alarm History screen. This screen allows you to
view alarms that are currently active. In the Alarm History screen (
) the:
•
First and Last columns contain the time and date stamp of the first and last occurrence of each alarm.
•
Current column shows the status of each alarm.
•
Count column lists the number of times each alarm occurred. (The maximum non-overflowing count is 999.)
From each Alarm History screen you can do the following:
•
Press
to update the screen.
•
Press
to view another span (for doubler applications).
•
Press
to clear all data from the screen.
•
Press
, , , ,
or
to select a specific span (for doubler applications).
•
Press
to exit from the Alarm History screen.
lists the Alarm History fields and descriptions. These descriptions apply to the Alarm History for doubler
applications as well.
Table 11.
Alarm History Fields and Descriptions
Field
Description
Type
Identifies the type of alarm
LOS, DS1-HLU
First and last instance of LOS at the HLU; current condition, number of alarms
LOS, DS1-HRU
First and last instance of LOS at the HRU; current condition, number of alarms
BER
First and last instance of a BER at the HRU; current condition, number of alarms
Span n LOSW, HDSL1
First and last instance of LOSW on HDSL1; current condition, number of alarms
Span n LOSW, HDSL2
First and last instance of LOSW on HDSL2; current condition, number of alarms
Span n Margin L1
First and last instance when margin dropped below the established threshold on Loop 1; current
condition, number of alarms
Span n Margin L2
First and last instance when margin dropped below the established threshold on Loop 2; current
condition, number of alarms
PWR-SHRT
Power short condition; current condition, number of alarms
PWR-GND
Power ground condition; current condition, number of alarms
Last Cleared:
Last time Alarm History cleared
G
U
S
C
1
2
3
4
5
E
