PairGain T1L2F10A, Manual

Page: 41 / 76

150-231-185-05, Revision 05 Provisioning
HLU-231 List 8E September 13, 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 ( Figure 16 and Figure 17 on page 34 ) 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.
Table 11 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.
AIS, DS1-HLU First and last instance of AIS at the HLU DSX-1 input; Current condition, number of alarms.
(a)
(a) Requires the HLU-231 to be connected to an HRU-402 or HRU-411.
AIS, DS1-HRU First and last instance of AIS at the HRU DS1 input; Current condition, number of alarms.
(a)
BER First and last instance of a BER at the HRU; current condition, number of alarms.
Span n
(b)
LOSW, HDSL1
(b) Where n equals span number.
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.
*
8
6
&
4 5 6 7 8
(