150-402-102-01, Revision 01
Using the Maintenance Terminal
HRU-402 List 2
July 27, 1998
39
Table 10.
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 BER (10
-7
or 10
-6
) threshold crossing. Current
condition number of alarm.
Span1 LOSW,
HDSL1
First and last instance of LOSW on HDSL1; Current condition, number
of alarms
Span1 LOSW,
HDSL2
First and last instance of LOSW on HDSL2; Current condition, number
of alarms
Span1 Margin L1
First and last instance of exceeded margin on Loop 1; Current
condition, number of alarms
Span1 Margin L2
First and last instance of exceeded margin on Loop 2; Current
condition, number of alarms
PWR Open
Power condition: Open or Closed
PWR SHRT
Power short condition
PWR GND
HDSL grounded conductor detected
Last Cleared: None
Last time Alarm History cleared
