CopperOptics 150-1103-81, Manual

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150-412-181-01 March 31, 1998 Revision 01
HRU-412 List 8A PairGain Engineering - Plant Series 9
HDSL LEDs LP1 OK LED flashes green while HDSL Loop 1 is synchronizing with the
HLU. The LED lights green to indicate that loop 1 is properly synchronized
with the HLU.
LP1 MAR LED lights yellow when the HRU-412 List 8A margin on HDSL
loop 1 has dropped below the user-defined margin threshold value. This
indicator flashes yellow at a slow rate to indicate that a loss of sync word
(LOSW) exists in span 1, loop 1 of the HDSL pair between the HLU and the
doubler. This indicator flashes yellow at a rapid rate to indicate that a
LOSW problem exists in span 2, loop 1 of the HDSL pairs between the first
and second doublers.
LP1 ES LED flashes red every second that a CRC error is detected on loop
1 from the upstream module.
LP2 OK LED flashes green while HDSL Loop 1 is synchronizing with the
HLU. The LED lights green to indicate that loop 2 is properly synchronized
with the HLU.
LP2 MAR LED lights yellow when the HRU-412 List 8A margin on HDSL
loop 2 has dropped below the user-defined margin threshold value. This
indicator flashes yellow at a slow rate to indicate that a loss of sync word
(LOSW) exists in span 1, loop 2 of the HDSL pair between the HLU and the
doubler. This indicator flashes yellow at a rapid rate to indicate that a
LOSW problem exists in span 2, loop 2 of the HDSL pairs between the first
and second doublers.
LP2 ES LED flashes red every second that a CRC error is detected on
loop 2 from the upstream module.
RS-232
(Craft)
connector Provides a connection port for an ASCII terminal. The ASCII terminal
allows access to the maintenance, provisioning, and performance
monitoring menus and screens.
Card handle Pull on the card handle to remove the HRU-412 List 8A from the shelf slot.
WCN label Provides the warranty control number for the HRU-412 List 8A.
Table 2. HRU-412 List 8A Front Panel Components (Cont.)