Operations Manual

Feature Overview
38 GHz Fast Ethernet Operations (9/17/99) - R0.1 2-9
CONFIDENTIAL & PROPRIETARY
D
O
N
O
T
C
O
P
Y
n Displays the modem lock status on the WorkSpace window
Alarms
The operator can program the system to automatically send an e-mail message
to a programmable valid destination when the status of an IFU status changes
to not reporting (NREP), alarmed, or when the alarm clears.
Table 2-1 lists the alarms that can display in IFU Link Manager and identifies
possible problem areas that may have caused each alarm. You also can view
the list of alarms on the Discrete tab of the Alarms window.
NOTE: Critical severity indicates that the IFU cannot be used; major
severity indicates that the IFU may still be functioning.
Table 2-1. Alarms
Alarm
Default
Severity
Affected
Subassembly
Description
E
XCITER UNLOCK Critical Exciter and/or
Reference Oscillator
Exciter reports loss-of-lock condition,
which means that the IFU lost its ability
to transmit valid payload and OAM&P
data across the RF link.
LOL SONET
C
LOCK
Critical Modem and/or NIC The modem cannot identify a locked
SONET clock (loss of lock) from the data
received from the modem. Therefore, any
data received via the RF link is no longer
valid.
NOTE: This alarm displays only on the
Discrete tab of the Alarms window.
M
ODEM UNLOCK Critical Modem The demodulation functional components
of the modem have lost lock to the
incoming signal. The data received
through the RF link is not valid.
NOTE: This condition can be due to a
heavy rain interruption, in which case it
will correct itself when the rain subsides.
P
AYLOAD OFFLINE Critical Modem and/or NIC IFU stopped transmitting and transporting
payload data because it is receiving too
many errors for the modem to correct.
P
OWER TX RAIL Critical Power Supply Unit Power supply to the transmitter failed.
The IFU is not transmitting data across
the RF link to its paired IFU.