User's Manual

Release 15 Alarm List – continued
JAN 2002
B-5
SC300 1X BTS Hardware Installation, ATP, and FRU Procedures
DRAFT
Table B-1: List of Alarms (Software Release 15)
Alarm
#
Alarm DescriptionAlarm Name
9151 Reverse Noise Rise
Very High Alarm:
Sector 1
This alarm is generated whenever a reverse noise rise measurement
(rolling average over a configurable number of samples) exceeds a reverse
noise rise threshold. Two alarm levels can be specified: a very high (first
level) and a high (second level). The order of alarming by increasing
severity is normal condition, then high (second level), followed by very
high (first level). A Reverse Noise Rise Very High Alarm clear is
generated whenever the reverse noise rise measurement recedes below the
reverse noise rise threshold minus a Delta.
9161 Forward Power High
Alarm: Sector 1
This alarm is generated whenever the P out of N forward gain samples
(where N and P may be configured) exceed a configurable forward gain
threshold. Two alarm levels can be specified: a very high (first level) and
a high (second level). The order of alarms listed by increasing severity is:
normal condition, high (second level), and very high (first level). A
Forward Power High Alarm Clear is generated whenever P out of N
forward gain samples fall below the forward threshold minus a forward
gain Delta.
9171 Reverse Noise Rise
High Alarm: Sector 1
This alarm is generated whenever a reverse noise rise measurement
(rolling average over a configurable number of samples) exceeds a reverse
noise rise threshold. Two alarm levels can be specified: a very high (first
level) and a high (second level). The order of alarms listed by increasing
severity are: normal condition, high (second level), and very high (first
level). A Reverse Noise Rise High Alarm Clear is generated whenever
the reverse noise rise measurement recedes below the reverse noise rise
threshold minus a delta.
9210 Forward Power
Limiting Alarm
When the Forward Power Limiting alarm is activated, the BTS controller
will instruct the CDMA transceiver to limit the forward power at or below
the current peak power level (or at a fixed power level) or to reduce the
forward gain by a fixed amount. A Forward Power Limiting Alarm is
generated whenever the forward power exceeds the user definable fixed
power threshold (fixed limit mode), or the forward gain measurement
exceeds the forward gain limiting threshold (self–calibrating limit mode).
A Forward Power Limiting Alarm Clear is generated whenever the
forward power falls below the power limit threshold minus a clear event
delta (fixed limit mode) or the forward gain measurement falls below the
forward gain limiting threshold minus a forward gain limiting delta
(self–calibrating limit mode).
9211 Forward Power
Limiting Alarm –
Recovery Attempts
Exceeded
This alarm is generated when the system has tried to recover the LPA
over–driven condition for the user–configurable maximum number of
times and the over–driven condition still exist. This alarm is only
applicable for the self–calibrating limit mode.
Synchronization Alarms
10030 Lost Phase Lock This alarm is generated when the active BTS DPLL loses phase lock and
re–enters acquisition mode. If the BTS does not regain phase lock, or
repeatedly gains and loses phase lock, the problem is most likely a
hardware problem in the unit.
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