User's Manual

Release 15 Alarm List – continued
DRAFT
SC300 1X BTS Hardware Installation, ATP, and FRU Procedures
JAN 2002
B-6
Table B-1: List of Alarms (Software Release 15)
Alarm
#
Alarm DescriptionAlarm Name
10040 GPS Reference Source
Failure
This alarm is generated when the BTS detects a failure (missing clock
pulses or associated device not ready) of its GPS reference source. The
additional alarm data will include information about the reference source
priority. The reference source priority is the priority of the GPS reference
source in relation to the other available reference sources.
This alarm will report when local conditions prevent proper GPS
reception or when the GPS system is taken down for configuration. If the
GPS reference source does not recover or repeatedly fails, a problem may
exist in the GPS receiver hardware. This alarm is only reported after the
GPS is lost for more than 30 seconds. The loss of GPS for shorter periods
of time is not considered unusual, especially if the antenna placement is
less than optimum. Short losses of GPS will have no impact on the
performance of the BTS.
10060 GPS Message Failure This alarm is generated when the BTS receives a message from the GPS
receiver that cannot be processed. The additional info will indicate if the
message problem was due to an unknown type, checksum failure, format
failure, incomplete message (timeout during message reception) or remote
GPS cable delay compensation failure. This alarm is provided to allow
additional status to be tracked.
10091 HSO Reference Source
Failure
This alarm is generated when the BTS detects a failure (missing clock
pulses) of its High Stability Oscillator (HSO) reference source. The
additional alarm data will include information about the reference source
priority. The reference source priority is the priority of the Rubidium
reference source in relation to the other available reference sources.
If the Rubidium reference source does not recover or repeatedly fails, a
problem may exist in the Rubidium Reference Source hardware.
10100 No Reference Source
Available
This alarm is generated when the BTS detects a failure of all of its
available reference sources.
10110 Reference Source
Switch
This alarm is generated when the BTS switches to an alternate reference
source. The additional alarm data will identify the alternate reference
source type (GPS, HSO, HSO2 – if sync daisy chain is used or freerun).
A reference source switch occurs when a reference source fails and an
alternate reference source is available. The reference source switch is
seamless and does not cause degradation in system performance
10111 Reference Source
Unreliable
This alarm is generated when the reporting device expires a given time
period during which its reference source is known to provide a reliable
clock for the maintenance of CDMA system time. Once the alarm is
generated, it is possible that the reporting device is running with a clock
that has drifted from CDMA system time. If so, the reporting device will
continue to support call originations and maintenance, but cannot
guarantee hand–off capability. The additional data will identify the
reference source the device is currently using as a timing reference.
B