Base Radio Alarms
Chapter 13: MTS Troubleshooting
Table 13-7
Generic Base Radio Alarms (Continued)
Alarm ID
Description
Recovery
Action
Clear Action
Notes
ALM_RX_VCO_MON_FAULT
Receiver VCO
monitoring
failure.
Receiver is
disabled by
the software -
BRC is unable to
receive.
If the alarm
condition
disappears then
Receiver is
re-enabled by
the software.
The alarm may be
reported because
of the BRC
hardware failure
or con
fi
guration
problems.
ALM_RX_VCO_MON_FAIL
The same as ALM_RX_VCO_MON_FAULT
ALM_BRC_VCXO_UN-
LOCK_ALM
VCXO is
unlocked -
the alarm is
reported as a
fault indication
message from
DSP.
No recovery
action taken by
the software.
The alarm will
be cleared after
de-keying BRC.
The alarm means that
the BRC reference
is not locked to an
external reference
and VCXO frequency
tolerance can vary
between 0.025 and
1.5ppm. The alarm
may be reported
because of the
external reference
failure or BRC
hardware failure.
ALM_BRC_RE-
PLACE_VCXO_ALM
VCXO should
be replaced -
the alarm is
reported as a
fault indication
message from
DSP.
No recovery
action taken by
the software.
The alarm will
be cleared after
de-keying BRC.
This is an indication
the reference clock
may go out of lock in
the future.
ALM_RX_ABACUS_CLK_SL
Receiver main
Abacus clock
failure.
Receiver is
disabled by
the software -
BRC is unable to
receive.
If the alarm
condition
disappears then
Receiver is
re-enabled by
the software.
The alarm may be
reported because
of the BRC
hardware failure
or con
fi
guration
problems.
ALM_RX_ABA-
CUS_CLK_SL_FAIL
The same as ALM_RX_ABACUS_CLK_SL
ALM_RX_ABACUS_LO2_SL
Receiver main
Abacus 2nd LO
failure.
Receiver is
disabled by
the software -
BRC is unable to
receive.
If the alarm
condition
disappears then
Receiver is
re-enabled by
the software.
The alarm may be
reported because
of the BRC
hardware failure
or con
fi
guration
problems.
ALM_RX_ABACUS_2LO_SL_FAIL Reported when ALM_RX_ABACUS_LO2_SL is set and ALM_RX_5_VOLT
is cleared
13-22
6802800U74-N September 2009
Содержание DIMETRA MTS 2
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