User's Manual

NTUM30DA Installation & Service Manual
4-6 Power Distribution
Primary DC power for the amplifier is provided by the host system. The amplifier generates all
the required voltages internally from the main source.
4-7 Amplifier Alarms
4-7.1 Minor Alarms
When a minor alarm condition occurs, the alarm is latched into a minor alarm condition. The am-
plifier alarm state is read by the BTS the next time the amplifier is poled by the BTS. After the
alarm status is sent the minor alarm register is cleared, unless the alarm condition still exists. If
the amplifier receives a “Enable Command” or “Clear Alarms Command”, all minor alarms will be
cleared. If the amplifier is disabled, all minor alarms are also cleared.
Minor alarms do not directly affect amplifier functionality.
BTS MCPA
OPERATIONAL
Read Power and Status response - Alarm reported
Minor Alarm condition
appears
Minor Alarm condition
disappears
Read Power and Status command
Minor Alarm condition
still exists
Read Power and Status command
Read Power and Status response - Alarm reported
Read Power and Status command
Read Power and Status response - No Alarm reported
Figure 4-2 Minor Alarm Reporting Sequence
4-7.1.1 Main Loop Cancellation Alarm (1
st
Loop Alarm)
During normal operation, if the 1
st
Loop is not locked for 30 seconds a Main Loop Cancellation
Alarm is declared. During power-up, the BTS waits for 30 seconds to allow the 1
st
Loop to lock.
When the main amplifier is first turned on, the Main Loop Cancellation Alarm ON is on until the
loops converge. The BTS allows 30 seconds for the alarm to clear after putting the amplifier into
Operational mode before reporting the alarm.
Copyright Powerwave Technologies, Inc., June 2003. All rights reserved
044-05141 Rev. A 4-3 June 2003