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Alarm
Message
Sync Loss!
LO Lock Fail!
Clock Lock
Fail!
Fifo Overflow!
+15V Fail!
+8V Fail!
+3V Fail!
+27V Fail!
5.1 Drawer Alarms
On the System Alarm/Log screen it is possible to check and review all alarms, current and
past, on each one of RF power drawer. From the Main Menu screen select system alarm/log,
screen [3000].
© Linear Industries, Inc. All Rights Reserved
Alarm Description
Sync loss on the
transport stream
Up-Converter LO
PLL unlocked
Clock at Modulator
unlocked
Overflow on FIFO at
the modulator
Lack of +15V.
Lack of +8V.
Lack of +3V.
Lack of +27V.
Main Menu :
Setup Menu
Measurements
-> System Alarms/Log
Remote Access
Select System Alarms/Log and ENTER
System Alarm/Log
Current Alarms
Alarm Log
-> Drawer Alarms
Clear Alarm Log
AT71-250 Transmitter Owner's Manual
Action Required
Alarm LED ON
Shut down RF
Re-program the
PLL
Alarm LED ON
Alarm LED ON
Alarm LED ON
Alarm LED ON
Alarm LED ON
Alarm LED ON
[0000]
[3000]
After Alarm Ceases
Alarm LED OFF
Past alarm LED ON
Returns to the last RF level
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