User Manual
Andrew Wireless Solutions
Propriety – Use pursuant to Company Instruction
7 of 7
(Minor Alarms are shown by
Green and Yellow at the same
time)
Condition
(Shading shows
grouping)
Alarm Type
Green LED
Normal
Yellow LED
Major
Red LED
Critical
Comments Retry
Initial Power On, no
alarms
- On On On On for ½ - 1½ secs -
Self Test fail Critical On -
Normal Operation –
RF enabled
- On - - - -
Normal Operation –
RF disabled
- Fast Flash - - 1 Hz complete cycle -
Fans (see note 1) Minor On On - No action
High temp,
Minor
Minor On On - Auto-recover Y
High temp,
Critical (see note 2)
Critical - - On Shut down Y
RF overdrive
Major (see note 3)
Major - On - Gain reduced, Auto-recover Y
RF Overdrive
Critical (see note 4)
Critical - - On Shut down Y
Linearizer (see note
5)
Critical - -- On Shut down -
Device health and
Internal Voltages
Critical - - On Shut down -
Sensor fault (see
note 6)
Critical - - On Shut down -
Device current (see
note 7)
Critical - - On Shut down -
VSWR minor (see
note 8)
Minor On On - No action. 4 sec delay to turn on the LEDs Y
VSWR critical (see
note 9)
Critical - - On Shut down Y
Low input voltage
(<26V)
Major - On - Gain reduced, Auto-recover Y
Bias fault (factory
only) (see note 10)
Critical - - On Shut down -
Self-test fail (see
note 11)
Critical - - On Shut down -
Configuration fault
(EEPROM
checksum)
Critical - - On Shut down -
Table 2 Alarm mapping for PA Module
Note 1: Fan failure is considered a minor alarm since there is no immediate impact on
unit operation, the seriousness depends on ambient temperature, and the high
temperature critical alarm will eventually protect the unit from damage.
Note 2: High temp: will retry when the temperature drops by a hysteresis amount, if
there is no fan alarm.
Note 3: Whenever the overdrive protection mechanism (see above) requires added
attenuation for a sustained period equal to the alarm hysteresis time, an overdrive major
alarm is declared. This condition indicates that firmware has reduced amplifier gain, but
the amplifier output is not being overdriven. This threshold is typically 0.5 dB above
rated output power.
Note 4: This alarm indicates that the input level is of a value which cannot be attenuated
enough by the input attenuator. Shut down must happen fairly quickly (20-100 mS
tentative) to avoid tripping the circuit breakers and to avoid RF device failure. This