Installation and Operating Manual
User Manual 
040003A010 Rev A      Page 9 of 25   
3.3  DETAILED STATUS INDICATOR AND MONITOR CONNECTOR INFORMATION 
The  detailed  amplifier  status  indicators, alarm truth table  and  monitor connector information is 
described in detail in Table 3-3 through Table 3-5. 
Table 3-3 Amplifier Status Indicators 
LED NAME 
FUNCTION 
INDICATION 
CONDITION 
RECOVERY 
PWR ON 
DC Power Up 
Indicator 
Green Light 
Power is turned on 
Power source is active 
Off 
Power is turned off 
EXCITER 
DRIVE 
RF Input Power 
Indicator 
Green Light 
 RF input power is at or above 
threshold. If no other alarms present, 
the amplifier is placed into transmit 
mode 
Set RF input power above threshold 
Off 
RF power at input is below the 
activation threshold. Amplifier is in 
standby mode 
CHECK FAN 
Alarm - Fan 
Failure or 
Service 
Required 
Red Light 
Alarm - Low fan speed or locked 
rotor detected. May require cleaning 
or replacement 
To reset the alarm, it is necessary to 
perform fan maintenance procedure 
Off 
Normal operation 
HI TEMP 
Alarm - High 
Temperature 
Amplifier 
Shutdown 
Red Light 
Alarm – Temperature has exceeded 
maximum operation threshold. The 
amplifier output is shutdown 
To reset the alarm, it is necessary for 
the amplifier to cool down to below 
the maximum safe operation 
threshold 
Off 
Normal operation 
HI VSWR 
Alarm - High 
VSWR at 
Amplifier Output 
Red Light 
Alarm > 3:1VSWR at the amplifier 
output was detected. The amplifier 
output is shutdown 
To reset the alarm, it is necessary to 
remove the high VSWR from the 
amplifier output and reapply RF input 
power (The alarm will remain 
illuminated after RF input power is 
removed) 
Off 
Normal operation 
HI INPUT 
Alarm - RF Input 
Power Above 
Maximum Rating 
Yellow Light 
Alarm - RF power at input exceeds 
maximum threshold level 
To reset the alarm, it is necessary to 
reduce RF drive signal level and 
reapply RF input power (The alarm 
will remain illuminated after RF input 
power is removed) 
Off 
Normal operation 
LOW OUTPUT 
Alarm - Low 
Output Power 
Yellow Light 
Alarm – the analog control loop is 
open. Amplifier is no longer able to 
adjust the output power 
Alarm is turned off only when the 
analog control loop is closed. Check 
if input signal level is within normal 
limits. If RF input is within range, and 
all other conditions are normal, this 
indicates a potential PA failure 
Off 
Normal operation 










