351804-1 Rev. 100
COM5000-8 TECHNICAL MANUAL
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3.2.2
PA Module
Figure 3.2.2 shows the PA Module front panel.
The indicators are described below:
Indicator
Function
POWER LED, (green)
When lit, indicates that bias is enabled in the PA module.
FAULT LED, (red)
When lit continuously, indicates a fault in the PA module.
3.2.3
System Controller Module
Figure 3.2.3 shows the System Controller Module front panel.
The controls and indicators are described below:
Control/Indicator
Function
Reflected Power Meter
Display reflected power in watts.
Forward Power Meter
Displays forward power in watts.
TEMP Fault LED, (red)
When lit continuously, indicates over-temperature in
a PA module or in the Combiner module.
VSWR Fault LED, (red)
When lit continuously, indicates that the antenna
VSWR exceeds approximately 4:1
SPLY Fault LED, (red)
When lit continuously, indicates there is a DC supply
voltage fault.
AIRFLOW Fault LED, (red)
When lit continuously, indicates failure of one or
more FANS in a PA module or in the Combiner
module.
AMP OFF status LED (red)
When lit, indicates that the 50VDC supply voltage is
not present and/or communication with the
T-4180 Exciter has not been established.
STDBY status LED (yellow)
When lit indicates that the 50VDC supply module is
ON and communication with the Exciter has been
established.
OPER status LED (green)
When lit, indicates that the transmitter is ready to
operate.
BIAS status LED (green)
When lit, indicates that the transmitter is keyed.
LINE LED, (yellow)
When lit, indicates that the AC Line voltage has been
applied to the System Controller module (front panel
ON/OFF switch is turned ON).
ON/OFF switch
Connects and disconnects AC Line input voltage.
