Paradise 205486 REV F User Manual

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 205486 REV F 

Operations Manual, HPA2, Compact Outdoor SSPA 

 
The EMI (Electro-magnetic Interference) Filter is a passive electronic device used to suppress 
conducted interference present on any power or signal line. It may be used to suppress the 
interference generated by the device itself as well as to suppress the interference generated 
by other equipment to improve the immunity of a device to the EMI signals present within its 
electromagnetic environment. The filter was designed with an added Metal Oxide Variable 
resistor (MOV) to provide transient voltage and surge protection. 
 

 
The Power Supply consists of one or two AC/DC Converters and a DC/DC Converter. 
 
4.2.1 AC / DC Converter 
 
The prime AC input power is delivered to a switching converter module that produces 300 
VDC. Depending on the input power requirement of the amplifier, there may be one or two 
AC/DC Converters present in the unit. These modules are auto-sensing, power factor 
corrected front ends that have proven reliability and allow the amplifier system to operate over 
a wide variety of input power conditions encountered around the world. A high current, 
common mode filter is used on the input side of the converter module that reduces switching 
components to very minimal levels. 
 
4.2.2 DC / DC Converter 
 
The DC/DC converter module is also a switched mode power supply that converts the 300 
VDC to 12 VDC.  This 12 VDC is the primary high current, DC voltage source that operates 
the entire amplifier system.   

 
The amplifier module is a unique high density, multifunction module.  It not only contains all of 
the RF signal amplification and distribution, but also is home to the microcontroller based 
monitor and control circuitry. An extremely robust regulation and bias control board supplies 
the power to the microwave GaAs FET devices. A separate microcontroller board provides 
the M&C functions for the amplifier. Some of the features of this board include:  

 
(3) Serial Ports 

(1) Dedicated Flash Firmware Programming  
(1) Ethernet Port for Host Communication 
(1) Selectable RS232 / RS485 for Host Communication 

(2) Form C Relays 

Summary Alarm, Auxiliary Alarm 

(5) Open Collector Outputs 

Summary, Auxiliary, Voltage, Current, Temperature, Block Up Converter Faults 

(2) Closure to Ground Inputs 

Mute, Auxiliary Input 

(8) 10 bit Analog Voltage Measurement Channels