Paradise 205486 REV F User Manual

Operations Manual, HPA2, Compact Outdoor SSPA 

205486 REV F 

41 

 

This section describes some of the standard RF tests performed on production amplifiers 
before shipment. Where possible Paradise Datacom, LLC maintains computer automated RF 
test stations to ensure a high level of accuracy and consistency to production amplifier 
testing. 

 

 
The amplifier gain is swept over the operating frequency range under small signal conditions 
to confirm the minimum gain and gain flatness specifications. The entire Compact Outdoor 
Amplifier is tested in a temperature chamber from -40°C to +55°C; and the gain is recorded.   
 

 

 

The 1 dB Gain Compression Point is measured at discrete frequencies across the band to 
characterize the output power over the operating frequency range.  The P

1dB

 is a guaranteed 

minimum specification.  
 

 

The input and output return loss are measured in all production amplifiers. This is a measure 
of how closely the amplifier is matched to its characteristic impedance. The input impedance 
of the amplifier is a nominal 50 ohms while the output is matched to the waveguide complex 
impedance. 
 

 
Spurious signals are undesirable byproducts of amplifiers caused by nonlinearities within the 
amplifier and other system level components such as switch mode power supplies. These 
unwanted signals cause signal management problems in system applications. Out of band 
spurious signals cause interference to other pieces of equipment. 
 

 
The RF Sample port is measured at discrete frequencies across the band and a calibration 
label is placed near the type N connector on the bottom of the unit. The sample port is 
approximately -40 dB down from the RF output. A label with the exact coupling ratio is 
attached to the amplifier chassis.