Cisco Cisco 1 GHz GainMaker Amplifier データシート

 

 

 
 

The GainMaker

®

 Broadband Amplifier Platform includes a 

variety of RF amplifiers that address the divergent needs of 
today’s broadband networks.  All GainMaker amplifiers 
provide superior 2-way performance and reliability combined 
with a user-friendly layout.  All share common plug-in 
accessories and perform to 1 GHz in the forward path.  The 
System Amplifiers in this family provide multiple forward RF 
output ports while the Line Extenders provide a single forward 
RF output port. 
 
GainMaker System Amplifiers utilize GaAsFET technology in 
the interstage and output gain stages for improved distortion 
performance. 
 
The GainMaker High Output System Amplifier modules are capable of higher output levels than standard 
GainMaker System Amplifier modules and are mechanically compatible with previous System Amplifier II, II+, III 
and GainMaker housing bases.  The DC power supply is modular and located in an updated housing lid for easy 
access.  All GainMaker System Amplifier modules are factory configured with reverse amplifier, diplex filters, 
thermal compensation circuit, forward interstage pads, and interstage equalizer to ensure optimal performance.  
Optional single-pilot Automatic Gain Control (AGC) configurations are also available. 
 
The GainMaker High Output HGBT (High Gain Balanced Triple) System Amplifier has three forward outputs and 
is ideally suited for providing high (bridger) level RF to the feeder network. 
 
 

•  Capable of higher output levels than standard GainMaker amplifiers 

•  Common RF test points for forward output and reverse injection simplify reverse balancing 

•  Increased forward gain to facilitate drop-in bandwidth extensions without re-spacing  

•  High-performance GaAsFET gain stage technology 

•  Fixed-value, plug-in accessories are common to all GainMaker products 

•  60 and 90 volt AC powering capability 

•  15 ampere current capacity (steady state) and 25 ampere surge survivability 

•  Optional 3-state reverse switch (on/off/-6 dB) allows each reverse input to be isolated for noise and ingress 

troubleshooting (status monitoring required) 

•  AGC has Thermal backup, which eliminates disruptive RF output variation in the event of pilot loss 

•  QAM Pilot AGC now available in addition to existing analog carrier AGCs 

•  Improved hum modulation  

•  Plug-in, self-contained diplex filters 

•  Modular high-efficiency power supply allows simplified maintenance 

•  Reverse input pad and RF test point for each reverse input port allow optimum reverse path design and 

alignment 

•  Directional Coupler RF test points provide best accuracy 

•  Surge resistant circuitry ensures gain stage protection without fuses or other nuisance failure causing devices 

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