Cisco Cisco Legacy RF Accessories Ficha De Dados

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

22368

Scientific-Atlanta manufactures a broad line of interstage trim networks to meet the needs of the variety of advanced
amplifiers and architectures being deployed today. These passive trim networks compensate for amplitude/frequency
variations by superimposing a response that is opposite to that of the uncompensated cascade. Trim networks allow
adjustment of an amplifiers frequency response to be as uniform as possible across the entire output spectrum. They can be
adjusted, within limits, to cover a wide range of individual requirements.

There are two basic types of trim networks available, peak and dip trim networks. Peak networks operate as broad
bandwidth tunable attenuators, while dip networks operate as narrow bandwidth tunable attenuators. Trim networks
introduce 1 to 3 dB of flat loss in an amplifier station. This loss can be compensated for by reducing input or interstage pad
values as necessary.

Trims are classified according to their operational characteristics (i.e., frequency, insertion loss, pad socket, peak or dip, and
forward or reverse direction). The type and use factor for specific trim networks is determined by evaluating actual system
frequency response. A broad selection of trim networks should be on hand at the outset of balance and alignment
procedures. 

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