Руководство По Установке для Cisco Compact Mini Amp Models 93191 & 93198 862 MHz with 42 54 MHz Split
Using 1 GHz GainMaker Amplifiers in
an 870 MHz System Application Note
an 870 MHz System Application Note
Overview
Introduction
The move to a 1 GHz cable telecommunications system infrastructure is being
driven by the increasing need for additional bandwidth. Cable system operators
are exploring the options available to add channels to their systems. One of these
options is an expansion of the current operating bandwidth.
An easy way to facilitate this bandwidth expansion is a simple drop-in of higher
An easy way to facilitate this bandwidth expansion is a simple drop-in of higher
bandwidth amplifiers into the system. These amplifiers are positioned in the
same locations as the previous lower bandwidth amplifiers. This drop-in scenario
minimizes the cost of labor involved since minimal or no re-splicing of equipment
is required.
In locations where the base portion of the housing is compatible with the new
In locations where the base portion of the housing is compatible with the new
amplifier module, the old module is simply exchanged with a new higher
bandwidth amplifier module. In these cases no re-splicing of housings is
required.
In situations where the housing base is not compatible with the new higher
In situations where the housing base is not compatible with the new higher
bandwidth amplifier module, the old amplifier station is removed and a new
higher bandwidth amplifier station is spliced in. Labor costs are again minimized
since the new higher bandwidth station is replacing the old station in the same
location. There is no need for re-routing of cables or addition of new cable; both
of which can be costly.
Discussion
Cisco has developed 1 GHz GainMaker® amplifiers that exhibit the specifications
required to drop-in to the locations of lower bandwidth amplifiers. Numerous
design studies have taken place proving this capability.
In existing 870 MHz GainMaker systems where additional bandwidth is not
In existing 870 MHz GainMaker systems where additional bandwidth is not
required, the GainMaker 1 GHz amplifiers are backwards compatible with the
GainMaker 870 MHz amplifiers. They can be used in place of the 870 MHz
amplifiers along with the existing 870 MHz accessories.