Cisco Model GS7000 4-Port Node 1 GHz with 42 54 Split Guida All'Installazione
Chapter 2 Theory of Operation
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The thermal circuit on the RF amplifier module is designed to compensate for the RF
forward path thermal movement of the entire node RF station. This includes the
forward path amplifier module circuitry, RF cables, and optical interface board
circuitry. It does not include the thermal movement of the optical receivers.
forward path thermal movement of the entire node RF station. This includes the
forward path amplifier module circuitry, RF cables, and optical interface board
circuitry. It does not include the thermal movement of the optical receivers.
Forward Configuration Module
The forward configuration module determines the forward path topology in the RF
amplifier module and the GS7000 Node. The output signals from one to four optical
receivers enter the forward configuration module where they are combined and or
directed to the two or four independent forward paths in the RF amplifier module.
Forward path segmentation and/or redundancy are set by plugging the appropriate
forward configuration module into the RF amplifier module. The forward
configuration module is a plug-in, field accessible module. See Forward
Configuration Module (on page 36) for more information.
amplifier module and the GS7000 Node. The output signals from one to four optical
receivers enter the forward configuration module where they are combined and or
directed to the two or four independent forward paths in the RF amplifier module.
Forward path segmentation and/or redundancy are set by plugging the appropriate
forward configuration module into the RF amplifier module. The forward
configuration module is a plug-in, field accessible module. See Forward
Configuration Module (on page 36) for more information.
Forward Band Linear Equalizer Module
The forward band linear equalizer module sets the overall forward path tilt of the RF
amplifier module and the GS7000 Node. The 4-way segmentable launch amplifier is
shipped with four 15.0 dB linear equalizers installed in the RF amplifier module.
One equalizer is installed in each of the amplifier modules four forward paths. The
2-way segmentable launch amplifier is shipped with two 7.5 dB linear equalizers
installed in the RF amplifier module. One equalizer is installed in each of the
amplifier modules two forward paths. This sets the nodes forward path tilt to 14.5
dB linear. Forward band linear equalizer modules of other values are available. This
allows the nodes forward path tilt to be adjusted as needed. The forward band linear
equalizer module is a plug-in, field accessible module. See the equalizer charts in
Appendix A - Technical Information.
amplifier module and the GS7000 Node. The 4-way segmentable launch amplifier is
shipped with four 15.0 dB linear equalizers installed in the RF amplifier module.
One equalizer is installed in each of the amplifier modules four forward paths. The
2-way segmentable launch amplifier is shipped with two 7.5 dB linear equalizers
installed in the RF amplifier module. One equalizer is installed in each of the
amplifier modules two forward paths. This sets the nodes forward path tilt to 14.5
dB linear. Forward band linear equalizer modules of other values are available. This
allows the nodes forward path tilt to be adjusted as needed. The forward band linear
equalizer module is a plug-in, field accessible module. See the equalizer charts in
Appendix A - Technical Information.
Node Signal Director Jumper/Splitter Module
Node signal director jumper/splitter modules are present on the center output ports
on either end of the RF amplifier module. The orientation of these modules
determines where the RF amplifiers center output port signals are directed. The
node signal director jumper allows the center output port signals to be routed to
either the amplifiers primary center output port or to its auxiliary corner output port.
The node signal director splitter module splits the center output port signals equally
between the primary and auxiliary output ports. The node signal director
jumper/splitter module is a plug-in, field accessible module.
on either end of the RF amplifier module. The orientation of these modules
determines where the RF amplifiers center output port signals are directed. The
node signal director jumper allows the center output port signals to be routed to
either the amplifiers primary center output port or to its auxiliary corner output port.
The node signal director splitter module splits the center output port signals equally
between the primary and auxiliary output ports. The node signal director
jumper/splitter module is a plug-in, field accessible module.
Auxiliary Reverse Injection Director Module
Auxiliary reverse injection director modules are present on the auxiliary corner
output ports on either end of the RF amplifier module. The orientation of these
modules determine if the nodes auxiliary output ports are configured to be primary
or split node output ports, or local reverse injection ports. The auxiliary reverse
injection director module is a plug-in module. It is accessible only after the RF
output ports on either end of the RF amplifier module. The orientation of these
modules determine if the nodes auxiliary output ports are configured to be primary
or split node output ports, or local reverse injection ports. The auxiliary reverse
injection director module is a plug-in module. It is accessible only after the RF