Cisco GS7000 Installation And Configuration Manual page 20

Chapter 1 Overview
The Model GS7000 Node receives forward optical inputs, converts the input to an
electrical RF signal, and outputs the RF signals at up to six ports. The forward
bandwidth is from 52 MHz (or 54, or 70, or 86 MHz) to 1002 MHz. The lower edge of
the passband is determined by the diplex filter and the reverse amplifier assembly.
Diplex filter choices are 52 MHz, 54 MHz, 70 MHz, or 86 MHz.
The forward path of the Model GS7000 Node can be deployed with a broadcast
1310/1550 nm optical receiver with common services distributed to either four
output ports (all high level) or six output ports (two high level and four lower level).
The forward path can also be segmented by using one optical receiver that feeds all
output ports, two independent optical receivers that each feed half of the node's
output ports (left/right segmentation) or four independent optical receivers that
feed four independent forward paths. Forward optical path redundancy is
supported via the use of an optional local control module. The type of forward
segmentation and/or redundancy is determined by the type of RF amplifier
assembly and Forward Configuration Module installed in the node.
The Model GS7000 Node's reverse path is equally flexible. Reverse traffic can be
segmented or combined and routed to up to four FP or DFB reverse optical
transmitters, or to two advanced Baseband Digital Reverse (BDR) optical
transmitters as part of our BDR system. Redundant (back-up) transmitters may be
utilized. In addition, an auxiliary input path is provided for reverse signal injection
(5 - 210 MHz). Reverse segmentation and/or redundancy is determined by the type
of Reverse Configuration Module installed in the node.
The Model GS7000 Node accepts Optical Transmitter Modules based on the existing
694x/GainMaker optical transmitters. Reverse optical transmitters can be installed to
transmit data, video, or both. Reverse bandwidth is determined by the diplex filter
and the reverse amplifier assembly. Diplex filter choices are 40 MHz, 42 MHz, 55
MHz, or 65 MHz.
A new low-power receiver has been developed for the Model GS7000 Node, and is
compatible with existing 694X and GainMaker Nodes. The Model GS7000 Node
utilizes new transmitter and receiver module covers that have been designed to
allow fiber pigtails storage within them, providing improved fiber management
within the node.
Up to four optical receivers and up to four analog or two digital transmitters can be
installed in the Model GS7000 Node.
45 - 90 V AC input power is converted to +24.5, +8.5, -6.0, and +5.5 V DC by an
internal power supply to power the Model GS7000 Node.
Hub Node
The Model GS7000 Hub Node performs the same functions as the Model GS7000
Node with the added benefit of also providing optical gain and optical switching
capability. The hub node allows you to push fiber deeper into your network while
taking advantage of the RF plant that is already in place.
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