Theory Of Operation - Cisco GS7000 Installation And Operation Manual

2 Chapter 2

Theory of Operation

Introduction
This chapter describes the theory of operation for the 1.2 GHz GS7000
Node, including functional descriptions of each module in the node.
The 1.2 GHz GS7000 Node is comprised of two parts, the lid and the
base.
The lid houses an optical interface board (OIB), and some of the
following products: one to four optical receivers, one to four optical
transmitters, one digital return module with one or two digital
transmitters, EDFA (optional), optical switch (optional), a status
monitor (optional) or a local control module (optional), one or two
power supplies, and a fiber management tray/track.
The base houses the RF amplifier module and the accessories that plug
into it. These accessories include a forward configuration module, four
forward band linear equalizer modules, multiple attenuator pads, two
node signal director jumper or splitter modules, and two auxiliary
reverse injection director modules. Also contained within the launch
amplifier module are a reverse auxiliary
jumper/combiner/amplifier/termination module and a reverse
configuration module.
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