Local Control Module - Cisco GS7000 Installation And Operation Manual

Chapter 2 Theory of Operation

Local Control Module

Overview
A local control module and a status monitor are available for the 1.2 GHz GS7000
Node and Hub Node. A status monitor consists of a local control module with a
transponder core module installed in the housing. The same housing is used for both
units. The units perform the following function:
Local Control Module - controls redundancy and forward segmentation, and

configures the modules
Status Monitor - adds status monitoring capability to the local control module

DOCSIS capability

Status Monitor Description
The status monitor is HMS compliant and provides node monitoring and control
capability at the cable plant's headend. The following node voltages and signals are
monitored and their status reported to the headend by the status monitor.

Receiver optical input level (all receivers)

Transmitter optical output level (all transmitters)

AC power presence and peak voltage (for split AC powering cases, AC
power from both sides of node housing is monitored)

DC voltages from both primary and redundant power supplies

Optical amplifier operating parameters

Optical switch operating parameters
Commands are sent from the headend to the status monitor. The status monitor
communicates serially with the RF amplifier module to control the optional forward
band redundancy switches on the forward configuration module, the reverse band 6
dB (wink) attenuators on the reverse amplifier PWB, and the reverse band on/off
switches on the reverse amplifier PWB.
Note: Configuration parameters for the transponder core module, such as IP address,
can be changed using the PC-based GS7000 ViewPort software.
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