Cisco Model D9479 Gigabit QAM Modulator Installation Guide

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About This Guide 
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About This Guide 
Introduction 
This guide describes the Model D9479-1 120/230 VAC Gigabit QAM Modulator 
(GQAM) and the Model D9479-2 48 VDC GQAM. This guide provides installation, 
provisioning, operation, and troubleshooting procedures, as well as technical 
specifications.  
Note: In this guide, the Gigabit QAM modulator is referred to as the GQAM. 
 
Purpose 
This guide provides detailed specifications and component descriptions for the 
GQAM. This guide also includes all of the procedures that enable you to install, 
provision, and operate the GQAM within your DBDS. Call center personnel can use 
this guide to assist them with common troubleshooting procedures. 
 
Scope 
This guide includes the following topics: 
 
Descriptions of GQAM functions 
 
Descriptions of GQAM components 
 
Installation procedures 
 
Operation procedures 
 
Troubleshooting guidelines 
 
Customer support information 
 
GQAM technical specifications 
 
 
Audience 
This guide is written for cable network system administrators and engineers, DNCS 
operators, call center personnel, and system operators who are responsible for 
installing, operating, maintaining, and troubleshooting the GQAM.