Scientific Atlanta D9479 User Manual

Description
The Model D9479 Gigabit QAM Modulator (GQAM)
represents an innovation in video transmission
technology. The GQAM contains five input ports
including four digital video broadcasting (DVB)
standard asynchronous serial interface (ASI) inputs
and a Gigabit Ethernet (GbE) port.
The GQAM contains the core functionality of four of our Model D9477 MQAM Modulators.
One GQAM frees up a total of seven additional rack unit (RU) openings, thereby making
the GQAM an exceptional product for mass deployment of video-on-demand (VOD),
anything-On-Demand (xOD), and other interactive broadcast services.
The four ASI inputs allow for direct connection to current generation video servers,
encoders, integrated receiver-decoders (IRDs), and other digital video sources at the
headend. The GbE interface allows for connection to the next generation of video
servers, either linked locally with the GQAM or remotely through a network.
Features
• Contains the core functionality of the MQAM modulator
• Includes 5 input ports and can provide up to 16 QAM outputs to achieve the
broadcast capacity of 4 MQAM modulators or 16 QAM modulators
• Enables direct connect to both DVB ASI and Gigabit Ethernet video sources at the
same time and the capacity to create transport streams from any combination of the
5 inputs
• Provides 4 DVB ASI inputs (216 Mbps each) and 1 plug-in Gigabit Ethernet input
(GBIC) to multiplex content from any input to any of the 16 outputs (channels)
• Uses an output center frequency range of 91 MHz to 867 MHz
• Incorporates PowerKEY
®
DES and DVB Common Scrambling Algorithm options
• Enables higher rack density to save space
• Optimizes system management with provisioning and monitoring by the DNCS
• Facilitates deployment in either a headend or a hub
Model D9479 Gigabit QAM Modulator
Subscriber Networks

Scientific Atlanta D9479 Specifications

General

Brand	Scientific Atlanta
Model	D9479
Category	Modulator
Language	English

Summary

Model D9479 Gigabit QAM Modulator Overview

Description

Overview of the Model D9479 GQAM's innovation in video transmission technology and its core functionality.

Key Features

Details the key features of the GQAM modulator, including input/output ports, capacity, and scrambling options.

Product Specifications

Digital I/O Performance

Specifies the maximum input and aggregate output data rates for digital I/O.

RF Specifications

Details RF parameters like block conversion, frequency range, tuning step, output power, and impedance.

Mechanical Specifications

Provides mechanical details including rack mount type, dimensions, and weight.

Additional Specifications and Compliance

Environmental and Electrical

Covers operating temperature, humidity, input voltage, power requirements, and dissipated power.

Connectors and Modulation

Lists available connectors and details modulation types, rates, and bandwidth.

Regulatory Compliance

States the regulatory compliance standards met by the product.

Ordering Information

Chassis and Interface Options

Provides part numbers for the Gigabit QAM Modulator Chassis and Gigabit Ethernet Interface Options.