Contemporary Research QMOD-SDI Integration Guide - Manual (Page 3)

Contemporary Research 3 QMOD-HD Integration
Overview
CR QMOD™ technology is opening the door to new HDTV applications. Thanks to CR innovation,
broadband RF over coax isn’t just for TV anymore. The broadband network that exists in many
sports, commercial, education, and civic facilities can be re-tasked for distribution of in-house high-
definition video and audio from HD satellite and cable receivers, IP and microwave driven media –
and digital signage.
A few years ago, this type of technology required a $30,000 investment per channel, down to
$15,000 a year later, and is now a practical, commercial solution for less than $2500 a channel. At
that cost, a wide range of new distribution and integration opportunities are possible.
How Does it Work?
While the technology is pretty amazing, the chips and codecs that make the magic work are now
available at a practical price. Older technology involved a number of separate, expensive
components. In the QMOD-HD, the entire solution is integrated into one HDTV Modulator:
 Analog to Digital Converter scans the selected video input and converts to digital packets
 MPEG-2 Encoder – high-performance DSP merges video and audio into an MPEG-2
transport stream
 QAM Channel Modulator fast FPGA chip formats the stream into a 64 or 256 QAM digital
cable channel
 Upconverter/Amplifier sets the channel to a specific number, then amplifies for
distribution through the RF system, typically up to 30 dBmV