Extron Glossary of Terms
Digital AV

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SMPTE 424M - Defines a full bandwidth, 4:4:4 RGB color space and bandwidth up to 2.97 Gbps on a single coaxial cable. SMPTE 424M is colloquially known as 3G-SDI, a term used to describe 2.970 Gigabits per second digital video over a single-link coaxial cable. 3G-SDI is capable of supporting HDTV 1080p video at 50 or 60 frames per second. Most 3G-SDI terminal equipment, such as Extron 3G-SDI matrix switchers, simple switchers, distribution amplifiers, cable equalizers, and fiber optic extenders, is capable of supporting standard SDI data rates from 270 Mbps to 2.970 Gbps.