RGB Networks SEP48. RGB’s Simulcast Edge Processor (SEP) delivers the industry’s most complete solution for digital simulcast edge decoding applications, offering the ability to MPEG decode, NTSC modulate and upconvert multiple video streams in a single rack unit chassis. Based on a highly flexible, scalable, modular platform, the SEP is the ideal solution for simplifying digital simulcast deployments and making a smooth transition to fully digital networks. SEP48