The Gra-Vue MVS-SD Input Module/4-SDI-Composite Video is a Quad SDI/CVBS input module for MVS modular multi-viewer system. It provides 4 channels of SDI/CVBS (auto-detect) video input and 4 channels of analog audio input.
There is also a SUB-D-15 port that provides a combination of an analog audio and a tally input. There is 1 audio channel and 1 tally display for each video signal. The MVS-SD also provides a tally interface, audio absence/silence/out-of-range detection, video freezing detection, and EDH detection.