ATEM Constellation HD uses a professional "program/preview" style operation, which is the exact same way large broadcasters use live production switchers. This means you are using the same type of switcher used by the television industry. Both the free ATEM Software Control and the optional hardware ATEM Advanced Panels will allow program/preview style switching. This means you can select a source on the preview bus to ensure it’s correct before pushing the CUT or AUTO button to switch it on air. This 2 step program/preview process means far fewer mistakes! Program/preview operation means ATEM Constellation is the best solution for training students for a career in broadcast television!