CD-DSK-HD is a modular HD/SD tri-channel downstream keyer designed to operate in a CD Series frame. It supports 3-level linear keying process on input HD/SD-SDI digital video graphics. CD-DSK-HD provides 3 pairs of key & fill inputs and one program input. All the key inputs can be keyed onto the program simultaneously or individually. It supports four modes of video mixing: fade-cut, cut-fade, fade-fade and cut. Transition speeds are fast, medium and slow. CD-DSK-HD offers dual processed digital program outputs and one digital preview output. CD-DSK-HD can be controlled by a programmable GPI interface or by the dedicated control panel. It supports one-button triggered bypass protection. This ensures the program can be output without interruption even when power is off. CD-DSK-HD can be housed in a 1RU or 2RU CD Series frame. It supports network monitoring function of CD Series. Its various parameters can be configured and adjusted through CD Series’s router and the supporting control software which can also monitor the operating status and signal status of the module.