Video switcher is wide band-width video/audio vertical interval switcher designed for the video professional use. It features compact modular design which allows it to handle video and audio in both the analog domain. The unit has sixteen channels of video and stereo audio. Digital and analog switching modules for both video and audio may be mixed in any combination for complete system flexibility. The inputs are non looping and offer outstanding return loss performance. For component digital applications, an optional analog monitoring output is available. Audio and video break-away are selected by a single switch on the front panel. Dual LEDs on the source selection and follow switch indicate follow or break-away. It allows the user to efficiently and economically route or delegate multiple video and audio signals. It may be controlled by a serial data feed of either RS-232 or RS-422/485 interface standards, selectable by a simple internal DIP switch. For integration into existing systems, it can be preset to respond to that instruction set as well.