16×16 Matrix Switch
This is the VSM-16-16 by Hall Research. This device is used for “cross-point switching” of up to 16 video signals - which can be useful in television broadcasting, multimedia presentations, school classrooms, courtrooms, and other display presentations.
The VSM-16-16 can be controlled with the serial RS-232 control ports, or using the front panel’s control buttons.
The following is a block diagram put together by Hall Research that explains how the 16×16 Matrix Switch can be configured:
