How to extend a video-audio matrix switcher?
Adding inputs, outputs or both may extend a matrix switcher. In order to add OUTPUTS to a matrix setup, a second switcher is added, and the inputs of both matrices are connected in parallel (while assuring proper input termination, to avoid double termination). In order to add INPUTS to an existing matrix, a second matrix is connected – paralleling the outputs of both machines. When a matrix is to be extended in both directions, both INPUTS and OUTPUTS are paralleled, requiring four or more machines. A matrix can be extended only if it is designed as an extendable matrix, e.g., inputs must be looping and outputs must be able to be internally disconnected or become “floating”.
