The second property is system i/o scope S, composed as a weighed average of two parameters that can also be derived from the manufacturer’s specification list.
With this property, first there is the maximum i/o capacity of the system that can be used simultaneously with the available physical inputs and outputs. We’ll use the letter X to indicate this parameter, which can be calculated by adding the mixer’s channel inputs, channel insert inputs and outputs, channel direct outputs, bus insert inputs and outputs and bus outputs. However, the resulting value can be constrained by the mixer’s physical i/o capabilities, so the end result should be the lowest of the two.
Second, there is the maximum number of possible inputs that can be chosen from and controlled by the system’s own user interface. Theoretically with networks this number, indicated by the letter Y, is virtually infinite, but the mixer’s operating system usually has a limited capability to control a maximum number of inputs, for example the microphone pre-amplifiers. In most cases Y can be derived by checking the maximum number and size of input racks that can be supported simultaneously.
The resulting system scope can be calculated by adding the two results, arbitrarily applying a weight to each parameter: