How does the iScan VP20 detect incoming signals?
The iScan VP20 has been designed to detect which of the nine possible input devices is turned on and is generating an active signal, and then to automatically switch to that input. With this capability, you can switch inputs simply by turning one input device on or by turning another device off. The iScan VP20 also includes an “Input Priority” option which specifies which of the inputs to use when they are multiple active inputs. There is also automatic source detection, so you can let the iScan VP20 do the switching if you wish. When you select an input source, one of the selections is “Auto”, which is the iScan’s automatic source switching. When in auto mode, the iScan VP20 will consult an internal priority list for the inputs (the list is user-configurable) and will choose the highest priority input that has an active signal.