Voltcraft dso 2202 usb 2 channel 200mhz oscilloscope voltcraft dso 2202 usb p the voltcraft dso 2202 is a usb oscilloscope that when used in conjunction with a windows reg based computer with a usb 2 0 interface you get an extensively equipped storage oscilloscope with the additional advantage that the measurement data can be stored and processed p p the attachment can be used as a fully digital storage oscilloscope short dso for the visualisation of electric quantities and signals