Velleman usb pc scope and 2 channel generator velleman pcsgu250 the feature packed velleman usb pc scope and 2 channel generator is a complete usb powered lab in a box the software offers a 2 channel oscilloscope spectrum analyser transient recorder function generator and bode plotter with the generator you can create your own waveforms using the integrated signal wave editor for automated measurements it is possible to generate wave sequences using file or computer input velleman pc