The GUI (graphical user interface) for ContinuousWave (CW) programmable AC Power Source Series is a LabVIEW interface with a free Windows driver that can be downloaded from the company's website. The GUI enables remote adjustment of voltage, current, and frequency. Values can be stored and routines created or recalled from a remote location. Operations that can be performed with the GUI include: clock out, initialize standard by mode, control phase, channels and address (for series and parallel compilations). The power source measures voltage, peak current, frequency, power, apparent power, power factor, and crest factor.