The Instek DS3-PWR Power Analysis Software is an optional accessory for use with the GDS-3000 Series Digital Storage Oscilloscopes. The optional power analysis software facilitates the engineer's tasks in testing and manufacturing of the associated products. The Power Analysis software provides automatic measurement for a number of advanced measurement types such as power quality, harmonics, ripple and inrush current. Power quality measures the power of a signal from the voltage and current measurement. The harmonics function shows signal harmonics up to the 400th harmonic. Harmonic tests can be user defined and common harmonic standards such as IEC 61000-3-2 can also be tested for. The ripple function automatically calculates the ripple and noise of the waveform. The inrush function automatically calculates the first peak and second peak inrush current.