The Vce, Ic, output voltage, and current waveform of the upper and lower arms of an inverter can be simultaneously measured.
dv/dt, di/dt, and other parameters such as power loss can be easily calculated from the measurement waveforms.

■FFT function
This function is used for the frequency analysis of measured waveforms.

■Reference display function
This function is used to compare waveforms.

■Edge search function
This function is used to automatically detect the edge of a monitored waveform and display selected edges.

■X-Y display function
This function is used to evaluate the SOA (safe operation area) and other items.

The waveform of output voltage from the 3-phase inverter that drives a motor or other device (shown in the left-hand figure) is a pulse voltage waveform as shown in the figure below.

Differential probes were used for this type of measurement in the past, but this resulted in the waveform sometimes being distorted, and it was sometimes difficult to ensure sufficient measurement bandwidth due to constraints of the common mode rejection ratio or withstand common mode voltage.
With optical fiber isolation, this isolation system can accurately monitor signals without being affected by these constraints.