R&S MXO-K333 three-phase power analysis oscilloscope software

Rohde & Schwarz has introduced the R&S MXO-K333 software option for three-phase power analysis on its MXO series oscilloscopes. The software adds in-depth measurement and analysis functions for testing and debugging three-phase power systems, drives and inverters.

Available for all four- and eight-channel models of the R&S MXO 3, MXO 4, MXO 5 and MXO 5C oscilloscopes, the software supports the analysis of voltage and current signals in three-phase AC systems. It keeps the captured waveforms visible during measurement, allowing engineers to review power values and check transient behaviour in the same instrument. Other oscilloscope functions such as math, spectrum analysis, measurement tracking and zone trigger remain available for further analysis.

A guided set-up wizard assigns the oscilloscope channels to the voltage and current probes used for the three-phase analysis. It verifies the wiring and supports common 2-, 3- and 4-wire configurations (2V2A, 3V3A and 3VN3A). After set-up, the software provides cycle-by-cycle calculations for RMS values, power factor, active power, reactive power and total power. By defining the input and output configuration, users can also calculate the system’s three-phase efficiency. Additional analysis views include phasor display, harmonic analysis and THD measurements in line with IEC 61000-3-2 and MIL-STD-1399.

As an oscilloscope-based solution, the software enables engineers to correlate three-phase power results directly with the underlying voltage and current waveforms in real time. This is especially valuable during R&D and debugging, when power behaviour often must be analysed alongside switching events, transients, control signals and communication activity. Users can combine the three-phase analysis with inherent MXO capabilities such as advanced triggering, FFT, automated measurements, track functions and protocol decoding. This allows engineers to move from power measurement to root-cause investigation in a single instrument.