High-voltage, wide-bandwidth differential probe
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Schneider Electric Ltd
Posted to News on 4th Feb 2025, 16:30

High-voltage, wide-bandwidth differential probe

Yokogawa Test and Measurement Corporation announces the release of its PBDH0400 series differential probe with a maximum input voltage of 2000 V and a frequency bandwidth of 400 MHz.

High-voltage, wide-bandwidth differential probe

PBDH0400 series differential probes are able to deliver the measurements required for developing the next generation of higher speed power devices that can contribute to the realisation of a sustainable society.

With growing emphasis on measures that will help to achieve decarbonisation across all areas of society, there is a need to increase the energy efficiency of motors and inverters used in the transportation and renewable energy sectors.

This requirement is particularly acute in the power electronics industry, where the increase in applications for - and production of - next-generation power devices utilising silicon-carbide (SiC) technology necessitates the ultra-precise measurement of high-voltage and higher speed signals.

This task requires performing measurements from an ungrounded (floating) potential, necessitating the use of differential probes rather than standard probes. Yokogawa Test and Measurement therefore set about developing wide-bandwidth differential probes capable of measuring high-voltage and high-speed signals. The new probes contribute to a more sustainable society through improved energy efficiency.

Initially, two models of the PBDH0400 series will be available: the 702922 model with a maximum input voltage of 2000 V, and the 702921 with a maximum input voltage of 1000 V.

High-voltage and wide-bandwidth measurement

To perform the accurate waveform observation of faster-changing signals prevalent in electric vehicle (EV) and clean energy applications, PBDH0400 series differential probes measure voltages over 1000 V and offer a wide frequency range from DC to 400 MHz.

This capability is particularly beneficial for developers of next-generation inverters, enabling the accurate observation of tiny changes in high-speed switching signals. In addition, excellent noise resistance allows the detection of events that can cause unexpected anomalies, including waveform overshoot and ringing.

Automatic power supply and attenuation setting

The PBDH0400 series features the Yokogawa probe interface, saving both cost and installation space by eliminating the need for an external power supply when connected to a Yokogawa oscilloscope.

Furthermore, the probe attenuation ratio is automatically set through the interface so that measurement can start immediately after connection to the instrument. Combining the PBDH0400 with Yokogawa's 12-bit DLM5000HD or DLM3000HD oscilloscopes enables more accurate waveform measurements.

Yokogawa UK Ltd

Manor Park
WA7 1TR
UNITED KINGDOM

+44 (0)1928 597 100

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