Oscilloscope News

RS RT ZPR4031 January 2018 - Rohde & Schwarz broadens its oscilloscope probe portfolio for power measurements by introducing the R&S RT-ZPR40 power rail probe with 4 GHz bandwidth and the new R&S RT-ZHD high voltage differential probes. The R&S RT-ZHD probes are designed for complex measurements on state-of-the-art power electronics with voltages up to 6000 V.


The new R&S RT-ZPR40 power rail probe offers a 4 GHz bandwidth with a direct SMA connection or a 50 Ω pigtail coax connection to uncover such problems. The probe is ideal for use with the 4 GHz and 6 GHz R&S RTO2000 oscilloscopes. This combination allows the user to take advantage of the oscilloscope’s powerful FFT functionality and serial protocol decoding. Joerg Fries, Vice President Market Segments for T&M at Rohde & Schwarz, states: “The 4 GHz probe enables scope users to find EMI issues on power rails that they were previously unable to isolate.” If 4 GHz bandwidth is not necessary, the R&S RT-ZPR20 probe with 2 GHz bandwidth is an attractive alternative.

High Voltage Differential Probes

The R&S RT-ZHD probes offer a measurement bandwidth of up to 200 MHz, a particularly high common mode rejection ratio (CMRR) and at 0.5 percent, the best DC measurement accuracy available. Rohde & Schwarz also presents cost-efficient, high voltage differential probes with a 25 MHz bandwidth and very low inherent noise – ideal for general applications.

The new R&S RT-ZHD high voltage differential probes are ideal for measurements on modern power semiconductors. With a bandwidth of up to 200 MHz, they can even measure very fast switching edges. The excellent common mode rejection across the entire frequency range effectively suppresses fast-switching common mode signals. There are four different models with maximum peak voltages from 750 V to 6000 V.

Up to 2000 V offset compensation

The integrated offset compensation operates independently of probe attenuation and the oscilloscope’s vertical settings. This makes it possible to measure even very small ripple voltages with a large DC component. Thanks to an offset compensation of up to 2000 V, the R&S RT-ZHD probes cover a very large range of measurement applications.

Highest DC measuring accuracy

At ± 0.5 percent, the R&S RT-ZHD high-voltage differential probes have the best DC measuring accuracy on the market. The probes also feature an integrated R&S ProbeMeter that measures DC offset with ± 0.1 percent accuracy. The readings are displayed directly on the oscilloscope.

Full integration eliminates errors

Complete integration of the R&S RT-ZHD probes into the user interface of Rohde & Schwarz oscilloscopes eliminates erroneous readings. The oscilloscopes automatically recognize the configured attenuation factor as well as all other probe settings, so they always display the correct voltages and reliably detect incidents such as overvoltage. Probe functions can also be accessed via the SCPI remote control interface, making the probes a good choice for automated tests. The R&S RT-ZHD probes are compatible with both the new R&S RTM3000 and R&S RTA4000 embedded oscilloscopes as well as the Windows-based R&S RTE1000 and R&S RTO2000 oscilloscopes.

R&S RT-ZD002/-ZD003: when 25 MHz bandwidth is sufficient

Two other new additions are the R&S RT-ZD002 and R&S RT-ZD003 differential probes with maximum input voltages up to 700 V and 1400 V, respectively. These 25 MHz probes boast very low inherent noise for their class of around 7 mV (RMS) and 14 mV (RMS), respectively. Their BNC interface makes them a perfect fit for R&S RTC1000, R&S RTB2000 and all standard oscilloscopes.

High-performance portfolio for power electronics measurements

These new probes enhance the Rohde & Schwarz portfolio for power electronics measurements. The new R&S RT-ZHD and R&S RT-ZD002/-ZD003 high voltage differential probes and the R&S RT-ZPR40 power rail probe are now available from Rohde & Schwarz.


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