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Rohde & Schwarz introduces a probe with very large offset range

The RT-ZPR20 is an extremely low-noise power rail probe with a bandwidth of 2 GHz. Developed by Rohde & Schwarz its 1:1 attenuation ensures very good sensitivity and a large offset range of ± 60 V permits analysis of the smallest disturbance signals during power integrity measurements, even on DC power supplies with a high voltage level.

The quality of the power supply is a key factor in the functionality and performance of sensitive electronic circuits and disturbance signals on the DC power supply network can lead to EMC problems or impair the functioning of a circuit. This is particularly critical for Internet of Things (IoT) components with fast digital interfaces, as well as for fast memory chips and highly sensitive analogue circuits.

The RT-ZPR20’s 2 GHz bandwidth ensures that even very broadband disturbance signals are captured and its low inherent noise and attenuation factor means that the probe enables highly sensitive measurements.

Users can also measure and analyse in detail even small disturbance voltages using the many functions offered by the company’s oscilloscopes, such as spectral analysis. With a dynamic range of ± 850 mV and a large DC voltage offset range of ± 60 V, the scope of applications is very large.

The RT-ZPR20 also features an integrated high-precision DC voltmeter that allows users to simultaneously measure a power supply's DC component, irrespective of the offset voltage. This reading and the signal voltage are transmitted to the oscilloscope and displayed. This allows the DC level and ripple to be measured in parallel when qualifying power supplies for highly sensitive electronic components such as CPUs and FPGAs. Users will be able to see at a glance whether the ripple voltages lie within the often very tight power supply tolerances.

Author
Neil Tyler

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