Probe has offset range for power integrity measurements

Described as a low-noise power rail probe, the RT-ZPR20 from Rohde & Schwarz has a large offset range, a DC voltmeter for power integrity measurements and operates at 2GHz.

The 1:1 attenuation also ensures very good sensitivity. The large offset range of ±60V 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. 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 IoT components with fast digital interfaces, as well as for fast memory chips and highly sensitive analogue circuits.

The RT-ZPR20 power rail probe is designed to assess the quality of the power supply and power integrity measurements in combination with the company’s RTE and RTO2000 oscilloscopes. According to the company, the 2GHz bandwidth ensures that even very broadband disturbance signals are captured.

The low inherent noise and an attenuation factor of 1:1 enables highly sensitive measurements. Users can measure and analyse in detail even small disturbance voltages using the functions on the company’s oscilloscopes, such as spectral analysis. The dynamic range is ±850mV and DC voltage offset range is ±60V.

The RT-ZPR20 also features an integrated 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 for display. 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 can see at a glance whether the ripple voltages lie within, what can be, very tight power supply tolerances.

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