Rohde and Schwarz RT-ZPR20 Power Rail Probe, 2 GHz

The Rohde & Schwarz RT-ZPR20 is a 2 GHz active power rail probe engineered for high-accuracy measurements on low-voltage power rails. It combines low noise and high bandwidth to enable detailed power integrity analysis, debugging, and characterization across complex electronic designs. The 1:1 attenuation ratio delivers high sensitivity for precise measurement of small ripple and noise signals superimposed on DC rails.

An integrated high-precision DC voltmeter with 0.1% accuracy enables simultaneous DC component measurement without additional instrumentation. The probe's ±60 V DC offset compensation range accommodates diverse power supply voltages, while its 50 kΩ input impedance minimizes loading effects on the power distribution network.

Technical Specifications

• Bandwidth: DC to 2.0 GHz


• Attenuation Factor: 1:1


• Input Impedance: 50 kΩ


• Dynamic Range: ±0.85 V


• DC Offset Compensation: ±60 V


• Maximum Input Voltage: ±0.85 V (within dynamic range, without offset compensation)


• DC Voltmeter Accuracy: 0.1%


• Coupling: AC/DC


• Cable Length: 1.2 m SMA

Key Features

• Integrated high-precision DC voltmeter eliminates need for separate measurement equipment


• Very low added noise ensures accurate ripple and noise characterization


• High sensitivity enables detection of small signal variations on power rails


• AC/DC coupling accommodates both modulated and DC-offset signals


• Power Rail Browser software included for measurement analysis

Typical Applications

• Power integrity characterization and debugging in digital electronics


• Ripple and noise analysis on low-voltage rails


• Power supply quality assessment in IoT components and memory chips


• Sensitive analog circuit power rail monitoring

Compatibility & Integration The probe connects exclusively via Rohde & Schwarz probe interface and is compatible with R&S RTE, RTO2000 series, RTM3000/RTA4000 series, MXO, and RTP series oscilloscopes. SMA connector on probe box supports accessory integration. Direct connection to standard BNC jacks is not permitted.