The RIGOL RP1025D, RP1050D and RP1100D are powered high-voltage differential probes that convert high differential voltages into low-voltage signals suitable for oscilloscope display. They enable waveform measurement between two circuit points while providing high input impedance and common-mode rejection.
The three models cover bandwidths from DC–25MHz to DC–100MHz. Multiple attenuation settings support measurements ranging from lower-voltage control circuits to high-voltage inverter, motor-drive and power-conversion systems.
Model Differences & Selection
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RP1025D – Lower-voltage power electronics: Provides DC–25MHz bandwidth with 20X, 50X and 200X attenuation. Its maximum differential input is 1400Vpp, 500Vrms or 500VDC. Select it for power supplies, mains-related measurements and converters that do not require the higher voltage capacity of the RP1050D or RP1100D.
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RP1050D – High voltage with 50MHz bandwidth: Provides DC–50MHz bandwidth, 100X to 1000X attenuation and a maximum differential input of 7000Vpp, 2300Vrms or 2300VDC. It suits high-voltage inverters, industrial drives and power converters where voltage capacity is more important than 100MHz bandwidth.
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RP1100D – High voltage with faster edge capture: Retains the 7000Vpp maximum differential input and 100X to 1000X attenuation of the RP1050D while increasing bandwidth to DC–100MHz. Choose it for faster switching devices, gate-drive analysis and high-frequency power-conversion waveforms.
The RP1050D and RP1100D provide the same principal voltage ranges. The purchasing decision between them is therefore based primarily on bandwidth: 50MHz for general high-voltage power testing or 100MHz for faster switching edges and shorter transient events.
Key Features
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True differential measurement: Measures voltage between two circuit points without connecting either test lead directly to the oscilloscope ground.
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Up to 7000Vpp differential input: Supports high-voltage measurements in industrial power-conversion and drive systems with the RP1050D and RP1100D.
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Up to 100MHz bandwidth: The RP1100D captures faster switching transitions and transient behavior.
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Selectable attenuation: Multiple ranges allow the probe output to be matched to the signal amplitude and oscilloscope input.
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±2% accuracy: Provides consistent amplitude measurements under the specified operating conditions.
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High input impedance: Reduces loading on high-voltage circuits and switching nodes.
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Common-mode rejection above 50dB: Suppresses voltage common to both inputs at the specified test frequencies.
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Overload indicator: Provides a visible warning when the selected attenuation range is exceeded.
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Standard BNC output: Connects to general-purpose oscilloscopes through the supplied 50Ω coaxial cable.
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External 9VDC power: The supplied adapter supports continuous laboratory and production use.
Typical Applications
- Switching power-supply development
- Inverter input and output measurements
- Motor-drive and variable-frequency drive testing
- IGBT, MOSFET and SiC switching waveform analysis
- Gate-driver and floating-node measurements
- DC bus and power-converter testing
- Industrial power equipment maintenance
- Electronic ballast and lighting-system diagnostics
- Renewable-energy and energy-storage power systems
Attenuation and Oscilloscope Input
The marked attenuation ratios apply when the oscilloscope input impedance is set to 1MΩ. If the probe is connected to a 50Ω oscilloscope input, the effective attenuation ratio doubles. For example, a marked 200X setting operates as 400X with a 50Ω input.
Matching the oscilloscope probe setting to the effective attenuation ratio allows the displayed vertical scale to represent the actual differential voltage.
Measurement Performance
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RP1025D: DC–25MHz bandwidth, 14ns rise time and 4MΩ differential input resistance
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RP1050D: DC–50MHz bandwidth, 7ns rise time and 16MΩ differential input resistance
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RP1100D: DC–100MHz bandwidth, 3.5ns rise time and 16MΩ differential input resistance
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Accuracy: ±2%
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Output impedance: 50Ω
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Common-mode rejection: greater than 50dB at 60Hz, 100Hz and 1MHz
Safety and Voltage-to-Ground Limits
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RP1025D maximum voltage to ground: 240Vrms
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RP1050D maximum voltage to ground: 1200Vrms
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RP1100D maximum voltage to ground: 1200Vrms
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Safety classification: CAT III, Pollution Degree 2
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Insulation: Double insulation
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Operating environment: Indoor use
The effective voltage limit is determined by the lowest rating of the probe, attenuation setting, test leads, clips and connected instrument. The high-voltage IC clips supplied with the RP1050D and RP1100D are rated up to 6500Vpp.
Package Contents
- RP1025D, RP1050D or RP1100D differential probe
- AC power adapter for the destination country
- 100cm dual-BNC 50Ω coaxial cable
- Red and black 60cm silicone test leads
- Red and black measurement clips
- Chinese and English user guide
The RP1050D and RP1100D include dedicated high-voltage silicone leads and high-voltage IC clips. The RP1100D additionally includes red and black CAT III contact probe rods.
Why Choose the RIGOL RP1000D Series?
The RP1000D Series provides a practical choice of voltage range and bandwidth for high-voltage differential measurements. The RP1025D covers lower-voltage power applications, the RP1050D extends the range to 7000Vpp, and the RP1100D combines the same voltage capacity with 100MHz bandwidth for faster switching technologies.
