LeCroy HVD3106 High Voltage Differential Probe, 120MHz

The LeCroy HVD3106 is a 120 MHz high-voltage differential probe engineered for precision measurement of differential signals in power electronics and high-voltage test environments. It delivers ±1500 V common-mode range, exceptional CMRR across a broad frequency spectrum, and dual attenuation modes (50x / 500x) to accommodate differential voltages from 27.6 V to 1500 V. The probe integrates via ProBus interface with Teledyne LeCroy oscilloscopes, providing automatic attenuation selection and eliminating external power requirements.

Technical Specifications

• Bandwidth: 120 MHz


• Rise Time (10–90%): 2.9 ns


• Attenuation: 50x / 500x switchable


• Gain Accuracy: 1% (DC and low frequency)


• Input Coupling: DC


• Differential Voltage Range: 27.6 V (low attenuation, ±150 V offset) to 1500 V (high attenuation, ±1500 V offset); maximum measurable 2000 Vp-p


• Common-Mode Voltage: ±1500 V (DC + peak AC)


• Input Impedance: 10 MΩ ∥ 2.5 pF (between inputs); 5 MΩ ∥ 5.0 pF (input to ground)


• Output Termination: 1 MΩ


• Slew Rate: 400 V/ns maximum


• Safety Rating: 1 kV CAT III


• Maximum Input to Earth: 1000 Vrms CAT III


• Cable Length: 2.25 m overall; input lead 40 cm

Key Features

• AutoZero calibration eliminates offset drift without probe removal


• High offset capability across both attenuation settings


• ProBus power and communication eliminates standalone power supply


• Automatic attenuation selection synchronized to oscilloscope V/div setting

Typical Applications Power electronics characterization, motor drive analysis, high-voltage switching measurements, and differential signal monitoring in systems operating at elevated common-mode potentials.

Compatibility & Integration Works with any Teledyne LeCroy oscilloscope equipped with ProBus interface and XStream software version 7.4 or greater.