LeCroy ADP300 High-Voltage Differential Probe, 1400 V, 20MHz

The LeCroy ADP300 is a high-voltage active differential probe engineered for precision measurement of elevated voltage potentials in power electronics and industrial test environments. It delivers 20 MHz bandwidth with 1400 V peak differential voltage capability and ±1000 V RMS common-mode range, making it ideal for troubleshooting circuits where ground reference is elevated or unknown. Attenuation (100X or 1000X) is automatically selected by the oscilloscope.

The probe integrates directly with compatible Teledyne LeCroy instruments via the ProBus system, which supplies power, handles communication, and enables complete front-panel or remote control of measurement parameters.

Technical Specifications

Bandwidth & Voltage Performance

• Bandwidth: 20 MHz


• Differential voltage range: 1400 V peak


• Common-mode voltage range: ±1000 V RMS CAT III


• Input impedance: 8 MΩ differential; 4 MΩ each input to ground (DC)


• Input capacitance: 8 pF each input to ground


• Maximum slew rate: 60,000 V/µs


• AC noise: 50 mVRMS


• Common-mode rejection ratio: 80 dB at 50/60 Hz (10,000:1) Measurement Accuracy


• Low-frequency accuracy: 2% (standard); 1% of reading (probe-only)


• Sensitivity range: 1 V/div to 350 V/div Physical & Environmental


• Length: 2 meters


• Input connectors: 4 mm shrouded banana plug


• Operating temperature: 0°C to 50°C


• Maximum altitude: 2000 meters


• Maximum relative humidity: 80% (non-condensing, ≤31°C)

Key Features

• AutoZero function for probe offset zeroing via oscilloscope coupling menu


• Dual attenuation modes (100X/1000X) with automatic selection


• ProBus integration eliminates external power supplies and batteries


• Full remote control capability with measurement setup save/recall


• EN61010 Category III compliance for fixed installations and portable equipment (CAT II)


• Automatic scope input termination to 1 MΩ with integrated probe control

Typical Applications Power electronics testing, elevated ground reference circuits, industrial power device troubleshooting, low-frequency high-voltage measurements.

Compatibility & Integration ProBus-equipped Waverunner and LC series oscilloscopes including LC Series, LT Series, WS 400 Series, WS Xs Series, WR6000(A) Series, WR Xi Series, WP 900 Series, and WP7000(A) Series.