The ADP30X are high-voltage active differential probes designed for safe, easy measurement of power electronics. The series comprises two models — the ADP300 and the ADP305 — both built to bring elevated and floating voltage signals safely into an oscilloscope's input.

The ADP300 is suited to troubleshooting low-frequency power devices and other circuits where the reference potential is elevated from ground, or where the location of ground is unknown. The ADP305 is designed for measuring the high-speed floating voltages found in modern power electronics. A differential probe lets an engineer measure the voltage between two points without referencing either to earth ground, which is essential when neither node sits at ground potential.

ValueTronics holds and stocks its own inventory in a 20,000 square foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every pre-owned order is fulfilled directly from that facility; used units are inspected and functionally verified in-house by qualified technicians before they ship, while new units ship factory-sealed exactly as received.

Brand Heritage

LeCroy Corporation was acquired by Teledyne Technologies in 2012 and has operated under the Teledyne LeCroy name since. The probes are produced under that brand.

Compare Other Models in This Series

The ADP30X family consists of two high-voltage active differential probes that share a common safety envelope: a 1,400 V peak differential voltage rating, a 1,000 VRMS common-mode voltage rating, EN61010 Category III compliance, and 80 dB of CMRR at 50/60 Hz. Both connect to the oscilloscope through the ProBus system, draw power from the scope, and support full remote control of attenuation, offset, and bandwidth limit.

The two models are separated primarily by bandwidth and the measurement task each targets. The ADP300 addresses low-frequency power devices and circuits with an elevated or unknown ground reference, while the ADP305 is built for the high-speed floating voltages of modern power electronics.

Each model below is its own dedicated product page with pre-owned-matched pricing. Select the model that fits your bandwidth and measurement requirement, then choose the condition and configuration on that model's page.

The ADP300 provides 20 MHz bandwidth and a sensitivity range of 1 V/div to 350 V/div, with a maximum slew rate of 60,000 V/µs referenced to input. The ADP305 provides 100 MHz bandwidth, a sensitivity range of 200 mV/div to 350 V/div, and a maximum slew rate of 300,000 V/µs referenced to input.

The headline difference between the models is bandwidth: 20 MHz on the ADP300 versus 100 MHz on the ADP305. This is accompanied by a higher maximum slew rate on the ADP305 (300,000 V/µs versus 60,000 V/µs, referenced to input) and a finer low-end sensitivity (200 mV/div versus 1 V/div), reflecting its focus on high-speed floating voltage measurements.

The shared specifications — 1,400 V peak differential, 1,000 VRMS common mode, Category III rating, ÷100/÷1000 attenuation, and ProBus control — are identical across both. Standard accessory bundles differ by model; see each model's row in the comparison table that follows for the bandwidth, slew rate, and sensitivity values.

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

Accessories Supplied

• All ADP300 Accessories
• Safety Spade (1-Red, 1-Blue)
• Plunger Clamp Clip (1-Red, 1-Blue)
• Plunger Jaw Clip (1-Red, 1-Blue)
• Safe Alligator Clip (1-Red, 1-Blue)
• Soft Accessory Case

Product Core & Specifications

Important: Maximum differential voltage: 1,400 V peak. Maximum common-mode voltage: 1,000 VRMS (EN61010 Category III).

Important: The ADP30X probes are powered by the oscilloscope through the ProBus interface; attenuation, offset, and bandwidth limit are controlled from the oscilloscope front panel or by remote control. A compatible ProBus-equipped oscilloscope is required for operation (no separate power supply or batteries are used).

Recommended pairing: choose the appropriate PK30X connection accessory set — plunger hook (PK30X-1), safety alligator (PK30X-2), plunger jaw (PK30X-3), plunger clamp (PK30X-4), or safety spade (PK30X-5) — from the ordering information to match your test points.

About this Pre-Owned unit

This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.

• Warranty included
• Functional verification included
• Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
• Note that unnecessary accessories may not be included (contact Test Architect to confirm).

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.