Agilent/Keysight N2825A

The Keysight N2825A is a user-defined resistor tip accessory that extends the measurement capabilities of the N2820A and N2821A high-sensitivity current probes. This head accepts user-selected sense resistors mounted directly on the Device Under Test, enabling customized current measurement setups without a fixed resistor value. Users select sense resistor values from 1 mΩ to 1 MΩ and input the chosen value into the oscilloscope to achieve accurate current calculations.

– Technical Specifications

Sense Resistor Range:
• 1 mΩ to 1 MΩ (user-selected)

Bandwidth (of associated N2820A/N2821A probes):
• Zoom-Out Channel: DC to 3 MHz
• Zoom-In Channel: DC to 500 kHz

Measurement Capability Examples:
With 1 mΩ sense resistor (500 mW power rating):
• Minimum measurable current: 5 mA
• Maximum measurable current: 5 A

With 1 kΩ sense resistor (500 mW power rating):
• Minimum measurable current: 500 nA
• Maximum measurable current: 1.2 mA

– Key Features

• Bare head design—no integrated resistor included
• Quick-connect Make-Before-Break connectors for multi-point probing without circuit interruption
• Dual-channel zoom capability for simultaneous low- and high-gain measurement views
• Sense resistor value configurable via oscilloscope interface

– Compatibility & Integration

The N2825A integrates exclusively with Keysight N2820A (2-channel) and N2821A (1-channel) high-sensitivity current probes. Both probes feature the AutoProbe interface for direct oscilloscope connection. Compatible oscilloscopes include InfiniiVision 3000 X-Series, 4000 X-Series, and Infiniium S-Series models. Legacy Infiniium V, 9000A, 90000 X-, and 90000 Q-Series oscilloscopes do not support these probe systems.