Agilent/Keysight N2751A

The Keysight N2751A is an InfiniiMode active differential probe for Keysight InfiniiVision and Infiniium series oscilloscopes equipped with AutoProbe interface. It acquires differential, single-ended, and common mode signals through a single probe tip, eliminating manual reconfiguration between measurement types. The probe delivers 3.5 GHz bandwidth with 100 psec rise time, making it suitable for digital system design, component characterization, and serial bus measurements.

Technical Specifications

• Bandwidth: 3.5 GHz


• Rise time: 100 psec Measurement Modes & Dynamic Range


• Differential (A – B), single-ended A, single-ended B, common mode ((A+B)/2 – ground)


• Dynamic range at 10:1 attenuation: ±5 V or 10 Vpp


• Dynamic range at 2:1 attenuation: ±1 V or 2 Vpp


• Attenuation: 2:1 or 10:1 (switchable, auto-configured by input signal size) Input Specifications


• DC offset range: ±15 V


• Maximum input voltage: 30 V DC + peak AC


• Differential input resistance: 200 kΩ


• Single-ended input resistance: 100 kΩ


• Common mode input resistance: 50 kΩ


• Input capacitance: 700 fF (with browser tip)

Key Features

• AutoProbe interface enables automatic probe configuration and power delivery


• Switchable attenuation with signal-dependent auto-configuration


• Integrated white LED headlight to illuminate circuit under test


• Quick action scope control button for RUN/STOP, auto scale, print, and save functions


• Multiple tip options: differential browser tips, InfiniiMode solder-in tips, and InfiniiMode socketed tips (qty 2 each included)

Compatibility & Integration The N2751A operates with Keysight InfiniiVision and Infiniium Series oscilloscopes featuring AutoProbe interface. Specifically compatible with Infiniium 9000A/H Series (software version 4.2 or higher) and Infiniium S Series (software version 5.0 or higher). Note: Infiniium 80000 Series requires InfiniiMax probes instead.