Agilent/Keysight N2804A

The Agilent/Keysight N2804A is a 300 MHz differential probe engineered for floating signal measurements on high-speed power systems, vehicle bus architectures, and digital designs. Powered directly by the oscilloscope's AutoProbe interface, it enables safe measurements on earth-grounded instruments without requiring external power supplies.

Technical Specifications

• Bandwidth: 300 MHz (without extension leads)


• Attenuation Ratio: 100:1


• Rise Time (calculated): 1.167 ns


• Differential Input Resistance: 4 MΩ


• Input Capacitance: 4 pF


• Common Mode Rejection Ratio (CMRR): >70 dB at 1 MHz


• Maximum Differential Operating Voltage: ±300 V (DC + peak AC) / ±200 Vrms


• Common Mode Voltage: ±1000 V


• Measurement Category: CAT II

Key Features

• AutoProbe interface integration - power supplied directly from compatible Keysight oscilloscopes


• 100:1 attenuation reduces channel loading on high-impedance circuits


• High common-mode voltage rating (±1000 V) for industrial and automotive applications


• 4 pF input capacitance minimizes probe loading on sensitive RF and high-speed digital signals


• Includes 30 cm extension leads, alligator clips, pincer clips, and trimmer tool

Typical Applications

• High-speed power delivery measurements and transient analysis


• CAN/LIN automotive bus monitoring and diagnostics


• Floating-node measurements in three-phase systems and motor drives


• High-speed digital signal characterization with minimal capacitive loading

Compatibility & Integration Designed for oscilloscopes with 50 Ω AutoProbe-interface channel inputs. Compatible with Keysight 3000T/4000X/6000X/9000/S-Series, InfiniiVision, and Infiniium Series oscilloscopes. Operating temperature range: +5 °C to +40 °C. Non-operating temperature range: –30 °C to +70 °C. Maximum operating altitude: 2,000 m.