Agilent/Keysight N2783B

The Agilent/Keysight N2783B is a current probe for non-intrusive AC and DC current measurement across power electronics and switching power supply applications. It delivers precision analysis from DC to 50 MHz with low insertion impedance and high sensitivity in the mV/A range, maintaining circuit integrity while capturing accurate waveforms. The probe connects directly to oscilloscopes via BNC output, accommodating various conductor geometries including bus bars and individual wires.

Technical Specifications

• Current Range: DC and AC RMS up to 50 A


• Bandwidth: 50 MHz (DC to 50 MHz)


• DC Accuracy: ±2% of reading + 10 mA


• AC Accuracy: Varies with frequency and current level


• Sensitivity: mV/A range for high-resolution small-signal measurement


• Insertion Impedance: Low, minimizing circuit loading


• Output: BNC connector for direct oscilloscope integration


• Attenuation: Selectable ratios to match instrument input ranges and current levels


• Noise Floor: Low for reliable small-signal detection

Key Features

• Wide 50 MHz bandwidth enables capture of fast transients and harmonic content


• Selectable attenuation accommodates diverse current levels without range switching


• BNC output provides universal compatibility with modern test instrumentation


• Non-intrusive measurement topology preserves circuit operation and performance


• Rugged construction rated for laboratory and field deployment

Typical Applications

• Power electronics characterization


• Switching power supply analysis and optimization


• Transient current measurement in analog and digital circuits


• Harmonic and EMI assessment to 50 MHz

Compatibility & Integration The N2783B integrates with any oscilloscope or data acquisition system accepting BNC inputs at appropriate voltage levels. Spectrum analyzers with BNC front-end inputs support extended frequency-domain analysis of captured current waveforms.