Keysight (Agilent) N2783B AC/DC Current Probe, 100 MHz, 30 ARMS

The Keysight N2783B is an AC/DC current probe that measures both steady-state and transient currents without breaking the circuit. Its hybrid architecture combines a Hall-effect sensor with an AC current transformer, delivering accurate readings across DC to 100 MHz. The split-core jaw accommodates 5 mm conductors, while the 1.5 m cable terminates in a BNC connector for direct oscilloscope integration.

– Technical Specifications

• Measurement Bandwidth: DC to 100 MHz
• Maximum Continuous Current: 30 ARMS
• Maximum Pulse Current: 50 A
• Minimum Measurable Current: 5 mA
• Rise Time: 3.5 ns or less
• Amplitude Accuracy: ±1.0% of reading ±10 mA
• Output Sensitivity: 10 mV/A (100:1 attenuation) or 0.1 V/A (10:1)
• Maximum Input Voltage: 300 V CAT I or 300 V CAT II
• Jaw Opening: 5 mm
• Insertion Impedance: Approximately 10 MΩ at 1 kHz
• Noise: 2.5 mARMS or less (20 MHz bandwidth filter)
• External Magnetic Field Effect: Max 20 mA
• Temperature Coefficient: ±2% or less (0°C to 40°C)
• Weight: 150 g

– Key Features

• Hybrid Hall-effect and AC transformer technology for simultaneous AC/DC measurement
• Split-core construction for non-invasive current sensing
• Demagnetize function removes residual core magnetism
• Zero adjustment compensates for voltage offset and temperature drift
• High signal-to-noise ratio enables low-level current detection
• Overload protection safeguards against excessive current

– Typical Applications

• Motor drive steady-state and transient analysis
• Power supply current profiling
• Inverter and controller measurements
• Sensor and disk drive testing
• LCD display current assessment

– Compatibility & Integration

The probe connects to any oscilloscope with a 1 MΩ BNC input, including Keysight InfiniiVision 2000X/3000X/5000/6000/7000 Series, Infiniium 8000/9000 Series, and 90000A/X-Series instruments. Oscilloscope input impedance must be configured to 1 MΩ for accuracy. An external power supply unit (N2779A) is required; it supports connection of up to three N278xB probes. The E2697A impedance adapter is available for 50 Ω input oscilloscopes.