The Keysight N2782B AC/DC Current Probe delivers simultaneous AC and DC current measurement from milliampere to 30 A RMS levels with DC to 50 MHz bandwidth. Its hybrid architecture combines Hall-effect sensing and AC current transformation, enabling flat frequency response and low insertion loss across the measurement range. The split-core design clips onto conductors without circuit interruption, while the 7 ns or less risetime captures fast transient events. Amplitude accuracy of ±1.0% ±10 mA and high signal-to-noise ratio make this probe suitable for precision current analysis in power electronics, motor drive characterization, and low-level load profiling. The probe outputs 0.1 V/A and connects via BNC plug directly to oscilloscope high-impedance inputs. Built-in demagnetize, zero adjust, and overload protect functions simplify field operation and extend probe life. External power supply required (e.g., N2779A for up to three probes). Handles wire sizes to 5 mm and input voltages to 300 V CAT1.
Technical Specifications
• Bandwidth: DC to 50 MHz
• Risetime: ≤7 ns
• Maximum continuous current: 30 A RMS
• Maximum peak current: 50 A (non-continuous)
• Minimum measurable current: 5 mA
• Amplitude accuracy: ±1.0% of reading ±10 mA
• Output sensitivity: 0.1 V/A
• Wire size compatibility: Maximum 5 mm
• Maximum input voltage: 300 V (CAT1)
• Input coupling: AC/DC
• Frequency response: Flat
– Key Features
• Hybrid Hall-effect and AC transformer technology for combined AC/DC measurement
• Split-core clamp-on construction for non-intrusive circuit connection
• Demagnetize button to clear residual magnetic core buildup
• Zero adjustment control for offset and thermal drift correction
• Overload protection against excessive input signals
• High signal-to-noise ratio for milliampere-range sensitivity
• Low insertion loss
– Typical Applications
• Power supply and converter characterization
• Motor and drive current analysis
• Low-level load profiling and efficiency testing
• Transient current capture in switching circuits
• AC ripple and DC bias separation
– Compatibility & Integration
Connects via BNC plug to 1 MΩ high-impedance oscilloscope inputs on Keysight 1000, 2000 X-, 3000 X-, 4000 X-, 5000, 6000, 7000, 8000, and 9000 Series instruments. For 50 Ω input settings on select Infiniium models, use Keysight E2697A or N5449A adapters. Requires external power supply; N2779A universal supply accommodates up to three N278xB probes.
