Agilent/Keysight 1146A

The Agilent/Keysight 1146A is an AC/DC current probe that measures current from 100 mA to 100 A rms without breaking the circuit. Based on Hall-effect technology, it delivers accurate AC and DC measurements across a DC to 100 kHz bandwidth and withstands up to 600 Vrms CAT II. The probe offers two sensitivity ranges - 100 mV/A for 100 mA to 10 A peak and 10 mV/A for 1 A to 100 A peak - with AC accuracy of ±3% to ±4% of reading above 50 mA, and ±15% maximum at 100 A peak.

Technical Specifications

• Current Range: 100 mV/A setting measures 100 mA to 10 A peak; 10 mV/A setting measures 1 A to 100 A peak; minimum measurable current 100 mA


• Bandwidth: DC to 100 kHz at -3 dB with current derating


• AC Accuracy: ±3% of reading ≥ 50 mA (100 mV/A range); ±4% of reading ≥ 50 mA (10 mV/A, 500 mA to 40 A); ±15% maximum at 100 A peak


• Working Voltage: 600 Vrms CAT II maximum


• Floating Voltage: 600 Vrms CAT II maximum


• Phase Shift: < 1.5° (DC to 65 Hz)


• Noise: 480 µV


• Rise/Fall Time: 3 µs


• Insertion Impedance: 0.01 Ω at 50/60 Hz


• Influence of Adjacent Conductor: < 0.2 mA/A AC


• Battery Life: 55 hours typical (9V alkaline, 8.6 mA consumption)

Key Features

• Hall-effect sensor technology for simultaneous AC and DC measurement


• Dual sensitivity ranges eliminate range switching for most applications


• Overload (OL) and low battery indication via LED


• 2 m insulated coaxial cable with insulated BNC connector


• Compact design: 231 mm × 36 mm × 67 mm; 330 g with battery


• Maximum conductor diameter: 11.8 mm


• IP20 protection; rated for 1.0 m drop test on 38 mm oak over concrete


• Operating temperature 0°C to 50°C; storage -30°C to 80°C

Typical Applications

• Power supply and battery charger testing


• Motor and variable frequency drive analysis


• Load profiling and consumption monitoring


• Fault current detection in distribution systems

Compatibility & Integration Connects directly to oscilloscopes with BNC input and ≥1 MΩ input impedance. Compatible with Agilent/Keysight 1000, 3000, 5000, 6000, 7000, 8000, 9000, 80000 (requires E2697A), and 90000 series (requires E2697A).