The Keysight N2790A is a 100 MHz high-voltage differential probe engineered to measure differential signals safely in high-voltage environments where neither measurement point is at ground potential. It enables standard earth-grounded oscilloscopes to capture floating differential measurements across power electronics, automotive systems, and industrial motor drives without compromising signal integrity or operator safety.
Technical Specifications
• Bandwidth: ≥100 MHz
• Maximum Differential Operating Voltage: ±1,400 VDC + peak AC at 500:1 attenuation; ±140 V at 50:1 attenuation
• Maximum Common Mode Voltage: 1,000 V
• Common Mode Rejection Ratio: >50 dB at 1 MHz
• Attenuation Settings: User-selectable 50:1 or 500:1
• Rise Time: ≤3.5 ns
• Input Resistance: 8 MΩ
• Input Capacitance: 3.5 pF
• Cable Length: 70 cm
• Operating Temperature Range: −10 to +50°C (−40 to +85°C with N7013A/N7014A extension kit)
– Key Features
• Overrange indicator alerts when probe input exceeds dynamic range
• AutoProbe interface with oscilloscope-supplied power
• Safety rated to 1,000 Vrms CAT II and 600 Vrms CAT III between inputs and earth ground
• Supplied probe tips rated for 1,000 Vrms CAT II and 600 Vrms CAT III operation
• Interchangeable measurement tips: standard browser, retractable hook, and alligator clip configurations
– Typical Applications
Power electronics testing, automotive high-voltage measurement, industrial motor drive analysis, and floating signal acquisition in complex electrical systems.
– Compatibility & Integration
Direct AutoProbe compatibility with Keysight InfiniiVision 3000/4000 X-Series, InfiniiVision 5000/6000/7000 (software 5.26.0001+), Infiniium S/V/Z-Series, 90000 X/Q-Series (with N5449A adapter), 8000/54830 Series (software 5.7), 9000 Series (software 2.0), and Infiniium EXR Series.
