• High-voltage differential probe for safe, accurate floating measurements
• Bandwidth: ≥ 25MHz probe bandwidth
• Attenuation ratio: 10:1 / 100:1
• Input resistance // capacitance (between inputs): 8Mohm // 8pF
• Max differential operating voltage: +/- 700 V at 100:1; +/- 70 V at 10:1 

Oscilloscope users often need to make floating measurements where neither point of the measurement is on earth ground. Use the Keysight N2790A, N2791A, or N2891A high-voltage differential probe to make safe and accurate floating measurements with an oscilloscope. The N2790A, N2791A, and N2891A high-voltage differential probes allow conventional earth-grounded Keysight Technologies, Inc. oscilloscopes to be used for floating signal measurements.

With a differential amplifier in the probe head, the N2790A is rated to measure differential voltage up to 1,400 VDC + peak AC with a high CMRR of > 50 dB at 1 MHz. The N2791A and N2891A can measure differential voltage up to 700 V and 7 kV differential or common-mode respectively. The N2790A, N2791A, and N2891A differential probes offer sufficient dynamic range and bandwidth for your application to make the floating measurements found in power electronics circuits safely and accurately.

The Keysight N2790A, N2791A, and N2891A differential probe offer user-selectable attenuation settings that make it highly versatile, allowing it to be used for a broad range of applications. The probe comes with tip accessories for use with both small and large components in tight places. The N2790A and N2891A also have an over-range indicator that alerts the user when the probe input exceeds the dynamic range of the probe.

The N2791A and N2891A are compatible with any oscilloscope with 1 Mohm BNC input. The N2791A and N2891A probe’s power is supplied by included 4x AA batteries or USB host port of the scope or PC via a supplied USB power cable. The N2790A is compatible with the Keysight Technologies, Inc. AutoProbe interface where the probe’s power is supplied by the Keysight oscilloscope’s probe interface.

See Data Sheet in the Documents section for specifications.

Keysight N2791A

Use the Keysight N2791A 25-MHz low-cost high-voltage differential probe to make safe and accurate floating measurements with an oscilloscope. The N2791A differential probe allows conventional earth-grounded Keysight oscilloscopes to be used for floating signal measurements of up to 700 V of differential voltage and common-mode voltage. The probe is compatible with any oscilloscope with 1 MΩ BNC input. The probe power is supplied by included 4x AA batteries or USB host port of the scope or PC via a supplied USB power cable.

When probing differential signals inside of environmental chambers at extreme temperatures, Keysight offers the N7013A extreme temperature extension kit. The 70 cm long differential cable set and accessories can operate in temperatures ranging from -40 degrees to +85 degrees Celsius.