• General purpose, switchable attenuation, low-cost passive probe
• Bandwidth: 350MHz (10:1); 10MHz (1:1)
• Attenuation ratio: 10:1 / 1:1
• Input impedance: 10 MΩ // 11 pF (10:1); 1 MΩ // 60 pF + (1:1)
• Input capacitance: 11 pF (10:1); 10 pF (1:1) 

The Keysight N28xxA/B low-cost, general-purpose passive probes provide up to 500 MHz bandwidth and feature a high input resistance of 10 MΩ for low probe loading. These probes provide a 10:1 attenuation ratio except for the N2889A which provides a switch in the probe handle for switching the attenuation ratio between 1:1 and 10:1. The probes are compatible with Keysight InfiniiVision and Infiniium Series oscilloscopes with 1 MΩ BNC input.

These probes can be adjusted for low-frequency and high-frequency compensation. For the best measurement results, you should compensate your probe to match its characteristics to the oscilloscope. A poorly compensated probe can introduce measurement errors. Low-frequency compensation should be performed before performing high-frequency compensation.

The N284xA Series passive probes are the frequency-tuned versions of the N2862B/63B/89A/90A, offering more linear frequency response with Keysight oscilloscopes.