The Keysight N2878A is a general-purpose passive probe accessory kit engineered to extend the measurement capability and signal access range of N2870A Series passive probes. This kit delivers a complete set of connectivity, positioning, and grounding components designed to support probing applications up to 1.5 GHz while minimizing loading effects on the device under test.
Technical Specifications
The N2878A supports N2870A Series probes with bandwidths up to 1.5 GHz. Included accessories span multiple connector types and IC lead pitches to accommodate diverse circuit topologies. Ground connectivity is provided via a 15 cm ground lead and integrated ground spring. The kit features five rigid probe tips and self-adhesive copper pads (set of 10) for flexible signal routing.
– Key Features
• IC contact caps with five lead pitch options: 0.5 mm, 0.65 mm, 0.8 mm, 1.0 mm, and 1.27 mm spacing
• BNC probe tip adapter (2.5 mm) for standard oscilloscope termination
• Ground blade and sprung hook (both 2.5 mm) for clip-on grounding
• N2786A two-leg probe positioner for stable hands-free probe placement
• 12 color-coded identification rings (3 each of 4 colors) for channel marking
• Insulating and protection caps to prevent accidental contact
– Typical Applications
The N2878A excels in signal browsing and general-purpose troubleshooting of differential circuits. It supports solder-in applications for semi-permanent test connections and accommodates fine-pitch IC probing. The kit also serves as a replacement accessory set for standard components supplied with N2870A Series probes.
– Compatibility & Integration
The N2878A is designed exclusively for use with the Keysight N2870A Series passive probes. These probes integrate with Keysight InfiniiVision and Infiniium Series oscilloscopes, many featuring automatic Probe ID recognition for enhanced measurement accuracy and traceability.

















