The Keysight N2778A is a multi-mode socketed head accessory for InfiniiMode differential active probes, enabling direct connection to 0.1-inch (2.54 mm) header pins on populated circuit boards. Each package contains three socketed tips engineered with integrated damping resistors to maintain flat frequency response across the rated bandwidth. The accessory optimizes differential measurements by connecting inputs A and B to test nodes, supporting bandwidth up to 1.5 GHz with the N2750A probe and up to 3 GHz with the N2751A or N2752A probes.
Technical Specifications
• Connector Type: 0.1-inch (2.54 mm) header pin interface
• Bandwidth: Up to 1.5 GHz (with N2750A); up to 3 GHz (with N2751A, N2752A)
• Package Contents: Three socketed tips per unit
• Frequency Response: Flat across rated bandwidth via integrated damping resistor
– Key Features
• Direct socketed connection eliminates need for conventional probe tips or adapters
• Damping resistor network ensures signal fidelity without peaking or ringing
• Optimized for differential mode operation
• Suitable for high-density board layouts and surface-mount component access
– Typical Applications
• Differential signal acquisition on unpopulated header pins
• In-circuit debugging and signal integrity verification
• High-speed digital design characterization
• Direct probing of point-to-point differential nets
– Compatibility & Integration
The N2778A interfaces directly with Keysight InfiniiMode N2750A, N2751A, and N2752A differential active probes. Probe bandwidth selection determines maximum operating frequency; bandwidth is not limited by the socketed head itself.
