Agilent Technologies N4851A Serial Acquisition Probe Logic AnalyzerAgilent N4851A Serial Acquisition Probe (Logic Analyzer Probe) The Agilent N4851A is a high speed serial acquisition probe designed to interface differential serial communication lines with Agilent logic analyzer systems. It enables precise, low noise capture of high speed serial data streams, supporting accurate protocol decoding, timing correlation, and signal integrity analysis. Optimized for digital development and validation workflows, the probe