18-GHz Differential TDR Probe Kit from Agilent

The Agilent N1021B 18-GHz differential TDR probe kit connects printed circuit boards and other devices without connectors to the 54754A differential TDR/TDT module in the 86100C Infiniium DCA-J wideband oscilloscope mainframe. In conjunction with these hardware components, engineers can use the optional 86100C-202 enhanced impedance and S-parameter software to accurately characterize differential impedances in the time and frequency domains (for example, reflections and impedances versus time or distance, or magnitude/phase/group delay of S-parameters like SDD11/SDD21).

The probe's flexible cables and its light, ergonomic design make it comfortable for engineers to use, even when they are probing for extended periods. Its slim body and the extended tips provide good visibility of the target, and a thumb wheel allows pitch adjustments with just one hand. Hardened tips ensure many touchdowns, and the chamfered design makes good contact, even on small pads or traces.

The move in recent years to higher bit rates on server backplanes and consumer electronics has forced designers and manufacturers to test more physical properties, said Scott Sampl, vice president and general manager of Agilent's oscilloscope business. The 86100C Infiniium DCA-J, with its signal and impedance analysis capabilities, has become an essential tool for ensuring interoperability of new designs and consistent quality in manufacturing. The new TDR differential probe complements Agilent's already broad offering in signal integrity applications by bridging the gap between calibrated, precision coaxial-based instruments and real-world devices without connectors.

The N1021B kit consists of all components necessary to make accurate measurements - an ergonomically designed probe body with variable pitch, a flexible yet microwave-grade matched cable pair, shorts and loads for calibration, and even an ESD wrist strap.