Teradyne, Inc.

Charles M Sweet

Cameron Dee Dryden

David Walter Lewinnek

An apparatus and process for measuring, testing, and/or characterizing high-speed bit streams includes repeating a serial bit steam and repetitively undersampling the repeated bit stream at a plurality of timing locations. Samples for each timing location are separately accumulated, and accumulated values are examined to determine the probability of the bit stream being high or low at each timing location. Identification of a periodic bit stream as well as measurement of jitter and other timing characteristics can then be measured.

High speed capture and averaging of serial data by asynchronous periodic sampling

A probe tower for an automatic test system includes an insulative retainer for holding an array of differential probe assemblies. Each differential probe assembly is an elongated structure having first and second ends and first and second coaxial portions. Each coaxial portion includes an outer conductor and a pair of annular insulators positioned therein for holding a center conductor. First and second contact pins extend from the center conductor at the first and second ends, respectively. First and second ground pins, which are electrically connected to the outer conductors of the first and second coaxial portions, extend from the first and second ends for conveying ground connections.

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Newtonville, MA, United States of America

Charles M Sweet