Teradyne

About: Teradyne is a company organization based out in Boston, Massachusetts, United States. It is known for research contribution in the topics: Signal & Automatic test equipment. The organization has 828 authors who have published 999 publications receiving 15695 citations.

Dual sine-wave time stamp method and apparatus

Abstract: A time of an event can be determined by acquiring an amplitude, at the time of the event, of at least two periodic timing signals that are out of phase with each other. The time of the event within a cycle of at least one of the timing signals can be determined as a function of the amplitudes of the timing signals. The phase angle and complex coordinates of at least one of the timing signals can be determined as a function of the amplitudes. The time of the event within a cycle of a timing signal can be determined as a function of the phase angle or complex coordinates of the timing signal at the time of the event.

ATML capabilities explained

Abstract: This paper describes the major concepts of ATML Capabilities and how they are used to describe instrument performance and capabilities, using simple examples and use cases. The paper leads the user through a simple set of increasingly complex problems, at each step describing instrument and test system capabilities in a standard and reusable manner. The paper takes the form of a tutorial, posing and solving increasingly complex instrument description capabilities, with each step clearly explained and defined. Each step concentrates on a particular feature of the ATML capability standard, and each step shows how real world complex systems can be described though a methodical and consistent process. Finally the paper considers the impact that ATML capabilities could have on the test industry as a whole, and offers some real and tangible benefits that may be achieved by the adoption of ATML capabilities by the industry as a whole.

High speed, high density connector for electronic signals

Abstract: A connector for printed circuit boards. Electrical connections are made between two printed boards (102,104) through flex circuits (126) which have contact pads pressed against contact pads on each of the printed circuit boards. Sufficient, uniform pressure is maintained on the contacts through the use of compressible tubes (226) behind the contact pads on the flex circuits. The compressible tubes are spring (222) biased towards the flex circuits. When a circuit board is engaged in the connector, it compresses the compressible tube and the spring biasing mechanism (222), thereby generating sufficient contact force. The connector is easy to manufacture in a variety of sizes because its pieces are modular (232). Many of the pieces are of uniform cross section, facilitating use of low cost extrusion operations. An embodiment is disclosed in which one printed circuit board is pivoted into contact with the contact pads.

Differential active load

Abstract: A programmable active load is adapted for use with differential signals. The differential active load includes a diode quad having four terminals. A first programmable current source is connected to the first node and a second programmable current source is connected to the second node. The third and fourth nodes are respectively adapted to receive first and second differential signals of a differential pair of signals. The differential active load sources current to the more negative of the first and second differential signals, and sinks current from the more positive of the first and second differential signals.

Onboard execution of flight recorder application

Abstract: An apparatus in an example comprises an onboard controller and a flight recorder application. The onboard controller is onboard a vehicle and comprises an onboard operating system (OS). The flight recorder application is executable onboard the vehicle by the onboard operating system.