摘要:
An arrangement and method for analyzing the timing of events in a test system including a device under test and a plurality of test instruments connected together by one or more communication connections: time-stamps events in a test routine executed by the test instruments under control of a test program to generate time-stamped event data; communicates the time-stamped event data to a central processor; and processes the time-stamped data to output information about the timing of the events.
摘要:
A computer aided design apparatus performs context-sensitive modeling of a test and measurement system that includes a plurality of actual system components including instruments and interconnections therebetween. The apparatus comprises a graphical user interface; a library of models of system components, each model including a graphical representation of the system component and a definition of properties of the system component; and a system model generator for selecting and interconnecting the system components to produce a model of the system, for displaying the model on the graphical user interface as a combination of the graphical representations of the components, and for simulating operation and testing of the system. The system model generator operates in (i) a design mode, for constructing and displaying the model of the system from the models of system components as a graphical representation thereof; (ii) a simulation/analysis mode, for predicting performance characteristics of the system; and (iii) a runtime mode for linking to actual system components and operating the actual system components by manipulating the model through the graphical user interface.
摘要:
A system and method utilize data buffers and data access schedules to improve handling of captured image data of an object under inspection for tomosynthetically processing such captured image data to reconstruct desired cross-sectional images therefrom. One embodiment implements a data buffer communicatively coupled to a radiographic imaging system that allows for storage of captured radiographic image data for at least a portion of multiple different projections of an object under inspection, such as image data associated with one or more angles of view of one or more different regions of the object, and then later that stored data may be used for tomosynthetically reconstructing cross-sectional images for the object under inspection.
摘要:
A testing system and various methods involving testing of a device under test (DUT) use a device model to model a stimulus-response behavior of a the DUT. The testing system includes a device model of the DUT that is fitted to the stimulus-response behavior of the DUT and a measurement projector connected to an output of the device model. The device model includes a block diagram model and a difference model. Test metrics for the DUT are produced by the measurement projector from an output of the fitted device model.
摘要:
A system and method: provide a user interface to a user, the user interface including one or more objects representing a corresponding one or more instruments that are connected to the system; receive from a user a selection of one of the one or more instruments, made via the user interface; obtaining at the computer a file that describes commands to which the selected instrument responds; and present to the user via the user interface an indication of the commands to which the selected instrument responds.
摘要:
A computer readable medium stores a program, executable by a computer, for enabling translation of machine-centric commands in an instrument protocol to a programming language for controlling an instrument configured to use the machine-centric commands. The computer readable medium includes an identifying code segment for identifying instrument protocol commands executable by the instrument, and a generating code segment generates methods corresponding to the instrument protocol commands, each method including programming language source code or compiled machine code for executing the corresponding instrument protocol command. A storing code segment stores the methods in a program library associated with the instrument, the program library enabling selection of at least one method by a programming language program that controls the instrument, in order to execute the instrument protocol command corresponding to the selected method.
摘要:
A system and method are provided which enable parallel image reconstruction of multiple depth layers of an object. More specifically, a system and method are provided in which pixels are captured for an object and such pixels are processed to reconstruct voxels for multiple depth layers of the object in parallel. In one embodiment, a reconstruction processor comprises at least one input port for receiving pixels of a radiographic image of an object, and at least one input port for receiving position data associated with a received pixel. It further comprises processing logic operable to determine, based at least in part on the received position data of a received pixel, a first and second voxel of a first and second layer of the object, respectively, to which the received pixel contributes, and further operable to apply the contribution of the received pixel to the first and second voxels in parallel.
摘要:
A computer readable medium stores a program, executable by a computer, for enabling translation of machine-centric commands in an instrument protocol to a programming language for controlling an instrument configured to use the machine-centric commands. The computer readable medium includes an identifying code segment for identifying instrument protocol commands executable by the instrument, and a generating code segment generates methods corresponding to the instrument protocol commands, each method including programming language source code or compiled machine code for executing the corresponding instrument protocol command. A storing code segment stores the methods in a program library associated with the instrument, the program library enabling selection of at least one method by a programming language program that controls the instrument, in order to execute the instrument protocol command corresponding to the selected method.
摘要:
An apparatus for performing a distributed algorithm on a distributed system that comprises a plurality of components coupled together by a communication medium, comprises a user interface for permitting a user to enter a distributed algorithm specification that includes a time scale and tasks the components are to perform at specified times in the time scale; and a processor, coupled to receive the user-entered distributed algorithm specification and coupled to the distributed system on which the distributed algorithm is to be performed. The processor includes (i) a task generator for generating tasks for the respective components to perform according to a predetermined time line, and (ii) a distributor for distributing the tasks to the respective distributed system components. The respective distributed system components perform the distributed algorithm according to the distributed algorithm specification by (i) executing the respective tasks and (ii) communicating with each other over the communication medium.
摘要:
The model-based method tests compliance of production devices with the performance specifications of a device design. The production devices are manufactured in accordance with the device design by a manufacturing process. In the method, a simple model form based on the device design and the performance specifications is developed, a stimulus for testing the production devices is specified and each production device is tested. The model form has a basis function and model form parameters for the basis function. The model form parameters are dependent on the manufacturing process and differ in value among the production devices. A production device is tested by measuring the response of the production device to the stimulus; extracting, using the model form, the values of the model form parameters for the production device from the measured response and the stimulus; and checking compliance of the production device with the performance specifications using the extracted values of the model form parameters.