The Experts below are selected from a list of 168 Experts worldwide ranked by ideXlab platform

Haruo Kobayashi - One of the best experts on this subject based on the ideXlab platform.

  • using distortion shaping technique to equalize adc thd performance between ates
    Journal of Electronic Testing, 2017
    Co-Authors: Peter Sarson, Haruo Kobayashi
    Abstract:

    In this paper, we describe how a phase switching technique is used to control the harmonic contents of a generated sinusoidal signal using digital signal processing techniques. We will describe how this technique equalizes the harmonic performance of arbitrary waveform generators installed in a large scale integration Test system, allowing extended performance Testing of the total harmonic distortion of an analog-to-digital converter that ordinarily would be possible only using more advanced Test equipment. Once a device has been characterized and correlated to the bench, a Test Engineer is required to release the product into production. One of the major issues surrounding this exercise is the difference in the obtained results between Testers of the same manufacture for parameters sensitive to harmonics, noise, and spurious components such as total harmonic distortion. By using the techniques developed in this paper, the user will be able to deploy an academic solution to an industrial problem and extend the range of Test equipment that ordinarily would need to be discarded for such Test requirements. We will then show the gauge repeatability and reproducibility between two Testers of the same manufacture, and how using the described technique produces a better correlation, thus allowing less stringent guard-bands to guarantee the performance of those devices that have performance criteria close to the device specification. This work also goes some way to proving previous papers’ works on distortion shaping Testing to enhance the spectral performance of arbitrary waveform generators.

  • using distortion shaping technique to equalize adc thd performance between ates
    2016 IEEE 21st International Mixed-Signal Testing Workshop (IMSTW), 2016
    Co-Authors: Peter Sarson, Haruo Kobayashi
    Abstract:

    This paper describes how using a phase switching technique can produce a low distortion signal from an Arbitrary Waveform Generator (AWG), and how this technique aligns the performance of the AWGs between Testers, to evaluate the Total Harmonic Distortion (THD) performance of Analogue-to-Digital Converters (ADCs). Once a device has been characterized and correlated to the bench, the Test Engineer needs to start the release procedure in getting the device into a production ready state. One major issue that a Test Engineer faces is the difference in ADC THD performance Test results using the same Automated Test Equipment (ATE) manufacture Testers (AWGs). This paper will then show how the Gauge Repeatability and Reproducibility (GRR) between Testers can be produced more easily allowing less stringent guard-bands to guarantee the performance of those devices that have performance criteria close to the device specification. This work will also go some way to proving previous papers' works on distortion shaping Testing to enhance the spectral performance of Arbitrary Waveform Generators.

Peter Sarson - One of the best experts on this subject based on the ideXlab platform.

  • using distortion shaping technique to equalize adc thd performance between ates
    Journal of Electronic Testing, 2017
    Co-Authors: Peter Sarson, Haruo Kobayashi
    Abstract:

    In this paper, we describe how a phase switching technique is used to control the harmonic contents of a generated sinusoidal signal using digital signal processing techniques. We will describe how this technique equalizes the harmonic performance of arbitrary waveform generators installed in a large scale integration Test system, allowing extended performance Testing of the total harmonic distortion of an analog-to-digital converter that ordinarily would be possible only using more advanced Test equipment. Once a device has been characterized and correlated to the bench, a Test Engineer is required to release the product into production. One of the major issues surrounding this exercise is the difference in the obtained results between Testers of the same manufacture for parameters sensitive to harmonics, noise, and spurious components such as total harmonic distortion. By using the techniques developed in this paper, the user will be able to deploy an academic solution to an industrial problem and extend the range of Test equipment that ordinarily would need to be discarded for such Test requirements. We will then show the gauge repeatability and reproducibility between two Testers of the same manufacture, and how using the described technique produces a better correlation, thus allowing less stringent guard-bands to guarantee the performance of those devices that have performance criteria close to the device specification. This work also goes some way to proving previous papers’ works on distortion shaping Testing to enhance the spectral performance of arbitrary waveform generators.

  • using distortion shaping technique to equalize adc thd performance between ates
    2016 IEEE 21st International Mixed-Signal Testing Workshop (IMSTW), 2016
    Co-Authors: Peter Sarson, Haruo Kobayashi
    Abstract:

    This paper describes how using a phase switching technique can produce a low distortion signal from an Arbitrary Waveform Generator (AWG), and how this technique aligns the performance of the AWGs between Testers, to evaluate the Total Harmonic Distortion (THD) performance of Analogue-to-Digital Converters (ADCs). Once a device has been characterized and correlated to the bench, the Test Engineer needs to start the release procedure in getting the device into a production ready state. One major issue that a Test Engineer faces is the difference in ADC THD performance Test results using the same Automated Test Equipment (ATE) manufacture Testers (AWGs). This paper will then show how the Gauge Repeatability and Reproducibility (GRR) between Testers can be produced more easily allowing less stringent guard-bands to guarantee the performance of those devices that have performance criteria close to the device specification. This work will also go some way to proving previous papers' works on distortion shaping Testing to enhance the spectral performance of Arbitrary Waveform Generators.

Nicolas J Schrading - One of the best experts on this subject based on the ideXlab platform.

  • autonomous cryogenic load operations knowledge based autonomous Test Engineer
    2013
    Co-Authors: Nicolas J Schrading
    Abstract:

    The Knowledge-Based Autonomous Test Engineer (KATE) program has a long history at KSC. Now a part of the Autonomous Cryogenic Load Operations (ACLO) mission, this software system has been sporadically developed over the past 20 years. Originally designed to provide health and status monitoring for a simple water-based fluid system, it was proven to be a capable autonomous Test Engineer for determining sources of failure in the system. As part of a new goal to provide this same anomaly-detection capability for a complicated cryogenic fluid system, software Engineers, physicists, interns and KATE experts are working to upgrade the software capabilities and graphical user interface. Much progress was made during this effort to improve KATE. A display of the entire cryogenic system's graph, with nodes for components and edges for their connections, was added to the KATE software. A searching functionality was added to the new graph display, so that users could easily center their screen on specific components. The GUI was also modified so that it displayed information relevant to the new project goals. In addition, work began on adding new pneumatic and electronic subsystems into the KATE knowledge base, so that it could provide health and status monitoring for those systems. Finally, many fixes for bugs, memory leaks, and memory errors were implemented and the system was moved into a state in which it could be presented to stakeholders. Overall, the KATE system was improved and necessary additional features were added so that a presentation of the program and its functionality in the next few months would be a success.

Barbara L Brown - One of the best experts on this subject based on the ideXlab platform.

  • knowledge based autonomous Test Engineer kate
    1991
    Co-Authors: Carrie L Parrish, Barbara L Brown
    Abstract:

    Mathematical models of system components have long been used to allow simulators to predict system behavior to various stimuli. Recent efforts to monitor, diagnose, and control real-time systems using component models have experienced similar success. NASA Kennedy is continuing the development of a tool for implementing real-time knowledge-based diagnostic and control systems called KATE (Knowledge based Autonomous Test Engineer). KATE is a model-based reasoning shell designed to provide autonomous control, monitoring, fault detection, and diagnostics for complex Engineering systems by applying its reasoning techniques to an exchangeable quantitative model describing the structure and function of the various system components and their systemic behavior.

Walter S Wehner - One of the best experts on this subject based on the ideXlab platform.

  • autonomous cryogenics loading operations simulation software knowledgebase autonomous Test Engineer
    2013
    Co-Authors: Walter S Wehner
    Abstract:

    Working on the ACLO (Autonomous Cryogenics Loading Operations) project I have had the opportunity to add functionality to the physics simulation software known as KATE (Knowledgebase Autonomous Test Engineer), create a new application allowing WYSIWYG (what-you-see-is-what-you-get) creation of KATE schematic files and begin a preliminary design and implementation of a new subsystem that will provide vision services on the IHM (Integrated Health Management) bus. The functionality I added to KATE over the past few months includes a dynamic visual representation of the fluid height in a pipe based on number of gallons of fluid in the pipe and implementing the IHM bus connection within KATE. I also fixed a broken feature in the system called the Browser Display, implemented many bug fixes and made changes to the GUI (Graphical User Interface).