Enhanced Edot X System

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Description

The capability of EdotX would be improved by increasing the instrument's dynamic range to expand the range of signals measurable by the device. The heart of the EdotX system is a two channel analog to digital (A/D) conversion card with two analog to digital converters tightly coupled to a field programmable gate array (FPGA). Signals are continually digitized by the A/D and processed by the FPGA. When the FPGA detects a trigger condition, the data are transferred using direct memory access to the host computer memory, which in turn saves the data to disk. The original design utilizes a single ... continued below

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Smith, Scott & Bostick, Harry June 15, 2009.

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Description

The capability of EdotX would be improved by increasing the instrument's dynamic range to expand the range of signals measurable by the device. The heart of the EdotX system is a two channel analog to digital (A/D) conversion card with two analog to digital converters tightly coupled to a field programmable gate array (FPGA). Signals are continually digitized by the A/D and processed by the FPGA. When the FPGA detects a trigger condition, the data are transferred using direct memory access to the host computer memory, which in turn saves the data to disk. The original design utilizes a single A/D channel for data acquisition. The task was to increase the dynamic range of the system by enabling the second A/D channel, allowing the simultaneous acquisition of the original A/D channel and the additional second A/D channel. The input signal would be fed to the original channel and to the second channel with the second channel input being attenuated. When a signal hits the maximum range of the first channel, the data from the second channel, which is attenuated, are then used. Because both A/D's acquire data simultaneously, they may be used as a single expanded dynamic range channel.

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1164 KB

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  • Report No.: DOE/NA/27513-F
  • Grant Number: FG52-06NA27513
  • DOI: 10.2172/957048 | External Link
  • Office of Scientific & Technical Information Report Number: 957048
  • Archival Resource Key: ark:/67531/metadc931777

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • June 15, 2009

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

Description Last Updated

  • Dec. 16, 2016, 12:35 p.m.

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Smith, Scott & Bostick, Harry. Enhanced Edot X System, report, June 15, 2009; United States. (digital.library.unt.edu/ark:/67531/metadc931777/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.