Isolated data acquisition system for high voltage applications

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Description

This report describes the design and operation of a microcomputer controlled system for acquisition of both analog and binary data within the high voltage stages of a linac modulator. The system is comprised of a microprocessor Controller which communicates with the remote data Acquisition circuits via an optical bus. The bus, which uses a 1 MHz Manchester II format, is configured as a loop, starting at the Controller, daisy-chaining the remote cards and terminating back at the Controller. Upon receiving a linac timing pulse, the Controller sends addressed commands to the individual remote cards and receives data back. It then ... continued below

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Pages: 4

Creation Information

Waitz, A. & Donaldson, A. June 1, 1985.

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Description

This report describes the design and operation of a microcomputer controlled system for acquisition of both analog and binary data within the high voltage stages of a linac modulator. The system is comprised of a microprocessor Controller which communicates with the remote data Acquisition circuits via an optical bus. The bus, which uses a 1 MHz Manchester II format, is configured as a loop, starting at the Controller, daisy-chaining the remote cards and terminating back at the Controller. Upon receiving a linac timing pulse, the Controller sends addressed commands to the individual remote cards and receives data back. It then passes this data to the linac control system through a Multibus connection. Each remote circuit can return 16 binary sense and 7 (12 bit) analog parameters within 270 us. This speed is possible because of a pipelined design where one word is transmitted while another is being converted. A data conversion cycle is initiated when a remote data acquisition card receives the proper command and address from the controller.

Physical Description

Pages: 4

Notes

NTIS, PC A02/MF A01; 1.

Source

  • Particle accelerator conference, Vancouver, Canada, 13 May 1985

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Identifier

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  • Other: DE85016984
  • Report No.: FNAL-TM-1323
  • Report No.: CONF-850504-247
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 5291472
  • Archival Resource Key: ark:/67531/metadc1066541

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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 1, 1985

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

Description Last Updated

  • March 30, 2018, 12:19 p.m.

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Waitz, A. & Donaldson, A. Isolated data acquisition system for high voltage applications, article, June 1, 1985; United States. (digital.library.unt.edu/ark:/67531/metadc1066541/: accessed May 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.