Time Domain Reflectometry Microcomputer

Details

• Personal Author:
  Dworak RA ; Jordan AG ; Thorne JS
• Description:
  This report describes the work done on the development of the time domain reflectometry microcomputer (TDRM). Modifications to the FMC- Model 302a Cable Fault Locator is described in Appendix D. The TDRM unit uses an 8080 microcomputer to accurately locate major faults in low capacitance cables to within +- 1 foot when properly calibrated. Major faults in high capacitance cables are usually located within +- 5 feet. The upper limits of fault detection are <1 kilohm shunt fault and >7 ohm series fault. In practice, fault detection limits are reduced to <300 ohms shunt fault and >30 ohms series fault because of discontinuities caused by cable repair. Description provided by NIOSH
• Subjects:
  • Occupational Health
  • Safety
• Series:
  Mining Publications
• Subseries:
  Open File Report
• Document Type:
  Text
• Genre:
  Conference Publications ; Final Contract Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-113
• NIOSHTIC Number:
  nn:10001172
• NTIS Accession Number:
  PB-267785
• Citation:
  NTIS: PB/267-785 Available for Reference At Bureau Libraries; :1-113
• Federal Fiscal Year:
  1977
• Performing Organization:
  Carnegie-mellon University
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB/267-785 Available for Reference At Bureau Libraries
• Download URL:
  https://stacks.cdc.gov/view/cdc/235495/cdc_235495_DS1.pdf
• File Type:
  [PDF - 3.48 MB]
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d45c56ad9139e791fa227ac3dc59ec4d76fa89863e33cf3e71faba80296dafbda5fb2bcf0b9ba23ad8269e4814a9349244e103ce0de0da49a4c60b39faae39d4