CODE QUALITIES IN UNBALANCED INTERFACE CIRCUITS COMPOSED OF OFFICE CABLES

Recently, with a trend of appearances of large-scale computerized systems, a distance between a computer and a telecommunication equipment has come to be longer gradually. In this paper, the qualities of transmitted codes in an unbalanced interconnection circuit between them are analyzed theoretically and experimentally to perform a reliable code transmission in comparatively short distance up to about 300 m with removal of the restriction of the length of 30 m recommended by CCITT. From these studies, it is explained that in a JNR's computer center, the unbalanced interface circuits have been composed already in ranges of the cable length of up to 150 m and of the speeds of 200, 2400 and 9600 bands, using a star-quad cable with layer-shields, and driver and receiver circuits used in the practice so far.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3127232
• Corporate Authors:

  Ken-yusha, Incorporated

  1-45-6 Hikari-cho, Kokubunji-shi
  Tokyo,   Japan 
• Authors:
  • Takahashi, K
• Publication Date: 1974-3

Media Info

• Features: Tables;
• Pagination: 5 p.
• Serial:
  • Railway Technical Research Institute, Quarterly Reports
  • Volume: 15
  • Issue Number: 1
  • Publisher: Railway Technical Research Institute/Tetsudo Gijutsu Kenkyujo
  • ISSN: 0033-9008
  • Serial URL: http://www.rtri.or.jp/eng/

Subject/Index Terms

• TRT Terms: Communications; Data communications; Technology
• Geographic Terms: Japan
• Subject Areas: Railroads;

Filing Info

• Accession Number: 00054947
• Record Type: Publication
• Source Agency: Railway Technical Research Institute
• Report/Paper Numbers: Quart Rpt
• Files: TRIS
• Created Date: Jul 15 1974 12:00AM