• DocumentCode
    1315249
  • Title

    An accurate voice-frequency-level calibrating set for field use

  • Author

    Cochran, W.T.

  • Author_Institution
    Bell Telephone Laboratories, Inc., Murray Hill, N. J.
  • Volume
    81
  • Issue
    6
  • fYear
    1963
  • Firstpage
    600
  • Lastpage
    604
  • Abstract
    In order to maintain the accuracy of loss measurements commensurate with the requirements of direct distance dialing (DDD), very accurate test tones are needed. This paper describes a rugged, portable calibrating set used to insure the accuracy of the test tones. A telephone craftsman may use this set to adjust the level of a signal with 0.3% accuracy. A means for analytically determining the accuracy of such a set is given in the Appendix.
  • Keywords
    Accuracy; Calibration; Detectors; Equations; Oscillators; Standards; Switches;
  • fLanguage
    English
  • Journal_Title
    American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the
  • Publisher
    ieee
  • ISSN
    0097-2452
  • Type

    jour

  • DOI
    10.1109/TCE.1963.6591401
  • Filename
    6591401
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1315249