Neutral direct-current telegraph system

In telecommunication, a neutral direct-current telegraph system (single-current system, single-current transmission system, single-Morse system) is a telegraph system in which (a) current flows during marking intervals and no current flows during spacing intervals for the transmission of signals over a line, and (b) the direction of current flow is immaterial.[1]

See also

References
  1. Weik, Martin H. (2001), Weik, Martin H. (ed.), "neutral direct-current telegraph system", Computer Science and Communications Dictionary, Boston, MA: Springer US, p. 1096, doi:10.1007/1-4020-0613-6_12302, ISBN 978-1-4020-0613-5

 This article incorporates public domain material from the General Services Administration document: "Federal Standard 1037C". (in support of MIL-STD-188)


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