Journal ArticleDOI
Effect of telegraph distortion on the margins of operation of start-stop receivers
Reads0
Chats0
TLDR
In this article, the causes of distortion occurring both externally and internally to the receiver and the effects of such distortion on the operating margins are described and some of the more important considerations involved in establishing distortion tolerance criteria are discussed.Abstract:
Recent practical and theoretical investigations of the effect of signal distortion on the margins of operation of start-stop telegraph receivers have led to the development of improved methods of testing and adjusting receivers, have enabled criteria of distortion tolerance to be set up for subscribers' and monitoring receivers and regenerative repeaters, and have made possible the application of more convenient and accurate standards of telegraph transmission. This paper describes the causes of distortion occurring both externally and internally to the receiver and the effects of such distortion on the operating margins. Methods of determining the internal distortion of a receiver are described and some of the more important considerations involved in establishing distortion tolerance criteria are discussed.read more
Citations
More filters
Journal ArticleDOI
No. 1 ESS ADF: autonomous data scanner and distributor
TL;DR: This paper describes the operation and design features of the data-scanner distributor for the No. 1 ESS ADF, which could handle handshaking, addressing, and message transmission for a large number of duplex data lines at a low cost and with the ability to accommodate all speeds and codes now commonly used in low-speed data machines.
References
More filters
Journal ArticleDOI
A Transmission System for Teletypewriter Exchange Service
R. E. Pierce,E. W. Bemis +1 more
TL;DR: A brief description of the principle of operation of teletypewriters is included in this paper as an introduction to the discussion of the transmission requirements and the plan of the present system.
Journal ArticleDOI
Fundamentals of teletypewriters used in the Bell System
TL;DR: The fundamental principles and various features of the teletypewriter machines now in common use are discussed and the more important factors which have been controlling in their development are explained.
Journal ArticleDOI
Recent developments in the measurement of telegraph transmission
TL;DR: The changes which have occurred in service requirements, particularly the large commercial development of start-stop teletypewriter service and the effect of these changes on the technique of telegraph transmission measurement, are discussed.