Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 46
tion with thesynchronizing apparatus. 23. The outer segmented ring is the receiving ring. For a four-channel set it is dividedinto 40 equal segments. Only alternate segments are used for the operation of the printerselecting magnets as described in Section 1. Sixteen of the other twenty segments… … Page 8 Section 2 Multiplex System 263-C serve to prevent the possibility of the distant station continuing to send when for somereason the receiving printer is not operating. These lamps will be further described inconnection with the printers. This ring is not rigidly fastened to the other rings…
Telegraph
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