Lesson 1/Learning Event 9
(3) The converter attached to the DC send loops at the west station
sequentially switches the very short data pulses from the data bit stream
into telegraph terminal channels. Besides the switching function, the send
converter extends each code pulse to the length of a normal teletypewriter
signal for transmission over the corresponding channel of the terminal.
(4) Conversely, the receiving converter samples the appropriate
channel having a normal-length teletypewriter pulse, and produces a short
data pulse. Sequential switching reconstructs the data bit stream for use
in the data receiving terminal.