Pulse train data transmission - includes counting pulses and changing polarity at transmission channel input when end of pulse train is detected

摘要

The transmitted information is represented by the number of pulses in a pulse train. Pulses of a pulse train are counted by a counter (ZS1). After the end of a pulse train is recognised, polarity at the transmission channel (g) input is changed and the counter is counted back by a clock pulse train whose frequency is higher than the pulse train fundamental frequency. Polarity at the transmission channel (g) input is restored to its initial state when the counter reaches zero.