Star Micronics NX-1500 - Serial Interface

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THEORY OF OPERATION
Fig. 2-3 Timing Chart of Parallel Interface
2-1-2. Serial Interface (option)
When the serial interface is used, an optional Serial Interface Board is required to be installed. The board will change the
voltage level (RS-232C <-------> TTL) and the data transfer method (Serial <-------> parallel).
Fig. 2-4 Serial Interface