If you need to receive data from the Speedway Revolution reader via a serial connection (RS-232), then you have two options to do so. The reader's serial port is accessed through the GPIO port on the reader as illustrated here:
Reader's RS232TX - Pin 3 in above diagram - Connect to host device's RX
Reader's RS232RX - Pin 2 in above diagram - Connect to host device's TX
Below we provide instructions for two options to do this:
Option 1: create a serial cable that connects the GPIO port on the reader to a serial device (DB-9):
NOTE: If you don't want to make your own cable, you can order it from this third-party source.