Hi,
You should use 2 board. One board must be a SRB to provide the X, Y, and Z axes accelerometer data and the other board must have an available UART and be able to connect to a PC. You can use two SRBs. Flash the Accelerometer Demonstration into this two SRB boards. Press SW1 on one SBR (first board). You will see that when you move the board LED1 will flash. LED1 on the other SRB (second board) will flash to. Now you connect second SRB to USB cable, open the Triax, select the correct Com port and the application will start.
Also, you can find more informations in AN3232.pdf
BR,
Adrian