The S4 timer normally (default) sends data to PCs at 4800 baud, No parity, 8 start bits, 1 stop bit (4800,n,8,1). Users of the older Split Second (ussa) DOS programs had to force their S4s to 2400 baud in order to use displays with the same serial port. Sometimes this programming remains in the S4. Turn to Page 15, section 2.6 Set up of the options.

1) Hold yellow button down and the toggle switch up at the same time

2) Turn the S4 on

3) Release both

4) Select program by pressing the yellow button until the approriate number appears. Press red/yellow together when correct prgram appears.

5) Allow the timer to continue through the rest of the start up. Start the timer.

6) Press the delay switch down and watch the options scroll by. The Baud Rate # 3 must be 4800 to be correct.

7) Also check your memory status ( check this forum under "S4 stops transmitting times to the PC")

Fred Patton
fpatton@phoenix-sports.com