There are two ways to use a display. 1) is directly connected to the S4 using the Display output on the back of the timer(this is only useful if you don't use a computer to time). 2) If you use software to time a race, than the computer controls the display, this is the normal way most everyone uses for setup and you will
need a minimum of 2 serial ports.
So we use option #2 and the following cabling:
S4 to com 1 of a laptop (or any computer) using the din plug to 9pin; the S4 set to program 3 (TOD).
9pin to GAZ4 display using com 2( or any open com port on your computer)not sure of the address the GAZ unit should be but try 0, 1, or 2 for single course.
Your timer should spit TOD impulses to the software which will in turn control the displays. Your post says you are able to get the displays into test mode from the software, proving the cable is working, now just check to make sure the proper address is set on the display. Remember, the software sends times to the display board, not the S4! So that means you will have to create dummy racers on the software and create timing impulses to check your displays for times.
If all else fails, try the Alge site for the GAZ test program, it can come in handy if you think something is wrong with the connection/display boards. Other option is to download "Fred's Fiddleware" from PST and try setting up the display option and there is a quick button to "Send TOD" to clocks to check all settings through software. Also comes in handy when checking timer/display options on the computer.
Hope this helps!
Originally posted 9 Jan 2002 by Jim Karnes
