No, this is NOT right.
2 + 2 = 4 No other configuration works.
The Ted isn't a timer.
It is perfectly acceptable to do OFFICIAL results off of impulses transmitted from start wand into System A timer at finish OR transmit TOD Data from Start timer A at start to finish timer A at finish.
This is how I would set this up.
System A:
Connect System A Timer at Start (timer 1) into System A inputs of start gate.
Connect System B Timer at Start (timer 2) into System B inputs of start gate.
Connect TED Transmitter into System A inputs of start gate to impulse (Black and Green) inputs of TED.
Connect System A timer at Finish (timer 3) into System A Photocell
Connect System B timer at finish (timer 4) into System B Photocell
Connect TED Receiver black and green into System A Timer at Finish (Timer 3).
Synch ALL Timers through TED using patch cord in finish building.
Execute the event using All Timers running in TOD mode.
Timer 3 is connected to computer generating results, providing scoreboard output, etc.
At end of race calculate ALL times for all racers using subtraction and comparison of Timer 1 and and Timer 3 and Timer 2 and Timer 4. Times don't have to be exact, but MUST be close and consistent. If everything looks accurate, consistent and without anomaly, all times as transmitted from impulses at the start to Timer 3 would stand.
TDRF Must be completed twice, once for timers at the start, once for timers at the finish. TDRF 1: Net times for System A (timer 3) at the finish comes from the impulses received to generate the System A (timer 3) start TOD. Net times for System B (timer 4) at the finish would be blank.
TDRF 2: Insert at TOD as appropriate from correct (A or B) timers. All net times come from using subtraction from Timer 1 and Timer 3 and Timer 2 and Timer 4).
Where do you get 5 timers?
Jenna