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RaceAmerica Model 3850 Timer AC4
Display currently counting with the highest time
elapsed is stopped and output is sent to the Serial
port and Large Display port.
FbAd
This message indicates the alignment of the
Track Sensor and Beam Emitter at the finish line
has failed to maintain alignment while the Timer
AC4 was performing realtime testing after a car
passed through the finish line beam. This message
will disappear when another message is displayed
in the Status Display. It will appear each time the
finish line alignment is detected as bad.
FiniSh SEnSor tESt FAiLEd
This message appears during the power-up
sequence and indicates the software code level
running in the RaceAmerica timer.
iGnorE
Pressing the [2] Ignore key will ignore he last
sensor trip; either Start or Finish.
OFF
This message will keep appearing if the
sensors have been disabled by the operator. This
message is a reminder to enable the sensors prior
to the start of the race event in order to detect cars
at the start and finish lines. This message will also
appear if the T-Link Wireless is disconnected or
powered off.
Out
This message will appear when the operator
determines a car has strayed off course and the
respective timer in the Timer Display is no longer
valid. The timer in the Timer Display currently
counting with the highest time elapsed is stopped,
set to the maximum time value, and output is sent
to the printer.
Prod
This message appears during the power-up
sequence and indicates the product number of the
RaceAmerica timer.
StArt SEnSor tESt FAiLEd
This message indicates the alignment of the
Track Sensor and Beam Emitter at the start line
has failed to maintain alignment while the Timer
AC4 was performing realtime testing after a car
passed through the start line beam. This message
will disappear when another message is displayed
in the Status Display. It will appear each time the
start line alignment is detected as bad.
StoP
This message confirms all timers have been
stopped and are ready for the next run to begin
with the next run number.
StArt
This message indicates the starting of a new
timer. It will appear every time the starting line
beam is interrupted by a car or the manual start
key is pressed on the keypad. The four timers in
the Timer Display are rotated downward. The
topmost timer of the Timer Display is reset to zero
and starts counting.
FiniSH
This message indicates the Finish of the
longest running timer. It will appear every time
the finish line beam is interrupted by a car or the
manual finish key is pressed on the keypad.
SPLit
The Split message will appear briefly every
time the Continue key [5] is pressed on the keypad
in dual sensor modes. This allows for a ‘split time
finish’ to be restarted.
TECHNICAL DETAILS
Timer AC4 is designed to interface with third
party race management software. The timer sends
signals to the PC each time a car breaks the finish
line beam. The following communication strings
are sent to the PC:
Car finishes:
[hex80]fffsss[cr][lf]
or
[hex80]fffssm[cr][lf]
