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controlled completely self-contained race timing systems
utilizing the latest CMOS technology circuit components to
provide a highly accurate drag timing solution. The system
contains an internal quartz crystal clock to maintain time
accuracy and display of race results to one thousandth of a
second.
components from the TREE.
(to the unaided human eye) Infra-red light. The coded light
frequencies are constantly received by the Track Sensors until
a car interrupts reception ('breaks' the beam).
on Line-of-Sight principles. This makes alignment of the units
critical. These units will operate over a wide range of conditions
(full sun to total darkness) but should not be operated beyond
the specification parameters ( 4 ft to 50 ft).
surface, the timer console will 'monitor' the track sensors each
time a run is made.
of checking for a valid set of start conditions (expected blocked
and unblocked sensors), then starts the lights (with adjustment
for Full and Pro formats as well as any bracket or index
adjustments) while watching for a start in either lane (a foul start
will freeze the tree at the point of foul), records Reaction Time
for each lane as the racers start, then watches for subsequent
beam interruptions at the 60 foot, Speed and Finish points; after
DTSS / SST
all data is collected, NHRA rules are applied to determine the
LED Drag Tree
winner and display this on the TREE and console plus output
to PCs, printers and Scoreboards connected to the system. Data
includes RT, Redlights, ET, winner indication, Dial in times,
breakouts and total time.
THEORY OF OPERATION
The 2650 Series Drag Timers are dual microprocessor
Power is supplied to the timer console and track sensor
The Beam Emitters and Track Sensors operate on invisible
The IR Beam Emitter to Track Sensor transmission operates
Once the system is properly set up and aligned on the racing
In racing mode, the system microprocessor takes control
RaceAmerica Model 2650 Series XL Advanced
4
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