Countdown Timer - RaceAmerica 3850B Timer AC4 Owner's Manual

Dual Beam - Autocross Solo II
Hard-Wired
Run Dual Beam hard-wired with Sensors [on]
as configured in SENSORS [*2] and the sensor
cables in the START and FINISH connectors.
Each time the Start beam is interrupted, a timer
will start countiing. After each start, the beam
is locked out for two to nine seconds (see *4
CONFIG) to allow the car to pass through and
the dust to clear. Up to four cars can start before
the first car must finish. Once a car has finished,
another car can start. A run number is assigned
to each start on the console. Cars must start and
stop without passing.
Each finish freezes the highest count running
timer and sends the time to the serial ports (PCs
and displays) until another run starts.
The console operator can use the Manual
Start [3] and or Manual Stop [6] keys to over-ride
the track sensors.
If a run is stopped in error, the operator
can Continue [5] which will restart the last run
stopped. This feature can restart timers for all runs
on the display without losing any time.
If a car goes off course and cannot finish;
press 'Did not Finish DNF [9] when the car
should finish and their time will be set to the time
configured in [out Et] (*44####).
If a car reaches the maximum time allowed,
its timer will automatically stop at that number.
This time is configured in [End Et] (*44###).
Use 'ALL STOP' [*7] to stop all currently
counting timers when something happens requiring
a rerun of all cars on the track. Run numbers are
not reset. Alternately, 'RESTART' [*0] will reset
the timer to the initial power-up settings.
While timing cars, Alignment status can be
checked without losing a timed run.
Sensor status is monitored in the background.
When the sensors are properly aligned, the decimal
points by the sixth character on each line will flash
intermittently (about every three seconds). If the
start sensor goes out of alignment, the display will
show [StArt] [SenSor] [test] [FAiLEd] with test
failed flashing to get the operators attention. If the
finish sensor goes out of alignment, the display
will show [FiniSH] [SenSor] [test] [FAiLEd] with
test failed flashing to get the operators attention.
Unaligned sensors will cause a sensor trip and
a sensor trip each lockout interval as set in the
CONFIG menu (*44#####). During an out of
alignment situation, turn off Sensors (*2) and
use the manual FINISH (6), CONTINUE (5) and
START (3) may be used.
Dual Beam - Autocross Solo 1
Wireless
Run Dual Beam Wireless with Sensors [OFF]
as configured in SENSORS [*2]. Each time the
start beam (T-Link 'A') is interrupted, a timer will
start countiing. After each start, the beam is locked
out for two to nine seconds (see *4 CONFIG)
to allow the car to pass through and the dust to
clear. Up to four cars can start before the first car
must finish (T-Link 'B'). Once a car has finished,
another car can start. A run number is assigned
to each start on the console. Cars must start and
stop without passing.
Each finish freezes the running timer and
sends the time to the serial ports (PCs and displays)
until another run starts.
If a car goes off course and cannot finish;
press 'Did not Finish DNF [9] when the car should
finish and their time will be set to the maximum.
Use 'ALL STOP' [*7] to stop all currently
counting timers when something happens requiring
a rerun of all cars on the track. Run numbers are
not reset. Alternately, 'RESTART' [*0] will reset
the timer to the initial power-up settings.
While timing cars, status conditions can be
checked. RF Integrity and Battery Level status are
available. Alignment status is always available on
the 'A' and 'B' T-Link Wireless units.

COUNTDOWN TIMER

The AC4 has a separate countdown timer to
be used for timed breaks in the action. To activate,
stop all timers [*7]. Press COUNT [1]; the display
will show [EntEr] [StArt] [XX] displays; enter
RaceAmerica Model 3850 Timer AC4
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