7
RaceAmerica Model 3850 Timer AC4
STEP 2 -
Identify the emitter/sensor placement at the
common start/finish line (laptimer) or the start line
and finish line (autocross Solo II). The lane width
should be set between four (4) and fifty (50) feet
for 5040 and eight (8) and seventy-five feet for
5050 emitters. To help in determining initial Beam
Emitter to Track Sensor alignment in larger track
widths, use a string stretched between the beam
emitter and track sensor or eyeball a straight line
between units.
STEP 3 -
Layout the wireless links or cables on the
track site. The large connector (RJ45) connects
to the console or T-Link Wireless unit and the
smaller connectors (RJ11) connect to the Track
Sensors at the start line or the finish line.. Connect
the Cable(s) to the Timer Console and the Track
Sensors. Single sensor laptimers use only the start
sensor position.
Once the system is properly set up and
aligned on the racing surface, the timer console
will continue to ‘monitor’ the track sensor at the
start line to start the next timer or at the finish
line to stop the next timer (lap-timer uses only
the start beam).
NOTE: once the start or finish line beam
is interrupted, the system imposes a two to nine
second lockout (see CONFIG menu) of that sensor
to allow blowing debris to settle. During the
last second of the lockout, the system performs
alignment testing of the triggered sensor to
determine if the alignment has changed. Failure
of the starting line beam alignment is indicated
by flashing
[StArt] [SEnSor] [test] [fAiLEd]
.
[Finish] [SEnSor] [tESt] [FAiLEd]
would
indicate the finish line alignment has failed testing.
These messages are displayed until another
message updates the Status Display. This feature
helps in early detection and resolution of a low
battery in the Beam Emitters, someone tripped
over a cable, or a sensor has been bumped out of
alignment.
STEP 4 -
Connect any optional scoreboards, displays
or PCs per owner manuals at this time. The
drawings in Figs 6 thru 8 show some of the
connection options. The Printer RS232 port can
be reconfigured to a RS232 Display port in the
Configuration menu.
Connections are for RS232 serial data at
9600 baud. When the option is located more than
100ft from the console, using wireless or RS422
communication PODs will accomplish the task.
STEP 5 -
Connect the RED and BLACK alligator clips
to the 12VDC battery or 110/230 VAC AC Adapter
and you’re ready to begin.
POWER ON/SELF-TEST
Connecting the 12VDC power source places
the RaceAmerica Timer AC4 into a self-test of the
microprocessor circuitry and LED displays (Light
Emitting Diode). This is an internal test as well as
a visual check of each display. The four line dis-
play sequences an [8] digit through each segment
of all lines. The four line display then sequences
through the product number and the code revision
level coned within the timer.
At the end of the power-up sequence, the
system automatically detects which mode is se-
lected making the available displays and functions
available.
When the sensor(s) are hard wired and ON,
one column of dots at the right edge of each dis-
play line will flash periodically if they are properly
aligned.
When the AC4 unit is ON and an antenna is
connected to the timer, one column of dots at the
right edge of each display line will double flash
periodically.
SYSTEM SETTINGS
Press
*1 REPORT
to print the current
systems setup to a connected printer. This is very
helpful to quickly see if the system is configured
as desired.
