Countdown Timer; Keypad Functions - RaceAmerica 3850A AC4 Owner's Manual

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
the number of minutes (01 to 99) and press #
ENTER. The display will show [Count] [XX.
XX] representing minutes and seconds remaining.
Press [1] again to stop the count; [StoP] [Count]
will briefly display and the screen will blank. The
count is sent to any LED displays connected to
the AC4.

KEYPAD FUNCTIONS

The 3850 timer utilizes a second function keypad;
functions printed in white operate when pressed;
functions printed in yellow require the 'SHIFT'
button to be pressed two seconds before the desired
second function yellow key is pressed.
The following defines the keypad key
functionality:
Each function is coded for which modes it is
available in as follows:
•
Manual mode
Hard wired mode
T-Link Wireless mode
KEY 1
Pressing 1 COUNT will allow the timer to go
into countdown mode: [EntEr] [StArt] [XX] dis-
plays; enter the number of minutes (01 to 99) and
press # ENTER. The display will show [Count]
[XX.XX] representing minutes and seconds re-
maining. Press [1] again to stop the count; [StoP]
[Count] will briefly display and the screen will
blank.
•
•
•• •
KEY 2
The 2 IGNORE key will stop and give no time
for the currently running timer.
KEY 3
Pressing the [3] key will manually start a
timer. This is the same function as breaking the
start beam. If all four timers are counting and the
[3] key is pressed, the bottom timer will be lost
and a new timer will be started at the top of the
display. Since this is manual mode, the operator
has full control of the timer starting function. This
key is enabled when the Status Display indicates
[OFF].
KEY 5
If a timer is inadvertently stopped by a worker
running through the finish line or manually stopped
by pressing the Manual Stop or Off Course keys,
the timer can be restored and counting with the
correct elapsed time using the [5] Continue key.
The most recently stopped timer is restarted and
updated from a backup timer internally maintained
Fig. 12 Keypad
RaceAmerica Model 3850 Timer AC4
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