Daktronics TI-2022, Display Manual

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Controls & Timing Functions
11
To modify the preset time for programs 1, 2, 4, and 6:
1�
Press and hold <RESET> for 2 seconds. The display will show PR## (program number)
and then the preset time.
2� While holding <RESET> , press <START> to increment minutes and press <STOP> to
increment seconds.
3� Release <RESET> to save the time. The display will count up to or down from that time,
depending on the selected program.
To set the time of day for programs 8 and 9:
1�
Press and hold <RESET> for 2 seconds. The display will show PR## (program number)
and then the preset time.
2� While holding <RESET> , press <START> to increment hours and press <STOP> to
increment minutes.
3� Release <RESET> to save the Time of Day.
Program Operations
1� Count Up with Pushbuttons� This program counts up from 0 to a programmed time
and sounds the horn. Operators can program the time from 0 to 99:59 (mn:sc) using
the switches on the side of the display. If the time is set to 0:00, the display will count
up to 59:59, roll over to 0:00, and continue counting.
In this program, the time can be started and stopped using the switches on the side,
or external, normally open contacts. If a stop input is received within 9.99 seconds
before the start, the display will show a -XX.X time on the digits for 10 seconds
following the start and then will resume counting. While the display is counting, a start
input will hold the elapsed time for 10 seconds and then go back to the running time.
2� Count Up with Photocells . This program counts up from 0 to a programmed time and
sounds the horn. The operator can program the time from 0 to 99:59 (mn:sc) using the
switches on the side of the display. If the time is set to 0:00, the display will count up to
59:59, roll over to 0:00, and continue counting.
In this program, the start and stop inputs are typically external, normally closed
contacts. If the stop input is received within 9.99 seconds before the start, the display
will show a -X.XX time on the digits for 10 seconds following the start and then will
resume counting. While the display is counting, a start input will hold the elapsed time
for 10 seconds and then go back to the running time.
3� Agility Timer . This program is used to time events with a unique start and stop. These
events typically last less than 99.99 seconds; if the timer reaches 99.99, it will roll over
to 0.00 and continue counting. Unlike programs 1 and 2, once the timer is stopped, a
start input will not cause it to begin counting again.
4� Game Clock . This program counts down to 0 from a programmed time and sounds a
horn. The operator can program the time using the switches on the side of the display
from 0 to 99:59 (mn:sc). If the time is set to 0:00, the display will count down to 0:00,
roll over to 59:59, and continue counting down.
5� Qualifying Timer . This program utilizes one photocell plugged into the START input to
qualify oval track. Timing range is from 0 to 99.99 seconds.
Pressing the
<RESET> switch will set the display to 0.0 seconds and clear the best time.
With a photocell connected to the START input, the first car that passes through the
photocell will start the clock counting. The timer will then ignore the photocell for 3
seconds to ensure that the car has completely passed through the Start/Finish line.