Daktronics TI-2020 Multipurpose Track & Field LED Timing Display - Manual (Page 21)

Controls & Timing Functions 15
3. Count Up (with normally open Start and Stop)
In this mode, the display is programmed to a specific time, running in MN:SC.TH format.
When the display reaches the preset time, the horn sounds and the clock stops.
A setting of 0 tells the display to count up from 0 to 59:59.99, roll over to 0:00 and
continue counting. If a value from 00:01 to 99:59 is set, the display starts counting at 0;
it sounds the horn when the set value is reached and stops on that value. Pressing the
RESET switch sets the clock to 00.0.
During the operations described above, if the display is already counting and a
START input is triggered, the display will show the elapsed time for 10 seconds and
then go back to displaying the running time. If the display is stopped and START is
pressed, the display will continue counting from the stopped time. If the STOP input
is received less than 10 seconds before the START, the timer will display the negative
value (-9.99) for 10 seconds and then go to the current running time. The HORN input
manually sounds the horn.
 START input will look for a normally open closure.
 STOP input will look for a normally open closure.
 HORN input will look for a normally open closure.
 RESET input will look for a normally open closure.
4. Count Up (with normally closed Start and Stop)
In this mode, the display is programmed to a specific time, running in MN:SC.TH format.
When the display reaches the preset time, the horn sounds and the clock stops.
A setting of 0 tells the display to count up from 0 to 59:59.99, roll over to 0:00, and
continue counting. If a value from 00:01 to 99:59 is set, the display starts counting at 0;
it sounds the horn when the set value is reached and stops on that value. Pressing the
RESET switch sets the clock to 0.00.
During the operations described above, if the display is already counting and a
START input is triggered, the display will show the elapsed time for 10 seconds and
then go back to displaying the running time. If the display is stopped and START is
pressed, the display will continue counting from the stopped time. If the STOP input
is received less than 10 seconds before the START, the timer will display the negative
value (-9.99) for 10 seconds, and then go to the current running time. The HORN input
manually sounds the horn.
 START input will look for a normally closed closure.
 STOP input will look for a normally closed closure.
 HORN input will look for a normally closed closure.
 RESET input will look for a normally closed closure.