Daktronics C44 - Manual (Page 36)

3-8 C-44 Race Timer
Operation
Reaction Timer
All reaction times are calculated from the start of the green light. A perfect reaction time
occurs when a car leaves the start line exactly as the green lamp lights. Negative or red
light reaction times are calculated backwards from the beginning of the green light. Refer
to Figure 27 in Section 3.3 for information on how the reaction time can be displayed.
Printers
The log printer and time slip printer may be enabled and disabled (Refer to <L> Tower
Log Printer and <P> Time Slip Printer in Section 3.3). If a printer is turned off or not
ready, the monitor will display a message to that effect in the lower right hand corner of
the screen. If a printer is off, the C-44 race controller will store a limited number of race
results (approximately 15). When the printer is once again enabled, the stored
information will automatically be printed out. Always verify that the printer is powered
up and all printer cables are connected correctly.
Reset Win Light
Press <CTRL><F5> to turn off all of the spectator Win Lights on the finish line
scoreboards. These lights will also automatically turn off after a preset amount of time.
This preset amount of time (selected manually by the operator) is called the Win Light
Format (W on the parameter setup menu, refer to <W> Win Light Format in Section
3.3). The Win Light Format can be set to either 5, 10, or 15 seconds.
Photocell Check
The push-to-test photocells switch on the lower right corner of the isolation interface
makes the photocells less sensitive, in order to verify that the cells are properly aligned.
If all the photocells are aligned properly, the letters denoting each cell will not appear on
the bottom of the screen and the corresponding LED’s on the isolation interface will be
lit. If a cell is not properly aligned or it is not working properly (i.e. the cell is not
receiving power) the letters for that cell will show up on the screen after the button is
pressed. If this occurs, these particular cells should be checked before the system is used.
Margin of Victory (MOV)
The Margin of Victory is the time between when the first car crosses the finish line until
the second car crosses. This time is displayed on the C-44 monitor on the track side of
the car that finishes first. This time is calculated by adding the reaction time to the
elapsed times for each lane and then adding any handicap time to the opposite lane. The
times are then subtracted to get the margin of victory. MOV is not displayed if there is a
Foul, a Breakout, or if True Win is off.
3.3 Additional Functions
Help Screen
The following illustration depicts the help screen that is called up on the monitor when
<F6> is pressed.
It is recommended that this page be reproduced and posted for the operator’s use.
Additional function descriptions appear on the following pages.