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201 Daktronics Dr. PO Box 5128 Brookings, SD 57006-5128 tel 800-325-7446 605-692-0200 fax 605-692-0381 www.daktronics.com DF -02 7 6 6 Appendix A: In the letter from the city dated April 21, 2016, the following items were requested. Daktronics answers are in red text. Scoreboard Lighting: o Further details on the lighting and lighting levels/measurements (nits) to be used on the scoreboard during events at the stadium. Minimum and maximum lighting levels used for day and evening activities. The maximum lighting level in the daytime for this display is 11,000 nits. As ambient light level reduces (during rainy/cloudy conditions or during dusk), the display will reduce its intensity automatically as detected through the light sensor. As sunny daytime conditions progress into dusk, the display can dim from the maximum of 11,000 nits all the way down to the minimum of 440 nits (4% of the maximum). As the maximum intensity of 11,000 is reached primarily during bright, sunny conditions, the minimum intensity is reached during darkened nighttime conditions. If there is additional ambient lighting from field lighting, parking lot lights, etc., the display may operate at a higher intensity in order to be viewed appropriately. However, the additional ambient lighting further reduces any light impact from the display. Note, as mentioned above, the maximum and minimum operating levels are assuming a utilization rate of 100% (all-white content). Actual levels will be lower with other content or colors. Dimming capacity of the scoreboard if a dimmer is installed. The DVXMC board is equipped with a photocell/light sensor that allows the display to automatically adjusts the light intensity in direct correlation with ambient light conditions utilizing 64 levels of dimming. For example, if a game starts during daylight conditions but progresses into nighttime conditions after sunset, the scoreboard will detect the ambient light change and dim accordingly. The ability to automatically dim based on ambient light levels ensures the board will not be too bright at night nor too dim during daytime conditions. o Expected lighting levels/measurements (nits) at Lake Valentine Road and at the residential neighborhood to the north and east of the stadium. The accompanying lighting analysis shows no light will fall on Lake Valentine Road or the residential neighborhoods to the north and east of the stadium. o Comparison of the current lighting levels of the existing scoreboard to the proposed lighting levels of the new scoreboard. Since the lighting analysis shows no light will fall on neighboring sensitive uses, a full comparison between the two lighting systems is unnecessary. However, the new display incorporates LEDs which produce directional illumination. The LEDs produce light in an out and downward fashion, which reduces upward illumination. This design also limits illumination onto unintended areas.