Daktronics AB-1600-1.5,2.5 - Manual (Page 26)

3-4 Electrical Installation
If there is any reason to suspect large voltage fluctuations, place a recorder on the line for at least one
phase of the power for one week while the display operates normally. Contact Daktronics Customer
Service with respect to this recording.
Display brightness and lamp life are generally determined assuming an average incoming line voltage
of 120 volts AC at 60 hertz. If the line voltage varies from that value, it will affect both lamp life and
brightness. Lamp life results will also vary with programming style and use of dimming mode.
§ Lamp life predictions are for lamps operating in a laboratory with continuous operation in a stable
temperature and mechanical environment. Actual values will differ from predicted life because of
switched operation, varying temperature, mechanical vibrations due to wind, traffic and sign service
and actual hours of operation. Data is that of the manufacturer.
Lamp Voltage/Lamp Life with 23 VAC Secondary (T-1109 XFMR)
120 V Only 5 V Buck 5 V Boost
Line
Volts
Lamp
Volts
Candle
Power
Lamp
Life
Hours
Lamp
Volts
Candle
Power
Lamp
Life
Hours
Lamp
Volts
Candle
Power
Lamp
Life
Hours
18.90 19.72 3.42 35022 18.90 2.95 59271 20.60 3.98 20250
108 20.10 3.66 27530 19.27 3.16 46578 21.00 4.26 15923
110 20.48 3.91 21740 19.64 3.37 36770 21.40 4.55 12577
112 20.87 4.17 17242 20.01 3.60 29155 21.80 4.86 9978
113 21.06 4.30 15380 20.19 3.71 16003 22.00 5.01 8902
114 21.25 4.44 13733 20.38 3.83 23215 22.20 5.18 7950
115 21.44 4.58 12275 20.56 3.96 20748 22.40 5.34 7107
116 21.63 4.73 10983 20.74 4.08 18561 22.60 5.51 6359
117 21.83 4.88 9836 20.93 4.21 16621 22.80 5.68 5696
118 22.02 5.03 8818 21.11 4.34 14899 23.00 5.86 5107
119 22.21 5.18 7912 21.30 4.48 13367 23.20 6.04 4583
120 22.40 5.34 7107 21.48 4.61 12004 23.40 6.22 4117
121 22.59 5.50 6389 21.66 4.75 10790 23.60 6.41 3701
122 22.78 5.67 5748 21.85 4.89 9708 23.80 6.60 3331
123 22.98 5.84 5177 22.03 5.04 8742 24.00 6.80 3000
124 23.17 6.01 4666 22.22 5.19 7878 24.20 7.00 2704
125 23.36 6.18 4210 22.40 5.34 7107 24.40 7.20 2440
126 23.55 6.36 3801 22.58 5.50 6416 24.60 7.41 2203
127 23.74 6.55 3435 22.77 5.65 5797 24.80 7.63 1991
128 23.93 6.73 3106 22.95 5.82 5242 25.00 7.84 1801
129 24.13 6.92 2811 23.14 5.98 4744 25.20 8.07 1630
130 24.32 7.12 2547 23.32 6.15 4297 25.40 8.29 1477
If the line voltage is near or above 125 volts or a longer lamp life is desired, contact Daktronics for
transformer adjustment.
Contact a local electrician or the local power company if line voltage is substantially above or below
normal.