Daktronics Tuff Sport BB-2102, Display Manual, Page: 24 / 112

18 Electrical Installation
Note: Standard power cords and signal cables are about 10' (3 m) long. If a hoist is used
for this installation, all main power/signal cables must be long enough to allow the
display to be lowered. An optional sheet metal floor may contain the cables when the
scoreboard is raised. If the scoreboard is static-mounted, the cables only need to be long
enough to provide service. Neatly tie excess lengths out of the way.
4.3 Main Power Connection
Note: Be sure to make sectional power connections before connecting main power!
Each scoreboard section includes two 120 VAC power cords: one for Power In and one for
Power Out.
1. Install a grounded 120 VAC receptacle near the scoreboard/backlit ad panel location
(each message center will require its own power receptacle). Try to mount it so that
the power cord is easily accessible to plug in and hidden from view, such as centered
above the display.
2. Determine which scoreboard/backlit ad panel section is closest to the grounded
receptacle, and plug in its power cord.
The control console requires a 120 VAC receptacle and uses less than 1 A of power.
Displays operating on 230 VAC are also available, and they are shipped equipped with
universal power plugs.
Grounding
Connect the scoreboard to earth ground. Proper grounding assures reliable equipment
operation and protects the equipment against damaging electrical disturbances and lightning.
Daktronics recommends a resistance-to-ground of 10 ohms or less. The electrical contractor
performing the electrical installation can verify ground resistance. Daktronics Sales and
Service personnel can also provide this service. The grounding connection on the power
cord‟s three-prong plug connects to the shell of the scoreboard.
Note: The customer must properly ground the outlet according to local and national
codes. Failure to ground the outlet voids the warranty for the scoreboard.
4.4 Power-On Self-Test (POST)
The scoreboard performs a self-test each time that power is turned on and the control console
is powered off or not attached to the scoreboard. If the control console is attached and
powered on, the self-test does not run, and data from the control console is displayed on the
scoreboard after a brief period of time. Each scoreboard self-test pattern will vary depending
on the scoreboard model, the number of drivers and types of digits.
Figure 7 shows an
example of the LED bar test pattern that each digit performs.
Figure 7: Digit Segment POST