Daktronics BB-2140, Display Manual

Electrical Installation

4

3  Electrical Installation

CAUTION: Only qualified individuals should perform routing and termination to the 

display. Electrical contractors are responsible for ensuring that all electrical work meets 

or exceeds local and national codes. Daktronics engineering staff must approve all 

changes or the warranty will be void.

Installation Overview

Electrical installation involves routing power and control signal wiring through separate 

conduit or wire ways. 

Note: 

Control signal cable and some junction boxes are not provided as part of this 

system and can be purchased locally or from Daktronics.

Power

Install a grounded receptacle near the equipment so that the power cord can easily 

reach it. 
Each shot clock control enclosure comes with a 120 VAC or 240 VAC twist lock power 

plug. The power plug will need to be attached to a 120 VAC or 240 VAC power cord (by 

the customer) as follows:
• 

120 VAC wiring:

 Connect black wire to copper terminal, white wire to nickel terminal, 

and green wire to green terminal. 

• 

240 VAC wiring:

 Connect black wire to copper terminal, red wire to copper terminal, 

and green wire to green terminal. 

Grounding

All components of a display system – including but not limited to displays, control 

equipment, and connected peripheral equipment – must be electrically grounded. 

Only qualified individuals may perform electrical work, including verification of ground 

resistance. Daktronics is not responsible for improper grounding or damage incurred as a 

result of improper grounding.
Grounding methods must meet the provisions of all applicable local and national codes. 

Inspect and verify all grounding methods meet the provisions of all applicable local and 

national codes.
Proper grounding is necessary for reliable equipment operation and general electrical 

safety. Failure to properly ground the display system may void the warranty, disrupt 

operation, damage equipment, and cause bodily harm or death.

Power-On Self-Test (POST)

The display performs a self-test each time that power is turned on and the control 

console is powered off or not connected. If the control console is connected and 

powered on, the self-test does not run, and data from the control console is shown on 

the display after a few seconds. Each self-test pattern will vary depending on the model, 

the number of drivers, and types of digits. 

Radio Settings

If a radio receiver is installed, the radio broadcast settings (“b1”) and the channel 

settings (“C1”) will be displayed in the game clock digits during the POST. These values 

must match the settings in the control console. Refer to 

Radio Control (p�5)

 and 

Control Console (p�2)

.