16
Electrical Installation
For sections that are too far apart to use internal interconnects, the signal may be re-driven, or
“daisy-chained”. Typically, the Game Clock section would receive primary signal from the
control location, and signal cable could then branch out to the HOME score and GUEST score
sections. From there, signal can be re-driven once more to the DOWN/TO GO and BALL
ON/QTR sections. Refer to
for an example of re-driving signal.
Note:
For radio-controlled systems, the radio receiver may be located in one section,
while signal cable is routed to the other sections as needed.
3.5 Lightning Protection
The use of a disconnect near the scoreboard to completely cut all current-carrying lines
significantly protects the circuits against lightning damage. In order for this system to
provide protection, the power must be disconnected when the scoreboard is not in use.
The control console should also be disconnected from power and from the signal junction box
when the system is not in use. The same surges that may damage the scoreboard’s driver can
also damage the console’s circuitry.
Figure 19:
Re-driving Signal (Rear View)
