Daktronics DF-12xx - Manual (Page 24)

3-4 Electrical Installation
3.3 Lightning Protection
The use of a disconnect near the display to completely cut all current-carrying lines
significantly protects the circuits against lightning damage. The National Electrical
Code also requires it. In order for this device to provide protection, the power must
be disconnected when the display is not in use. The control console should also be
disconnected from power and from the signal j-box when the system is not being
used. The same surges that may damage the display's driver can also damage the
driver console's circuit.
3.4 Signal Connection
Reference Drawings
4 Column MASC LED Driver Specifications................ Drawing A-166216
8 Column MASC LED Driver Specifications................ Drawing A-167237
16 Col. MASC Driver Specification.............................. Drawing A-184475
Enclosed Driver, 4 Column Reference........................ Drawing A-184918
Quick Install, DF-1020 Gas Price Displays ................. Drawing A-189768
Route power and signal cables into the display from the side or rear. There are
knockouts for
1 /
2
" and 3 /
4
" conduit fittings on the sides of all DataMaster cabinets
and on the back panels. All power and signal wiring terminates at the driver
enclosure.
Figure 5: DataMaster Driver Enclosure with 4-Column Driver