Daktronics DF-4000 - Manual (Page 29)

Gas Price 5-3
Wire Control
Reference Drawings:
Address Dip Switch Settings .........................................Drawing B-256001
For display systems using a base-of-sign
connection, the DataMaster 100
controller, shown with a connecting cable
in Figure 7, plugs directly into an outdoor
junction box, where the operator keys in
instructions for the sign. Typically, the
j-box is mounted to the display pedestal or
column support. The controller draws its
power from the display itself. Refer to
Drawing B-256001 for complete details
on both indoor and outdoor direct-wire
installations.
Signal from the junction box enters the
sign and travels to the first display driver
over 2-pair, shielded signal cable. The 22
AWG cable must be enclosed in conduit.
Re-driven signal travels from the driver of
the first display to the driver of the next
over RJ14 flipped signal cable. The
process repeats for as many displays as
there are in the system.
Once instructions have been input into the display, the driver's memory retains the
data, and the controller can be unplugged. The sign will continue to operate on the
stored information.
Signal cabling is similar for systems where the DataMaster displays will be operated
remotely from a building location, except that the controller requires a wall pack
transformer. The transformer plugs into both the hand-held controller and into a 120
V AC outlet. The DataMaster controller also connects to a junction box to send
signal to the display, but the j-box will be located within the store or office. The
control location can be up to 2000 feet from the actual sign.
The operator changes the display by entering current prices, rates, and operating
instructions on the keypad of the DataMaster controller.
Figure 7: DataMaster 100 Controller
with Signal Cable