Daktronics DF-1020 - Manual (Page 45)

DM-100 5-3
Controller
Wire Control
Reference Drawings:
Riser Diagram, Outdoor Wire Control ...................Drawing A-164988
Riser Diagram, Indoor Wire Control ......................Drawing A-175342
For display systems using a base-of-sign
connection, the DataMaster 100
controller, shown with a connecting cable
in Figure 12, 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, and
the controller connects with the box via
TIA/EIA-232 signal cable (formerly RS-
232). The controller draws its power from
the display itself. Refer to Drawings A-
175342 and A-164988 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 another line, also 22 AWG shielded
cable in conduit. 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. For complete details on sign
operation, refer to Section 6.
Figure 12: DataMaster 100 Controller
with Signal Cable