Daktronics DF-12xx User Manual
Page 31
Electrical Installation
3-11
Host/Client Definitions
One driver at each sign installation is designated as the “host driver.” This driver
receives its signal directly from the controller on the “Signal IN” terminals, and it is
the only driver that is connected to the light sensor. The “Signal OUT” terminals are
used to connect to “client drivers.” Refer to Drawing A-168376 and
Figure 13
for an
illustration of the host/client display connection.
Select the host driver by inserting the Protocol 4 plug into the 5-pin protocol jack
(J20.) For protocol jack location, refer to Drawings A-166216, A-167237 or A-
184475 on your specific display driver.
The 12 V DC terminals connected to the host driver (see “Signal Connections” in
Figure 5
) run to the controller junction box. This output is used to power the
DataMaster 100 controller.
All other drivers in the display system are client drivers. These drivers receive signal
from the host driver on the Signal IN terminals and can re-drive this signal to other
“client drivers” on the Signal OUT terminals.
Some multiple-module signs use “mirror displays.” These displays do not contain a
driver and may use either the client or host digit outputs. Refer to Drawing A-
168376 for an illustration of the host/client driver and primary/mirror display setups.
Some displays only use one driver for multiple product lines in one common cabinet.
In this case, the signal to each line is already connected.
Address Settings
The address of each driver is set using an 8-position DIP-switch (S1), and the
address is based on that driver’s position in the sign or display system. If a single-
line sign is used, the address will typically be Address “01.” This means that switch
1 is turned “ON” and the remaining 7 switches are in the “OFF” position. This is the
default address set when each display is shipped. In multiple-product displays, the
address determines which line of information is shown on the driver’s digits. The
switch is set using a binary address. Use the table and the examples for setting the
address. Drawing A-227502 shows how to set the address on the drivers used in
DataTime and DataMaster products.
Figure 13: Host, Signal Out to Client, Signal In