Daktronics DF-12xx - Manual (Page 21)

Electrical Installation 2-9
3. For additional operation and connection information see ED13953:
DataMaster Modem Installation Manual
Host/Client Definitions and Address Settings
Reference Drawings:
Host/Client and Master/Slave Definitions..............Drawing A-168376
4 Column MASC LED Driver Specifications..........Drawing A-166216
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 photo sensor. The “Signal OUT” terminals
are used to connect to “client drivers.” Refer to Drawing A-168376 and
Figure 8 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.
The 12 V DC terminals connected to the host driver 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.
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
Figure 8: Host, Signal Out to Client, Signal In