Daktronics DF-1030 - Manual (Page 11)

Introduction 1-5
1.4 Component Identification
The following terms include some of the more commonly used terms when referring
to these displays. Because Daktronics occasionally alters standard design to meet
customer needs, the actual display design may vary slightly from the illustrations
below.
This is only a brief overview. Refer to Section 4 for additional information on
maintaining the various display components.
Client: The client display contains a client driver that receives signal from the “host”
driver on the Signal IN terminals. These drivers can re-drive signal to other client
drivers.
DataMaster Controller (DM-100): The handheld keyboard like device used to set
the time, date, hold times, dimming etc. on the Rate Display. See Section 5 for more
information on the DataMaster controller.
Display address: The display address is an identification number assigned to each
driver in a network. The address is set using an 8-position binary switch on the driver
board. For single-line signs such as a Rate Display or Time & Temp display, the
address will typically be “1”. If more than one display is used, the top display is
often set to address “1” and the others are set to “2”, “3” etc. The address will be
displayed each time the display powers up.
Digit circuit board: The LEDs are mounted to a circuit board, which mounts to the
back of a digit panel. Problems with individual digits, segments or LEDs may require
accessing or replacing this board.
Host/primary: The host display contains the host driver which relays signal directly
from the DataMaster controller on its Signal IN terminals. It is the only driver
connected to the temperature/photo sensor. The Signal OUT terminal block is used to
connect to client driver. The host driver is selected by inserting the Protocol 4 plug
into the protocol jack.
LED (light emitting diode): LEDs are high-intensity, low-energy lighting units.
Mirror/slave: receives a signal from the master but does not have a driver.
Power supply: Converts AC line voltage from the load center to low DC voltage for
one or more digit circuit boards.
Protocol plug: The protocol-4 plug is inserted in the 5-pin protocol jack to select the
host driver for a set of host-client displays.