Daktronics DataTime Outdoor LED Time & Temperature Displays - Manual (Page 45)

Glossary
The following list includes 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. This is only a brief overview. Refer to Section 4: for
additional information on maintaining the various display components.
Client: 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 hand-held keypad device used to set the time, date, hold
times, dimming etc. on the DataTime display. Refer to Section 6: for more information on the
DataMaster controller.
Display Address: An identification number assigned to each driver in a network. The address is set
using an 8-position binary switch. For single-line signs such as a Time & Temp display, the address
will typically be “1.” The address will be displayed each time the display powers up.
Digit Circuit Board: The board mounted to the back of a digit panel and containing the LEDs. It can
be made up of an entire digit or as individual segments of a digit.
Host: Contains the 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 terminals
are used to connect to client driver. The host driver is selected by inserting the Protocol 4 plug into
the protocol jack.
Light emitting diode (LED): High-intensity, low-energy lighting units.
Power Supply: Converts AC line voltage from the load center to low DC voltage for one or more
digit circuit boards.
Protocol plug: A plug inserted in the 5-pin protocol jack to select the host driver for a set of host-
client displays.
Glossary 41