Daktronics FB-2700 Series, Installation Manual, Page: 24 / 60

Electrical Installation
20
Power-On Self-Test (POST)
The display performs a self-test each time that power is turned on and the control
console is powered off or not connected. If the control console is connected and
powered on, the self-test does not run, and data from the control console appears on
the display after a few seconds. Each self-test pattern will vary depending on the model,
the number of drivers, and types of digits. Figure 21 shows an example of the LED bar test
pattern that each digit performs.
Figure 21: Digit Segment POST
Wired Signal Connection
Copper Signal
Route copper signal cable through the
conduit knockout on the rear of the display
to the signal surge arrestor card ( Figure 22 ),
located in the primary driver enclosure.
At the
SIGNAL IN terminal block, connect
red signal wire to positive (+) and black
signal wire to negative (–).
Note: Ensure shield (silver) wire is properly
connected to the SHLD terminal.
To connect signal to additional nearby
displays, such as delay of game clocks, or
to connect multiple modular scoreboard
sections, route signal wire in conduit from
SIGNAL OUT of the signal surge arrestor card
in the primary display to SIGNAL IN on the
signal surge arrestor card in the secondary display.
At a minimum, single-pair, shielded cable, 22 AWG (part # W-1077) is recommended.
Two-pair shielded cable (part # W-1234) is preferred.
SIGNAL OUT
SHLD
SHLD
-
+
SHLD
SHLD
-
+
SIGNAL IN
Figure 22: Signal Surge Arrester Card