Daktronics FB-2006, Руководство пользователя, Страница: 28 / 76

22 Electrical Installation
At the Signal In terminal block on the printed circuit board (PCB), connect the red
signal wire to the positive terminal, the black to the negative terminal, and the shield
(silver) wire to the shield terminal.
It is important that the shield wire is
properly connected to the shield
terminal on the signal surge
arrestor card.
Figure 4 on the
previous page illustrates the PCB
and the terminal blocks.
For signal cable, Daktronics
recommends, as a minimum, single-
pair, shielded cable, 22 AWG
(Daktronics part number W-1077).
Two-pair shielded cable
(Daktronics part W-1234) is
preferred.
Connections Between Sections

Note: The power and signal interconnect harnesses referenced in the following
section are factory-installed and in place. Only the final connection between
scoreboard modules is required for field installation. This information is presented
to document the complete installation procedure.
Models MS-2014 and MS-2018 have been configured to operate with a master/slave
driver system. Master and slave drivers function identically, but slave drivers lack
the power terminal block and signal surge arrestor card. The two drivers have been
designed to simply plug into each other via an interconnect harness, the slave
receiving redriven power and signal from the master driver. Larger scoreboards can
have as many drivers as they require.
All driver interconnect harnesses are factory installed. No additional connection is
necessary (The harness emerges from the bottom of the master driver enclosure, and
the J42 jack from the master is connected to the slave's P43 plug.). Likewise, signal
cables from drivers to digit also have been factory-installed, and no additional
connection is necessary.
For access and connection, refer to the component locations drawings and follow this
procedure:
1. Begin electrical installation by routing power and signal cables into the
scoreboard through the rear of the clock/score section. There are two
knockouts for conduit connection on the back panel. There are knockouts
on the side of the cabinet as well, if connection there is more desirable.
Both cables terminate inside the driver enclosure.
2. To access the internal components, open the PERIOD panel on the bottom
row of the section and remove the cover from the driver enclosure.
Figure 4: Signal Surge Arrestor Card