Daktronics Galaxy AF-3050 Series, Руководство пользователя

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Electrical Installation
3-1
Section 3: Electrical Installation
Only a qualified individual should terminate power and signal cable within this Daktronics
display.
The Daktronics engineering staff must approve
any changes made to the display. Before altering the
display, submit detailed drawings for the proposed modifications to the Daktronics engineering staff
for evaluation and approval or the warranty will be rendered null and void.
3.1 Common Connectors in the Display
The power and signal connections in the displays use many different types of
connectors. Take special care when disengaging any connector so as not to
damage the connector, the cable or the circuit board.
Figure 8: Ribbon
Cable Connector
When unplugging a connector plug from a jack,
do not pull on the wire or
cable; pull on the jack itself. Pulling on the wires may damage the connector.
The following information presents some common connectors encountered
during display installation and maintenance:
1. Ribbon Cable Connectors:
Figure 8 on the right illustrates a typical ribbon connector. To disconnect
the ribbon cable, push the metal clips on the sides to unlock and remove
the jack.
Figure 9: Termination
Block
Before replacing a ribbon cable connector, spray it with Deoxit
™
contact
cleaner to remove any foreign matter that may cause signal problems. In
addition, apply a generous amount of Cailube
™
protector paste to the
plug before inserting it into the jack. This paste will protect both the
plug and the jack from corrosion.
2. Termination Blocks:
Termination blocks are usually used to connect internal power and
signal wires to wires of the same type coming into the display from an
external source. Most signal wires will come with forked connectors
crimped to the ends of the wire. Power wires need to have one-half inch
of insulation stripped from the end of the wire prior to termination.
Tighten all screws firmly to ensure a good electrical connection. Refer to
Figure 9 on the right.
Figure 10: Phoenix
Connector
3. Phoenix
ä
-Style Connectors:
Phoenix-style connectors, which are usually green, are often used for
signal termination on circuit boards. Refer to
Figure 10 on the right.
Strip one-quarter inch of insulation from the wire prior to termination.
To remove a wire, turn the above screw counter-clockwise to loose the
connectors grip on the wire. To insert a wire, push the bare wire into the
connector and turn the above screw clockwise to lock the wire into
place.