Daktronics AF-3165-34-RGB Manuel d'utilisateur télécharger pdf (Page 23)

Electrical Installation

3-3

RS422

This cable is a 4-conductor shielded cable used to transmit an RS422 signal

(Daktronics part number W-1234). This shielded cable consists of paired wires. They

should not be subjected to mechanical flexing after installation. This cable is not for

direct burial and should have one of the following routings:

• Dedicated metallic conduit – power and signal cable cannot be run in the

same conduit

• Inside buildings − if cable is not in conduit, keep away from interference

signals

With interference signals (such as power conductors, intercom, etc.) typically a two-

ot separation is required. The maximum length of an RS422 signal cable is 4,000

feet (1.22 km).

Modem

The modem option will use standard telephone cable routed through conduit. Power

and phone cable cannot be run in the same conduit. The local telephone company

will need to assist in this installation. Ask the telephone company which color is used

for the TIP wire and which color for the RING wire for signal hook up.

Note: T

he telephone lines must be dedicated lines and not run through a switch

board/communications system.

Fiber Optic

This cable is a 4-fiber cable (Daktronics part number W-1376). Two fibers are used

for display communications and the other two are saved for spares. The cable may be

either direct burial or routed in conduit but it should not be subjected to mechanical

flexing. The fiber can be routed in the same conduit as the power. The maximum

length of a fiber optic cable is 2,000 feet (611.6 meters).

Radio

The Server radio connected to the computer requires an 18-gauge six-conductor

cable (Daktronics part number W-1370). Four conductors will be used for the signal

and a two for the power. These wires need to be in conduit when exposed to outdoor

conditions to the Server radio. The maximum distance from the J-box to the Server

radio is 1000 feet (305.8 meters).

The Client radio at the display comes with cable that is rated for outdoor use and

doe

s not need to be in conduit. Note: Secure excess cable to prevent it from being

pulled loose by weather or vandalism.

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Daktronics AF-3165-34-RGB Manuel d'utilisateur Page 23