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FOXBOX 4G Tx/Rx • Installation and Operation

Installation and Operation, cont’d

2-14

FOXBOX 4G Tx/Rx • Installation and Operation

2-15

DVI signals run at a very high frequency and are especially

prone to bad video connections, too many adapters, or excessive

cable length. To avoid the loss of an image or jitter, follow these

guidelines:

• Do not exceed 16.4 feet (5 meters) on the input or buffered

loop-through of the FOXBOX 4G DVI transmitter or the

output of the FOXBOX 4G DVI receiver.

• Use only the cable designed for DVI signals that is

supplied by Extron.

• Limit or avoid the use of adapters.

• Use only approved DVI/HDMI connectors.

Use only cables speciﬁcally intended for DVI or HDMI

interfaces. Use of non-DVI or non-HDMI cables or

modiﬁed cables can result in a missing video output.

RS-232 Over Fiber connection

Do not tin the wires!

Controlling

Device

Ground ( )

Receive (Rx)

Transmit (Tx)

Ground ( )

Receive (Rx)

Transmit (Tx)

Bidirectional

FunctionPin

Gnd

Transmit data

Receive data

Signal ground

NOTE Cross the Tx and Rx lines once between the source

and the target.

ALARM

Tx Rx 1 2

RS-232

OVER FIBER

Figure 2-8 — RS-232 connectors

The RS-232 Over Fiber port is for transmission of serial

signals, such as projector control signals, between the

transmitter and receiver.

The length of exposed wires is critical. The ideal length

is 3/16" (5 mm).

•

If the stripped section of wire is longer than 3/16", the

exposed wires may touch, causing a short circuit.

•

If the stripped section of wire is shorter than 3/16",

wires can be easily pulled out even if tightly fastened

by the captive screws.

Alarm outputs connection