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Fox Tx/Rx AV • Setup Guide

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CAUTION:

  Installation and service must be performed by authorized personnel only.

These instructions provide a quick setup guide for the Extron

®

 FOX Tx/Rx AV. They are for 

use by experienced installers.
The FOX Tx AV and FOX Rx AV are a high performance, low resolution video, audio, and 
data (RS-232) transmitter (Tx) and receiver (Rx) pair. Both the transmitter and receiver are 
available in single mode (SM) and multi-mode (MM) models. The SM models transmit signals up to 30 km (18 miles) over 
fiber optic cable, at rates up to 2 Gbps.

WARNING:

  The FOX Tx/Rx AV outputs continuous invisible light (Class 1 rated), which may be harmful and dangerous 

to the eyes; use with caution. 

 

Do not look into the rear panel fiber optic cable connectors or into the fiber optic cables themselves.

NOTES:

 The transmitter and receiver must be compatible. Both must be MM or both must be SM. It is not possible to mix 

types. 

 

Plug the attached dust caps into the optical transceivers when the fiber optic cable is unplugged.

To install, cable, and power on the transmitter/receiver pair:

Step 1

Turn off all equipment or disconnect it from power sources. Mount the transmitter and receiver as required.

Step 2

Connect a low resolution video source to the transmitter using the input BNC connections for composite or component 
sources. S-video can be connected using either the BNC connectors or the 4-pin mini DIN. (See the figure below).

Y/VID

R-Y

S-VID

B-Y/C

Y/VID

S-video (DIN)

R-Y

B-Y/C

Y/VID

R-Y

S-VID

B-Y/C

S-VID

S-video (BNC)

R-Y

Y/VID

R-Y

S-VID

B-Y/C

S-VID

Component

Y/VID

R-Y

S-VID

B-Y/C

S-VID

Composite

R-Y

B-Y/C

Step 3

Connect balanced or unbalanced, stereo or mono audio input to the transmitter using the 5-pole, 3.5 mm captive screw 
connector (see the figure below).

Balanced Audio

Tip

Ring

Tip

Ring

LR

Sleeves

Unbalanced Audio

Tip

Sleeve

Sleeve

Tip

LR

Step 4

If required, connect an alarm system to the 2-pole captive screw connector (marked Alarm) on the transmitter.

Step 5

To configure the transmitter and receiver using RS-232 commands, connect a control device to the three 
right poles ( , Tx, and Rx), labeled RS-232 Remote, on the RS-232 captive screw connector of the transmitter 
(see the figure at right). Alternatively, the host device can be connected through the front panel Config 
port or the corresponding ports on the receiver (see step 

13

). These ports may also be used to configure the 

system with the FOX Extender Windows

®

 Control Program.

Step 6

To pass through RS-232 commands to remote devices, independently of the FOX Tx/Rx AV, use the three left 
poles (Tx, Rx, and  ), labeled RS-232 Over Fiber. The ground is common for both sets of RS-232 signals (see 
the figure at right).

REMOTE

Tx Rx

Tx Rx

OVER FIBER

RS-23

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