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1.

  SDI Connector

DVI-7345-TX connects to source;

DVI-7345-RX connects to display

2.

  DC IN Connector

Connect the External AC Power Adapter to this receptacle on both  

Tx and Rx units

3.

  Fiber Optic Connector

1x ST optical connector for fiber optic cable

4.

  Metal Dust Cover

Use this detachable metal cover to prevent dust buildup inside the fiber 
optic ST connector

5.

  Status Indicator LEDs:

Color

Tx Unit

Rx Unit

a.

  Link LED

Blue

On – Laser Working

On – Receiving Optical Input 
Signal

b.

  Signal LED

Blue

On – Receiving Signal from 
the SDI Source

On - SDI Signal Output is 
normal

c.

  Power LED

Red

5 VDC Power is present

5 VDC Power is present

Note: 

 The 

DVI-7345 

Transmitter units and Receiver units use the same type of enclosure and 

have the same connections and LEDs. 

Installation Instructions

This product consists of a transmitter unit and receiver unit.  These units are interconnected by means 
of a single-channel ST optical cable, utilizing 9/125μ Single-Mode fiber.  For a list of supported SDI 
standards and resolutions, please see page 4.

Note: 

 No controls are present on either transmitter or receiver.  Before attempting to use 

the extender set, please verify that the source functions properly with the display device by 
connecting the source and display devices together using a short coaxial cable.

1.)

  First, remove the locking metal dust covers from the ST fiber optic connectors on the Tx and 

Rx units.  To do this, push in, turn 45˚ counterclockwise, then pull the cover off.

2.)

  Connect the BNC SDI connector on the transmitter unit to the SDI output port of the signal source.

3.)

  Each unit has one (1) optical port.  Connect an ST-terminated fiber optic cable between the 

Transmitter Unit and the Receiver Unit.

4.)

  Connect the BNC SDI connector on the receiver unit to the SDI input port of the destination 

device.

5.)

  Connect the External AC Power Adapters to the power input jack on both Tx and Rx units.

6.)

  Apply power to the destination device, then apply power to the source device.  The signal should 

be available for the display or other destination device within a few seconds.

Note: 

 Always install the dust covers on the ST fiber connectors when not in use.

3G-SDI Fiber Optic Extender, 1x ST

Quick Start Guide

DVI-7345

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