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quickstart guide 

HD-TX and HD-RX Series

www.crestron.com

888.273.7876

201.767.3400

Specifications subject to 

change without notice.

HD-TX and HD-RX Series

For Regulatory Compliance information, refer to

the latest version of Doc. 6860.

QUICKSTART DOC. 6861D (2025032)    08.16

HDMI Fiber-Optic Transmitters and Receivers

HD-TX3-F Front Panel Connections

Connecting the AUDIO Input Port

: Using an unbalanced 

3.5 mm TRS mini phone jack cable (not supplied), connect the 

AUDIO input port to an unbalanced audio source.

Connecting the USB HID Port

: Using a USB cable (not 

supplied), connect the USB HID port to a computer.

Connecting the HDMI IN Port

: Using an HDMI cable (not 

supplied), connect the HDMI IN port to the HDMI output port of 

the audio/video source.

Connecting the LAN Port

: Using an Ethernet cable (not 

supplied), connect the 10BASE-T/100BASE-TX LAN port to the 

LAN. Pin designations are listed below.

LAN Port Pin Designations

HD-TX3-F Front Panel Connections

4

HD-TX3-F and HD-RX3-F Connections

The specific patents that cover Crestron products are listed at 

patents.crestron.com.

Certain Crestron products contain open source software. For specific information, 

please visit www.crestron.com/opensource.

Crestron, the Crestron logo, and CresFiber are either trademarks or registered 

trademarks of Crestron Electronics, Inc. in the United States and/or other 

countries. HDMI is either a trademark or registered trademark of HDMI Licensing 

LLC in the United States and/or other countries. Other trademarks, registered 

trademarks, and trade names may be used in this document to refer to either the 

entities claiming the marks and names or their products. Crestron disclaims any 

proprietary interest in the marks and names of others. Crestron is not responsible 

for errors in typography or photography.

This document was written by the Technical Publications department at Crestron.

©2016 Crestron Electronics, Inc.

AUDIO

USB HID

HDMI IN

LAN

Audio 

source

Computer

LAN

Pin 1

Pin 8

AV 

source

LAN

HD-RX3-F Front Panel Connections

Connecting the AUDIO Output Port

: Using an unbalanced 

3.5 mm TRS mini phone jack cable (not supplied), connect the 

AUDIO output port to an unbalanced audio output device. 

NOTE

: When the HDMI IN (HD-TX3-F) or HDMI OUT 

(HD-RX3-F) port is connected or disconnected or if the HDMI 

input resolution changes, the analog audio output is muted for a 

few seconds.

Connecting the USB HID Port

: Using a USB cable (not 

supplied), connect the USB HID port to a mouse or keyboard. 

(A keyboard with a built-in touchpad or trackball is supported. 

Built-in and external USB hubs are not supported.)

Connecting the HDMI OUT Port

: Using an HDMI cable (not 

supplied), connect the HDMI OUT port to the HDMI input port of 

the receiving device.

Connecting the LAN Port

: Using an Ethernet cable (not 

supplied), connect the 10BASE-T/100BASE-TX LAN port to the 

LAN. (LAN port pin designations are listed in the table in the 

left-hand column.)

HD-RX3-F Front Panel Connections

HD-TX3-F and HD-RX3-F Rear Panel Connections

Connecting the Control Ports

: Connect the IR or COM 

control port or both as follows:
• 

IR IN (HD-TX3-F)

: Using an IR cable (not supplied), 

connect the 2-pin terminal block of the IR IN port to the IR 

output port of the control system.

• 

IR OUT (HD-RX3-F)

: Using the Crestron IRP2 emitter (not 

supplied), connect the 2-pin terminal block of the IR OUT 

port to the IR input port of the device to be controlled

• 

COM (RS-232)

: Using a data communications cable (not 

supplied), connect the 3-pin terminal block as follows:

  

-  For the HD-TX3-F, connect the COM port to the COM 

port of the control system.

  

-  For the HD-RX3-F, connect the COM port to the COM 

port of the device to be controlled.

HDMI OUT

AUDIO

USB HID

LAN

Display

LAN

Powered 

speakers

Mouse or 

keyboard

LAN

Pin 1

Pin 8

HD-TX3-F Rear 

Panel Connections

HD-RX3-F Rear 

Panel Connections

IR IN

S G

COM

TX RX

GND

MM OPTICAL

12VDC

1.5A

IR OUT

S G

COM

TX RX

GND

MM OPTICAL

12VDC

1.5A

Ground

Ground

USB port 

(for factory

 use only)

USB port 

(for factory

 use only)

Power 

supply

Fiber-optic cable

Power 

supply

Control 

system

Display

CLASS 1

LASER

PRODUCT

CLASS 1

LASER

PRODUCT

Connecting the MM OPTICAL Fiber Port

: Using a CresFiber or other 

quality 50/125 μm or 62.5/125 μm simplex multimode fiber-optic cable with 

SC connectors, connect one end of the cable to the MM OPTICAL 

connector on the HD-TX3-F and the other end of the cable to the MM 

OPTICAL connector on the HD-RX3-F.

NOTE

:  For maximum distance, the fiber-optic cable should be rated for at 

least 500 MHz*km effective modal bandwidth (EMB) at both 850 nm and 

1300 nm. Refer to the cable manufacturer’s datasheet for EMB information.

Connecting the Ground

: Connect the chassis ground lug to earth ground 

(building steel).

Connecting the 12 Vdc Power Jack

: Connect the 12 Vdc power jack to 

the PW-1215WU external power supply included with the HD-TX3-F and 

HD-RX3-F.

PIN 

SIGNAL 

PIN 

SIGNAL 

TX+ 

N/C 

TX– 

RX– 

RX+ 

N/C 

N/C 

N/C 

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