CH-304TX & RX

Digital Audio Extender over Single CAT5/6

Operation Manual

DISCLAIMERS
The information in this manual has been carefully checked andis believed to be accurate. Cypress Technology assumes noresponsibility for any infringements of patents or other rights of thirdparties which may result from its use.
Cypress Technology assumes no responsibility for any inaccuracies
that may be contained in this document. Cypress also makes nocommitment to update or to keep current the information containedin this document.
Cypress Technology reserves the right to make improvements to thisdocument and/or product at any time and without notice.

COPYRIGHT NOTICE
No part of this document may be reproduced, transmitted,
transcribed, stored in a retrieval system, or any of its part translated
into any language or computer file, in any form or by any means—electronic, mechanical, magnetic, optical, chemical, manual, orotherwise—without express written permission and consent fromCypress Technology.
© Copyright 2011 by Cypress Technology.
All Rights Reserved.
Version 1.1 August 2011

TRADEMARK ACKNOWLEDGMENTS
All products or service names mentioned in this document may be
trademarks of the companies with which they are associated.

SAFETY PRECAUTIONS
Please read all instructions before attempting to unpack, install or
operate this equipment and before connecting the power supply.
Please keep the following in mind as you unpack and install thisequipment:•

Always follow basic safety precautions to reduce the risk of fire,electrical shock and injury to persons.

•

To prevent fire or shock hazard, do not expose the unit to rain,moisture or install this product near water.

•Never spill liquid of any kind on or into this product.

•Never push an object of any kind into this product through any
openings or empty slots in the unit, as you may damage parts
inside the unit.

•Do not attach the power supply cabling to building surfaces.

•Use only the supplied power supply unit (PSU). Do not use the PSU
if it is damaged.

•

Do not allow anything to rest on the power cabling or allow any
weight to be placed upon it or any person walk on it.

•To protect the unit from overheating, do not block any vents oropenings in the unit housing that provide ventilation and allow forsufficient space for air to circulate around the unit.

REVISION HISTORY
VERSION NO.

DATE DD/MM/YY SUMMARY OF CHANGE

VS125/11/11

First release

CONTENTS
1. Introduction�������������������������������������������� 1
2. Applications������������������������������������������� 1
3. Package Contents�������������������������������� 1
4. System Requirements���������������������������� 1
5. Features�������������������������������������������������� 1
6. Operation Controls and Functions������� 2
6.1 Transmitter Front and Rear Panels��2
6.2 Receiver Front and Rear Panels�����3
6.3 Transmitter and Receiver TopPanels������������������������������������������������������4
6.4 RJ45 Pin Assignment������������������������4
7. Connection Diagram���������������������������� 5
8. Specifications���������������������������������������� 6
9. Acronyms����������������������������������������������� 6

1. INTRODUCTION
The Digital Audio Extender are useful for sending the digital audio
signal up to 150m away at high quality. The units can switch between
Coaxial and Optical digital signals and can be powered by either USBor power adaptor allowing users flexibility of choice between powersources.
With its elegant and compact design, user friendly operation and easy
installation, the Digital Audio Repeaters are ideal tool for extending
digital audio from one location to another.

2. APPLICATIONS• Coaxial or Optical digital audio signal extension over single CAT5/6
cable up to 150m.

3. PACKAGE CONTENTS• Digital Audio Transmitter over single CAT5/6 cable• Digital Audio Receiver over single CAT5/6 cable• 5 V/1 A DC power adaptor• Operation manual

4. SYSTEM REQUIREMENTS
Coaxial/Optical audio input source and amplifier or speaker output
and single CAT6 cable for connecting transmitter and receiver.

5. FEATURES• Supports Coaxial or Optical digital audio S/PDIF signal• Supports stereo and multi-channel (7.1, DTS, Dolby Digital etc.)
digital audio• Supports industry standard Category 5/5e/6 cable• Digital audio S/PDIF performance sampling rate 96 kHz• Supports single Coaxial input to Coaxial signal output• Supports single Optical input to Optical signal output

1

6. OPERATION CONTROLS AND FUNCTIONS
6.1 Transmitter Front and Rear Panels

CoaxialInOpticalInDC 5V

123USB5V

4CAT6 Out5

1 Coaxial In
Connect to source audio equipment such as DVD or Blu-ray
players with a Coaxial digital audio output.

2 Optical In
Connect to source audio equipment such as DVD or Blu-ray
players with an Optical digital audio output.

3 DC 5V
Plug the 5V DC power supply into the unit and connect theadaptor to an AC outlet.
Note: only one unit out of the two needs to be powered andonly one kind of power out of two needs to be used.

4 USB 5V
Connect with a USB cable for power supply from computer ornotebook.

5 CAT6 Out
Connect to the receiver unit with a single CAT6 cable.

2

6.2 Receiver Front and Rear Panels
USB5V

1CAT6 In

CoaxialOut

Optical
Out

DC 5V

2345

1 USB 5V
Connect with a USB cable for power supply from computer ornotebook.

2 CAT6 In
Connect to the receiver unit with a single CAT6 cable.

3 Coaxial Out
Connect to an amplifier or active speakers with coaxial input.

4 Optical Out
Connect to an amplifier or active speakers with optical input.

5 DC 5V
Plug the 5V DC power supply into the unit and connect theadaptor to an AC outlet.
Note: only one unit out of the two needs to be poweredand only one kind of power out of two needs to be used.

3

6.3 Transmitter and Receiver Top Panels

USB
5VUSB
5V

CAT6 Out

CAT6 In1

1 Power LED
The blue LED will light when the device is powered.

6.4 RJ45 Pin Assignment
TRANSMITTERRECEIVER

Pin

Definition

PinDefinition

1Signal A

1Signal A

2Signal B

2Signal B

3Signal C

3Signal C

4GND

4GND

5GND

5GND

6Signal D

6Signal D

7DC5V

7DC5V

8DC5V

8DC5V

Cat5/5e/6150m

47. CONNECTION DIAGRAM
DVD/Blu-ray Player

CD Player

Coaxial Connection

Optical Connection

Transmitter
Power Supply

ReceiverCoaxial Connection

Optical Connection

Amplifier58. SPECIFICATIONSTRANSMITTER
Input

1× Coaxial & 1× Optical

Output

1× CAT6

RECEIVER
Input

1× CAT6

Output

1× Coaxial & 1× Optical

CAT6 Cable Distance

150 m

Sample Rate

32/44.1/48/88.2 & 96 KHz

ESD Protection

Human Body

± 6kV (air-gap dis-Model:charge)± 4kV (contact discharge)

Dimension

22 mm (H) × 70 mm (W) × 50 mm (D)/each

Chassis Material

Plastic

Silkscreen Color

WhiteWeight

50 g/each

Operating Temperature

0 °C~45 °C/32 °F~104 °F

Storage Temperature−20 °C ~ 60 °C/−4 °F~140 °F

Relative Humidity

20~90 % RH (non-condensing)Power Consumption

2W

9. ACRONYMS
ACRONYMCOMPLETE TERM

CAT5/6

Category 5 / 6 Cable

6CYPRESS TECHNOLOGY CO., LTD

Home page: http://www.cypress.com.tw