CYP DCT-24 User manual

DCT-24
USB Audio Center
Operation Manual
Operation Manual

DISCLAIMERS
The information in this manual has been carefully checked and
is believed to be accurate. Cypress Technology assumes no
responsibility for any infringements of patents or other rights of third
parties which may result from its use.
Cypress Technology assumes no responsibility for any inaccuracies
that may be contained in this document. Cypress also makes no
commitment to update or to keep current the information contained
in this document.
Cypress Technology reserves the right to make improvements to this
document 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 le, in any form or by any means—
electronic, mechanical, magnetic, optical, chemical, manual, or
otherwise—without express written permission and consent from
Cypress 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 this
equipment:
• Always follow basic safety precautions to reduce the risk of re,
electrical shock and injury to persons.
• To prevent re 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 to walk on it.
• To protect the unit from overheating, do not block any vents or
openings in the unit housing that provide ventilation and allow for
sufcient space for air to circulate around the unit.
REVISION HISTORY
VERSION NO. DATE DD/MM/YY SUMMARY OF CHANGE
VR0 07/12/14 Preliminary Release
VS0 20/06/13 Updated Text & Diagrams

CONTENTS
1. Introduction............................................ 1
2. Applications........................................... 1
3. Package Contents ................................ 1
4. System Requirements............................ 1
5. Features.................................................. 2
6. Operation Controls and Functions....... 3
6.1 Front Panel.........................................3
6.2 Rear Panel .........................................4
6.3 RS-232 Protocol..................................5
6.4 RS-232 Commands............................6
7. Connection Diagram ............................ 7
8. Specications ........................................ 8
8.1 Technical Specications ..................8
8.2 Audio Specications.........................9
9. Acronyms ............................................. 10

1
1. INTRODUCTION
The USB Audio Center allows multiple audio sources to be controlled,
switched and outputted to a variety of audio equipment. With 3 audio
inputs (USB, Line-level RCA and 3.5mm mini-jack and 2 audio outputs
(Line-level RCA and 6.3mm headphone output) you can integrate
and convert USB or analog stereo audio sources to Line-level output
and 6.3mm headphone simultaneously.
2. APPLICATIONS
• Multiple input/output Audio Center
• PC/Mac USB audio input support
• Show event audio set up
• Home theater
• Educational/Lecture presentation
3. PACKAGE CONTENTS
• 1×USB Audio Center
• 1×5 V/3 A DC Power Adaptor
• 1×6.3mm to 3.5mm Jack
• 1×3.5mm to D-sub 9-pin Cable
• 1×Driver CD-Rom
• Operational Manual
4. SYSTEM REQUIREMENTS
Audio source equipment such as PC (USB), DVD player or MP3 Player
and audio output devices such as active speakers, amplier or
headphones.

2
5. FEATURES
• Supports Digital to Analog audio Conversion (DAC)
• Supports USB sampling rate up to 192 kHz
• Simultaneous output on both Line out and 6.3mm headphone
output
• Supports RS-232 control
• Total Harmonic Distortion (THD): Less than 100 dB (−20 dBFs)
• Volume control of analog and headphone outputs
• Direct power ON/OFF and mute button on unit
• Headphone output fades in after system is muted
• 6.3 mm headphone output (3.5 mm mini-jack adaptor supplied)
• Compact design and easy to use

3
6. OPERATION CONTROLS AND FUNCTIONS
6.1 Front Panel
POWER LINE USB
POWER HEADPHONE
MUTESOURCE
1 2 3 4 5 6
1POWER/SOURCE: Press to turn on the device or to put it into
standby mode. Turn left or right to select the audio source (3.5mm
Line-level/ Line in/ USB), the LED will illuminate to indicate the
selected audio source.
2HEADPHONE OUT: Connect to professional headphones with a
6.3mm jack for user to enjoy high quality audio. Use the supplied
6.3 mm to 3.5 mm adapter for headphones with a 3.5mm mini-jack
connection.
3LINE-LEVEL IN: Connect with a 3.5mm mini-jack cable to any audio
equipment such as a smart phone or MP3 Player.
4POWER LED: This LED will illuminate when the Power is switched ON.
5LINE-LEVEL/LINE/USB LEDs: The LED will illuminate to indicate the
selected audio source.
6MUTE/VOLUME: Turn to adjust the volume levels. Press to Mute the
audio, the input LED indicators will turn off automatically. Turn left
or right to un-mute the audio, the input LED indicators will illuminate
to the last source selected.

4
6.2 Rear Panel
RS-232
LINE IN LINE OUT
DC 5V
USB
RLRL
1 2 3 4 5
1DC 5V: Connect the 5V DC power supply to the unit and plug the
adaptor into an AC outlet.
2RS-232: Connect via the supplied 3.5mm D-sub 9-pin adaptor
cable to a PC/Laptop or RS-232 control system for RS-232 control.
3USB: Connect to a PC/Mac source for USB audio.
Connect to a PC with a USB cable for rmware update. Press and
hold down the 'POWER/SOURCE' wheel and then plug the 5V DC
power supply to the unit, the system will enter into rmware update
mode. Run the software on the supplied CD-Rom and follow the
on-screen intructions to install the driver (PC/Windows only).
4LINE IN: Connect the L/R IN to an analog stereo source such as a
CD or media player.
5LINE OUT: Connect the L/R OUT to amplier or active speakers with
RCA jack cables.

5
6.3 RS-232 Protocol
USB AUDIO CENTER
►
◄
REMOTE CONTROL
PIN Assignment PIN Assignment
1 NC 1 NC
2TxD 2RxD
3RxD 3TxD
4 NC 4 NC
5 GND 5 GND
6 NC 6 NC
7 NC 7 NC
8 NC 8 NC
9 NC 9 NC
Baud Rate: 19200 bps
Data bit: 8-bits
Parity: None
Stop Bit: 1
Flow Control: None

6
6.4 RS-232 Commands
COMMAND DESCRIPTION
PORT 00 Switch Front In
PORT 01 Switch Line In
PORT 02 Switch USB In
VOL 00 Volume controller
VOL 01~160 Volume controller
POWER 00 Power Off
POWER 01 Power on
MUTE 00 Mute Off
MUTE 01 Mute On
FIX 00 LINE Out volume levels
FIX 01 LINE Out x level
ME 03 Reset to default
HPR 00~05 HPR 00=16Ω, HPR 01=32Ω, HPR 02=64Ω,
HPR 03=200Ω, HPR 04=300Ω, HPR 05=600Ω
INFO Display the current status and F/W version
?Display all available commands

7
7. CONNECTION DIAGRAM
FRONT
POWERLINE USB
POWER HEADPHONE
MUTESOURCE
Line-level
Input
Smartphone or
MP3 Player
Headphones
Headphone
Output
REAR
SERVICE
LINE IN LINE OUT
DC 5V
USB
RLRL
Laptop
USB
Connection
Stereo
Analog
Output
RS-232
Power
Supply
AV Receiver
Stereo
Analog
Input
CD Player
PC

8
8. SPECIFICATIONS
8.1 Technical Specications
Input Ports 1×3.5 mm Mini-jack, 1×L/R (Analog
Stereo 2RCA), 1×USB Type B, 1×RS-232
Output Ports 1×L/R (Analog Stereo 2RCA), 1×6.3 mm
Headphone Jack
Audio Input/Output Format LPCM 2CH
Stereo Input/Output Level 2 Vrms ± 10%
USB Audio Sampling Rates Up to 192 kHz
THD+N <0.01%
Frequency Response ±1dBFs
SNR >80dB
Crosstalk <-70dB
ESD Protection Human body model:
±8 kV (air-gap discharge)
±4 kV (contact discharge)
Power Supply 5 V/3 A DC (US/EU standards, CE/FCC/
UL certied)
Dimensions 145 mm (W)×113mm (D)×30mm (H)/
Excluding Connector
145 mm (W)×128mm (D)×30mm (H)/
Including Connector
Weight 375 g
Chassis Material Aluminum
Color Black
Operating Temperature 0 ˚C~40 ˚C
Storage Temperature −20 ˚C~60 ˚C / −4 ˚F~140 ˚F
Relative Humidity 20 ~ 90 % RH (non-condensing)
Power Consumption 8.5 W

9
8.2 Audio Specications
INPUT
LEVEL
OUTPUT
TERMINAL CHANNEL
OUTPUT
SAMPLING
RATES
OUTPUT
LEVEL THD+N
FREQUENCY
RESPONSE SNR
CROSS-
TALK
Line
2Vrms
Line
L
N/A
1.8 ~2.2Vrms <0.01% ±1dBFS >80dB <-70dB
R1.8 ~2.2Vrms <0.01% ±1dBFS >80dB <-70dB
Headphone
L
N/A
1.8 ~2.2Vrms <0.01% ±1dBFS >80dB <-70dB
R1.8 ~2.2Vrms <0.01% ±1dBFS >80dB <-70dB
3.5mm
Line
2Vrms
Line
L
N/A
1.8 ~2.2Vrms <0.01% ±1dBFS >80dB <-70dB
R1.8 ~2.2Vrms <0.01% ±1dBFS >80dB <-70dB
Headphone
L
N/A
1.8 ~2.2Vrms <0.01% ±1dBFS >80dB <-70dB
R1.8 ~2.2Vrms <0.01% ±1dBFS >80dB <-70dB

10
9. ACRONYMS
ACRONYM COMPLETE TERM
COAX Coaxial
HDMI High-Denition Multimedia Interface
OLED High-Denition Multimedia Interface
OPT Optical
USB Universal Serial Bus

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