SOYO SOYO-WM24G02 Bedienungsanleitung

2.4G Digital Wireless Audio Transceiver Module SOYO-WM24G02 SOYO TECHNOLOGY DEVELOPMENT CO.,LTD.

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Hi-Fi Wireless DigitalAudio Module User’s Manual

Names: 2.4GHz Wireless Digital Audio Transceiver Modules

Model: SOYO-WM24G02

Date: May, 2009

VersionNo.: Version1.6

Soyo Technology Development Co. Ltd.

2008--2009

2.4G Digital Wireless Audio Transceiver Module SOYO-WM24G02 SOYO TECHNOLOGY DEVELOPMENT CO.,LTD.

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CONTENTS

I. INTRODUCTION............................................................................................................................3

1.1 APPLICATIONS...................................................................................................................................4

1.2 FEATURES .........................................................................................................................................4

1.3 ELECTRICAL SPECIFICATION .............................................................................................................5

II GUIDE OF DESIGN........................................................................................................................7

2.1 GUIDE OF TRANSMITTER DESIGN......................................................................................................7

2.1.1 Figure of Transmitter Interface and Dimension........................................................................7

2.1.2 Transmitter Module Pin Assignment.......................................................................................7

2.1.3 Transmitter Module Using Methods ......................................................................................8

2.1.4 Channel Transform Methods of Transmitter.............................................................................8

2.2 GUIDE OF RECEIVER MODULE DESIGN ...........................................................................................9

2.2.1 Figure of Receiver Module interface and dimensions ........................................................9

2.2.2 Receiver Module Pin Assignment.....................................................................................10

2.2.3 Receiver Module Using Methods .....................................................................................10

2.2.4 Changing of Receiver Module Frequency Channel................................................................11

2.3. RECEIVER MODULE AND TRANSMITTER MODULE PAIRING ARRANGEMENT .............................12

2.3.1Approaches of Pairing Point to Point.......................................................................................12

2.3.2 Approaches of Pairing Point to Mass: .................................................................................12

III. GUIDE OF PLACINGAN ORDER .........................................................................................13

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I. Introduction

SOYO-WM24G02X, is the latest version of the wireless digital audio transmission module is developed by

SOYO TECHNOLOGY CO. LTD. It is Hi-Fi and very good in resistance against various RF interferences, not only

with the quality of the previous version, but with a I/O interface, which allows users to have more different functions.

It is characterized by a lot advantages, such as highly integrated small form, high quality sound (with HDCD sound

effect), powerful ability to work against different RF interferences, etc. It has the highest sampling ratio in the field

and best sound effect of all our modules. The range of its input power can be as broad as 3.6—6 Volts and its audio

output as high as 60mw.Its input interface is compatible with microphones and stereo frequency

It’s our second generation of its kind produced as a result of a lot of research work and efforts based on a great

number of our customers’ letters after our first one was successfully marketed. It is not only characterized by a lot

advantages, such as highly integrated small form, high quality sound (with HDCD sound effect, and the highest

sampling ratio in the field and best sound effect of all our modules so far), powerful ability to work against different

RF interferences( Its input voltage as broad as 3.6v to 6v and audio frequency output as high as 50mw), and its input

interface is compatible with microphones and stereo frequency, like the first one; but also added with the following

features.

Channel up-and- down adjustment

Digital volume adjustment to 32 grades.

The main switch can get rid of the switching noise with its own noise elimination circuit

Supporting the real-time-online cut of audio frequency, common microphone and audio input.

There are 20 channels available, the number of which is the largest in the field up till now. Simultaneous

interpretation, Multi-channel player as well as some other applications can also be available by selecting channels

manually.

This module supports fixed ID working mode, both point to point and point to mass. It can also receive high-end

modules and acts as an auto channel scan. So it is quite easy and convenient to use. Once ID is paired, the receiver,

placed at random, will receive signals from the Transmitter Module automatically. If there is interference in the

current channel, just change the channel. It features audio muting function in case there should be no or weak signals

SOYO-WM24G02X is the best choice for the manufacturers of speakers, head-phones and microphones to

2.4G Digital Wireless Audio Transceiver Module SOYO-WM24G02 SOYO TECHNOLOGY DEVELOPMENT CO.,LTD.

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develop high-quality wireless digital products. To our old customers who have used SOYO-WM24G01X,

SOYO-WM24G02X can be a better cost effective product.

1.1 Applications

Wireless speakers

Wireless headphones

Surround speakers

Wireless microphones (or loudspeakers)

Supporting facility of wireless audio transmission in sound system:.

Supporting facility of wireless audio transmission in monitoring project.

Channel-surround sound boxes being wireless.

Wireless microphones or loudspeakers

Wireless Guide Speaker

CD/DVD players or other musical facilities.

wireless eavesdropping

Wireless Simultaneous interpretation System

Wireless megaphone

Wireless Loud-speaker

1.2 Features

Frequency: 2.400—2.483GHz

Channels: 20

Two types of input supporting microphones and stereo and UPS On-line real-time switch as well.

Digital transmission

Additional 20dB selection can be available with microphone input (for the high-sensitivity

microphone, eavesdropping applications)

Sampling ratios: We have the highest sampling ratios in the field: 64k@16bitх2

Frequency response: 20—20KHz; HDCD Sound effect

Two digital number display on the Digital Volume and the channel change

Channel up-and- down adjustment

2.4G Digital Wireless Audio Transceiver Module SOYO-WM24G02 SOYO TECHNOLOGY DEVELOPMENT CO.,LTD.

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Digital volume adjustment to 127 grades.

The main switch can get rid of the switching noise with its own noise elimination circuit

Small size and highly integrated.

We have the lowest latency (<0.5ms), and good quality of surrounding

Low power consumption for a wide range of input voltage.

Audio muting function when receiving weak signals or no signals.

Function of auto channel scanning.

Selection of TX power: 0—20dBm (Decided when ordering) RF range can be up to 180 meters

with the greatest TX power in an open field.

For the application of head-phones, the receiver particularly provides no signal standby dormancy

function. And the standby current is less than 0.5mA.

Interface of Channel display

Flexible design supporting custom functions

Indeed convenient to use and easy to handle.

As far as the headphone users are concerned, they are offered an option of a low-voltage module

with the 2-2.2Volts as its minimum operating voltage

Digital transmission

1.3 Electrical Specification

No Description Transmitter Receiver

1 Work Voltage 3.6—6V DC 2.5—3.6V DC

2 Work Current Max 120mA Max 40mA

3 Operation Temperature -15—65℃-15—65℃

4 RF IC Frequency 2400—2524MHz 2400—2524MHz

5 MODULATION GFSK

6 Data Rate 2Mbps 2Mbps

7 Channel Space 4MHz 4MHz

8 Frequency Stability +156KHz +156KHz

9 Practical Module Frequency

Range

2400—2483MHz 2400—2483MHz

10 Practical Module Working

Channel

8CH(Mode A) 20CH (Mode B) 8CH(Mode A) 20CH

(Mode B)

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11 Module Channel Space 4MHz 4MHz

12 RF Range 100—150M (tested with TX power 20dbm in an open field

13 TX Power 0—20dBm (determined when

ordering)

14 RX Sensitivity -90dBm

15 Input Level Max.1.0Vrms

16 Input Impedance 10k Ohm

17 Input interface Selection of inputs of

microphones and stereo

frequency

18 Stereo Output Level 1 30mW RL=32Ω

19 Stereo Output Level 2 50mW RL=16Ω

20 Mic input gain adjustment 0dB (for ordinary Mic) 1kOhm

20dB (for high sensitivity or monitoring)

21 Output Impedance 1k Ohm

22 Gain ratio of output and input 1:1

23 Frequency Response 20—20000Hz (+/-1dB)

24 Latency <0.5ms

25 Sampling Ratio 44.1khz (Mode A) 64kHz ( Mode B) 16 bit

26 S/N Ratio 95dB

27 THD 0.8%@1kHz

28 Dynamic Range 90dB

29 Channel Separation 70dB

TableITechnical parameter

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II Guide of Design

2.1 Guide of Transmitter Design

2.1.1 Figure of Transmitter Interface and Dimension

Figure 1 Transmitter Module Figure (SOYO-WM24G02T)

2.1.2 Transmitter Module Pin Assignment

No Pin Description

1 Audio-L-IN Audio Left Channel Line Input

2 Audio-R-IN Audio Right Channel Line Input

3 MIC-IN Microphone (Loudspeaker) Input

4 SG Simulating Signal Ground

5 MIC-EN Selection of Microphone or Sound Input. Open for Line input, connected with 10k resistance;

grounding the drop-down for Mic input

6 CH+ Channel up. It is also used for paring ID (Press the channel button continuously for 3s, during

2.4G Digital Wireless Audio Transceiver Module SOYO-WM24G02 SOYO TECHNOLOGY DEVELOPMENT CO.,LTD.

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which the LED is out, until the LED remains on. Stop pressing, and it will get into the

5-second-point-to-point ID pairing status where the LED flickers. If you keep on pressing the

button while the LED is flickering, it will keep on pairing, which is the function of pairing point

to mass, a function of one transmitter pairing a mass of several receivers.

7 LED Indicating Module Working Status: It remains on while normally working.

8 VCC Voltage DC 3.6—6V

9 GND Power

10 NC Non-connected

11 NC Non-connected

12 DS_ CLK_ Displaying serial clock

13 DS_ DATA Displaying serial data

14 SDA Signal data Adjustment, controlling input volume.

15 SCL Signal data clock, controlling input volume

16 CH- Channel down

17 REST Module reset ,also used as Mute function

18 AMP Selection of MIC input gain amplification：0dB 、20dB

2.1.3 Transmitter Module Using Methods

With unified channel and ID when produced, the Transmitter Moduleis ready to work as soon as it is interfaced in

accordance with Figure 1 and switched on.

For Mode A, switch is chosen through channel selection and 8 channels are available to avoid

interference .Receiver has to be adapted synchronously as transmitting channel is done when channel is

selected.

For Mode B, by adding function of ID pairing to it, interference can be resisted automatically. And it has 20

channels for you to choose. So to avoid getting sounds mixed up, having the function of ID pairing is suggested.

Paired ID is the real random address, whose coincidence rate is only 1/20,000,000, therefore it is nearly

impossible to have the coincidence

2.1.4 Channel Transform Methods of Transmitter

The module has an extremely good resistance to interference as a result of the 2.4G digital

wireless technology. It can be very effectively shielding the interference from cordless phones, cellular

phones, walkie-talkies and other wireless devices and ensures a hi-fi wireless audio. However, the

characteristics of the wireless products determine that the module can not avoid the interference with

2.4G Digital Wireless Audio Transceiver Module SOYO-WM24G02 SOYO TECHNOLOGY DEVELOPMENT CO.,LTD.

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the frequencies. Therefore, when encountering this source of interference, the easiest way is to change

the channel, selecting a different frequency channel.

Our company provides, in the industry, the most optional channels (20channels) the most

convenient channel tracking and switching (RF channel changing and the receiving end automatically

sweep-tracking-and switching transformation) to facilitate the customer.

In the case of being interfered, say receiving intermittent sound or no sound (in an effective

distance), replacement of the channel can avoid interference.

The specific method is as follows. Press the button and then release it, (Note: The pressing period

can not be more than 3 seconds, otherwise it will get into the state of pairing) the channel is replaced

once. Altogether 20 channels are available.

2.2 Guide of Receiver Module design

2.2.1 Figure of Receiver Module interface and dimensions

Figure 4 Receiver Module view（SOYO-WM24G02R）

2.4G Digital Wireless Audio Transceiver Module SOYO-WM24G02 SOYO TECHNOLOGY DEVELOPMENT CO.,LTD.

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2.2.2 Receiver Module Pin Assignment

No. Pin Description

1 H-L-Out Audio Left Channel Output connected with the head-phone(amplifying and

actuating the headphone directly)

2 H-R-Out Audio Right Channel Output connected with the head-phone(amplifying and

actuating the headphone directly)

3 NC Non-connected

4 SG Signal ground

5 NC Non-connected

CH+ Channel up It is also used for paring ID Press the channel button continuously for 3s, (The

LED is originally out) until the LED is on. Stop pressing, and it will get into the

5-second-point-to-point ID pairing state where the LED flickers. When the ID paired

signals have been received, LED flickers three times and the module gets into the

receiving mode , waiting for the signals from the transmitter. Then pairing is

fulfilled.

7 LED Indicating its working condition. It remains on when scanning or not receiving. It

is out when signals from the transmitter. are available.

8 VCC Voltage DC 2.5—3.6V

9 GND Power

10 Line-L-out Audio Left Channel Line output

11 Line-R-out Audio Right Channel Line output

12 DS_CLK Displaying partial serial clock output

13 DS_DATA Displaying partial serial data output

14 SDA Serial signal data adjustment, controlling output volume.

15 SCL Serial signal data clock, controlling output volume

16 CH- Channel down

17 RST Module reset

18 NC Non-connected

2.2.3 Receiver Module Using Methods

With unified channel and ID when produced, the Receiver Module is ready to work as soon as it is

interfaced in accordance with the figure related to it and switched on.

For Mode A, switch is chosen through channel selection and 8 channels are available to avoid

interference .Receiver has to be adapted synchronously as transmitter channel is done when channel is selected.

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