2.4G high fidelity stereo wireless audio transceiver circuit board module | Инструменты

2.4G high fidelity stereo wireless audio transceiver circuit board module | Инструменты

one:brief introduction

KCX_2.4G002It's a product that works in2.4G ISMHigh quality stereo audio transmission module，Up to16Bit、44.1KSPSAudio transmission code stream based on DSP，RF air speed up to5Mbps，The high fidelity of audio transmission is ensured。This module adopts adaptive frequency hopping、Forward error correction、Buffer and retransmission technologies ensure the reliability of wireless transmission，The adaptive frequency hopping mechanism can avoid automaticallyWiFiAnd Bluetooth，It can be connected with Bluetooth、WiFiWorking in an area。Just implant this module into your product，The common wired audio products can be upgraded to wireless audio products。

two：Characteristics and advantages

1：exceedCDUncompressed audio transmission of sound quality

2：Excellent durability and coexistence

3：Through a variety of technologies to ensure the stability of wireless transmission

√　Adaptive frequency hopping

√　Forward error correction

√　Buffering and retransmission

4：IntuitiveLEDIndication and status port

5：Easy to use

6：support1hair4collect（Maximum support1Two transmitters are paired4Simultaneous reception of two receivers）

7：RF connection speed≤1s

8：Wireless transmission distance≥100rice（In the open without shelter）

9：Wireless data encryption+Frequency hopping technology，The confidentiality of transmission is guaranteed，The receiver and transmitter must be paired for the first time，No pairing is required for subsequent use，Connect immediately after power on。

three：Specifications and parameters

working voltage ：DC5V

Working current：85mA

modulation mode ：GFSK

frequency response：20Hz-20KHz

dynamic range ：92dB

Audio sampling rate：16Bit/44.1Ksps

frequency range ：2.408-2.476GHz

Data transmission rate：5Mbps

Transmission delay：25ms

PCBDimensions：73x40mm(Antenna and projection are not included)

four：Scope of application

●Wireless speaker

●CD、DVD、Wireless transmission of TV audio

●Home theater、Projector audio to wireless

●wireless microphone （A microphone preamplifier is required）

●Wireless monitoring system

●Wireless headset

●Wireless transmission of musical instrument audio signal

five：matters needing attention

This module is a radio sensitive equipment，Although this module has adaptive frequency hopping anti-jamming mechanism，In order to make the communication more stable，Use and install distance wireless router2Distance above meters。

six：General introduction

seven：Selection and connection of peripheral devices

1：Selection of power supply

<1>：DC 5.5*2.1mmInterface for input5VPower Supply。

<2>：2PIN/2.0mmspacing5VThe power input terminal can also be used as a5VPower supply input，This port is associated withDC5.5*2.1mmThe seats are connected in parallel。

2：Antenna selection and connection

This module adopts4Dbi/2.4GHigh gain omnidirectional antenna，adopt SMAThe detachable RF interface is connected with the module。Users can also choose compatible products according to the actual design needs2.4Gantenna。In usePCBThe antenna radiator should be far away from the module body and audio line as far as possible，Power line and other easily disturbed signal line，At the same time, the antenna needs to be exposed to the space as much as possible，Avoid being covered or shielded by metal objects。because2.4GWireless signals cannot penetrate metal objects，So there should be no metal objects near the antenna，So as not to affect the communication distance。

3:Recommended specification of external antenna：

type explain

frequency range 2.400-2.521GHz

impedance 50Ω

Voltage Standing wave ratio≤1.5

polarization Vertical polarization

Interface SMA

Feeder length 10cmabove

4：Connection and specification of audio signal

The input and output of the audio signal are in the same mode3.5mmaudio interface，input/The output signal conforms to the common mobile phone、Computer headphone interface output specifications。The audio input of the transmitter can be accessed through the3.5mmAudio cable and mobile phone、MP3The earphone hole or line audio output port of audio source equipment such as player is directly connected，The audio output terminal of the receiver can push the earphone directly or output to the active speaker、Power amplifier。

eight：Instructions for connection and pairing

matching method ：Using this module for the first time，Pairing is required。In the power on state, short press theConnectkey，The status indicator flashes slowly（bright1sExterminate1s），Indicates entering pairing mode，After the receiver enters the pairing mode20In seconds, short press the number of transmitters to be pairedConnectkey，LEDTo exterminate2000ms，flash 50msTwo frequency flashes indicate successful pairing。This module supports1drag4（A transmitter board can pair and connect up to four receiver boards），Connect different receiving boards and repeat the matching according to the same operation above，The transmitter will remember4A newly paired receiver，The next boot can connect automatically without pairing again。

Unpaired：To release the pairing status of a module, just press the button of the receiving board to release the pairingConnectKey to release the pairing status with this receiver。

be careful：Do wireless audio transmission at least need to buy1Two launch panels and1Two receiving boards。In addition, a transmitting board can be paired with multiple receiving boards as needed，At present, at most one transmitter can be connected and paired at the same time1-4Two receiving boards，realization1Two transmitters transmit audio signals1-4Simultaneous reception of two receivers。

nine：How to distinguish transmitter from receiver

At present, the transmitter and receiver share the same board，The audio socket used by the transmitter is blue，The audio socket used by the receiver is green，You can distinguish whether the board is a transmitter or a receiver according to the color of the audio socket。

It can be used with this product5V2ALow ripple power adapter purchase link below：

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