Dongguan Chia Maw Electronics Tech RF4020 Wireless Audio Transmitter User Manual
Dongguan Chia Maw Electronics Tech. Co., Ltd. Wireless Audio Transmitter Users Manual
Users Manual
Wireless Audio System
JK-RF4020
User’s manual
Content
Introduction……………………..…………1
User information…………………..………1
Cautions……………………………………2
Connections……………………………..…3
Features…………………………………….4
Note…………………………………….…..5
Introduction
Using the wireless technology, you can enjoy the music when you want stay in outdoors, just
like park. The music can travel through space by RF signals, the same times you can get
perfect audio functions.
FCC ID LABEL:
Connections:
PRODUCT BRIEF
Auto Mute :when signal received is “mute”
Digital Volume Control: for precision volume control
Auto Power Down: when no signal is received for a preset period of time
Forward Error Correction :ensures high integrity of the audio transmission
Baseband Mode: to bypass the compression/decompression blcck
SPI Interface to program the RFICs ARF2481S/ARF2461C
I
²
S Interface: to your choice of DAC/ADC
Diversity Antenna: providing robust interference immunity
Programmable Output Power Level: offering flexibility in applications
Control Interface: with microcontroller or Serial EEPROM
Transmitter Specifications
Frequency Range 2.4GHz-2.4835GHz
Power Supply 3.3V (IC), 5V (Demo
board)
Modulation/Demodulation Scheme FSK
Current Consumption 75mA@10KΩ loading
(Rx) 125mA (Tx)
Number of Channels 14
Range (Line of Sight) 100 meters@+10dBm
Sampling Rate 48/44.1/32KHz
Frequency Response 20Hz-20KHz
S/N Ratio 88dB (mute function
enabled)
Separation 80dB
Dynamic Range 78dB
