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 I²S 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

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