China Wireless MP3 Transmitter\Portable MP3 Transmitter

Wireless MP3 Transmitter
Portable MP3 Transmitter
Specification
*Performance characteristics.
* Operate frequency: 2400-2483MHz
* Channel: 20
* Small in size, high integration
* Shortest sound delay: <0.5 ms
* Low power consumption, wide voltage input, the transmitter can work at least 6 hours continuously, the receiver can work at lease 30 hours continuously.
* Real digital transmit, with the encrypt pairing function, the receiver which not been paired will not receive the signal of this group.
* Automatic scan function. (Refer order description)
Description of Wireless Portable MP3 audio guide transmitter
Power(input voltage) 3.7VNokia lithium battery
Work currency 120Ma(MAX)
Operate tenperature -25 ~ 85 C
Frequency 2400 --~ 2483MHz
Modulate GFSK
Channel width 4MHz
Channel choose method One-way loop
Transmit power 19dBm
Input level Max 1.0Vpk
Input impedance 10k Ohm
Input interface Two kind input mode: 1. Microphone input2. Stereo sound input(confirm when order)
Output impedance 1k Ohm
Input-output gain ratio 1: 1
Delay < 0.5 ms
SNR 95 dB
Distortion 0.3 % @ 1KHz
Dynamic range 90dB
Left and right channel isolation 85 dB

NO.DescriptionTransmitter moduleReceiver module1Work voltage3.6- 6V DC2.5 - 3.6V DC2Work electric currentMax 120mAMax 35mA3Work temperature-15 - +65-15 - +654Frequency response2400 - 2483 MHz2400 - 2483 MHz5ModulationGFSK 6Baud rate2M bps2M bps7Channel space4MHz4MHz8Stabilization of frequency+/-156KHz+/-156KHz9Work frequency range2400 - 2483 MHz2400 - 2483 MHz10Work channel20 CH20 CH11Channel space of module4MHz4MHz12Output power0-20 dBm 13Receiver sensitivity 90dBm14Input powerMax 1.0Vrms 15Input impedance10k Ohm 16Input modeTwo input modes:
1. Microphone
2. Stereo audio 17Stereo output 1 30mWRL = 32Ω18Stereo output 2 50mWRL = 16Ω19Output impedance 1k Ohm20RF Distance100-150 meters in the open area under 20dBm21Output input gain ratio1:122Frequency response20 - 20000Hz ( +/1dB )23The latency time< 0.5 ms24Sampling ratio64kHz@16 bit*225SNR95 dB26Distortion0.8%@1kHz27Dynamic range90dB28Separation between the left and right track70 dB