Key Features of SIZHENG QD28 cctv audio microphone
1:Fidelity Sound Pickup,designed for audio monitoring, the advantages of large monitoring range and high sensitivity.
2:Gold-plated vibration membrane microphone, 5~100 square meters in high fidelity, high sensitivity, high bandwidth and low noise.
3.Built-in AGC and DTS noise reduction signal processing circuit, automatically adjust high strength voice and instantaneous impact sound.
4.Built-in newest DNP and DSP digital processing unit, completely eliminate "hiss" electronic noise.
5:Equipped with high-pass filtering noise reduction circuit, effectively reduce the high frequency and low frequency noise of environment and circuit.
6.Long audio signal transmission technology, Long audio signal transmission technology,use the RVVP3 x 0.5mm2 shield cable, it is distortionless within 3km.
7.Widely used in television broadcasting, TC Teleconference, classrooms and any indoor places need to video audio monitoring.
Specifications of SIZHENG QD28 cctv audio microphone
|Audio Monitor Range||10-100 square meters (adjustable)|
|Audio Transmission Distance||3000m|
|SNR||80dB(1m40dB) 60dB(10m40dB) 1KHz at 1Pa|
|Dynamic Range||104dB (1KHz at Max dB SPL)|
|Max Sound Pressure||120dB SPL (1KHz,THD 1%)|
|Output Impedance||600 ~ 1000Ω non-equilibrium|
|Microphone||Gold-plated vibration membrane microphone|
|Signal Processing Circuit||DSP,AGC,ALC|
|Protective Circuit|| Lightning protection, power supply polarity reverse connect protection,
|Connection Way|| 3 leading wires
(red lead is power+, white lead is audio signal+, black is power-&audio signal-)
|Transmission Cable||RVVP3*0.5mm2 shield cable|
|Supply Voltage|| DC10V~18V
(recommend to use 12V, more than 500 meters recommended 15V)
|Housing Material||Advanced resin PVC+Spray diffusion coating|
|Place of Origin||Guangzhou, China|
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