Digital UHF Conference Microphone PMM3980

Digital UHF Wireless Conference system:

     With high flexibility and reliability,our wireless meeting microphone system is an ideal choice for mobil conference systems,It offers simple operation,compact structures, The wireless meeting microphone system can be perfectly integrated into any meeting rooms, without additional wiring,In addition,multiple devices can be used together.

* Use multi-channel with high frequency to avoid the interference.

* With audio compressing-expanding technology.the machine can reduce the noises and increase the dynamic range.

* Having backsound restrain function can avoid backsound scream.

* System include 1 receiver and 8(PMM3980) or 4(PMM3940) transmitter microphone

* Operating frequency : UHF 500~900MHz

* Frequency response : 40Hz~20KHz

* Dynamic range : >105dB

* T.H.D : <0.5%

* Adopt CPU control with PLL combined technology.the transmitter power is adjustable, 

   They can be used several sets at the same time without interference.

* Frequency selection of IR

* Frequency stability : <+_30ppm

* With FM Max frequency adjusting : +_45KHz

* Pre-warning display for weak battery

* Audio frequency response compression and auto electricity level control circuit

* Audio output:Balance:0-400mV,unbalance : 0-300mV

Receiver parameter

Oscillation ：PLL syntheized

Carrier Ferquency Range ：UHF 500~900MHz

Frequency Stability：±0.001%

Max.eviation Range：±30KHz

Modulation Mode：FM

S/N Ratio：>105dB

T.H.D：<0.5%@1KHz          

Sensitivity：1.2/UV @S/N=12dB

Power Supply：DC:12V～17V

Audio Output：(Free standing)0～400mV,(Mixed style )0～300mV

Shoot machine parameter

Power Supply ：DC 4.5V (1.5V AA*3)

Consume an electricity quantity：100mA

Carry a frequency ：UHF 500~900MHz

Frequency stability：±25KHz

S/N Ratio：>105dB

F/N Ratio：>80dB

Dynamic range：≥100dB

Type：capacitance

Polar psttern ：One direction

Frequency Resonse：40Hz～20KHz

Sensitivity：-45±2dB@1KHz