Video Conference System, education equipment, offi

VGA PartInput PortVGA*4(Audio switch synchroniously)Output PortVGA*2(with long-cable driving and preview function)Support resolutionsVGA/XGA/SXGA/QXGABelt width440MHzB/C Interference-50dB@5MHzDifferential Phase I/OS<1.28 degree,3.58MHzDifferential Gain Mismatches0.1%,3.58-4.43MHzAudio PartsCable microphone input×1Wireless microphone input×1 optionalIn PortAUDIO IN×6Out PortPort 13.5,Port 2 amplifierFrequency response20Hz-20kHz +1/-3dBStereo channel is isolation>80dB@1kHzGain error±0.1dBVisual PartsInput PortVIDEO×2Output PortVIDEO×1I/O Impedance75ΩBrightness Chroma Interference<-80dB@100KHz,fully loadedReturn Loss-30dB@5MHzBandwidth100MHzOther Output PortsProjector/rear projection power output×1The front panel power output×1Screen control power output×1Curtain switch control power output×1Lighting circuit power output×1Programing RS-232 Port×1PC RS-232 Port×1Porjector RS-232 port×1Programmable infrared emission interface×2U-key electronic interface×1Switch-computer interface×1Stereo radio inputs×1RJ45 cable accessfront/back×1USB accesfront/back×1Network control port×1 optionalMeasurementThe external dimensions255×150×180mmOpening Dimensions (L × W)240×135mmWeight2KgEnvironmentPower Supply220V±10% & DC 12V 3APower Consuming20W(not including projector & screen power)