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Cofdm Vehicle Mount Video Transmitter Direct From Factory1
TransmitterCofdmVideo Transmitter
Shenzhen Keweitai Enterprise Co., Ltd.
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Product Description Functions & Features:n ABS encryption transmissionn Built-in air-cooled radiator n 19-inch standard casing design for convenient connection with standard rackn Aluminium alloy case with good impact resistancen Working frequency and other parameters directly display on paneln Power output and working frequency adjustablen Encrypted transmission for higher securityn COFDM modulation and H.264 video compression for stable and high-quality A/V transmissionn One-channel video and two-channel audio (left/right) simultaneously inputn Left/right channel audio and unbalanced stereo input, one-channel audio outputn 1.5/2/4/6/7/8MHz multiple bandwidth outputn Video input PAL/NTSC optional (default as PAL)Power SupplyWorking voltage VAC220V±20VWorking current A≤0.7A@AC220V12.5VVideo TransmissonFrequency output range MHz300MHz~450MHz,560~760MHz or user customized RF bandwidth MHz1.5/2/4MHz,6/7/8MHzPower output30~45dBm(adjustable)C/N≥28dB @ 42dBmSHG>62dBcEncryptionAES/ALLTECH Basic ScramblingModulationCOFDMConstellationQPSK/16QAM/64QAMFEC1/2, 2/3, 3/4, 5/6, 7/8optionalCarrier2KGUI1/4, 1/8, 1/16, 1/32 optionalVideo encodingH.264Video input level1~1.2Vp-p@75ΩVideo input formatPAL/NTSCVideo resolution720×576(PAL) 720×480(NTSC)Video white bar amplitude mV650~720mVVideo synchronous amplitude mV260~275mVVideo amplitude-frequency characteristic dB0~4.8MHz-0.5~1.5 5.5MHz-4.0~1.5Audio inputLeft/right channel, stereoRS232 control interfaceStandard RS232 level, 9600, 8, N, 1RS232 data interfaceStandard RS232 level, support 1200~115200Audio ReceivingAudio Rx frequency range470.5~479.950MHz, factory setting: 479.950MHzAudio Rx sensitivity≤-111dBmAudio Tx modulationGFSKFrequency step150KHzAudio decoding overall bitrate4800bpsAudio output2.1Vp (open circuit output)GPS ReceivingSignal receivingL1(1575.42MHz),C/A codeCommunication protocolNMEA0183Sensitivity-165dBmAntennaActive antennaData baudrate4800bpsData refresh rate1HzEnvironmentWorking temperature-25°C~55°CStorage temperature-40°C~70°CAppearanceDimension430mm×400mm×88mmWeight8.6kg
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