VADTSC07电站卫星通信系统TECHNICALSPECIFICATIONS.技术参数Antenna天线参数Remote55,90,120cmHub120(180,240)cmFrequency频率Transmit14.0-14.25GHzReceive12.50-12.75GHz(otherunderrequest)ModulationandDatarates调制方式2-4PSK2400,4800bpsOQPSK9600bps,14400(FEC3/4),16800(FEC7/8)AccessMethods接通方式OutboundTDMInboundTDMA,Slotted,Aloha,useraccess,schemesInterface接口RS232,RS422,RS485Remote2async.DB91sync.DB25,X25(underrequest)HubUpto64async.DB251sync.DB25,X25(underrequest)Communicationprotocols通讯条约CompatiblewithIP/ethernetCircuit-switchedPoint-point,Multidrop,PSTNmodem,dial-upemulationPacket-switchedX25SVC,PVC(underrequest)