... Rate256KbpsRS232 Control InterfaceStandard RS232 level, 9600,8,N,1RS232 Data InterfaceStandard RS232 level, supporting 1200~115200ModulationCOFDMConstellationQPSK,16QAM,64QAM (optional)FEC1/2, 2/3, 3/4 ... , 5/6, 7/8 (optional)Guard Interval1/4 ...