... MPEG-2 encoders, 4 multiplexers, 4scramblers,4 modulators DS-H888X Serial Multi-Function QAM (DVBC) Modulator is ... /4, 5/6, 7/8 Input Frequency: 470 — 862MHz, 174 — 230MHz Input Level: -70 — -20dBmV Input Impedance: 75 ... QAM Modulator with 2 Programs MPEG-2 Encoder DS-H8881+4E: 1 channel QAM Modulator with 4 ... Programs MPEG-2 Encoder DS-H8881+6E: 1 channel QAM Modulator with 6 ...