PDI-16 road modulator is a space-saving fixed channel modulator system, which consists of 16 vertically fixed channel modulator and an efficient switching power supply can be easily installed in a standard 19-inch rack. Technical characteristics: ● compact, easy to install; ● microcomputer control, image, audio dual phase-locked; ● IF SAW filter processing, the vestigial sideband excellent; ● High-level output, the sound frequency offset continuously adjustable, high reliability sexual; ● Wide range of linear power; ● use of SMD technology, machine stability. Second, the technical parameters: Output frequency range MHz 48-871 RF output level dBμV 105 spurious output suppression ratio dB ≥ 60 (maximum RF output) RF output return loss dB ≥ 13 video modulation% 87.5 (video input level 1Vp -p) video band flatness differential gain of dB ± 1.2% ≤ 3 Differential Phase ° ≤ 3 video signal-to-noise ratio dB ≥ 60 Color / light time delay difference Δt ns | of Δτ | ≤ 45 image / sound carrier power ratio (V / A) dB 10-20 continuously adjustable image, audio frequency spacing kHz 6500 ± 2 (PAL-D / K); 5500 ± 2 (PAL-B / G); 4500 ± 2 (NTSC) image carrier frequency accuracy Δf KHz ≤ 5 audio carrier modulation frequency offset KHz 50 audio total harmonic distortion% ≤ 1 audio signal-to-noise ratio dB ≥ 60 audio pre-emphasis μs 50 supply V AC 220 ± 10% Ambient temperature ℃ 5-50 Relative Humidity% ≤ 85 work ambient atmospheric pressure Kpa 86-106 Dimensions mm 483 * 200 * 90 Weight Kg 16.3 active mixer Technical parameters: Output frequency range MHz 48-871 Differential Gain% ≤ 3 video band flatness dB ± 0.5 Nominal input level dBμV 108 111 Noise Figure dB nominal output level dBμV ≤ 8 Reflection Loss dB ≥ 12 12 C / CSO dB 64 power input V AC90-265V input port Road 16 output voltage V DC 3.5A (MAX)