RAG-4U the PDI-RAG-4U agile style every band TV modulator savings across the space frequency variable modulator system, which consists of four fixed channel modulator, can be easily installed in a standard 19-inch rack. First, the technical features: ★ volume is small, easy to install; ★ microcomputer control, image sound dual phase-locked; ★ channels McNair variant every frequency TV modulator; ★ High-level output, high reliability; ★ microcomputer CPU control, programmable 51 channels, displaying the channel; ★ power and memory function, excellent audio and video linearity; ★ 1-port RF output port; 4-port video, audio input port; ★ system to choose every channel; ★ C selection channel channel; ★ wide range of linear power supplies; ★ using SMD technology, machine stability. Second, the technical parameters: Output frequency range MHz 471-863 RF output level dBμV ≥ 104 spurious output RF output return loss dB ≥ 13 video modulation suppression ratio dB ≥ 60 (maximum RF output)% 87.5 (video input level 1Vp-p) video band flatness differential gain of dB ± 1.2% ≤ 5 Differential Phase ° ≤ 5 video signal-to-noise ratio dB ≥ 60 images, sound frequency the pitch KHz 6500 ± 2 (PALD / K); 6000 ± 2 (PALD / I) image carrier frequency accuracy Δf KHz ≤ 20 audio carrier modulation frequency deviation% ≤ 1 KHz 50 audio total harmonic distortion audio signal-to-noise ratio dB ≥ 60 audio pre-emphasis μs 50 supply V AC 90 to 264 ± 10% of environmental the temperature ℃ 5-50% ≤ 85 relative humidity working environment atm Kpa 86-106 Dimensions mm 483 * 140 * 45 Weight Kg 2