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Headend－analog - Human Oriented Technology.

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HEADEND－ANALOG HAVM-860 High Performance Agile TV RF Modulator Descriptions HAVM-860 is a high performance Adjacent Channel Modulator that is designed for CATV headend installation. The audio/video signal is modulated to IF which are both phases locked to ensure supreme frequency stability. There are four banks of filters at RF output section to further improve spurious performance. HAVM-860 is characterized by good out-of-band rejection and excellent vestigial sideband. It's the best choice for large and medium-sized headend of CATV systems. Features • • • • • Dual-phase locked loop technology with MCU control is adopted to improve frequency stability and accuracy. Dual SAW filters with high performance are adopted to improve out-of-band rejection. High linearity MMIC RF power amplifiers are implemented to boost the output level up to 120dBμV. The vision signal modulation, audio deviation, A/V ratio and output level can be adjusted on the front panel. It's easier to operate, because of the digital channel number of front panel. Specifications Item RF Frequency Range Output Level Output Impedance V/A Power Ratio Vision Mid Frequency Frequency Accuracy Sideband Rejection Output Return Loss Video Input Level Modulation Differential Gain Differential Phase S/N Ratio C/L Delay Frequency Response www.humortek.com [email protected] Unit Technique Parameter MHz dBμV Ω dB MHz KHz dB dB 47~860 120 dBuV 0 to -20 dB, Adjustable 75 -10~-20, Continuously Adjustable 38.9 ≤5 ≥ 62 ≥ 12 Vp-p % % ° dB ns dB 0.7~1.4 87.5 ≤3 ≤3 ≥ 55 ≤ 40 ±1.5 Item Audio Input Level Input Impedance Pre-emphasis Distortion Frequency Response Audio to Noise ratio General Supply Voltage Power Consumption Dimension Unit Technique Parameter Vp-p Ω μs % dB dB 0.7~1.4 600, Unbalance 50 ≤ 1.5 ±2 (50Hz~15KHz) ≥ 55 V VA mm ~220 ±15% (50Hz) 8 483(L) x 200(W) x 44(H) Human Oriented Technology, Inc.