Microyal Model 4000M
Professional Agile Adjacent Modulator
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4000M Professional Agile Adjacent Modulator is uniquely designed for adjacent commercial CATV system. It is made with proprietary SAW filter that achieves true VSB response and IF modulation signal processing. The spurious harmonic is more than 60dB, and with outside channel filter, the spurious harmonic could be above 70dB. Both video and audio carriers are PLL controlled to ensure accuracy and stability. With build-in microprocessor MCU controlling, two LED displays on front panel. It has the features of last channel memory, frequency fine tune with fine tune range between ±4MHz; RF output level above 115dBμV; it also has the feature of high audio and video linear. It can be used in medium-large CATV system independently or cooperate with IF modulating Microyal-3000M / Microyal-2500MB / Microyal-2000MB modulator to meet the requirement of middle-big CATV Headend System. |
Specifications:
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Output Frequency Range |
48MHz~550MHz (Ch01～Ch22, Z1～Z38 Adjustable) |
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Video Input Level |
1.0Vp-p for 87.5% Mod |
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Video Flatness |
≤ ±2dB |
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Differential Gain |
≤ 3% |
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Differential Phase |
≤ 3° |
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Video S/N Ratio |
≥ 52dB |
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C/L Delay |
≤ 45ns |
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Audio Pre-emphasis |
50μs |
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Audio Carrier Modulation Deviation |
±50KHz (Audio Input Level is 0dBm±6dB) |
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Audio Harmonic Distortion |
≤ 0.8% |
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Audio S/N Ratio |
≥ 58dB |
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Video Clamp Level |
≥ 26dB |
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RF Output Return Loss |
≥ 10dB(UHF); ≥12dB(VHF) |
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Output Frequency Accuracy |
≤ ±5KHz (VHF); ≤10KHz (UHF) |
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Output Level |
115dBμV |
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Output Frequency Tuning Range |
±4MHz(0.5MHz step by) |
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Video/Audio Carrier Power Ratio |
10 ～20dB Adjustable |
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Spurious Harmonics |
≥ 60dB |
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Space between Video ＆ Audio Carrier Frequency |
6500KHz±2KHz |
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Adjacent Harmonics |
≤ -45dB |
| General | |
| Normal Working Condition | |
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Operation Temperature |
5～40°C |
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Relative Humidity |
≤ 85% |
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Atmospheric Pressure |
86~106Kpa |
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Power Supply Voltage |
AC 220V±10% |
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Frequency |
50Hz±2Hz |
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Power Consumption |
<20W |