Microyal Model 2500MB
860MHz Standard Adjacent Channel Modulator
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Microyal 2500MB 860MHz, standard adjacent channel modulator, is applicable for the CATV headend system. It's embedded with broadband amplifiers and outputs the fixed channel. With a good price and performance ratio, it's the best choice of multiple channels adjacent CATV headend system. This equipment adopts the special IC to modulate the frequency to IF, after being mixed, amplified and filtered, it outputs the fixed channel range from 47~860MHz. By using the high reliable IF SAW filter, it performs stably. |
Features:
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Specifications:
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RF |
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Output Frequency Range |
47MHz~860MHz (Fixed Channel ); |
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Output,PAL D(Ch1~56,z1~z43); |
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Output Level |
≥ 113dBμV |
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Output Level Range |
0 ～-10dB (Adjustable) |
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Video/Audio Carrier Power Ratio |
10～20dB (Adjustable) |
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Output Impedance |
75Ω |
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Spurious Harmonics |
≥ 60dB |
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Frequency Accuracy |
≤ ±10KHz（UHF;±5KHz（VHF） |
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Audio Frequency |
5.5MHz±2KHz |
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RF Output Return Loss |
≥ 10dB（UHF）;12dB（VHF） |
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Video |
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Input Level |
1.0Vp-p for 87.5% Mod. |
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Input Impedance |
75 Ω |
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Differential Gain |
≤ 5%@ 87.5% Modulation index |
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Differential Phase |
≤ 5°@ 87.5% Modulation index |
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C/L Delay |
≤ 45 ns |
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Frequency Response |
≤ 2dB |
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Modulation Range |
0 ～90% (Adjustable) |
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Video S/N Ratio |
≥ 55dB |
| Audio Input Level |
1Vp-p （for ±50KHz Dev） |
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Audio Harmonic Distortion |
≤ 0.8% |
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Audio Frequency Response |
±0.5dB |
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Input Impedance |
600 Ω |
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Audio S/N Ratio |
≥ 57dB |
| Audio Pre-emphasis | 50μs |
| General | |
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Operation Temperature |
0 ～40°C |
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Relative Humidity |
≤ 85% |
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Atmospheric Pressure |
86~106Kpa |
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Power Supply |
AC 220V±10%, 50±2Hz, ≤15W |
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Dimensions |
483mm×210mm×45mm |
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Weight |
3Kg |