1.Introduction
The SK-16M is a space saving,fixed channel modulator sysetm.It consists of 16 individual,vertically mounted,fixed frequency modulators and an efficient swithcing type power supply module.It is designed for 19” rack mounting.
Each modulator is SAW filtered and is factory set to the desired channel and proper offset.Precise frequency is maintained with PLL circuitry.It offers
excellent video performance and high reliability in 4U rack.
excellent video performance and high reliability in 4U rack.
FEATURES
.Easy setup,Internal fans for cooling modulators
.Only one RF output.No need combiner
.Precise frequency control with PLL circuitry
.Each modulator has its control panel
.Also available in NTSC,all PAL configuration
2.Specification
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Frequency
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47～860MHz
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Output Level
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≥105dBμV
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Output Level Adj.Range
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0～-20dB (Adjustable)
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A/V Ration
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-10dB～-30dB (Adjustable)
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Output Impedance
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75Ω
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Spurious Output
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≥60dB
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Frequency Accuracy
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≤±5KHz
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Output Return Loss
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≥12dB(VHF); ≥10dB(UHF)
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Video Input Level
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1.0Vp-p(87.5% Modulation)
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Input Impedance
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75Ω
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Differential Gain
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≤5%(87.5% Modulation)
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Differential Phase
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≤5°(87.5% Modulation)
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Group Delay
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≤45 ns
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Visual Flatness
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±1dB
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Depth Adjust
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0～90%
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Video S/N
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≥55dB
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Aduio Input Level
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1Vp-p(±50KHz)
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Audio Input Impedance
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600Ω
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Audio S/N
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≥57dB
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Audio Pre-emphassis
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50μs
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Dismension
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19Inch 4U standard Size
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