中频调制器MediumFrequencyModulato

SPECIFICATIONS特点介绍BLOCKDIAGRAM原理框图SHENZHENNEWJIASHIDAELECTRONICALCO.,LTD.深圳市新佳视达电子有限公司中频调制器MediumFrequencyModulator860D外形尺寸Dimension(mm):482.5×280×46前端设备Front-endEquipment双平衡调制变频模式（双面表面滤波器）;频率合成型锁相环路控制，图像载波、伴音载波双重外接中频回路（可选）；表面贴装工艺。SAW-VSBfilterisusedinmediumfrequencyprocessingpart,doubleThefrequencyconvertmodeofthedoubleSAWfilterisdoublebalanceFrequencycompositionPhaseLockLoopscontrolVideocarrierwaveExternalmediumfrequencylooplinkforselection;Stickingoncovertechnics.输出频率：47～862MHz（固定频道输出）；Frequencyrangeoftheoutputport:47～862MHz(fixedchanneloutput);中频信号处理，双声表面滤波器（可选），SAW滤波-VSB滤波；锁相；SAWfilterforselection;modulation;andAudiocarrierwave;860DSHENZHENNEWJIASHIDAELECTRONICALCO.,LTD.深圳市新佳视达电子有限公司参数Parameter输入阻抗(Ω)InputImpedance输入电平（峰峰值）(V)InputLevel(Vp-p)色亮时延差(ns)DifferenceBetweenColourandBright指标Specifications≤30.7～1.4带内频响(dB)FrequencyResponse≥26≤±1.0≤2≤4050600(不平衡unbalance)≥55钳位能力(dB)Clampingability音频输入电平(dBmV)InputAudioLevel0(50Hz～15kHz)≤1视频中频电平(dBmV)34伴音中频电平(dBmV)75（不平衡unbalance）≤±1.017视频部分VideoPart音频部分AudioPart信噪比(dB)S/N微分相位(°)DifferentialPhase输入阻抗(Ω)InputImpedance频率响应(dB)FrequencyResponse频率偏移(kHz)FrequencyexcursionAudioMediumFrequencyLevelVideoMediumFrequencyLevel中频部分MediumFrequencyPart微分增益(%)DifferentialGain预加重(μs)AggravationBefore谐波失真(%)SyntonicWavedistortion参数Parameter输出频率(MHz)FrequencyRangeOutputPort指标Specifications47～862输出电平(dBmV)OutputLevel≥1455755～95AC220±10%输出反射损耗(dB)ReturnLossOutputPort工作温度(℃)WorkingTemperature-5～+55±320射频部分RFPart整机特性UnitaryCharacteristics输出电平调整(dB)OutputLevelAdjustment输出阻抗(Ω)OutputImpedance功耗(W)PowerLoss频率误差(kHz)FrequencyError带外抑制(dB)RestraintOutBand-20～0≥60≥60寄生输出抑制(dB)AutoeciousnessOutputRestraint供电电压(V)PowerSupplyVoltage工作湿度(%)WorkingHumidity31.538残留边带带宽(MHz)RemainderWebbingBandwidth0.75伴音载波中频频率(MHz)AudioCarrierMediumFrequency视频载波中频频率(MHz)VideoCarrierMediumFrequency≥14反射损耗(dB)ReturnLoss外型尺寸(mm)Dimension中频部分MediumFrequencyPart482.5×280×46≤±25中频调制器MediumFrequencyModulator前端设备Front-endEquipment