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供应:99999
发货:3天内
GENERALFEATURES SPECIFICATIONS一般功能和规格 AR-814AR-824MeasuringRange30～130dBA30～130dBA测量范围35～130dBC35～130dBCAccuracy 1.5dB 1.5dB测量精确度FrequencyRange31.5HZ-8.5KHZ31.5HZ-8.5KHZ频率响应LinearityRange50dB50dB动态范围AC/DCOutput AC/DC信号输出AutoPowerShutOff 自动关机功能LowBatteryIndication 低电显示功能OverRangeIndication 过载提示Digit Resolution5Digits 0.1dB5Digits 0.1dB数位及分辨率TimeWeightingSelectionFast/SlowFast/Slow动态特性选择Microphone1/2InchElectretCondenserMicrophone麦克风1/2英寸电容式麦克风 FrequencyWeightingA CA C频率加权特性SoundMeasuringLevelSelection 测量档位选择MaxHoldFunction