GENERALFEATURES SPECIFICATIONS一般功能和規(guī)格 AR-814AR-824MeasuringRange30～130dBA30～130dBA測(cè)量范圍35～130dBC35～130dBCAccuracy 1.5dB 1.5dB測(cè)量精確度FrequencyRange31.5HZ-8.5KHZ31.5HZ-8.5KHZ頻率響應(yīng)LinearityRange50dB50dB動(dòng)態(tài)范圍AC/DCOutput AC/DC信號(hào)輸出AutoPowerShutOff 自動(dòng)關(guān)機(jī)功能LowBatteryIndication 低電顯示功能OverRangeIndication 過(guò)載提示Digit Resolution5Digits 0.1dB5Digits 0.1dB數(shù)位及分辨率TimeWeightingSelectionFast/SlowFast/Slow動(dòng)態(tài)特性選擇Microphone1/2InchElectretCondenserMicrophone麥克風(fēng)1/2英寸電容式麥克風(fēng) FrequencyWeightingA CA C頻率加權(quán)特性SoundMeasuringLevelSelection 測(cè)量檔位選擇MaxHoldFunction