详细说明国际规范IECPub651Type2,ANSIS1.4Type2频率范围31.5Hz-8KHzA加权30dB-130dBC加权30dB-130dB檔位6檔位,间隔10-dB30-80dB/40-90dB/50-100dB/60-110dB/70-120dB/80-130dB自动换档30-130dB时间加权FastandSlow动态范围50dB数字显示4位数LCD(0.1dB分辨率)Quasi-analogbarindicator1dBdisplaysteps,50dBdisplayrange,updatedevery50ms.过载指示每个范围之上限***低指示每个范围之下限麦克风1/2inch电容式麦克风模拟AC/DC输出0.707Vrms(atfullscale),10mVDC/dB.记录(Datalogging)可记录16000笔资料操作及储存温湿度0-50℃,10-90%RH电源one9Vbattery尺寸及重量265(L)x72(W)x21(H)mm&325g附件使用说明书,电池,RS-232Connectingcable携带盒,调整起子,软件,风罩,9Pinto25Pin转换头changer,3.5fplug)