价格:未填
供应:99999
发货:3天内
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最低指示每个范围之下限