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ar-814 | ar-824 | |
measuring range | 30~130dba | 30~130dba |
测量范围 | 35~130dbc | 35~130dbc |
accuracy | ±1.5db | ±1.5db |
测量精确度 | ||
frequency range | 31.5hz-8.5khz | 31.5hz-8.5khz |
频率响应 | ||
linearity range | 50db | 50db |
动态范围 | ||
ac/dc output | √ | √ |
ac/dc 信号输出 | ||
auto power shut off | √ | √ |
自动关机功能 | ||
low battery indication | √ | √ |
低电显示功能 | ||
over range indication | √ | √ |
过载提示 | ||
digit & resolution | 5digits & 0.1db | 5digits & 0.1db |
数位及分辨率 | ||
time weighting selection | fast/slow | fast/slow |
动态特性选择 | ||
microphone1/2 inch electret condenser microphone麦克风1/2 英寸电容式麦克风 | ||
frequency weighting | a & c | a & c |
频率加权特性 | ||
sound measuring level selection | √ | √ |
测量档位选择 | ||
max hold function | √ | √ |
最大值锁定 | ||
sampling frequency | 2 times/sec | 2 times/sec |