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RMS/THD 功能:<br />

滤波器 应用<br />

FLAT<br />

平坦的频率响应(无滤波器)<br />

A-计权<br />

A-计权滤波器<br />

C-计权<br />

C-计权滤波器依据<br />

IEC 61672 标准<br />

HP400<br />

高通 400 Hz ,依据 DIN<br />

45045 标准, -120dB/dec.<br />

HP19k<br />

高通 19 kHz<br />

预设的测试设定。<br />

在声音广播应用上依据 IEC61672 标准测<br />

量待测体残余噪声。<br />

特殊应用。<br />

将任何电源频率成分从测试信号中移除。<br />

将测量信号中任何低频成分移除,以测量<br />

关键的公共广播系统中任何 20kHz 导引<br />

音电平。<br />

16

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