声级计又叫(噪音计)是噪声测量中最基本的仪器。声级计一般由电容式传声器、前置放大器、衰减器、放大器、频率计权网络以及有效值指示表头等组成。声级计的工作原理是:由传声器将声音转换成电信号,再由前置放大器变换阻抗,使传声器与衰减器匹配。放大器将输出信号加到计权网络,对信号进行频率计权(或外接滤波器),然后再经衰减器及放大器将信号放大到一定的幅值,送到有效值检波器(或外按电平记录仪),在指示表头上给出噪声声级的数值。
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HS5671A型噪声测试仪既是一种测量指数时间计权声级的通用声级计,又是能测量时间平均声级的积分平均数字声级计和测量声暴露的积分…
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Measurement Level Range: 30 to 130 dB
Frequency Range: 31.5 Hz to 8 kHz
1.4 dB accuracy
Meets ANSI S1.4 Type 2 and …
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5 MHz to 1 GHz Frequency Range
Full Scan, Single Channel, and Spectrum Modes
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5–870 MHz Standard Frequency Coverage
Full Scan, Single Channel and Spectrum Modes
Data Logging
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Provides fast and efficient measurements including
Signal level measurement, tilt measurement to balance your system
…
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TR2 Signal Level Meter by Trilithic is an economical solution ideal for your basic HFC installation needs.
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WB4352可程式音量计
产品代码:WS04.00.02
产品特性:
分辨率0.1db,最大读值锁定功能
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WB4351可程式音量计
产品代码:WS04.00.02
产品特性:
分辨率0.1db,最大读值锁定功能
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WB4350可程式音量计
产品代码:WS04.00.02
产品特性:
分辨率0.1db,最大读值锁定功能
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WB4357音量计
产品代码:WS04.00.02
产品特性:
分辨率0.1db,分辨率:4位数
测量范围:30-130db(30-80db
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