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锁相放大器特征参数:测量信号的频率范围为1mHz至102kHz;满量程刻度输出时的输入电平为1nV至1V;时间常数为10μs至3ks,动态储备大于100dB。教学实验箱功能:强噪声背景下信号提取、微小阻抗测量、白噪声测量、声速测量等。并配套教学视频及教学讲义。概述中山大学物理学国家级示范中心从事微弱信号检测的科研及教学仪器十多年,推出了一系列面向科研及实验教学的微弱信号检测仪器,并申请了数十项专利。在科研方面推出的数字锁相放大器OE1022在稳定性、收敛
Lock-in amplifier features: Measuring signal frequency range 1mHz to 102kHz; full-scale output scale when the input level of 1nV to 1V; time constant of 10μs to 3ks, dynamic reserve greater than 100dB. Teaching experiment box function: signal extraction under strong noise background, small impedance measurement, white noise measurement, sound velocity measurement and so on. And supporting teaching video and teaching handouts. Overview Sun Yat-sen Physics National Demonstration Center engaged in weak signal detection of scientific research and teaching equipment for more than 10 years, launched a series of weak signal detection instruments for scientific research and experimental teaching, and applied for dozens of patents. In research and development of digital lock-in amplifier OE1022 in stability, convergence