The optical signal was amplified by a lock-in amplifier.

光信号用锁定放大器放大，进行动态测量。

Its signal magnifying and processing achieved by lock-in amplifier.

它的信号放大、处理主要由锁相放大器完成。

Used lock-in amplifier SR844 for hardware phase detection and compared with software detection.

利用锁相放大器SR844对产生的信号进行模拟鉴相，并同软件鉴相结果比较分析；

A lock-in amplifier is used to supply the driving signal and to detect the output signal corresponding to the sample's strain.

使用锁相放大器提供驱动信号，并同时检测对应于样品形变的输出信号。

It USES a lock-in amplifier for testing the signal and a personal computer for automatic data scanning, collecting and processing.

利用锁相放大器追踪测量信号，微机自动扫描、采集和处理数据。

A measurement system for gas dynamic concentrations based on TDLAS was constructed by using an auto-balanced photo receiver and a digital lock-in amplifier.

基于自平衡激光接收器和数字锁定放大器构造了TDLAS汽车尾气动态浓度测量系统。

In this paper, we reported a measuring system of spectral response for silicon solar cell with lock-in amplifier and spectroscopic and show its testing result.

文章介绍了用分光光度计、精密锁相器等制作的太阳电池光谱响应测量系统的方法及测量结果。

This paper describes a method of suppressing correlation jamming at the frequency of reference signal which cannot be suppressed by lock-in amplifier and Boxcar integrator.

锁定放大器和取样积分器都不能抑制与参考信号同频率的干扰。 本文提出了一种能抑制这种干扰的方法。

This paper reports a technique used lor improving the stability of the laser probe consisting of an acoustooptic modulator, an analogue divider and an auto-lock-in amplifier.

本文介绍了一种用声光调制器、模拟除法器和自动锁相放大器来改进激光探针测试系统稳定性的方法。

By narrowing the bandwidth of the signal and amplifying it by a lock-in amplifier, the fluctuating components of the signal can be shown on an oscillograph with lock-in amplifier.

锁相放大技术对被测信号进行窄带放大，锁相放大器结合示波器输出了被测信号的周期变化部分，实现了光热法测量中微弱信号的测量。

For the signals are very weak, the lock-in amplifier is employed to extract the signals in the circuit design. It can inhabit the noise in the most and maximize the signal-to-noise.

在电路设计上采用锁相放大器来提取微弱信号，最大限度的抑制噪声，提高系统的信噪比。

The measurement system of magnetomechanical coupling coefficient for giant magnetostrictive materials has been built by using a lock-in amplifier, according to the measurement theory.

根据磁机械耦合系数的测量原理，利用锁相放大器建立了磁机械耦合系数测量系统，并应用该系统测量了巨磁致伸缩材料的磁机械耦合系数。

A method of implementing digital lock in amplifier with DSP (digital signal processor) and sampling ADC (analog digital converter) is discussed.

探讨了用DSP(数字信号处理器)和采样adc(模数转换器)实现数字锁定放大器的一种方法。

We use the principle of lock - in amplifier to amplify the weak singal and send it to A/ D conversion properly.

为将接收二极管上的微弱信号送到A／D转换器处理，采用锁定放大原理设计接收信号的调理电路。

By using a double phase lock in amplifier to measure the AC strain, the measurement error can be decreased to 0.4% of the total measurement range.

如果使用双相位锁相放大器测量交变的被测量，误差将减小到全量程的0.4%以内。