Kim Young Jin, Kunkler Brandon, Liu Chen-Yu, Visser Gerard
CEEM, Physics Department, Indiana University, Bloomington, Indiana 47408, USA.
Rev Sci Instrum. 2012 Jan;83(1):013502. doi: 10.1063/1.3676163.
We have built a high precision (24-bit) data acquisition (DAQ) system capable of simultaneously sampling eight input channels for the measurement of the electric dipole moment of the electron. The DAQ system consists of two main components: a master board for DAQ control and eight individual analog-to-digital converter (ADC) boards for signal processing. This custom DAQ system provides galvanic isolation of the ADC boards from each other and the master board using fiber optic communication to reduce the possibility of ground loop pickup and attain ultimate low levels of channel cross-talk. In this paper, we describe the implementation of the DAQ system and scrutinize its performance.
我们构建了一个高精度（24位）数据采集（DAQ）系统，该系统能够同时对八个输入通道进行采样，以测量电子的电偶极矩。DAQ系统由两个主要组件组成：一个用于DAQ控制的主板和八个用于信号处理的独立模数转换器（ADC）板。这个定制的DAQ系统利用光纤通信实现了ADC板之间以及与主板的电气隔离，以减少地环路拾取的可能性，并实现极低水平的通道串扰。在本文中，我们描述了DAQ系统的实现并仔细研究了其性能。
