SIGNAL MEASURING INSTRUMENT LOCK-IN AMPLIFIER

被引：0
|
作者：
Tashev, Tasho [1 ]
机构：
[1] Tech Univ Sofia, Dept Elect Measurement, 8 Kliment Ohridski, Sofia, Bulgaria
来源：
PROCEEDINGS OF THE 7TH WSEAS INTERNATIONAL CONFERENCE ON CIRCUITS, SYSTEMS, ELECTRONICS, CONTROL AND SIGNAL PROCESSING (CSECS'08) | 2008年
关键词：
measuring error; noises; phase sensitive; digital lock-in amplifier; analog to digital converter; design concept;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The main objective of this paper is to present signal measuring error caused by noises and nonlinearities in phase sensitive detector based analog Lock-in amplifier and their improvement in digital signal processor. Design concept of digital lock-in amplifier is based on numerical manipulation of digitized reference and measuring signals. A high speed 18 bit accurate analog to digital converter and 16/24 bit accurate digital signal processor based lock-in amplifier made a historical break through in the performance of lock-in amplifier.
引用
收藏
页码：243 / +
页数：2
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