摘要
在数据采集系统中,采集通道的时、频域特性不可能完全满足信号无畸变传输条件。为此,我们将通信系统中的均衡技术引入到数据采集系统中。文中从采集通道的最佳频率特性出发,首先介绍了一种通道特性测试方法,然后阐述了几种测试信号的产生方法,最后探讨了一种通道特性均衡技术。
In practical data acquisition system, owing to the parameter mismatching of all kinds of the circuit components, the time and frequency characteristic of the sample channel can't satisfy the condition without distortion. Recently years, In order to obtain transmitting signal without distortion, we have introduced the channel balance techniques of communication system into data acquisition system and used software compensation techniques to incease the whole performance of the system.In this paper,starting from analyzing the optimum frequency characteristic of channel in the data acquisition system, the method of testing frequency characteristic of sample channel is firstly introduced. Then, a few of methods of producing testing signal is described in detail. Finally, the technique of channel balance is discussed.
出处
《电子测量技术》
1999年第3期10-12,共3页
Electronic Measurement Technology
关键词
数据采集系统
通道特性
测试
均衡技术
Data acquisition system Channel characteristic Testing Channel balance
