A Logarithmic Amplifier Automatic Test System Base on GPIB Interface

被引：0

作者：

Pang, Youbing ^{[1
]}

Wang, Ruoxu ^{[1
]}

Tang, Wanjun ^{[1
]}

机构：

[1] Sichuan Inst Solid State Circuits, Chongqing 400060, Peoples R China

来源：

2008 7TH WORLD CONGRESS ON INTELLIGENT CONTROL AND AUTOMATION, VOLS 1-23 | 2008年

关键词：

GPIB interface; Automatic test; Logarithmic amplifier; Dynamic range; Logarithmic precision; Adaptive line fitting;

D O I：

10.1109/WCICA.2008.4594240

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

An automatic test system for logarithmic amplifier is presented, which is developed using GPIB interface based on Windows operating system and Visual Basic programming environment. With this system, parameters of logarithmic amplifiers, such as logarithmic dynamic range and logarithmic precision, can be automatically tested. Using an adaptive fine fitting algorithm, both dynamic accuracy and dynamic range are improved. In this system, timers in VB are used to coordinate different peripheral devices for synchronous operation. The system has the advantage of high efficiency and small human error, thus greatly improving test efficiency, and it can satisfy the requirement of automatic test of logarithmic amplifiers with a log accuracy of +/- 0.2 dB and a log dynamic range of 130 dB.

引用

页码：8362 / 8365

页数：4