A Remote Amplitude Frequency Characteristic Testing Device

J. Lee, Zhixian Lin, Weizun Zheng, Zefeng Wang, Jing Liu
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引用次数: 0

Abstract

This paper introduces a novel amplitude frequency characteristic testing device. The paper analyzes not only the hardware structure of the device which mainly consists of a sweep generator based on DDS+AGC, an attenuation circuit, a peak detection circuit with compensation, the control unit based on FPGA, a display module by VGA and a serial transmission mode with the capacity of anti-jamming, but also the design of the control unit and the terminal unit based on FPGA. The device was realized and debugged in the end. Through the debugging, it shows that the design features a frequency band range up to 20Mhz, output level which is stable and adjustable, and a remote mode with transmission distant of 1.5 meter. The device would be useful and convenient in the experiment teaching lessons.
一种远程幅频特性测试装置
介绍了一种新型的幅频特性测试装置。本文分析了该装置的硬件结构,主要由基于DDS+AGC的扫描发生器、衰减电路、带补偿的峰值检测电路、基于FPGA的控制单元、VGA显示模块和具有抗干扰能力的串行传输方式组成,并设计了基于FPGA的控制单元和终端单元。最后对该装置进行了实现和调试。通过调试表明,该设计的频段范围可达20Mhz,输出电平稳定可调,远程模式传输距离为1.5米。该装置在实验教学中使用方便。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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