基于PXI的设备视频单元检测系统设计

Design of testing system of video frequency unit in equipment based on PXI

鉴于视频单元对设备可靠性的影响,设计了基于PXI总线的设备视频单元检测系统,根据PXI测试平台的特点,给出了总体设计方案。根据实际情况设计了系统接口电路,对接口电路关键部分多路选择开关和衰减调理电路进行了硬件设计。在对检测系统软件分析的基础上进行了软件设计,给出了激励信号产生部分和信号检测部分的软件流程。

The testing system of video unit based on PXI is designed because of its influence to the reliability. The blue print of this system is designed according to the character of PXI. The interface circuits are designed. The design details of multi-way selector and attenuation circuit are explained. The software is designed based on the analysis of the system. The flowcharts of signal engender and testing are given.