基于VXI总线的新型任意波形发生器的设计

A New Arbitrary Waveform Generator Based VXI Bus

基于 VXI总线的任意波形发生器是随着计算机技术和微电子技术在测试仪器中的应用而形成和发展起来的一类新型测试仪器。任意波形发生器的价值在于它能真正产生任意波形。文中提出了一种新型的任意波形发生器结构 ,介绍了基于 VXI总线 C尺寸任意波形发生器设计的全过程 ,开发了 VXI总线寄存器基接口、用DDS技术设计了功能电路、开发了 AWG的软面板、应用控制程序和仪器驱动器。所设计的任意波形发生器的特点是 :高速、模块化、方便的波形输入以及和 VXI资源相结合。该任意波形发生器模块已应用于模块化雷达自动测试设备中 ,提供测试系统所需要的任何波形激励信号。

A arbitrary waveform generator (AWG) based VXI bus is a new instrument.It was developed with computer technology and microelectronics.AWG not only can instead of function and special wave generator but also can generate real arbitrary waves.This paper proposes a new structure of arbitrary waveform generator and introduces a whole design process of C size AWG module based VXI bus in detail. VXI bus register based interface is exploited, AWG's function circuits is designed by using DDS technology, and control program,soft front panel and instrument driver are developed.The characteristics of this new AWG are high speed,modularization,conveniently waveform input and in combination with VXI resource.The AWG module has been applied to automatic test equipment of modularization radar and the stimulation signals to the test system are provided.