but with the high demand of ats on higher speed, data / pattern storage, data / pattern display and data / pattern edit, the project of pattern i / o module with 32 channels based on digital i / o module have been finished . the pattern i / o module can provide signal resource by software panel and transfer data by high speed 随着vxi测试系统对i/o接口速度提高、数据/图形存储能力以及数据/图形显示、编辑能力的新要求,项目完成了32通道,每通道存储深度为64kbit,100mhz速率的vxi总线图形i/o模块的设计。