Abstract : the main points about development of application programs based on visa for vxibus are presented , including addressing an instrument , accessing a message - based device and a register - based device , handling events and errors . some practical programs are presented 文摘:介紹了利用visa庫進行vxi總線編程的幾個要點,包括儀器的尋址、消息級器件的訪問、寄存器級器件的訪問、異步事件處理和出錯處理等,并給出了示例程序。
The configuration that uses ieee - 13 94 to control a vxi system is introduced . chapter 2 describes the resource manager application of message - based device 13 94 - vxi controller and the mechanism of register - based device arbitrary waveform generator ( awg ) . the key technology of interface circuit and direct digital synthesis in awg module is discussed explicitly 本文先對vxi總線技術進行了概略的介紹,在此基礎上,對一具體的vxi寄存器基任意波形發生器模塊進行展開,介紹了任意波形發生器模塊與vxi機箱背板總線通訊的接口電路部分及波形發生機理的核心部分的直接數字合成技術。