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使用实时系统集成(RTSI)总线进行多数字触发。



主要软件: Driver Software>>NI-DAQ
主要软件版本: 7.3
主要软件修正版本: N/A
次要软件: N/A
硬件: Legacy DAQ Devices>>Digital I/O>>AT-DIO-32HS, Legacy DAQ Devices>>Analog Output>>NB-AO-6>>High-Speed Digital I/O>>AT-DIO-32HS

问题:
多功能I/O板卡(MIO)有最多一个硬件数字触发。请问我如何使用National Instruments的产品来触发一个有多线数字触发的数据采集系统?

解答:
你可以使用高速数字I/O卡(比如DIO-32HS)来实现。将DIO-32HS(6533系列)和MIO板卡以RTSI总线连接起来。将DIO-32HS配置成change detection模式并且将REQ信号接至RTSI。配置MIO板卡的数字触发源为REQ信号,这个信号现在已经存在于RTSI上了(来自DIO-32HS)。最后,将你的数字触发源连接到DIO-32HS板卡的输入线。下面附上的例子是用LabVIEW编写的。它把第一个端口配置成change detection模式,当任何输入线的逻辑状态改变时,就会激活REQ线。

相关链接:
Developer Zone Example: Multiple Digital Triggers Using RTSI between MIO Board and DIO Board
Developer Zone Example: Acquire N Scans with Multiple Digital Triggers (Efficiently)
Developer Zone Example: Performing Single-Shot Waveform Acquisition with Multiple Analog Software Triggers

附件:


multiple digital triggers with 32HS.zip - multiple digital triggers with 32HS.zip


报告日期: 04/03/2000
最近更新: 12/11/2007
文档编号: 1W2K474U