PXI-2597
NI交换机使用PXI平台的固有定时和同步功能与PXI chassis1内的其他仪器进行通信。您可以将开关连接列表存储在开关模块上的内存中，然后使用集成硬件扫描和触发引擎推进开关顺序，并与任何可以发送和接收数字触发器的PXI仪器（如DMM或示波器）快速通信。这种切换方法消除了软件开销，并减少了与传统软件控制的切换操作相关的总线延迟，以实现更快的测试执行和更多的可重复计时。1大多数NI开关上都有触发功能。要检查开关模块是否支持此功能，请参考产品规范文档的“触发器特性”部分。有问题吗？联系我们第30页| | PXI开关模块NI-Switch软前面板NI-Switch驱动程序软件包括一个交互式软前面板，可实现全面的开箱即用功能。此交互式软前面板允许您通过简单的单击来配置交换机拓扑和更改交换机连接。此外，您可以使用调试驱动程序会话模式在自动测量期间监视和调试交换机。例如，您可以监视哪些信号路径处于活动状态，哪些继电器处于打开/关闭状态，以及每个继电器的使用次数。NI-SWITCH应用程序编程接口（API）除了软前面板之外，NI-SWITCH驱动程序还包括一个的API，可与多种开发选项（如LabVIEW、C、C#等）配合使用。该驱动程序还提供了对帮助文件、文档和数十个可作为应用程序起点的现成装运示例的访问。

NI switches use the inherent timing and synchronization capabilities of the PXI platform to communicate with other instruments within the PXI chassis1. You can store a list of switch connections in memory onboard the switch module and then use the integrated hardware scanning and triggering engine to advance the switch sequence and rapidly communicate with any PXI instrument that can send and receive digital triggers, such as DMM or oscilloscope. This advanced switching method removes the software overhead and reduces the bus latency associated with traditional software-controlled switching operations for faster test execution with more repeatable timing. 1 Triggering is available on most NI switches. To check if this feature is supported by a switch module, reference the “Trigger Characteristics” section of the product specification document. Have a question? Contact Us Page 30 | ni.com | PXI Switch Modules NI-SWITCH Soft Front Panel The NI-SWITCH driver software includes an interactive soft front panel for full out-of-the-box functionality. This interactive soft front panel allows you to configure the switch topology and change switch connections with a simple click. In addition, you can use the Debug Driver Session mode to monitor and debug the switch during automated measurement. For example, you can monitor which signal paths are active, which individual relays are open/closed, and how many times each relay has been used. NI-SWITCH Application Programming Interface (API) In addition to the soft front panel, the NI-SWITCH driver includes a best-in-class API that works with a variety of development options such as LabVIEW, C, C#, and others. The driver also provides access to help files, documentation, and dozens of ready-to-run shipping examples you can use as a starting point for your application.