PXI-8423 NI 异步接口 用于通过串行端口与仪器通信

PXI-8423 NI 异步接口 用于通过串行端口与仪器通信

PXI-8423 NI异步接口是指在请求发送后，客户端并不会立即收到响应结果。与同步接口不同，异步接口需要等待一段时间后才能得到相应的结果。通常情况下，异步接口可以通过消息队列或事件监听器来实现。当用户请求进入系统时，可以将任务提交给消费者或监听程序进行处理，并异步返回处理结果。

PXI-8423 NI具有64B FIFO、460.8 (kb/s)传输速率和光学隔离功能PXI国家仪器公司-8423/2(零件号:777737-02)是一个RS-485接口为了PXI。它是一个异步接口，用于通过串行端口与仪器通信。这种型号具有与微软2000、NT、XP、Me和9x的即插即用兼容性。因此，它带来了自动配置的优势，方便安装。该设备可以很容易地从用户当前的应用程序(如Visual Basic、Excel Visual、C++等)安装为标准串行端口。

PXI-8423 NI该型号有2端口和4端口两种配置。在双端口配置DB-9中，公连接器与RS232和RS485连接器的标准引脚排列结合在一起。的4端口版本倪PXI-8423配有模块化的10位电话插孔。但是，这些电话插孔可以转换为DB-25或DB-9插头连接器，使用的转换电缆可以单独购买。

这PXI国家仪器公司-8423/2提供高 级功能，如通用PCI、高达2 Mb/s的灵活波特率以及多处理器和超线程兼容性。通过这种模式，用户将能够与标准波特率在0.01%以内的器件进行通信。此外，它还允许与以57 b/s至2 Mb/s范围内的非标准波特率工作的设备进行通信。为了提高效率和速度，的超线程和多处理器兼容性PXI-8423/2允许用户利用zui新的电脑技术。该接口器件配有增强型串行驱动器，便于配置，性能先进，并可访问所有高 级收发器控制模式。

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PXI-8423 NI 异步接口 用于通过串行端口与仪器通信

PXI-8423 NI Asynchronous interface means that the client does not receive the response result immediately after the request is sent. Unlike synchronous interfaces, asynchronous interfaces have to wait for some time to get the corresponding result. Typically, asynchronous interfaces can be implemented through message queues or event listeners. When the user requests access to the system, the task can be submitted to the consumer or listener for processing, and the processing result is returned asynchronously.

The PXI-8423 NI features 64B FIFO, 460.8 (kb/s) transfer rate, and optical isolation. The PXI National Instruments -8423/2(Part number :777737-02) is an RS-485 interface for the PXI. It is an asynchronous interface for communicating with instruments via serial ports. This model has plug-and-play compatibility with Microsoft 2000, NT, XP, Me, and 9x. Therefore, it brings the advantage of automatic configuration for easy installation. The device can be easily installed as a standard serial port from the user's current applications such as Visual Basic, Excel Visual, C++, etc.

PXI-8423 NI This model is available in 2-port and 4-port configurations. In the dual-port configuration DB-9, the male connector is combined with the standard pin arrangement of the RS232 and RS485 connectors. The 4-port version Ni PXI-8423 comes with a modular 10-bit telephone jack. However, these phone jacks can be converted to DB-25 or DB-9 plug connectors using conversion cables that can be purchased separately.

This PXI National Instruments -8423/2 offers advanced features such as universal PCI, flexible baud rates up to 2 Mb/s, and multi-processor and hyper-threading compatibility. With this mode, users will be able to communicate with devices with standard baud rates within 0.01%. In addition, it allows communication with devices operating at non-standard baud rates in the range of 57 b/s to 2 Mb/s. For increased efficiency and speed, the hyper-threading and multiprocessor compatibility of the PXI-8423/2 allows users to take advantage of the latest computer technology. The interface device features an enhanced serial driver for easy configuration, advanced performance, and access to all advanced transceiver control modes.

PXI-8423 NI 异步接口 用于通过串行端口与仪器通信