VXIPC-871B National Instruments VXIbus Controller

Overview of VXIbus Controller

The VXIbus controller is a key component in the instrument system based on the VXIbus standard, used to manage and control VXIbus devices, achieve communication with computers or other master devices, and coordinate the operation of various modules in the system.

General characteristics

Communication interface: It usually has multiple communication interfaces, such as PCI interface or USB interface for connecting to a computer, etc., to facilitate high-speed data transmission and command interaction with the host. For VXIPC-871B, it might be a VXIbus controller based on the PCI interface, which can quickly convey the instructions of the computer to the VXIbus module and feed back the data of the module to the computer.

Bus control capability: Capable of managing various signals of the VXI bus, including address bus, data bus and control bus, etc. It can perform addressing, reading and writing operations on devices on the VXI bus, support concurrent access and data transmission of multiple devices, and ensure coordinated and orderly communication among various modules in the system.

Clock and synchronization function: Provides clock signals for the VXI bus system to ensure that each module operates at a unified clock rhythm, achieving precise timing and synchronization. In addition, it may also have a triggering function, which can trigger VXI bus devices to perform data acquisition, measurement or other operations through software or external signals, meeting the synchronization requirements of different test applications.

Data processing and buffering: Possess certain data processing capabilities, such as data caching, format conversion, and simple data analysis, etc. Data can be temporarily stored and processed during the data transmission process, reducing the burden on the host and improving the overall performance of the system. For example, the raw data collected by the VXI bus module is cached and converted into a format recognizable by the computer before transmission.

Power management: Manage and monitor the power supply of the VXI bus system to ensure stable power supply for each module. It may have overvoltage and overcurrent protection functions. When the power supply is abnormal, it can cut off the power supply in time to protect the equipment in the system from damage.