Product Overview
The National Instruments PXI-8105 is an embedded controller for PXI systems. It combines a dual core processor, system memory, internal storage, and common computer interfaces in a single PXI module. The controller is installed in a compatible PXI chassis and provides the processing platform for PXI instruments and data acquisition modules.
Using an embedded controller can simplify a PXI system by removing the need for an external desktop computer. This reduces cabling, improves physical integration, and makes the test system more compact. The PXI-8105 is suitable for automated test, laboratory measurement, industrial monitoring, and research applications that use PXI hardware.
Processing and System Resources
The controller provides a dual core processor and integrated system memory to support test and measurement software. It includes internal storage for the operating system, drivers, application software, and test data. The controller is designed to run NI software such as LabVIEW and other compatible development environments used for instrument control and data processing.
The controller communicates with PXI modules through the PXI backplane. This provides a direct connection between the controller and installed instruments. The integrated design supports deterministic communication and helps reduce latency between the test application and the measurement hardware. Engineers should confirm the supported memory and storage configuration for the specific unit and the software they plan to run.
Computer Interfaces
The PXI-8105 includes common computer interfaces for displays, peripherals, and networks. These interfaces typically include Ethernet, USB, serial, and display outputs. The exact port configuration depends on the controller version and system setup. These ports allow engineers to connect a monitor, keyboard, mouse, network cable, and other accessories directly to the controller.
The Ethernet connection supports network based communication for remote control, data transfer, and system integration. USB ports support storage devices and instrumentation accessories. Display outputs allow a local user interface for bench top use. These interfaces make the controller usable as a standalone PXI computer in a test rack.
Software and PXI Integration
The PXI-8105 is designed to work with NI software and drivers for PXI systems. It supports LabVIEW, LabWindows/CVI, Measurement Studio, and other development environments used for test and measurement. The controller can be used with NI-DAQmx, NI-DMM, NI-XNET, and other instrument drivers installed on the system.
The controller integrates with the timing and synchronization resources of the PXI chassis. PXI trigger lines and clocks are available to installed modules, allowing coordinated operation between instruments. The embedded controller can run the full test application, log data, and communicate with enterprise systems through its network interface.
Thermal and Installation Considerations
An embedded controller generates heat and must be installed where the chassis can provide adequate airflow. Engineers should verify the operating temperature range and power requirements for the planned configuration, especially when the chassis contains high power instruments. Slot placement and cable routing should not obstruct the controller cooling path.
Stable power and a clean ground reference help maintain reliable operation. The controller should be shut down properly before removal, and software should be configured to save data safely in the event of a power interruption. These practices reduce the risk of data loss and hardware stress.
Typical Applications
Embedded control of PXI test systems
Automated production test and measurement
Laboratory instrument control and data processing
Industrial monitoring and control systems
Rack mounted PXI systems
Research and development test benches
The PXI-8105 is a PXI embedded controller that combines processing, memory, storage, and computer interfaces in a single module. Its integration with PXI instruments and NI software makes it a practical controller for compact automated test and measurement systems.
