Product Overview
The National Instruments PXIe-2569 is a relay module for PXI Express systems. It provides 100 single pole single throw relay channels with a 1 A current rating. The module is designed for automated test systems that require flexible signal routing, device switching, and load connection. It is part of the NI PXI switch family and fits into compatible PXI Express chassis.
Relay modules are used when a test system must connect or disconnect signals to multiple devices under test. The PXIe-2569 provides a high channel count in a single PXI Express slot, which helps reduce system size and wiring complexity. The module is suitable for production test, design validation, and laboratory automation.
Relay Channels and Ratings
The PXIe-2569 provides 100 single pole single throw channels. Each channel can open or close a signal path under software control. The 1 A current rating supports switching of low power loads, sensor signals, and test points. Engineers should verify the voltage and current limits of the module for their specific application and use appropriate external protection where needed.
The relay architecture is designed for reliable operation in automated test environments. Relay switching can introduce settling time and contact wear, so test sequences should account for these characteristics. The module is intended for signal routing and low power switching rather than high power load control.
PXI Express Integration
The PXIe-2569 installs in a compatible PXI Express chassis and communicates with the controller over the PXI Express backplane. It can be synchronized with DMMs, source measure units, digitizers, and other PXI instruments through trigger lines and timing resources. This allows switching operations to be coordinated with measurement steps.
The module is supported by NI switch driver software and can be programmed with LabVIEW, LabWindows/CVI, Measurement Studio, and other compatible development environments. Engineers can create switching sequences that connect instruments to different test points, route signals to measurement devices, and isolate faulty channels.
Test System Benefits
A high channel count relay module can reduce the number of separate switch boxes and cables in a test rack. The PXIe-2569 provides dense switching in a single PXI Express slot, which helps improve system integration and maintainability. This is useful in high channel count automated test systems where many test points must be accessed in sequence.
The module can be used with other PXI switch modules to build larger switching networks. It can also be combined with analog measurement, digital I/O, and power instruments in the same chassis. The PXI platform provides a common software and timing environment for the relay module and other instruments.
Typical Applications
Automated test signal routing and device switching
Production test with multiple test points
Design validation and laboratory automation
Instrument to device under test connection
High channel count switching systems
PXI Express based test racks
The PXIe-2569 provides 100 single pole single throw relay channels rated at 1 A in a PXI Express module. Its high channel density and PXI integration make it suitable for automated test switching and signal routing applications.
