The National Instruments PXI-2546 (Part Number: 778572-46) is a high-performance RF multiplexer switch module designed for use in hardware-in-the-loop (HIL) testing environments. This module is specifically engineered to facilitate fault insertion or signal simulation, enabling the evaluation of Electronic Control Unit (ECU) behavior under various fault conditions. Such functionality is crucial for applications in automotive, aerospace, and industrial control systems, where verifying the ECU's response to specific fault scenarios is of paramount importance. The PXI-2546 optimally integrates into test systems by allowing seamless switching between normal operational states and various fault conditions, including short circuits, power interruptions, and open circuits.

Key features of the PXI-2546 include hardware triggering, onboard relay count tracking, and customizable switching topologies to meet specific application requirements. Supporting up to 2.7 GHz bandwidth, the module delivers robust RF performance with an insertion loss of less than 1.5 dB (with typical performance under 1.25 dB) and a Voltage Standing Wave Ratio (VSWR) of less than 1.7 (typical less than 1.6). The design incorporates electromechanical, latching relays, maximizing reliability and performance while ensuring precise control of up to four channels across two banks. The module is also compatible with NI Switch Executive software, which enhances its configurability and management capabilities in complex switch routing scenarios.

With compact dimensions of 8.5 x 0.8 x 5.1 inches and a lightweight design at 9 ounces, the PXI-2546 is optimized for integration into various testing setups. It supports a maximum switching voltage of 30 V and a maximum RF power of 10 W, making it a versatile solution for demanding applications across multiple industries.