512-Crosspoint, 1-Wire PXI Matrix Switch Module—The PXI-2531 is a high-density PXI matrix switch module built to serve high-channel-count automated test systems. Featuring compact reed relays with switching speeds up to 2,000 cycles/s, the PXI-2531 is designed for low‐current, high‐speed switching. It also features onboard relay counting for relay monitoring and deterministic operation with hardware triggers to improve test throughput.