48-Channel, 1-, 2-, or 4-Wire, FET PXI Multiplexer Switch Module—The PXI‑2501 is a PXI switch module that you can configure as a multiplexer or matrix switch by using different terminal block accessories. It is ideal for applications that require high‐speed scanning of low‐voltage signals because it uses FET switches with small settling times. The PXI‑2501 also features a 1,024‐step scan list for deterministic scanning.