The National Instruments PXI-2541 (Part Number: 778572-41) is a robust PXI RF Matrix Switch Module designed for high-channel applications, providing significant flexibility in constructing switching networks. This module offers an 8x12 RF configuration, expandable to larger matrices such as 8x24 and 8x36 by interconnecting multiple PXI-2541 units through Row Out and Row In connectors. The module supports a maximum switch bandwidth of 300 MHz, with key RF performance metrics including an insertion loss of less than 2.1 dB and a typical isolation of over 75 dB. It is capable of handling signals up to 60 V or 0.5 A. The design incorporates reed relays that are highly sensitive to damage from switching capacitive and inductive loads, necessitating the addition of appropriate protection to enhance contact longevity. The path resistance combines relay contact resistance and trace resistance, with the contact resistance typically remaining low throughout the relay's operational life, increasing beyond 3.1 Ω as the relay approaches the end of its lifespan. The module measures 8.5 x 0.8 x 5.1 inches and weighs 14.46 ounces. While the PXI-2541 entered the maintenance phase on June 30, 2022, it continues to be available for purchase through Apex Waves, which provides ongoing buy, sell, and repair services for end-of-life National Instruments hardware. For more information or to request a quote, please contact a sales representative. User and maintenance manuals for the PXI-2541 are available for download.