The National Instruments TB-2631B Terminal Block (Part Number: 781688-01) is specifically engineered for use with the PXI-2530B Switch Module, which operates as a versatile reed relay multiplexer with a wide array of configurations. This accessory is designed to be installed in front of the host switch, ensuring uninterrupted signal flow through its dedicated screw terminals. The TB-2631B supports two configurations: a 4 x 32 (one-wire) matrix and a 4 x 16 (two-wire) matrix, making it ideal for applications that require frequent reconfiguration. It offers a 160-position rear connector that directly plugs into the PXI-2530B Switch Module's front connector. Access to the screw terminals is facilitated by a removable top cover. The TB-2631B is compatible with nearly all National Instruments PXI Chassis and integrates multiple features to protect signal integrity, including a strain-relief bar to minimize cable movement and chassis screws for secure assembly with the host module. The terminal block ensures durability with a 160-position connector capable of handling voltages up to 60 VDC and currents up to 0.4 amperes. Additionally, it includes separate screw terminals for TRIGIN and TRIGOUT signals optimized for +5V applications. While the TB-2631B has been marked as obsolete by National Instruments, it remains available for purchase and repair through Apex Waves. Users can access the TB-2631B User Manual and Maintenance Manual online. For pricing information, please contact a sales representative directly.