Screw Terminal, Ribbon, 4x64, 1-Wire PXI Module Matrix Terminal Block—The TB-2634 provides the necessary routing to configure the PXI-2529 PXI Matrix Switch Module as a 1-wire 4×64 matrix. You can directly connect the TB-2634 to the front panel I/O connectors of the PXI-2529. The TB-2634 includes ribbon cable headers that provide access to the rows and columns of the matrix.