128-Crosspoint PXI Matrix Switch Module—The PXI-2530 switch module offers seven multiplexer/matrix configurations. The multiplexer configurations are 128x1 (1-wire), 64x1 (2-wire), 32x1 (4-wire), and eight banks of 16x1 (1-wire). The matrix configurations are 4x32 (1-wire), 8x16 (1-wire), and 4x16 (2-wire). You must select the appropriate terminal block to use with a specific configuration. The TB-2630 configures the switch as a multiplexer, and the TB-2631 and TB-2632 configure the switch as matrices.