NI SCXI-1130 Matrix Expansion
Matrices of the NI SCXI-1130 can be expanded in two ways: by expanding rows and expanding columns.
To expand columns, use the matrix expansion cable that connects directly into the terminal block. Each expansion cable routes eight 1-wire rows from one terminal block to the next. To form an 8x64 matrix using NI SCXI-1379 terminal blocks, connect two NI SCXI-1379 terminal blocks using one matrix expansion cable.
To expand rows, use the matrix plugs that connect to the top and bottom of selected terminal blocks. Matrix expansion plugs connect the columns of adjacent matrix switch modules. To form an 8×64 1-wire matrix using NI SCXI-1378 terminal blocks, simply connect one matrix expansion plug on the top or the bottom of two adjacent NI SCXI-1378 terminal blocks.
| Terminal Block | Configuration (Row x Column) | Column Expansion Via Row Connection | Row Expansion Via Column Connection |
|---|---|---|---|
| NI SCXI-1378 | 4×64 1-wire | Yes, with row connection cable. Examples: 4×128, 4×192, 4×256, and so on. | Yes, with column connection plug. Examples: 8×64, 12×64, 16×64, and so on. |
| 4×32 2-wire | Yes, with row connection cable. Examples: 4×64, 4×96, 4×128, and so on. | Yes, with column connection plug. Examples: 8×32, 12×32, 16×32, and so on. | |
| NI SCXI-1379 | 8×32 1-wire | Yes, with row connection cable. Examples: 8×64, 8×96, 8×128, and so on. | Yes, with column connection plug. Examples: 16×32, 24×32, 32×32, and so on. |
Refer to the terminal block installation guides for additional information on column and row expansion of matrices.