NI SCXI-1129 2-Wire 8×32 Matrix Topology
The NI SCXI-1335 terminal block provides connections to the NI SCXI-1129 in the 2-wire 8×32 matrix topology. The following figure represents the NI SCXI-1129 in the 2-wire 8×32 matrix topology.
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Making a Connection
The SCXI-1129 in this topology contains an 8×32 matrix. In this topology, for example, you can connect r1 to c0. When connecting signals for r1, you would connect them to R1H and R1L in the terminal block. When connecting signals for c0, you would connect them to C0H and C0L in the terminal block.
Notice that you can connect to the high-voltage analog bus (HVAB) for routing signals to the back of the switch module.
You can connect the channels of the NI SCXI-1129 using the niSwitch Connect Channels VI or the niSwitch_Connect function. For example, to connect row 1 column 1, call the niSwitch Connect Channels VI or the niSwitch_Connect function with the channel 1 parameter set to r1 and the channel 2 parameter set to c1.
When scanning the NI SCXI-1129, a typical scan list entry could be r1->c1;. This entry routes the signal connected to row 1 to column 1.
Bank Connection Diagram
Terminal Block Connections
The SCXI-1335 terminal block creates the following connections to operate the NI SCXI-1129 as a 2-wire 8×32 matrix. Refer to the figure in the Pinout section for pin locations.
| Connection | Pins |
|---|---|
| R0H | B1R0+ to B2R0+ |
| R0L | B1R0- to B2R0- |
| R1H | B1R1+ to B2R1+ |
| R1L | B1R1- to B2R1- |
| R2H | B1R2+ to B2R2+ |
| R2L | B1R2- to B2R2- |
| R3H | B1R3+ to B2R3+ |
| R3L | B1R3- to B2R3- |
| R4H | B3R0+ to B4R0+ |
| R4L | B3R0- to B4R0- |
| R5H | B3R1+ to B4R1+ |
| R5L | B3R1- to B4R1- |
| R6H | B3R2+ to B4R2+ |
| R6L | B3R2- to B4R2- |
| R7H | B3R3+ to B4R3+ |
| R7L | B3R3- to B4R3- |
| C0H | B1C0+ to B3C0+ |
| C0L | B1C0- to B3C0- |
| C1H | B1C1+ to B3C1+ |
| C1L | B1C1- to B3C1- |
| C2H | B1C2+ to B3C2+ |
| C2L | B1C2- to B3C2- |
| C3H | B1C3+ to B3C3+ |
| C3L | B1C3- to B3C3- |
| C4H | B1C4+ to B3C4+ |
| C4L | B1C4- to B3C4- |
| C5H | B1C5+ to B3C5+ |
| C5L | B1C5- to B3C5- |
| C6H | B1C6+ to B3C6+ |
| C6L | B1C6- to B3C6- |
| C7H | B1C7+ to B3C7+ |
| C7L | B1C7- to B3C7- |
| C8H | B1C8+ to B3C8+ |
| C8L | B1C8- to B3C8- |
| C9H | B1C9+ to B3C9+ |
| C9L | B1C9- to B3C9- |
| C10H | B1C10+ to B3C10+ |
| C10L | B1C10- to B3C10- |
| C11H | B1C11+ to B3C11+ |
| C11L | B1C11- to B3C11- |
| C12H | B1C12+ to B3C12+ |
| C12L | B1C12- to B3C12- |
| C13H | B1C13+ to B3C13+ |
| C13L | B1C13- to B3C13- |
| C14H | B1C14+ to B3C14+ |
| C14L | B1C14- to B3C14- |
| C15H | B1C15+ to B3C15+ |
| C15L | B1C15- to B3C15- |
| C16H | B2C0+ to B4C0+ |
| C16L | B2C0- to B4C0- |
| C17H | B2C1+ to B4C1+ |
| C17L | B2C1- to B4C1- |
| C18H | B2C2+ to B4C2+ |
| C18L | B2C2- to B4C2- |
| C19H | B2C3+ to B4C3+ |
| C19L | B2C3- to B4C3- |
| C20H | B2C4+ to B4C4+ |
| C20L | B2C4- to B4C4- |
| C21H | B2C5+ to B4C5+ |
| C21L | B2C5- to B4C5- |
| C22H | B2C6+ to B4C6+ |
| C22L | B2C6- to B4C6- |
| C23H | B2C7+ to B4C7+ |
| C23L | B2C7- to B4C7- |
| C24H | B2C8+ to B4C8+ |
| C24L | B2C8- to B4C8- |
| C25H | B2C9+ to B4C9+ |
| C25L | B2C9- to B4C9- |
| C26H | B2C10+ to B4C10+ |
| C26L | B2C10- to B4C10- |
| C27H | B2C11+ to B4C11+ |
| C27L | B2C11- to B4C11- |
| C28H | B2C12+ to B4C12+ |
| C28L | B2C12- to B4C12- |
| C29H | B2C13+ to B4C13+ |
| C29L | B2C13- to B4C13- |
| C30H | B2C14+ to B4C14+ |
| C30L | B2C14- to B4C14- |
| C31H | B2C15+ to B4C15+ |
| C31L | B2C15- to B4C15- |
Pinout
The following figure identifies the pins for the NI SCXI-1129.
