NI SCXI-1129 2-Wire Dual 8×16 Matrix Topology

NI Switches

NI SCXI-1129 2-Wire Dual 8×16 Matrix Topology

The NI SCXI-1337 terminal block provides connections to the NI SCXI-1129 in the 2-wire dual 8×16 matrix topology. The following figure represents the NI SCXI-1129 in the 2-wire dual 8×16 matrix topology.

Making a Connection

The SCXI-1129 in this topology contains two banks of 8×16 matrices. You can only connect rows and columns to rows and columns in the same bank.

For example, you can connect b1r1 to b1c0; however, you cannot connect b1r1 directly to b2c1 in this topology. When connecting the signal for b1r1, connect your lead to B1R1H and B1R1L in the terminal block. When connecting the signal for b1c0, connect your lead to B1C0H and B1C0L in the terminal block.

Notice 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 bank 1 row 1 to bank 1 column 1, call the niSwitch Connect Channels VI or the niSwitch_Connect function with the channel 1 parameter set to b1r1 and the channel 2 parameter set to b1c1.

When scanning the NI SCXI-1129, a typical scan list entry could be b1r1->b1c1;. This entry routes the signal connected to bank 1 row 1 to bank 1 column 1.

Bank Connection Diagram

Terminal Block Connections

The SCXI-1337 terminal block creates the following connections or relabels pins to operate the NI SCXI-1129 as a dual 2-wire 8×16 matrix. Refer to the pinout for pin locations.

Connection Pins
B1R4HB3R4H
B1R4LB3R4L
B1R5HB3R5H
B1R5LB3R5L
B1R6HB3R6H
B1R6LB3R6L
B1R7HB3R7H
B1R7LB3R7L
B2R4HB4R4H
B2R4LB4R4L
B2R5HB4R5H
B2R5LB4R5L
B2R6HB4R6H
B2R6LB4R6L
B2R7HB4R7H
B2R7LB4R7L
B1C0HB1C0+ to B3C0+
B1C0LB1C0- to B3C0-
B1C1HB1C1+ to B3C1+
B1C1LB1C1- to B3C1-
B1C2HB1C2+ to B3C2+
B1C2LB1C2- to B3C2-
B1C3HB1C3+ to B3C3+
B1C3LB1C3- to B3C3-
B1C4HB1C4+ to B3C4+
B1C4LB1C4- to B3C4-
B1C5HB1C5+ to B3C5+
B1C5LB1C5- to B3C5-
B1C6HB1C6+ to B3C6+
B1C6LB1C6- to B3C6-
B1C7HB1C7+ to B3C7+
B1C7LB1C7- to B3C7-
B1C8HB1C8+ to B3C8+
B1C8LB1C8- to B3C8-
B1C9HB1C9+ to B3C9+
B1C9LB1C9- to B3C9-
B1C10HB1C10+ to B3C10+
B1C10LB1C10- to B3C10-
B1C11HB1C11+ to B3C11+
B1C11LB1C11- to B3C11-
B1C12HB1C12+ to B3C12+
B1C12LB1C12- to B3C12-
B1C13HB1C13+ to B3C13+
B1C13LB1C13- to B3C13-
B1C14HB1C14+ to B3C14+
B1C14LB1C14- to B3C14-
B1C15HB1C15+ to B3C15+
B1C15LB1C15- to B3C15-
B2C0HB2C0+ to B4C0+
B2C0LB2C0- to B4C0-
B2C1HB2C1+ to B4C1+
B2C1LB2C1- to B4C1-
B2C2HB2C2+ to B4C2+
B2C2LB2C2- to B4C2-
B2C3HB2C3+ to B4C3+
B2C3LB2C3- to B4C3-
B2C4HB2C4+ to B4C4+
B2C4LB2C4- to B4C4-
B2C5HB2C5+ to B4C5+
B2C5LB2C5- to B4C5-
B2C6HB2C6+ to B4C6+
B2C6LB2C6- to B4C6-
B2C7HB2C7+ to B4C7+
B2C7LB2C7- to B4C7-
B2C8HB2C8+ to B4C8+
B2C8LB2C8- to B4C8-
B2C9HB2C9+ to B4C9+
B2C9LB2C9- to B4C9-
B2C10HB2C10+ to B4C10+
B2C10LB2C10- to B4C10-
B2C11HB2C11+ to B4C11+
B2C11LB2C11- to B4C11-
B2C12HB2C12+ to B4C12+
B2C12LB2C12- to B4C12-
B2C13HB2C13+ to B4C13+
B2C13LB2C13- to B4C13-
B2C14HB2C14+ to B4C14+
B2C14LB2C14- to B4C14-
B2C15HB2C15+ to B4C15+
B2C15LB2C15- to B4C15-

Pinout

The following figure identifies the pins for the NI SCXI-1129.