NI PXI-2529 2-Wire 4×32 Matrix Topology

The NI TB-2634 or the NI TB-2636 terminal block creates a 2-wire 4×32 matrix topology with the NI PXI-2529. The following figure represents the NI PXI-2529 in the 2-wire 4×32 matrix topology.

Making a Connection

The NI PXI-2529 combined with the NI TB-2634 or the NI TB-2636 creates a 4×32 matrix. In this topology, you can connect any row to any column. When connecting signals to r1, you would connect them to R1+ and R1– in the terminal block. When connecting signals to c0, you would connect them to C0+ and C0– in the terminal block.

You can connect the channels of the NI PXI-2529 using the niSwitch Connect Channels VI or the niSwitch_Connect function. For example, to connect row 1 to 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 PXI-2529 in 4×32 matrix topology, a typical scan list entry could be r1->c20;. This entry routes the signal connected to row 1 to column 20.

Bank Connection Diagram

Terminal Block Connections

The NI TB-2634 terminal block creates the following connections or relabels pins to operate the NI PXI-2529 as a 2-wire 4×32 matrix topology. Refer to the following pinout for pin locations.

The following table lists the pins of the NI TB-2634 shorts and the column connection created.

Connection	Pins	Connection	Pins	Connection	Pins	Connection	Pins
C0+	B24	C8+	B19	C16+	B14	C24+	B9
C0-	A24	C8-	A19	C16-	A14	C24-	A9
C1+	B23	C9+	B18	C17+	B13	C25+	B8
C1-	A23	C9-	A18	C17-	A13	C25-	A8
C2+	B22	C10+	B17	C18+	B12	C26+	B7
C2-	A22	C10-	A17	C18-	A12	C26-	A7
C3+	B21	C11+	B16	C19+	B11	C27+	B6
C3+	A21	C11-	A16	C19-	A11	C27-	A6
C4+	C24	C12+	C19	C20+	C14	C28+	C9
C4-	D24	C12-	D19	C20-	D14	C28-	D9
C5+	C23	C13+	C18	C21+	C13	C29+	C8
C5-	D23	C13-	D18	C21-	D13	C29-	D8
C6+	C22	C14+	C17	C22+	C12	C30+	C7
C6-	D22	C14-	D17	C22-	D12	C30-	D7
C7+	C21	C15+	C16	C23+	C11	C31+	C6
C7-	D21	C15-	D16	C23-	D11	C32-	D6

The following table lists the pins of the NI TB-2634 shorts and the row connection created.

Connection	Pins	Connection	Pins	Connection	Pins	Connection	Pins
R0+	B25,B15	R1+	C25,C15	R2+	B20,B10	R3+	C20,C10
R0-	A25,A15	R1-	D25,D15	R2-	A20,A10	R3-	D20,D10

Pinout

The following figure identifies the pins for the NI PXI-2529.