NI PXI-2529 2-Wire 8×16 Matrix Topology

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NI PXI-2529 2-Wire 8×16 Matrix Topology

The TB-2635 terminal block creates a 2-wire 8×16 matrix topology with the NI PXI-2529. The following figure represents the NI PXI-2529 in the 2-wire 8×16 matrix topology.

Making a Connection

The NI PXI-2529 combined with the NI TB-2635 creates an 8×16 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 8×16 matrix topology, a typical scan list entry could be r5->c1;. This entry routes the signal connected to row 5 to column 1.

Bank Connection Diagram

Terminal Block Connections

The NI TB-2635 terminal block creates the following connections or relabels pins to operate the NI PXI-2529 as a 2-wire 8×16 matrix. Refer to the Pinout below for pin locations.

The following table lists the pins the NI TB-2635 terminal block shorts and the column connections created. If you do not use the NI TB-2635 terminal block, the pins can be shorted externally.

ConnectionPinsConnectionPinsConnectionPinsConnectionPins
C0+B24, B14C4+C24,C14C8+B19,B9C12+C19,C9
C0-A24,A14C4-D24,D14C8-A19,A9C12-D19,D9
C1+B23,B13C5+C23,C13C9+B18,B8C13+C18,C8
C1-A23,A13C5-D23,D13C9-A18,A8C13-D18,D8
C2+B22,B12C6+C22,C12C10+B17,B7C14+C17,C7
C2-A22,A12C6-D22,D12C10-A17,A7C14-D17,D7
C3+B21,B11C7+C21,C11C11+B16,B6C15+C16,C6
C3-A21,A11C7-D21,D11C11-A16,A6C15-D16,D6

The following table lists the pins and their associated row connection.

ConnectionPinsConnectionPinsConnectionPinsConnectionPins
R0+B25R2+B20R4+B15R6+B10
R0-A25R2-A20R4-A15R6-A10
R1+C25R3+C20R5+C15R7+C10
R1-D25R3-D20R5-D15R7-D10

Pinout

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