NI PXI-2532 1-Wire Dual 8×32 Matrix Topology

The NI TB-2644 terminal block creates a 1-wire dual 8×32 matrix topology with the NI PXI-2532. The following figure represents the NI PXI-2532 in the 1-wire dual 8×32 matrix topology.

Making a Connection

For bank 0, both the scanning command, b0r1->b0c1;, and the immediate operation, niSwitch Connect Channels VI or the niSwitch_Connect function with parameters b0r1 and b0c1, result in the following connection:

signal connected to B0R1 is routed to B0C1

For bank 1, both the scanning command, b1r1->b1c1;, and the immediate operation, niSwitch Connect Channels VI or the niSwitch_Connect function with parameters b1r1 and b1c1, result in the following connection:

signal connected to B1R1 is routed to B1C1

Note  While you can, for example, connect B0R1 to B0C0, you cannot connect B0R1 directly to B1C1 in this topology.

Terminal Block Connections

The NI TB-2644 terminal block connects the banks of the NI PXI-2532 to create the 1-wire dual 8×32 matrix topology. The following figure illustrates how the native banks on the NI PXI-2532 connect using the NI TB-2644 to create the 1-wire dual 8×32 matrix topology.

Bank Connection Diagram

The following tables list the pin assignments for the NI TB-2644 column connection board.

Column Connection Board Column Pin Assignment

Row Pin Connections

The NI TB-2644 provides two ribbon cable headers for row connection. Use one cable header to connect to your application. Use the other cable header for column expansion.

The following table lists the pin assignments for row connection.

Pinout

The following figure identifies the pins for the NI PXI-2532.

Caution  Low-voltage pins are reserved for future use. These pins should remain disconnected and isolated from row and column channels when high voltage is present.