2-Wire 16×16 Matrix

Software name: 2532/2-Wire 16x16 Matrix (NISWITCH_TOPOLOGY_2532_2_WIRE_16X16_MATRIX)

Hardware Diagram

The NI TB-2645B terminal block creates a 2-Wire 16×16 matrix topology with the module.

Making a Connection

For bank 0, both the scanning command, r6->c1;, and the immediate operation, niSwitch Connect Channels VI or the niSwitch_Connect function with parameters r6 and c1, result in the following connection:

• signal connected to R6+ is routed to C1+
• signal connected to R6- is routed to C1-

Terminal Block Connections

The NI TB-2645B terminal block connects banks of the module to create the 2-Wire 16×16 matrix topology.

Column Pin Connections

The following table refers to the J3 connector on the NI TB-2645B.

Row Pin Connections

The NI TB-2645B 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.

The following table refers to the J4 and J5 connectors on the NI TB-2645B.

The following table refers to the J6 and J7 connectors on the NI TB-2645B.

Row Protection Bypass Header

Each row signal is isolated from the reed relays through a 100 Ω resistor. To bypass this resistor, install a jumper on the appropriate pins of the header indicated in the table below. The following table lists the appropriate jumper position for bypassing the resistor on each row signal.