NI PXI/PXIe-2532/2532B 1-Wire Dual 4×64 Matrix Topology

The NI TB-2643 terminal block creates a 1-wire dual 4×64 matrix topology with the NI PXI/PXIe-2532 (NI 2532). The NI TB-2643B terminal block creates a 1-wire dual 4×64 matrix topology with the NI PXI/PXIe-2532B (NI 2532B). The following figure represents the NI 2532/2532B in the 1-wire dual 4×64 matrix topology.

Making a Connection

For bank 0, both the scanning command, b0r2->b0c1;, and the immediate operation, niSwitch Connect Channels VI or the niSwitch_Connect function with parameters b0r2 and b0c1, result in the following connection:

signal connected to B0R2 is routed to B0C1

For bank 1, both the scanning command, b1r2->b1c1;, and the immediate operation, niSwitch Connect Channels VI or the niSwitch_Connect function with parameters b1r2 and b1c1, result in the following connection:

signal connected to B1R2 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-2643 terminal block connects banks of the NI 2532 to create the 1-wire dual 4×64 matrix topology. The NI TB-2643B terminal block connects banks of the NI 2532B to create the 1-wire dual 4×64 matrix topology. The following figure illustrates how the native banks of the NI 2532/2532B connect using the NI TB-2643/2643B to create the 1-wire dual 4×64 matrix topology.

Bank Connection Diagram

The following tables list the pin assignments for the NI TB-2643/2643B column ribbon cable headers.

Column Pin Connections

The following table refers to the J3 connector on the upper column connection board of the NI TB-2643 and the J13 connector on the NI TB-2643B.

Pin Number	Column	Pin Number	Column	Pin Number	Column	Pin Number	Column
Pin 1	B1C63	Pin 9	B1C59	Pin 17	B1C55	Pin 25	B1C51
Pin 2	B0C63	Pin 10	B0C59	Pin 18	B0C55	Pin 26	B0C51
Pin 3	B1C62	Pin 11	B1C58	Pin 19	B1C54	Pin 27	B1C50
Pin 4	B0C62	Pin 12	B0C58	Pin 20	B0C54	Pin 28	B0C50
Pin 5	B1C61	Pin 13	B1C57	Pin 21	B1C53	Pin 29	B1C49
Pin 6	B0C61	Pin 14	B0C57	Pin 22	B0C53	Pin 30	B0C49
Pin 7	B1C60	Pin 15	B1C56	Pin 23	B1C52	Pin 31	B1C48
Pin 8	B0C60	Pin 16	B0C56	Pin 24	B0C52	Pin 32	B0C48

The following table refers to the J2 connector on the upper column connection board of the NI TB-2643 and the J12 connector on the NI TB-2643B.

Pin Number	Column	Pin Number	Column	Pin Number	Column	Pin Number	Column
Pin 1	B1C47	Pin 9	B1C43	Pin 17	B1C39	Pin 25	B1C35
Pin 2	B0C47	Pin 10	B0C43	Pin 18	B0C39	Pin 26	B0C35
Pin 3	B1C46	Pin 11	B1C42	Pin 19	B1C38	Pin 27	B1C34
Pin 4	B0C46	Pin 12	B0C42	Pin 20	B0C38	Pin 28	B0C34
Pin 5	B1C45	Pin 13	B1C41	Pin 21	B1C37	Pin 29	B1C33
Pin 6	B0C45	Pin 14	B0C41	Pin 22	B0C37	Pin 30	B0C33
Pin 7	B1C44	Pin 15	B1C40	Pin 23	B1C36	Pin 31	B1C32
Pin 8	B0C44	Pin 16	B0C40	Pin 24	B0C36	Pin 32	B0C32

The following table refers to the J3 connector on the lower column connection board of the NI TB-2643 and the J3 connector on the NI TB-2643B.

Pin Number	Column	Pin Number	Column	Pin Number	Column	Pin Number	Column
Pin 1	B0C0	Pin 9	B0C4	Pin 17	B0C8	Pin 25	B0C12
Pin 2	B1C0	Pin 10	B1C4	Pin 18	B1C8	Pin 26	B1C12
Pin 3	B0C1	Pin 11	B0C5	Pin 19	B0C9	Pin 27	B0C13
Pin 4	B1C1	Pin 12	B1C5	Pin 20	B1C9	Pin 28	B1C13
Pin 5	B0C2	Pin 13	B0C6	Pin 21	B0C10	Pin 29	B0C14
Pin 6	B1C2	Pin 14	B1C6	Pin 22	B1C10	Pin 30	B1C14
Pin 7	B0C3	Pin 15	B0C7	Pin 23	B0C11	Pin 31	B0C15
Pin 8	B1C3	Pin 16	B1C7	Pin 24	B1C11	Pin 32	B1C15

The following table refers to the J2 connector on the lower column connection board of the NI TB-2643 and the J2 connector on the NI TB-2643B.

Pin Number	Column	Pin Number	Column	Pin Number	Column	Pin Number	Column
Pin 1	B0C16	Pin 9	B0C20	Pin 17	B0C24	Pin 25	B0C28
Pin 2	B1C16	Pin 10	B1C20	Pin 18	B1C24	Pin 26	B1C28
Pin 3	B0C17	Pin 11	B0C21	Pin 19	B0C25	Pin 27	B0C29
Pin 4	B1C17	Pin 12	B1C21	Pin 20	B1C25	Pin 28	B1C29
Pin 5	B0C18	Pin 13	B0C22	Pin 21	B0C26	Pin 29	B0C30
Pin 6	B1C18	Pin 14	B1C22	Pin 22	B1C26	Pin 30	B1C30
Pin 7	B0C19	Pin 15	B0C23	Pin 23	B0C27	Pin 31	B0C31
Pin 8	B1C19	Pin 16	B1C23	Pin 24	B1C27	Pin 32	B1C31

Row Pin Connections

The NI TB-2643 and NI TB-2643B provide 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.

Pin Number	Row
1	B0R0
2	B1R0
3	B0R1
4	B1R1
5	B0R2
6	B1R2
7	B0R3
8	B1R3
9–16	—

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.

Bypassed Row	NI TB-2643 Module Interface Board		NI TB-2643B
	Header	Pins Connected	Header	Pins Connected
B0R0	J5	1-2	J14	1-2
B1R0	J5	3-4	J14	3-4
B0R1	J5	5-6	J14	5-6
B1R1	J5	7-8	J14	7-8
B0R2	J5	9-10	J14	9-10
B1R2	J5	11-12	J14	11-12
B0R3	J5	13-14	J14	13-14
B1R3	J5	15-16	J14	15-16

Pinout

The following figure identifies the pins for the NI 2532.

Caution  Do not connect to RESERVED pins. Keep low-voltage pins isolated from row and column channels when high voltage is present.

The following figure identifies the pins for the NI 2532B.

Caution  Do not connect to RESERVED pins.