NI PXI/PXIe-2532/2532B 1-Wire Dual 16×16 Matrix Topology

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Edition Date: April 2015

Part Number: 375472H-01

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The NI TB-2645 terminal block creates a 1-wire dual 16×16 matrix topology with the NI PXI/PXIe-2532 (NI 2532). The NI TB-2645B terminal block creates a 1-wire dual 16×16 matrix topology with the NI PXI/PXIe-2532B (NI 2532B).The following figure represents the NI 2532/2532B in the 1-wire dual 16×16 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-2645 terminal block connects the banks of the NI 2532 to create the 1-wire dual 16×16 matrix topology. The NI TB-2645B terminal block connects the banks of the NI 2532B to create the 1-wire dual 16×16 matrix topology. The following figure illustrates how the native banks on the NI 2532/2532B connect using the NI TB-2645/2645B to create the 1-wire dual 16×16 matrix topology.

Bank Connection Diagram

The following table lists the pin assignments for the NI TB-2645/2645B column ribbon cable headers.

Column Pin Connections

The following table refers to the J3 connector on the NI TB-2645 column connection board and the J3 connector on the NI TB-2645B.

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
Note  The column connection board J2 connector on the NI TB-2645 is not used in this configuration.

Row Pin Connections

The NI TB-2645/2645B requires two row ribbon cables for row connections. The NI TB-2645 provides one pair of ribbon cable headers to connect your application. The NI TB-2645B provides two pairs of ribbon cable headers. Use one cable header pair to connect to your application and the other for column expansion.

The following tables list the pin assignments for row connection.

The following table refers to the J2 connector on the NI TB-2645 Module Interface Board and the J4 and J5 connectors on the NI TB-2645B.

Pin Number Row
Pin 1 B0R0
Pin 2 B1R0
Pin 3 B0R1
Pin 4 B1R1
Pin 5 B0R2
Pin 6 B1R2
Pin 7 B0R3
Pin 8 B1R3
Pin 9 B0R4
Pin 10 B1R4
Pin 11 B0R5
Pin 12 B1R5
Pin 13 B0R6
Pin 14 B1R6
Pin 15 B0R7
Pin 16 B1R7


The following table refers to the J3 connector on the NI TB-2645 Module Interface Board and the J6 and J7 connectors on the NI TB-2645B.

Pin Number Row
Pin 1 B0R8
Pin 2 B1R8
Pin 3 B0R9
Pin 4 B1R9
Pin 5 B0R10
Pin 6 B1R10
Pin 7 B0R11
Pin 8 B1R11
Pin 9 B0R12
Pin 10 B1R12
Pin 11 B0R13
Pin 12 B1R13
Pin 13 B0R14
Pin 14 B1R14
Pin 15 B0R15
Pin 16 B1R15

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-2645 Module Interface Board NI TB-2645B
Header Pins Connected Header Pins Connected
B0R0 N/A N/A J14 1-2
B1R0 N/A N/A J14 3-4
B0R1 N/A N/A J14 5-6
B1R1 N/A N/A J14 7-8
B0R2 N/A N/A J14 9-10
B1R2 N/A N/A J14 11-12
B0R3 N/A N/A J14 13-14
B1R3 N/A N/A J14 15-16
B0R4 N/A N/A J15 1-2
B1R4 N/A N/A J15 3-4
B0R5 N/A N/A J15 5-6
B1R5 N/A N/A J15 7-8
B0R6 N/A N/A J15 9-10
B1R6 N/A N/A J15 11-12
B0R7 N/A N/A J15 13-14
B1R7 N/A N/A J15 15-16
B0R8 N/A N/A J16 1-2
B1R8 N/A N/A J16 3-4
B0R9 N/A N/A J16 5-6
B1R9 N/A N/A J16 7-8
B0R10 N/A N/A J16 9-10
B1R10 N/A N/A J16 11-12
B0R11 N/A N/A J16 13-14
B1R11 N/A N/A J16 15-16
B0R12 N/A N/A J17 1-2
B1R12 N/A N/A J17 3-4
B0R13 N/A N/A J17 5-6
B1R13 N/A N/A J17 7-8
B0R14 N/A N/A J17 9-10
B1R14 N/A N/A J17 11-12
B0R15 N/A N/A J17 13-14
B1R15 N/A N/A J17 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.

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