NI PXI-2532 1-Wire 4×128 Matrix Topology

NI Switches

NI PXI-2532 1-Wire 4×128 Matrix Topology

The NI TB-2640 terminal block creates a 1-wire 4×128 matrix topology with the NI PXI-2532. The following figure represents the NI PXI-2532 in the 1-wire 4×128 matrix topology.

Making a Connection

Both the scanning command, r2->c1;, and the immediate operation, niSwitch Connect Channels VI or the niSwitch_Connect function with parameters r2 and c1, result in the following connection:

signal connected to R2 is routed to C1

Terminal Block Connections

The NI TB-2640 terminal block connects banks of the NI PXI-2532 to create the 1-wire 4×128 matrix topology. The following figure illustrates how the native banks of the NI PXI-2532 connect using the NI TB-2640 to create the 1-wire 4×128 matrix topology.

Bank Connection Diagram

The following tables list the pin assignments for the NI TB-2640 upper and lower column connection boards.

Upper Column Connection Board Column Pin Assignment

Pin Number Column Pin Number Column Pin Number Column Pin Number Column
J3 Pin 1 C127 J3 Pin 9 C119 J3 Pin 17 C111 J3 Pin 25 C103
J3 Pin 2 C126 J3 Pin 10 C118 J3 Pin 18 C110 J3 Pin 26 C102
J3 Pin 3 C125 J3 Pin 11 C117 J3 Pin 19 C109 J3 Pin 27 C101
J3 Pin 4 C124 J3 Pin 12 C116 J3 Pin 20 C108 J3 Pin 28 C100
J3 Pin 5 C123 J3 Pin 13 C115 J3 Pin 21 C107 J3 Pin 29 C99
J3 Pin 6 C122 J3 Pin 14 C114 J3 Pin 22 C106 J3 Pin 30 C98
J3 Pin 7 C121 J3 Pin 15 C113 J3 Pin 23 C105 J3 Pin 31 C97
J3 Pin 8 C120 J3 Pin 16 C112 J3 Pin 24 C104 J3 Pin 32 C96
Pin Number Column Pin Number Column Pin Number Column Pin Number Column
J2 Pin 1 C95 J2 Pin 9 C87 J2 Pin 17 C79 J2 Pin 25 C71
J2 Pin 2 C94 J2 Pin 10 C86 J2 Pin 18 C78 J2 Pin 26 C70
J2 Pin 3 C93 J2 Pin 11 C85 J2 Pin 19 C77 J2 Pin 27 C69
J2 Pin 4 C92 J2 Pin 12 C84 J2 Pin 20 C76 J2 Pin 28 C68
J2 Pin 5 C91 J2 Pin 13 C83 J2 Pin 21 C75 J2 Pin 29 C67
J2 Pin 6 C90 J2 Pin 14 C82 J2 Pin 22 C74 J2 Pin 30 C66
J2 Pin 7 C89 J2 Pin 15 C81 J2 Pin 23 C73 J2 Pin 31 C65
J2 Pin 8 C88 J2 Pin 16 C80 J2 Pin 24 C72 J2 Pin 32 C64

Lower Column Connection Board Column Pin Assignment

Pin Number Column Pin Number Column Pin Number Column Pin Number Column
J3 Pin 1 C0 J3 Pin 9 C8 J3 Pin 17 C16 J3 Pin 25 C24
J3 Pin 2 C1 J3 Pin 10 C9 J3 Pin 18 C17 J3 Pin 26 C25
J3 Pin 3 C2 J3 Pin 11 C10 J3 Pin 19 C18 J3 Pin 27 C26
J3 Pin 4 C3 J3 Pin 12 C11 J3 Pin 20 C19 J3 Pin 28 C27
J3 Pin 5 C4 J3 Pin 13 C12 J3 Pin 21 C20 J3 Pin 29 C28
J3 Pin 6 C5 J3 Pin 14 C13 J3 Pin 22 C21 J3 Pin 30 C29
J3 Pin 7 C6 J3 Pin 15 C14 J3 Pin 23 C22 J3 Pin 31 C30
J3 Pin 8 C7 J3 Pin 16 C15 J3 Pin 24 C23 J3 Pin 32 C31
Pin Number Column Pin Number Column Pin Number Column Pin Number Column
J2 Pin 1 C32 J2 Pin 9 C40 J2 Pin 17 C48 J2 Pin 25 C56
J2 Pin 2 C33 J2 Pin 10 C41 J2 Pin 18 C49 J2 Pin 26 C57
J2 Pin 3 C34 J2 Pin 11 C42 J2 Pin 19 C50 J2 Pin 27 C58
J2 Pin 4 C35 J2 Pin 12 C43 J2 Pin 20 C51 J2 Pin 28 C59
J2 Pin 5 C36 J2 Pin 13 C44 J2 Pin 21 C52 J2 Pin 29 C60
J2 Pin 6 C37 J2 Pin 14 C45 J2 Pin 22 C53 J2 Pin 30 C61
J2 Pin 7 C38 J2 Pin 15 C46 J2 Pin 23 C54 J2 Pin 31 C62
J2 Pin 8 C39 J2 Pin 16 C47 J2 Pin 24 C55 J2 Pin 32 C63

Row Pin Connections

The NI TB-2640 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.

Pin Number Row
1 RO
2 R1
3 R2
4 R3
5–16

Row Protection Bypass Header

The row ribbon cable headers are isolated from the reed relays through 100 Ω resistors. To bypass these resistors, install a jumper in the appropriate position of J5 on the switch module interface board. The following table lists possible jumper locations.

Pin Connected Bypassed Row
1–2 R0
5–6 R1
9–10 R2
13–14 R3

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.