National Instruments NI TB-2631 User Manual
INSTALLATION INSTRUCTIONS
NI TB-2631
Terminal Block for the NI PXI-2530
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This guide describes how to install and connect signals to the
National Instruments TB-2631 terminal block to configure the PXI-2530
as a:
• 4x32 1-wire matrix
• 4x16 2-wire matrix
Refer to the NI Switches Getting Started Guide to determine when to install
the terminal block.
Introduction
The TB-2631 terminal block installs in front of the PXI-2530 switch
module. The TB-2631 has screw terminals to connect signals to the switch.
Screw terminals for the trigger input and trigger output signals also are
available.
Conventions
The following conventions are used in this guide:
» The » symbol leads you through nested menu items and dialog box options
to a final action. The sequence File»Page Setup»Options directs you to
pull down the File menu, select the Page Setup item, and select Options
from the last dialog box.
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to
avoid injury, data loss, or a system crash.
bold Bold text denotes items that you must select or click in the software, such
as menu items and dialog box options. Bold text also denotes parameter
names.
italic Italic text denotes variables, emphasis, a cross reference, or an introduction
to a key concept. This font also denotes text that is a placeholder for a word
or value that you must supply.
monospace Text in this font denotes text or characters that you should enter from the
keyboard, sections of code, programming examples, and syntax examples.
This font is also used for the proper names of disk drives, paths, directories,
programs, subprograms, subroutines, device names, functions, operations,
variables, filenames and extensions, and code excerpts.
1. Unpack the Terminal Block
To avoid damage when you handle the terminal block, take the following
precautions:
Caution Never touch the exposed pins of connectors.
• Ground yourself using a grounding strap or by touching a grounded
object.
• Touch the antistatic package to a metal part of the chassis before you
remove the terminal block from the package.
Remove the terminal block from the package and inspect the terminal block
for loose components or any sign of damage. Notify NI if the terminal
block appears damaged in any way. Do not install a damaged terminal
block on a switch module.
Store the terminal block in the antistatic package when not in use.
2. Verify the Components
Make sure you have the following:
❑ TB-2631 terminal block
❑ PXI chassis
❑ PXI-2530 switch module
❑ 1/8 inch flathead screwdriver
NI TB-2631 Installation Instructions 2 ni.com
3. Connect Signals
To connect signals to the terminal block, complete the following steps:
1. Remove the terminal block top cover screws with a flathead
screwdriver.
2. Gently lift the terminal block top cover off the terminal block.
3. Loosen the two screws on the strain-relief bar, leaving plenty of space
for the signal cables.
4. Prepare the signal cable by stripping the insulation no more than 3/16
of an inch.
5. Pull the signal cables through the strain-relief opening shown in
Figure 1.
6. Connect the cables to the terminals by inserting the stripped end of the
cable into the terminal. Secure the connection by tightening the screw
for each terminal. When connecting the signals, refer to the connection
diagram in Figure 2.
Note When connecting signals to the TB-2631, refer to Tables 1 and 2 to determine where
to connect signals for the chosen topology.
7. Tighten the two screws on the strain-relief bar, securing the signal
cables.
8. Replace the terminal block top cover to the terminal block.
9. Secure the terminal block top cover with the top cover screws.
© National Instruments Corporation 3 NI TB-2631 Installation Instructions
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