National Instruments VXI-TB-196, VXI-TB-296 Installation Manual

VXI-TB-196/296 TERMINAL BLOCK

This guide describes how to connect signals and install the
VXI-TB-196 and VXI-TB-296 (196/296) terminal blocks with your
VXI-MIO and VXI-DIO modules.

Introduction

The VXI-TB-196/296 terminal block has a shielded board with either
96 or 192 screw terminals for connection to the VXI-MIO and
VXI-DIO front panel connectors, respectively. The VXI-TB-196/296
can easily accommodate thermocouples, RTDs, strain gauges,
thermistors, millivolt sources, volt sources, and current-loop receivers.

What You Need to Get Started

You need the following to set up and use your VXI-TB-196/296
terminal block:

❏ One or more of the following terminal blocks:

VXI-TB-196
VXI-TB-296

❏ VXI-TB-196/296 Terminal Block Installation Guide ❏ VXIbus chassis ❏ One or more VXI-DAQ module(s) and documentation ❏ Phillips-head number 1 and number 2 screwdrivers ❏ 0.09 in. flathead screwdriver ❏ Long-nose pliers ❏ Wire cutter ❏ Wire insulation stripper

National Instruments and The Software is the Instrument are trademarks of National Instruments Corporation. Product and company
names are trademarks or trade names of their respective companies.

321349A-01 © Copyright 1996 National Instruments Corp. All rights reserved. September 1996

Signal Connection

Perform the following steps to connect the signals to the terminal
block. The called-out numbers refer to items in Figure 1.

1. To access the screw terminals (9), remove the terminal block
cover (5) by loosening the three cover screws (6) with a Phillips­head number 1 screwdriver. These screws stay attached to the
cover without falling out.

2. Choose the wire opening (Figure 2) through which your signal
wires will pass and loosen the appropriate strain-relief bar screws
(11) with a Phillips-head number 2 screwdriver. You can
completely remove the strain-relief bar (12) for easier access.

3. Use a wire cutter and wire insulation stripper to strip the wire
ends as necessary to connect them to screw terminals.

4. Loosen the screws in the screw terminals (9) with a 0.09 in.
flathead screwdriver.

5. To connect the wires to the screw terminals, insert the stripped
wires into the screw terminals. Tighten the screws with a 0.09 in.
flathead screwdriver.

6. Replace the strain-relief bar, if necessary, and tighten the strain­relief bar screws.

Note: If the strain-relief bar screws protrude past the bottom of the terminal

block, replace the screws with 6-32 Phillips panhead screws that are
shorter than 3/4 in.

7. Replace the terminal block cover and tighten the cover screws.

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