INSTALLATION GUIDE
SCXI™-1300/1301 T
This guide describes how to install and use the SCXI-1300 and SCXI-1301
terminal block with your SCXI module.
Introduction
The following sections describe the SCXI-1300/1301 terminal blocks and
their associated screw terminals.
SCXI-1300
Using the SCXI-1300 terminal block with 32-channel SCXI modules, you
can conveniently connect signals through screw terminals. Your terminal
block has the following features:
• Seventy-two screw terminals
• A cold-junction temperature sensor
• Thirty-two pairs of screw terminals that connect to the 32 differential
inputs of the SCXI module
• Two screw terminals that connect to the module functional chassis
ground pins
• A solder lug available as a safety chassis ground
• Additional screw terminals connect to the SCXI module OUTPUT,
the SCXI module AOREF, and to the SCXIbus GUARD
ERMINALBLOCK
SCXI-1301
Using the SCXI-1301 terminal block, which has 20 screw terminals, you
can conveniently connect signals to the SCXI-1140 module. Your terminal
block has the following features:
• Eight pairs of screw terminals connect to the eight differential inputs
of the SCXI-1140 module
• Two screw terminals that connect to the AGND of the module
• Additional screw terminals that connect to the HOLD signal and
functional chassis ground
LabVIEW™, National Instruments™, ni.com™, and SCXI™ are trademarks of National Instruments Corporation. Product and company names mentioned
herein are trademarks or trade names of their respective companies.
322715A-01
©
Copyright 2000 National Instruments Corp. All rights reserved. May 2000
What You Need to Get Started
To set up and use your SCXI-1300/1301 terminal block, you need the
following items:
❑ SCXI-1300 or SCXI-1301 terminal block
❑ SCXI-1300/1301 Terminal Block Installation Guide
❑ SCXI chassis
❑ SCXI module
❑ Your SCXI module user manual
❑ Number 1 and 2 Phillips-head screwdrivers
❑ 1/8 in. flathead screwdriver
❑ Long-nose pliers
❑ Wire cutter
❑ Wire insulation stripper
SCXI-1300/1301 Terminal Block 2 www.ni.com
Connecting Signal Wires to the Terminal Block
Connect signal wires to the terminal block using the following procedure,
referring to Figures 1, 2, and 3 as necessary:
1. Unscrew the top cover screws and remove the top cover.
2. Loosen the strain-relief screws and remove the strain-relief bar.
2
1
Back View Front View
1 Strain-Relief Bar
2 Strain-Relief Screws
4
3 Earth-Ground
Solder Lug
3
Figure 1.
6
5
4 Mating Connector
5 Thumbscrew
SCXI-1300/1301 Parts Locator Diagram
6 Top Cover Screws
7 Top Cover
7
3. Run the signal wires through the strain-relief opening. You can add
insulation or padding if necessary.
4. Prepare your signal wire by stripping the insulation to no more
than 7 mm.
5. Connect the signal wires to the screw terminals by inserting the
stripped end of the wire fully into the terminals and tighten the
screws with a flathead screwdriver. Tighten the screws to a torque
of 5 to 7 in.-lb.
Caution
Uninsulated wire extending past the screw terminal increases the risk of short
circuiting adjacent signals, causing the circuit to fail.
© National Instruments Corporation 3 SCXI-1300/1301 Terminal Block
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