National Instruments SCXI-1384K User manual

ASSEMBLY AND INSTALLATION GUIDE
SCXI -1384K Custom Terminal
Block Kit
This guide describes how to assemble your custom terminal block, make
signal connections, and install your custom terminal block.
Introduction
The SCXI-1384K custom terminal block installs in front of the SCXI-1129
module. This terminal block allows you to easily turn the SCXI-1129
module into a high-density matrix configuration designed to meet your
needs.
You can use the SCXI-1384K custom terminal block with the SCXI-1129
module to create a custom matrix without any extra wiring except for
connecting your signals to the rows and columns of the matrix. You can also
combine the rows and/or columns to create many different matrix
configurations. Refer to Chapter 2, Using the SCXI-1129, in the SCXI-1129
User Manual for more information.
The SCXI-1384K custom terminal block has solder terminals that provide
access to each of the four 4 ×16 matrixes. Also, connections for scanner
advanced and external trigger signals are available.
Note Common matrix terminology describes matrixes by the number of rows by the
number of columns they contain. For example, four rows by 16 columns would be written
as 4 × 16.
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SCXI-1384K Custom Terminal Block Kit 2 ni.com
Conventions
The following conventions are used in this guide:
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.
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.
Getting Started
To assemble and use your SCXI-1384K custom terminal block, you need
the following items:
❑SCXI-1384K custom terminal block kit
– Front panel
– Rear panel
–Base
– Two pieces of insulator foam tape
– Insulator
– Safety ground lug
– Upper strain-relief bar
– Lower strain-relief bar
– Snap-on top cover
– Printed circuit board (PCB)
– 180-position mating connector
– Two thumbscrews
– Five #6 sheet metal screws
– Two 10-32 × 3/4 inch machine screws
– Two 4-40 ×3/8 inch machine screws
– Two 4-40 nuts with nylon inserts
– Front graphical overlay

©National Instruments Corporation 3 SCXI-1384K Custom Terminal Block Kit
❑This document
❑SCXI chassis
❑SCXI-1129 module
❑SCXI-1129 User Manual
❑Number 1 and 2 Phillips-head screwdrivers
❑1/8 inch slotted head screwdriver
❑Long-nose pliers
❑1/4 inch hex driver or wrench
❑Wire cutter
❑Wire insulation stripper
❑Soldering iron
❑Solder
Safety Information
The following cautions contain important safety information concerning
hazardous voltages.
Caution Do not operate the device in an explosive atmosphere or where there may be
flammable gases or fumes.
Keep away from live circuits. Do not remove equipment covers or shields unless you are
trained to do so. If signal wires are connected to the device, hazardous voltages can exist
even when the equipment is turned off. To avoid a shock hazard, do not perform procedures
involving cover or shield removal unless you are qualified to do so and disconnect all field
power prior to removing covers or shields.
Equipment described in this document must be used in an Installation Category I1
environment according to IEC 60664-1. This category requires local level supply
mains-connected installation.
Do not operate damaged equipment. The safety protection features built into this device
can become impaired if the device becomes damaged in any way. If the device is damaged,
power off the device and do not use it until service-trained personnel can check its safety.
1 Category I refers to a signal level such as voltages of an isolation transformer secondary on a PWB.

SCXI-1384K Custom Terminal Block Kit 4 ni.com
If necessary, return the device to National Instruments for service and repair to ensure that
its safety is not compromised.
Do not operate this equipment in a manner that contradicts the information specified in this
document. Misuse of this equipment could result in a shock hazard.
Do not substitute parts or modify equipment. Because of the danger of introducing
additional hazards, do not install unauthorized parts or modify the device. Return the
device to NI for service and repair to ensure that its safety features are not compromised.
You must insulate all of your signal connections to the highest voltage with which the
SCXI-1384K custom terminal block can come in contact.
When using the device with high common-mode voltages, you must insulate your signal
wires for the highest input voltage. NI is not liable for any damages or injuries resulting
from inadequate signal wire insulation. Use only 26-20 AWG wire with a minimum
voltage rating of 150 V and a temperature value of 60 °C for measuring up to 150 V.
When connecting or disconnecting signal lines to the SCXI circuit board, make sure the
lines are powered off. Potential differences between the lines and the SCXI ground can
create a shock hazard while you connect the lines.
Connections, including power signals to ground and vice versa, that exceed any of the
maximum signal ratings on the SCXI device can create a shock or fire hazard, or can
damage any or all of the boards connected to the SCXI chassis, the host computer, and the
SCXI device. NI is not liable for any damages or injuries resulting from incorrect signal
connections.
If hazardous voltages (≥30 Vrms and 42.4 Vpeak or 60 VDC) are present, you must connect
a safety earth-ground wire to the cable safety-ground lug, shown in Figure 6. This complies
with safety agency requirements and protects against electric shock when the cable is not
connected to the chassis. To connect the safety earth-ground to the safety-ground lug, run
an earth-ground wire from the signal source to the cable. NI is not liable for any damages
or injuries resulting from inadequate safety earth-ground connections.
Do not loosen or re-orient the safety-ground lug hardware when connecting the
safety-ground wire; to do so reduces the safety isolation between the high voltage and
safety ground.
Clean the module and accessories by brushing off light dust with a soft non-metallic brush.
Remove other contaminants with a stiff non-metallic brush. The unit must be completely
dry and free from contaminants before returning it to service. The terminal block must be
used with a UL-listed SCXI chassis.

©National Instruments Corporation 5 SCXI-1384K Custom Terminal Block Kit
Unpacking
Remove the package contents and inspect the terminal block for missing
components or for any signs of damage. Notify NI if any of the components
appear damaged in any way. Do not install a damaged terminal block onto
your system.
Assembling Your Custom Terminal Block
To assemble your custom terminal block, complete the following sections.
Assembling the Strain-Relief
To assemble the strain-relief, complete the following:
1. Adhere insulator foam tape to the upper and lower strain-relief bars as
shown in Figure 1.
2. Use two 10-32 ×3/4 inch screws to loosely combine the upper
strain-relief bar to the lower strain-relief bar leaving enough space for
your signal connections.
Figure 1. Strain-Relief Parts Locator Diagram
1 10-32 ×3/4 Inch Screws
2 Upper Strain-Relief Bar
3 Insulator Foam Tape
4 Lower Strain-Relief Bar
1
4
2
3

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Assembling the Front Panel
To assemble the front panel, complete the following steps:
1. Install the safety ground lug and strain-relief assembly to the front
panel using two 4-40 × 3/8 inch screws as shown in Figure 2.
2. Secure the strain-relief assembly to the front panel with two 4-40 nuts.
Figure 2. Connecting the Strain-Relief Assembly and Front Panel
1 Strain-Relief Assembly
2 4-40 ×3/8 Inch Screws
3 Safety Ground Lug
4 4-40 Nuts
5 Front Panel
1
34
2
5

©National Instruments Corporation 7 SCXI-1384K Custom Terminal Block Kit
Installing the Front Panel
To install the front panel, complete the following steps:
1. Adhere insulator to the base as shown in Figure 3.
2. Attach front panel assembly to base using two #6 sheet metal screws
as shown in Figure 3.
3. Adhere front graphical overlay to front panel as shown in Figure 3.
Figure 3. Installing the Front Panel Assembly
1 Front Graphical Overlay
2 Front Panel Assembly
3 #6 Sheet Metal Screws
4Base
5 Insulator
1
4
3
5
2

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Attaching the Mating Connector
To attach the mating connector, complete the following steps:
1. Orient the180-position connector as shown in Figure 4.
2. Attach the 180-position connector to the side of the PCB with the
solder terminals.
3. Solder each pin of the180-position connector to the PCB.
Figure 4. Attaching the Mating Connector
1PCB 2 180-Position Connector
2
1

©National Instruments Corporation 9 SCXI-1384K Custom Terminal Block Kit
Connecting Signals
Note Refer to the Safety Information section before connecting or disconnecting any
signal wires.
1. Prepare your signal wire by stripping the insulation no more than 3/16
of an inch.
2. Pull your signal wires at least one foot through the strain-relief opening
on the front panel assembly as shown in Figure 5.
Figure 5. SCXI-1384K Custom Terminal Block Final Assembly
1 Signal Wires
2Base
3 Extrusion Rails
4 180-Position Connector
5PCB
6 Thumbscrews
7 #6 Sheet Metal Screws
8 Rear Panel
9 Snap-On Top Cover
2
1
9
8
3
3
5
6
7
4

SCXI-1384K Custom Terminal Block Kit 10 ni.com
3. Connect the safety earth ground to the safety ground lug. Refer to the
Safety Information section for connection information.
4. Connect the wires to the terminals by soldering the stripped end of the
wire onto the terminal. Trim all soldered connections to a 1/16 inch
maximum on the back side of the PCB. When connecting your signals,
refer to the labeling in Figure 6.
Figure 6. SCXI-1384K Custom Terminal Block Signal Connections
1 Row Connection Solder Terminals
2 Strain-Relief Bar Assembly
3 Safety Ground Lug
4 5 V Reference
5 Ground Reference for Trigger Signal Solder Terminals
6 Scanner Advanced Output (SCANADV) Solder Terminal
7 External Trigger Input (EXTRIGIN) Solder Terminal
8 Column Connection Solder Terminals
2
7
6
5
3
1
8
4

©National Instruments Corporation 11 SCXI-1384K Custom Terminal Block Kit
Completing the Custom Terminal Block
Refer to Figure 5 while following these steps:
1. Slide the PCB into the extrusion rails of the base, pulling excess signal
wire back through the strain-relief assembly.
2. Install two thumbscrews into rear panel.
3. Attach the rear panel to the base with two sheet metal screws.
4. Tighten the strain-relief bar assembly.
5. Snap the top cover onto the base.
6. Secure the top cover to the rear panel with one sheet metal screw.
Installing The Terminal Block
To connect your SCXI-1384K custom terminal block to the SCXI-1129
module front connector, complete the following steps:
1. Connect the module front connector to its mating connector on the
terminal block.
2. Tighten the top and bottom thumbscrews on the back of the terminal
block rear panel to hold it securely in place.
Figure 7. Installing the SCXI-1384K Custom Terminal Block
1 SCXI-1129
2 Thumbscrews
3 SCXI-1384K Custom Terminal Block
4 Signal Wires
3
2
1
SCXI POWER
SCXI RESET
SCXI
ON
4

SCXI-1384K Custom Terminal Block Kit 12 ni.com
Specifications
All specifications are typical at 25 °C unless otherwise specified.
Maximum Voltage
Terminal to earth ....................................150 Vrms or VDC
Terminal to terminal ...............................150 Vrms or VDC
Environment
Operating temperature ............................0 to 50 °C
Storage temperature................................–20 to 70 °C
Relative humidity ...................................10 to 90%
Safety
Designed in accordance with IEC61010-1, EN 61010-1, UL 3111-1, and
CAN/CSA C22.2 No. 1010.1 for electrical measuring and test equipment
For use at altitudes up to 2000 m
Indoor use only
Installation Category I
Pollution Degree 2
Emissions and Immunity
EMC/EMI ...............................................CE, C-Tick and FCC Part 15
(Class A) Complaint
Electrical emissions ................................EN 55011 Class A at 10 m;
FCC Part 15A above 1 GHz
Electrical immunity ................................Evaluated to EN 61326:1998,
Table 1
Note For full EMC and EMI compliance, you must operate this device with shielded
cabling. See the Declaration of Conformity (DoC) for this product for any additional
regulatory compliance information. To obtain the DoC for this product, click
Declaration of Conformity at ni.com/certification. This website lists the DoCs by
product family. Select the appropriate product family, followed by your product, and a link

©National Instruments Corporation 13 SCXI-1384K Custom Terminal Block Kit
to the DoC (in Adobe Acrobat format) appears. Click the Acrobat icon to download or read
the DoC.
Technical Support Resources
NI Web Support
NI Web support is your first stop for help in solving installation,
configuration, and application problems and questions. Online
problem-solving and diagnostic resources include frequently asked
questions, knowledge bases, product-specific troubleshooting wizards,
manuals, drivers, software updates, and more. Web support is available
through the Technical Support section of ni.com
Worldwide Support
NI has offices located around the world to help address your support needs.
You can access our branch office Web sites from the Worldwide Offices
section of ni.com. Branch office Web sites provide up-to-date contact
information, support phone numbers, e-mail addresses, and current events.
If you have searched the technical support resources on our Web site
and still cannot find the answers you need, contact your local office or NI
corporate. For telephone support in the United States, dial 512 795 8248.
For telephone support outside the United States, contact your local branch
office:
Australia 1800 300 800, Austria 43 662 457990-0,
Belgium 32 (0) 2 757 0020, Brazil 55 11 3262 3599,
Canada 800 433 3488, China 86 21 5050 9800,
Czech Republic 420 224 235 774, Denmark 45 45 76 26 00,
Finland 358 (0) 9 725 72511, France 01 57 66 24 24,
Germany 49 89 7413130, India 91 80 41190000, Israel 972 3 6393737,
Italy 39 02 41309277, Japan 0120-527196, Korea 82 02 3451 3400,
Lebanon 961 (0) 1 33 28 28, Malaysia 1800 887710,
Mexico 01 800 010 0793, Netherlands 31 (0) 348 433 466,
New Zealand 0800 553 322, Norway 47 (0) 66 90 76 60,
Poland 48 22 3390150, Portugal 351 210 311 210, Russia 7 495 783 6851,
Singapore 1800 226 5886, Slovenia 386 3 425 42 00,
South Africa 27 0 11 805 8197, Spain 34 91 640 0085,
Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151,
Taiwan 886 02 2377 2222, Thailand 662 278 6777,
Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545

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