NI SCXI-1379 User manual

INSTALLATION INSTRUCTIONS
NI SCXI -1379
Terminal Block for the NI SCXI-1130
This guide describes how to install and connect signals to the
National Instruments SCXI-1379 terminal block to configure the
SCXI-1130 as an 8x32, 1-wire matrix.
The SCXI-1379 terminal block, which installs in front of the SCXI-1130
switch module, uses screw terminals to connect signals and the trigger
input and trigger output signals to the switch.
Refer to the NI Switches Getting Started Guide to determine when to install
the terminal block.
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 tip, which alerts you to advisory information.
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 and information on hardware labels.
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NI SCXI-1379 Installation Instructions 2 ni.com
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
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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 that you have the following items:
❑SCXI-1379 terminal block
❑SCXI chassis
❑SCXI-1130 switch module
❑1/8 in. flathead screwdriver
❑Phillips screwdriver
❑Wire cutter
❑Wire insulation stripper

©National Instruments Corporation 3 NI SCXI-1379 Installation Instructions
❑Matrix expansion cable (to expand the columns of a matrix)
❑Matrix expansion plug (to expand the rows of a matrix)
Tip NI recommends using 28 AWG wire (ribbon or discrete) for use with the SCXI-1379
terminal block.
3. Connect Signals
To connect signals to the terminal block, refer to Figures 1 and 2 while
completing the following steps:
1. Prepare the signal wire by stripping the insulation no more than 7 mm.
2. Remove the top cover screw.
3. Unsnap and remove the top cover.
4. Loosen the two strain-relief screws on the strain-relief assembly.
5. Run the signal wires through the strain-relief opening.
6. Insert the stripped end of the wire fully into the terminal. Secure the
wire by tightening the screw of the terminal. No bare wire should
extend past the screw terminal. Exposed wire increases the risk of
a short-circuit induced failure.
Note When connecting signals to the SCXI-1379, refer to Table 1 to determine where to
connect signals for the 8x32, 1-wire matrix topology.
7. Tighten the two screws on the strain-relief assembly to secure the
cables.
8. Reinstall the top cover.
9. Replace the top cover screw.

NI SCXI-1379 Installation Instructions 4 ni.com
Figure 1. SCXI-1379 Terminal Block
1 Terminal Block Top Cover
2 Signal Wires
3 Safety Ground Lug
4 Screw Terminals
5 Column Connector
6 Rear Connectors
7 Top Cover Screw
8 Thumbscrew
9 Column Connector
10 Strain-Relief Screw
11 Strain-Relief Bar
12 Strain-Relief Opening
13 Row Connector
1
7
5
4
3
12
11
10
9
8
6
13
2

©National Instruments Corporation 5 NI SCXI-1379 Installation Instructions
Figure 2. SCXI-1379 Terminal Block Signal Connections
USE SHIELDED CABLE
5V MAX
TRIGOUT
GND
TRIGIN
GND
NI SCXI-1379
Terminal Reference Guide
COLUMN
1-Wire
128 POSITION ROW EXPANSION CONNECTOR
176 POSITION CONNECTOR 176 POSITION CONNECTOR
128 POSITION ROW EXPANSION CONNECTOR
COLUMN
0
C0
1
C1
2
C2
3
C3
4
C4
5
C5
6
C6
7
C7
8
C8
9
C9
10
C10
11
C11
12
C12
13
C13
14
C14
15
C15
32
C16
33
C17
34
C18
35
C19
36
C20
37
C21
38
C22
39
C23
40
C24
41
C25
42
C26
43
C27
44
C28
45
C29
46
C30
47
C31
1-Wire
0
R01-Wire
ROW
1
R1
2
R2
3
R3
4
R4
5
R5
6
R6
7
R7
COLUMN
EXPANSION
CONNECTOR
COLUMN
EXPANSION
CONNECTOR
8 X 32 1-Wire Matrix

NI SCXI-1379 Installation Instructions 6 ni.com
Table 1. 8x32, 1-Wire Matrix Topology Mapping
Software Hardware Software Hardware Software Hardware
r0 ROW 0 c6 COLUMN 6 c19 COLUMN 35
r1 ROW 1 c7 COLUMN 7 c20 COLUMN 36
r2 ROW 2 c8 COLUMN 8 c21 COLUMN 37
r3 ROW 3 c9 COLUMN 9 c22 COLUMN 38
r4 ROW 4 c10 COLUMN 10 c23 COLUMN 39
r5 ROW 5 c11 COLUMN 11 c24 COLUMN 40
r6 ROW 6 c12 COLUMN 12 c25 COLUMN 41
r7 ROW 7 c13 COLUMN 13 c26 COLUMN 42
c0 COLUMN 0 c14 COLUMN 14 c27 COLUMN 43
c1 COLUMN 1 c15 COLUMN 15 c28 COLUMN 44
c2 COLUMN 2 c16 COLUMN 32 c29 COLUMN 45
c3 COLUMN 3 c17 COLUMN 33 c30 COLUMN 46
c4 COLUMN 4 c18 COLUMN 34 c31 COLUMN 47
c5 COLUMN 5

©National Instruments Corporation 7 NI SCXI-1379 Installation Instructions
4. Expanding Rows & Columns
The SCXI-1379 terminal block offers convenient methods for expanding
the rows and/or columns of a matrix using two or more SCXI-1379
terminal blocks. If you are not expanding the rows or columns of the
matrix, skip to the Install the Terminal Block section. For more information
about expanding matrices, refer to the NI Switches Help.
Row Expansion
Figure 3 shows how to expand the rows of a 4x32 matrix using a matrix
expansion plug. The matrix expansion plug connects columns to expand
the rows. To expand the rows of a matrix, complete the following steps:
1. Connect two SCXI-1379 terminal blocks to the front connectors of the
two adjacent SCXI-1130 modules.
2. Tighten the top and bottom chassis screws on the back of the terminal
block rear panels to hold them securely in place.
3. Connect a matrix expansion plug to the top or bottom column
connectors of the two SCXI-1379 terminal blocks.
Figure 3. Row Expansion with the SCXI-1379
1 Matrix Expansion Plug
2 Thumbscrews
3 Column Connector
4
32
4
32
8
32
3
1
2
3
Module 1
Matrix
Expansion
Plug
Module 2

NI SCXI-1379 Installation Instructions 8 ni.com
Column Expansion
Figure 4 shows how to expand the columns of a 4x32 matrix using a matrix
expansion cable. The matrix expansion cable connects rows to expand the
columns. To expand the columns of a matrix, complete the following steps:
1. Connect one end of the matrix expansion cable to one of the ROW
CONNECTION CABLE terminals in one of the SCXI-1379 terminal
blocks.
2. Connect the other end of the matrix expansion cable to one of the ROW
CONNECTION CABLE TERMINALS in another SCXI-1379.
3. Connect the two SCXI-1379 terminal blocks to the front connectors of
the two SCXI-1130 modules.
4. Tighten the top and bottom chassis screws on the back of the terminal
block rear panels to hold them securely in place.
Figure 4. Column Expansion with the SCXI-1379
1 SCXI-1379
2 Matrix Expansion Cable
3 ROW CONNECTION CABLE Terminals
4
32
4
32
4
64
32
1
Module 1 Matrix
Expansion
Cable
Module 2

©National Instruments Corporation 9 NI SCXI-1379 Installation Instructions
5. Install the Terminal Block
To connect the SCXI-1379 terminal block to the SCXI-1130 front panel,
refer to Figure 5 and complete the following steps (the SCXI-1130 should
already be installed in an SCXI chassis):
1. Plug the SCXI-1379 onto the front connectors of the SCXI-1130.
2. Tighten the top and bottom thumbscrews on the back of the terminal
block rear panel to hold it securely in place.
Figure 5. Installing the SCXI-1379 Terminal Block
1 Thumbscrew
2 Front Connectors
3 SCXI-1130
4 SCXI-1379
4
1
3
2

NI SCXI-1379 Installation Instructions 10 ni.com
Compliance and Certifications
Safety
This product is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement, control,
and laboratory use:
• IEC 61010-1, EN 61010-1
• UL 3111-1, UL 61010B-1
• CAN/CSA C22.2 No. 1010.1
Note For UL and other safety certifications, refer to the product label, or visit
ni.com/certification, search by model number or product line, and click the
appropriate link in the Certification column.
Electromagnetic Compatibility
Emissions................................................EN 55011 Class A at 10 m
FCC Part 15A above 1 GHz
Immunity ................................................EN 61326:1997 + A2:2001,
Table 1
EMC/EMI ...............................................CE, C-Tick, and FCC Part 15
(Class A) Compliant
Note For EMC compliance, you must operate this device with shielded cabling.
CE Compliance
This product meets the essential requirements of applicable European
Directives, as amended for CE marking, as follows:
Low-Voltage Directive (safety)..............73/23/EEC
Electromagnetic Compatibility
Directive (EMC) .....................................89/336/EEC
Note Refer to the Declaration of Conformity (DoC) for this product for any additional
regulatory compliance information. To obtain the DoC for this product, visit
ni.com/certification, search by model number or product line, and click the
appropriate link in the Certification column.

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