National Instruments 1128, SCXI-1127 User Manual
™
SCXI
SCXI-1127/1128 User Manual
SCXI-1127/1128 User Manual
December 2000 Edition
Part Number 322149B-01
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Important Information
Warranty
The SCXI-1127 and SCXI-1128 are warranted against defects in materials and workmanship for a period of one year from the date
of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment
that proves to be defective during the warranty period. This warranty includes parts and labor.
The media on which you receive National Instruments software are warranted not to fail to execute programming instructions,
due to defects in materials and workmanship, for a period of 90 days from date of shipment, as evidenced by receipts or other
documentation. National Instruments will, at its option, repair or replace software media that do not execute programming
instructions if National Instruments receives notice of such defects during the warranty period. National Instruments does not
warrant that the operation of the software shall be uninterrupted or error free.
A Return Material Authorization (RMA) number must be obtained from the factory and clearly marked on the outside of
the package before any equipment will be accepted for warranty work. National Instruments will pay the shipping costs of
returning to the owner parts which are covered by warranty.
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Compliance
FCC/Canada Radio Frequency Interference Compliance*
Determining FCC Class
The Federal Communications Commission (FCC) has rules to protect wireless communications from interference.
The FCC places digital electronics into two classes. These classes are known as Class A (for use in industrialcommercial locations only) or Class B (for use in residential or commercial locations). Depending on where it is
operated, this product could be subject to restrictions in the FCC rules. (In Canada, the Department of
Communications (DOC), of Industry Canada, regulates wireless interference in much the same way.)
Digital electronics emit weak signals during normal operation that can affect radio, television, or other wireless
products. By examining the product you purchased, you can determine the FCC Class and therefore which of the two
FCC/DOC Warnings apply in the following sections. (Some products may not be labeled at all for FCC; if so, the
reader should then assume these are Class A devices.)
FCC Class A products only display a simple warning statement of one paragraph in length regarding interference and
undesired operation. Most of our products are FCC Class A. The FCC rules have restrictions regarding the locations
where FCC Class A products can be operated.
FCC Class B products display either a FCC ID code, starting with the letters EXN,
or the FCC Class B compliance mark that appears as shown here on the right.
Consult the FCC web site
http://www.fcc.gov
FCC/DOC Warnings
This equipment generates and uses radio frequency energy and, if not installed and used in strict accordance with the
instructions in this manual and the CE Mark Declaration of Conformity**, may cause interference to radio and
television reception. Classification requirements are the same for the Federal Communications Commission (FCC)
and the Canadian Department of Communications (DOC).
Changes or modifications not expressly approved by National Instruments could void the user’s authority to operate
the equipment under the FCC Rules.
Class A
Federal Communications Commission
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own expense.
for more information.
Canadian Department of Communications
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du
Canada.
Class B
Federal Communications Commission
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Canadian Department of Communications
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du
Canada.
European Union - Compliance to EEC Directives
Readers in the EU/EEC/EEA must refer to the Manufacturer's Declaration of Conformity (DoC) for information**
pertaining to the CE Mark compliance scheme. The Manufacturer includes a DoC for most every hardware product
except for those bought for OEMs, if also available from an original manufacturer that also markets in the EU, or
where compliance is not required as for electrically benign apparatus or cables.
* Certain exemptions may apply in the USA, see FCC Rules §15.103 Exempted devices, and §15.105(c).
Also available in sections of CFR 47.
** The CE Mark Declaration of Conformity will contain important supplementary information and instructions
for the user or installer.
Conventions
The following conventions are used in this manual:
<> Angle brackets that contain numbers separated by an ellipsis represent a
range of values associated with a bit or signal name—for example,
DBIO<3..0>.
» 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 on 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.
Contents
Chapter 1
Installing and Configuring the SCXI-1127/1128
Installing the Software ................................................................................................... 1-2
Installing the Hardware..................................................................................................1-3
Installing the SCXI-1127/1128 Module into the SCXI Chassis......................1-4
Connecting the SCXI-1127/1128 to the DMM in a Single-Chassis System...1-5
Single 4-Slot Chassis Configuration .................................................1-6
Single 12-Slot Chassis Configuration ...............................................1-8
Connecting the SCXI-1127/1128 to the DMM in a Multichassis System ......1-10
4-Slot and 4-Slot Multichassis Configuration...................................1-10
4-Slot and 12-Slot Multichassis Configuration.................................1-12
12-Slot and 12-Slot Multichassis Configuration...............................1-14
Connecting the SCXI-1127/1128 to the DMM in a PXI-1010 Chassis ..........1-16
DMM in PXI Slots 1 through 7 Configuration .................................1-16
DMM in PXI Slot 8 Configuration ...................................................1-17
Connecting the SCXI-1127/1128 to the DMM in the PXI-1011 Chassis .......1-17
DMM in PXI Slots 1 through 3 Configuration .................................1-18
DMM in PXI Slot 4 Configuration ...................................................1-18
Accessing the SCXI-1127/1128 through Other SCXI Modules Using
a DAQ Device .............................................................................................. 1-18
Using a DAQ Device on a PXI-1010 Chassis .................................................1-20
Using a DAQ Device on a PXI-1011 Chassis .................................................1-20
Connecting the SCXI-1127/1128 to an External DMM..................................1-20
Configuring and Self-Test .............................................................................................1-22
Auto-Detecting Modules .................................................................................1-22
Manually Adding Modules..............................................................................1-23
Safety Information ......................................................................................................... 1-24
Chapter 2
Using the SCXI-1127/1128
Operating as a Multiplexer/Scanner ..............................................................................2-1
2-Wire Channel Scanning Configuration ........................................................2-3
1-Wire Channel Scanning Configuration ........................................................2-5
4-Wire Channel Scanning Configuration ........................................................2-6
4-Wire versus 2-Wire Resistance Measurement .............................................2-9
Mixed Mode Configuration.............................................................................2-10
Hardware-Timed and Software Scanning .......................................................2-11
Hardware-Timed Scanning ...............................................................2-12
© National Instruments Corporation vii SCXI-1127/1128 User Manual
Contents
Making Temperature Measurements .............................................................. 2-17
Operating as a Matrix .................................................................................................... 2-20
32 × 1 Matrix Configuration ........................................................................... 2-20
4 × 8 Matrix Configuration ............................................................................. 2-21
Matrix Expansion............................................................................................ 2-24
Independent Mode ......................................................................................................... 2-29
Appendix A
Specifications
Appendix B
Accessories
Hardware-Timed Scanning Using a DMM ........................ 2-14
Hardware-Timed Scanning Using External Instruments ... 2-14
Synchronous Scanning ....................................................... 2-14
Handshaking Scanning....................................................... 2-15
Software Scanning............................................................................ 2-17
Making Thermocouple Measurements ............................................. 2-17
Making RTD Measurements ............................................................ 2-19
Making Thermistor Measurements................................................... 2-19
Appendix C
Customizing Your Module
Appendix D
SCXI-1127/1128 Front Connector
Appendix E
Common Questions
Appendix F
Technical Support Resources
SCXI-1127/1128 User Manual viii ni.com
Glossary
Index
Figures
Figure 1-1. Installing the SCXI-1127/1128 into an SCXI Chassis ..........................1-4
Figure 1-2. 4-Slot Single-Chassis Installation .........................................................1-6
Figure 1-3. 4-Slot Configuration Parts Locator Diagram ........................................1-7
Figure 1-4. 12-Slot Single-Chassis Installation .......................................................1-8
Figure 1-5. 12-Slot Configuration Parts Locator Diagram ...................................... 1-9
Figure 1-6. 4-Slot to 4-Slot Multichassis Configuration Parts Locator
Figure 1-7. 4-Slot to 12-Slot Multichassis Configuration Parts Locator
Figure 1-8. 12-Slot to 12-Slot Multichassis Configuration Parts Locator
Figure 1-9. Installing the SCXI-1127/1128 with Two DAQ Devices .....................1-19
Figure 2-1. SCXI-1331 Signal Connections ............................................................2-2
Figure 2-2. 2-Wire Block Diagram ..........................................................................2-3
Figure 2-3. 2-Wire Wiring Diagram ........................................................................2-4
Figure 2-4. 1-Wire Block Diagram ..........................................................................2-5
Figure 2-5. 1-Wire Wiring Diagram ........................................................................2-6
Figure 2-6. 4-Wire Block Diagram ..........................................................................2-7
Figure 2-7. 4-Wire Wiring Diagram ........................................................................2-8
Figure 2-8. Signal Connections for a 2-Wire Resistance Measurement ..................2-9
Figure 2-9. Signal Connections for a 4-Wire Resistance Measurement ..................2-10
Figure 2-10. Mixed Mode Scanning with an SCXI-1331 ..........................................2-11
Figure 2-11. Hardware Scanning Flowchart ..............................................................2-13
Figure 2-12. Cabling a DMM and Using the TRIG0 to Bus
Figure 2-13. Cabling an External DMM .................................................................... 2-15
Figure 2-14. Daisy-Chained for Handshaking ...........................................................2-16
Figure 2-15. Connecting an External DMM to an SCXI-1127/1128
Figure 2-16. Temperature Measurement Wiring Diagram ........................................2-18
Figure 2-17. 2 × 4, 1-Wire Matrix Configuration ...................................................... 2-20
Figure 2-18. 1 × 32 Matrix Wiring Diagram.............................................................. 2-21
Figure 2-19. SCXI-1332 Terminal Block ..................................................................2-22
Figure 2-20. SCXI-1332 Connected to an SCXI-1127 ..............................................2-23
Figure 2-21. SCXI-1332 Connected to an SCXI-1127/1128 Schematic ...................2-24
Figure 2-22. 8 × 8 Matrix Parts Locator Diagram .....................................................2-25
Figure 2-23. 8 × 8 Matrix Schematic ......................................................................... 2-26
Contents
Diagram .................................................................................................1-11
Diagram .................................................................................................1-13
Diagram .................................................................................................1-15
the VMC/EXT_TRIG_IN to Non-Cabled Modules ..............................2-14
in an SCXI-2000 Series Chassis............................................................2-16
© National Instruments Corporation ix SCXI-1127/1128 User Manual
Contents
Tables
Figure 2-24. 8 × 16 Matrix Parts Locator Diagram ................................................... 2-27
Figure 2-25. 8 × 16 Matrix Schematic....................................................................... 2-28
Figure 2-26. SCXI-1127/1128 Relay Configuration ................................................. 2-30
Figure C-1. Removing the SCXI Module Cover...................................................... C-1
Figure C-2. Bent and Trimmed Resistor .................................................................. C-2
Figure D-1. SCXI-1127/1128 Front Connector Pin Assignments
for 2-Wire Mode ................................................................................... D-2
Figure D-2. SCXI-1127/1128 Front Connector Pin Assignments
for 1-Wire Mode ................................................................................... D-3
Figure D-3. SCXI-1127/1128 Front Connector Pin Assignments
for 4-Wire Mode ................................................................................... D-4
Figure D-4. SCXI-1127/1128 Front Connector Pin Assignments to Create
an 4 × 8 Matrix...................................................................................... D-5
Table 1-1. SCXI-1127/1128 Configurations .......................................................... 1-1
Table D-1. Front Connector Signal Description ..................................................... D-6
SCXI-1127/1128 User Manual x ni.com
Installing and Configuring the
SCXI-1127/1128
The SCXI-1127 and SCXI-1228 modules are high-voltage
multiplexer/matrix modules. The SCXI-1127 is a high-density armature
relay module. The SCXI-1128 is a high-density solid-state relay module.
Both modules provide a 1 × 32, 2-wire multiplexer and several switch
matrix configurations on an SCXI platform. The SCXI-1127/1128 can also
operate as two 1 × 16 or four 1 × 8, 2-wire multiplexers (in independent
mode) allowing a single module to handle several multiplexing needs.
Through software-configurable switches, the module can also operate as a
1-wire 1 × 64 multiplexer, enabling you to make a large number of common
referenced measurements. It can also operate as a 1 × 64, 4-wire
multiplexer to make resistive measurements such as those needed for
thermistors and RTDs. With the use of special terminal blocks, the
SCXI-1127/1128 can become a 4 × 8 or 1 × 32, 2-wire matrix. A complete
list of possible configurations is given in Table 1-1.
1
Table 1-1.
Scanning
Configuration
1-wire 1 × 64 N/A
2-wire 1 × 32 4 × 8 (also 2 × 16, 1 × 32)
4-wire 1 × 16 N/A
To handle large channel counts, you can expand the size of the multiplexer
with additional SCXI-1127/1128 modules. These modules support the
analog bus through a special adapter, the high-voltage analog bus (HVAB)
backplane adapter in the SCXI-1357/1358 kit, at the rear of the module.
This adapter allows you to expand the HVAB without complicated wiring.
For example, you can connect two SCXI-1127/1128 modules using the
HVAB-backplane adapter to create a 1 × 64, 2-wire multiplexer.
© National Instruments Corporation 1-1 SCXI-1127/1128 User Manual
SCXI-1127/1128 Configurations
Multiplexer Matrix
Chapter 1 Installing and Configuring the SCXI-1127/1128
In a matrix configuration, you can expand the columns of the matrix using
the HVAB-backplane adapter. For example, you can connect two
SCXI-1127/1128 modules via the HVAB-backplane adapter to create a
4 × 16 matrix. You can also expand the rows and columns of a matrix
through the front connector of the SCXI-1127/1128 using the SCXI-1332
and matrix expansion cables. Refer to Chapter 2, Matrix Expansion, for
further information on matrix expansion.
The SCXI-1127/1128 is designed to work well at both low and high
voltages. For low-voltage measurements such as those taken with
thermocouples, the SCXI-1127/1128 uses relays with very low thermal
offset to ensure accurate measurements. At high voltages, the SCXI-1127
can handle signals up to 250 V
load. The SCXI-1128 can handle signals up to 250 V
and 30 VDC at a 10 mA load. The SCXI-1127/1128 complies with the CE
low-voltage directive for an installation category II environment. Refer to
Appendix A, Specifications, for detailed specifications of the
SCXI-1127/1128.
The following section explains how to install the software required to
use the SCXI-1127/1128, including installing the latest version of
NI-SWITCH. After installing the software, install the SCXI-1127/1128
hardware and its accessories, then configure and test the SCXI-1127/1128.
at a 200 mA load and 30 VDC at a 1 A
rms
at a 0.8 mA load
rms
Installing the Software
You can control the SCXI-1127/1128 programmatically in an application
development environment (ADE) using NI-SWITCH. The supported
ADEs include LabVIEW, Measurement Studio, Visual Basic, and C or
C++ environments. To install software for the SCXI-1129, complete the
following:
1. Insert your NI-SWITCH software CD into your CD-ROM drive.
2. Click the Install NI-SWITCH option from the installation window
that appears automatically.
Note
If the installation window does not appear, double-click the My Computer icon on
your PC desktop. Find the CD drive, and double-click it. In the CD directory, double-click
install.exe
SCXI-1127/1128 User Manual 1-2 ni.com
.
Chapter 1 Installing and Configuring the SCXI-1127/1128
The NI-SWITCH and NI-DMM version 1.5 installation window offers
three choices:
• Install NI-DMM—Choose this selection if you want to install
only the software for the DMM.
• Install NI-SWITCH—Choose this selection if you want to install
only the software for the switches.
• Install NI-SWITCH and NI-DMM—Choose this selection if
you want to install the software for both the DMM and the
switches.
3. To install the instrument driver, VirtualBench, and application
development examples, choose Programmatic and Interactive
Support. To install only the instrument driver files for VirtualBench,
choose Interactive Support Only.
Note
The Interactive Support Only choice will not allow you to program the instrument
with any programming languages.
4. When installing NI-SWITCH, notice the Development
Environments panel.
• If you click the Advanced button on this panel, you can custom
install National Instruments drivers such as NI-DAQ, NI-IVI, and
NI-VISA.
• If you do not want to install certain drivers, click Advanced and
uncheck the driver(s) you do not want installed.
If a driver is already unchecked, your computer has the same driver or
a newer version of the driver already installed.
Note
If a newer version of a driver is present on your PC, the installer will not overwrite
the driver.
5. After completing the installation, turn off your computer.
Installing the Hardware
The following section describes how to install your SCXI-1127/1128 for
use with SCXI chassis, National Instruments DAQ devices, and National
Instruments DMMs.
© National Instruments Corporation 1-3 SCXI-1127/1128 User Manual
Chapter 1 Installing and Configuring the SCXI-1127/1128
Installing the SCXI-1127/1128 Module into the SCXI Chassis
You need the following items to complete the installation:
• SCXI-1127/1128
• SCXI chassis
• 1/8 in. flathead screwdriver
1
2
10
1 AB0+
2 AB0–
3 NI 4060 for PCI
4 AB2+
3
9
8
5AB2–
6 HV8-BAN4
7SH9MD-9MD
Figure 1-1.
7
6
8 2-Slot HVAB-Backplane Adapter
9 SCXI Chassis
10 SCXI-1127/1128 Module
Installing the SCXI-1127/1128 into an SCXI Chassis
4
5
Follow these steps to install your SCXI-1127/1128 module into the SCXI
chassis while referring to Figure 1-1.
1. Turn off the computer that contains the DAQ/DMM device or
disconnect it from your SCXI chassis.
2. Turn off the SCXI chassis. Do not insert the SCXI-1127/1128 module
into a chassis that is turned on.
3. Insert the SCXI-1127/1128 module into the rightmost slot. Gently
guide the module into the module guides and push it to the back of the
slot until the connectors make good contact. The module must be
firmly engaged; however do not force the module into place.
SCXI-1127/1128 User Manual 1-4 ni.com
Chapter 1 Installing and Configuring the SCXI-1127/1128
Note
When installing the SCXI-1127/1128 module in an SCXI chassis, the rightmost slot
(when the chassis is viewed from the front) must be filled first, then fill the slot to the left
with the next SCXI-1127/1128. Other SCXI modules can be loaded from left to right.
4. Insert any other SCXI modules into the remaining slots in the same
manner as described in step 3.
5. Secure all the SCXI-1127/1128 modules to the SCXI chassis using
both thumbscrews.
To finish installing your SCXI-1127/1128, follow one of the procedures in
the appropriate section that follows.
Connecting the SCXI-1127/1128 to the DMM in a Single-Chassis System
You need the following items for this installation:
• SCXI-1000/1000DC/1001 chassis with the SCXI-1127/1128 modules
installed
• SCXI-1357 (4-slot)/1358 (12-slot) kit
– 1-slot, 2-slot, and/or 8-slot HVAB-backplane adapter
– HV8-to-BAN4 cable
– SH9MD-9MD cable
– Two or three 8-position high-voltage plugs
• DMM
• 1/8 in. flathead screwdriver
Consult your SCXI chassis documentation and DMM documentation for
additional instructions and warnings. Your SCXI-1127/1128 modules and
any other SCXI modules should already be installed in the chassis
according to their installation instructions. Before you proceed with your
connections, make sure you turn off your SCXI chassis.
© National Instruments Corporation 1-5 SCXI-1127/1128 User Manual
Chapter 1 Installing and Configuring the SCXI-1127/1128
Single 4-Slot Chassis Configuration
Refer to Figures 1-2 and 1-3 to make connections in the single 4-slot
chassis configuration.
1
1 SCXI-1127/1128 Module
2 4-Slot SCXI Chassis
3 2-Slot HVAB-Backplane
Adapter
2
4 1-Slot HVAB-Backplane
Adapter
5 8-Position HVAB Plug
Figure 1-2.
5
4
3
6NI 4060 for PCI
7 SH9MD-9MD Cable
8 HV8-BAN4 Cable
4-Slot Single-Chassis Installation
6
7
8
SCXI-1127/1128 User Manual 1-6 ni.com
Chapter 1 Installing and Configuring the SCXI-1127/1128
2
1
7
1 2-Slot HVAB-Backplane
Adapter
2 8-Position HVAB Plug
3
4
3 1-Slot HVAB-Backplane
Adapter
4 HV8-BAN4 Cable
Figure 1-3.
4-Slot Configuration Parts Locator Diagram
6
AB0+
AB0–
AB2+
AB2–
5
5 NI 4060 for PCI
6 SH9MD-9MD Cable
7 4-Slot SCXI Chassis
1. Install the 2-slot HVAB-backplane adapter behind slots 3 and 4.
2. Install additional 1-slot HVAB-backplane adapters behind slots 1
and 2 if needed.
3. Install the 8-position HVAB plugs to connect the HVAB-backplane
adapters as needed.
4. Connect the HV8-BAN4 cable from the DMM to the HVAB connector
behind slot 4.
5. Connect the SH9MD-9MD cable from the DMM to the AUX IN
connector.
6. You can install any additional SCXI-1127/1128 modules in any slot
that has an HVAB-backplane adapter behind it.
Note
An SCXI-1127/1128 is required in slot 4 to establish communication with the
chassis. If slot 4 is empty, the system will not operate. It is this module that you must
specify in Measurement & Automation Explorer (MAX) as the module cabled to the
DMM.
© National Instruments Corporation 1-7 SCXI-1127/1128 User Manual
Chapter 1 Installing and Configuring the SCXI-1127/1128
Single 12-Slot Chassis Configuration
Refer to Figures 1-4 and 1-5 to make connections in the single 12-slot
chassis configuration.
1
1 SCXI-1127/1128 Module
2 12-Slot SCXI Chassis
3 2-Slot HVAB-Backplane
Adapter
2
9
4 1-Slot HVAB-Backplane
Adapter
5 8-Position HVAB Plug
6 NI 4060 for PCI
Figure 1-4.
12-Slot Single-Chassis Installation
3
4
5
6
7
8
7 SH9MD-9MD Cable
8 HV8-BAN4 Cable
9 8-Slot HVAB-Backplane Adapter
SCXI-1127/1128 User Manual 1-8 ni.com
1 32 4 5
8
Chapter 1 Installing and Configuring the SCXI-1127/1128
AB0+
AB0–
AB2+
AB2–
6
7
1 8-Slot HVAB-Backplane Adapter
2 HV8-BAN4 Cable
3 8-Position HVAB Plug
1. Install the 8-slot HVAB-backplane adapter behind slots 5 through 12.
2. Install additional 2-slot and 1-slot HVAB-backplane adapters behind
3. Install the 8-position HVAB plugs to connect the HVAB-backplane
4. Connect the HV8-BAN4 cable from the DMM to the HVAB connector
5. Connect the SH9MD-9MD cable from the DMM to the AUX IN
6. You can install any additional SCXI-1127 modules in any slot that has
Notes
Do not connect the SH9MD-9MD cable to the AUX IN connector behind slot 4 on
the 2-slot HVAB-backplane adapter.
An SCXI-1127/1128 is required in slot 12 to establish communications with the chassis.
If slot 12 is empty, the system will not operate. It is this module that you must specify in
MAX as the module cabled to the DMM.
4 2-Slot HVAB-Backplane Adapter
5 1-Slot HVAB-Backplane Adapter
6 NI 4060 for PCI
Figure 1-5.
12-Slot Configuration Parts Locator Diagram
slots 1 through 4 if needed.
adapters as needed.
behind slot 12.
connector behind slot 5.
an HVAB-backplane adapter behind it.
7 SH9MD-9MD Cable
8 12-Slot SCXI Chassis
© National Instruments Corporation 1-9 SCXI-1127/1128 User Manual
Chapter 1 Installing and Configuring the SCXI-1127/1128
Connecting the SCXI-1127/1128 to the DMM in a Multichassis System
The following sections describe how to configure the following
multichassis configurations:
• 4-slot and 4-slot multichassis configuration
• 4-slot and 12-slot multichassis configuration
• 12-slot and 12-slot multichassis configuration
You can also create larger configurations.
4-Slot and 4-Slot Multichassis Configuration
In addition to the items needed for a single-chassis system, you need the
following to install this configuration:
• SCXI-1357 multichassis expansion kit
– HV8-HV8 cable
– SH9MD-9MD cable
– Two 8-position HVAB plugs
– One 2-slot HVAB-backplane adapter
– Two 1-slot HVAB-backplane adapters
SCXI-1127/1128 User Manual 1-10 ni.com
Chapter 1 Installing and Configuring the SCXI-1127/1128
Refer to Figure 1-6 to set up this multichassis configuration.
1 2
10
9
8
3
4
AB0+
AB0–
AB2+
AB2–
5
6
7
1 2-Slot HVAB-Backplane Adapter
2 8-Position HVAB Plug
3 1-Slot HVAB-Backplane Adapter
4 HV8-BAN4 Cable
Figure 1-6.
5NI4060 for PCI
6 SH9MD-9MD Cable
7 4-Slot SCXI Chassis
8 SH9MD-9MD Cable
9 HV8-HV8 Cable
10 4-Slot SCXI Chassis
4-Slot to 4-Slot Multichassis Configuration Parts Locator Diagram
1. Install the HVAB-backplane adapters and 8-position HVAB plugs in
the next chassis as described in steps 1 through 3 in Single 4-Slot
Chassis Configuration.
© National Instruments Corporation 1-11 SCXI-1127/1128 User Manual
Chapter 1 Installing and Configuring the SCXI-1127/1128
2. Connect the HV8-HV8 cable from the first chassis, normally the
connector behind slot 1, to the HVAB connector (behind slot 4) of the
next chassis.
3. Connect the SH9MD-9MD cable from the AUX OUT connector of the
first chassis to the AUX IN connector of the next chassis.
4. Repeat steps 1 through 3 for each additional chassis.
Notes
An SCXI-1127/1128 is required in slot 4 to establish communications with the
chassis. If slot 4 is empty, the system will not operate. It is this module that you must
specify in MAX as the module cabled to the DMM.
If a chassis is configured with less than four slots of the HVAB-backplane adapter, use the
right-most available HVAB connector to extend to the next chassis. In this instance,
right-most means the slot closest to slot 1 when the chassis is viewed from the back.
4-Slot and 12-Slot Multichassis Configuration
In addition to the items needed for a single-chassis system, you need the
following items to install this configuration:
• SCXI-1358 multichassis expansion kit
– HV8-HV8 cable
– SH9MD-9MD cable
– Three 8-position HVAB plugs
– One 8-slot HVAB-backplane adapter
– One 2-slot HVAB-backplane adapter
– Two 1-slot HVAB-backplane adapters
SCXI-1127/1128 User Manual 1-12 ni.com
Chapter 1 Installing and Configuring the SCXI-1127/1128
Refer to Figure 1-7 to set up this multichassis configuration.
10
31 2
AB0+
AB0–
AB2+
AB2–
4
5
6
11
9
1 2-Slot HVAB-Backplane Adapter
2 1-Slot HVAB-Backplane Adapter
3 HV8-BAN4 Cable
4 NI 4060 for PCI
Figure 1-7.
8
5 SH9MD-9MD Cable
6 8-Position HVAB Plug
7 8-Slot HVAB-Backplane Adapter
8 12-Slot SCXI Chassis
4-Slot to 12-Slot Multichassis Configuration Parts Locator Diagram
7
9 SH9MD-9MD Cable
10 HV8-HV8 Cable
11 4-Slot SCXI Chassis
© National Instruments Corporation 1-13 SCXI-1127/1128 User Manual
Chapter 1 Installing and Configuring the SCXI-1127/1128
1. Install the HVAB-backplane adapters and jumper blocks in the 12-slot
chassis as described in steps 1 through 3 in Single 12-Slot Chassis
Configuration.
2. Connect the HV8-HV8 cable from the first chassis, normally the
connector behind slot 1, to the HVAB connector (behind slot 12) of the
next chassis.
3. Connect the SH9MD-9MD cable from the AUX OUT connector of the
first chassis to the AUX IN connector (behind slot 5) of the next
chassis.
4. Repeat steps 1 through 3 for each additional chassis.
Notes
Do not use the SH9MD-9MD cable behind slot 4 of the 2-slot HVAB-backplane
adapter on the 12-slot chassis.
An SCXI-1127/1128 is required in slot 4 of the 4-slot chassis and slot 12 of the 12-slot
chassis to establish communications with all the chassis in the system. If slot 4 is empty
in the 4-slot chassis or slot 12 is empty in the 12-slot chassis, the chassis will not operate.
It is this module that you must specify in MAX as the module cabled to the DMM.
If the 4-slot chassis is configured with less than four slots of the HVAB-backplane adapter,
use the right-most available HVAB connector to extend to the next chassis. In this instance,
right-most means the slot closest to slot 1 when the chassis is viewed from the back.
12-Slot and 12-Slot Multichassis Configuration
In addition to the items needed for a single-chassis system, you need the
following items to install this configuration:
• SCXI-1358 multichassis expansion kit
– HV8-HV8 cable
– SH9MD-9MD cable
– Three 8-position HVAB plugs
– One 8-slot HVAB-backplane adapter
– One 2-slot HVAB-backplane adapter
– Two 1-slot HVAB-backplane adapters
SCXI-1127/1128 User Manual 1-14 ni.com
Chapter 1 Installing and Configuring the SCXI-1127/1128
Refer to Figure 1-8 to set up this multichassis configuration.
1 32
11
1 8-Slot HVAB-Backplane Adapter
2 HV8-BAN4 Cable
3 8-Position HVAB Plug
4 2-Slot HVAB-Backplane Adapter
4 5
9
10
5 1-Slot HVAB-Backplane Adapter
6 NI 4060 for PCI
7 SH9MD-9MD Cable
8 12-Slot SCXI Chassis
AB0+
AB0–
AB2+
AB2–
6
7
8
9 HV8-HV8 Cable
10 12-Slot SCXI Chassis
11 SH9MD-9MD Cable
Figure 1-8.
12-Slot to 12-Slot Multichassis Configuration Parts Locator Diagram
1. Install the HVAB-backplane adapters and jumper blocks in the 12-slot
chassis as described in steps 1 through 3 in Single 12-Slot Chassis
Configuration.
2. Connect the HV8-HV8 cable from the first chassis, normally the
connector behind slot 1, to the HVAB connector (behind slot 12) of the
next chassis.
3. Connect the SH9MD-9MD cable from the AUX OUT connector of the
first chassis to the AUX IN connector (behind slot 5) of the next
chassis.
4. Repeat steps 1 through 3 for each additional chassis.
© National Instruments Corporation 1-15 SCXI-1127/1128 User Manual
Chapter 1 Installing and Configuring the SCXI-1127/1128
Notes
Do not connect the SH9MD-9MD cable to the 2-slot HVAB-backplane adapter.
An SCXI-1127/1128 is required in slot 12 of each 12-slot chassis to establish
communications with all the chassis in the system. If slot 12 is empty, the chassis will not
operate. It is this module that you must specify in MAX as the module cabled to the DMM.
If a chassis is configured with less than 12 slots of the HVAB-backplane adapter, use the
right-most available HVAB connector to extend to the next chassis. In this instance,
right-most means the slot closest to slot 1 when the chassis is viewed from the back.
Connecting the SCXI-1127/1128 to the DMM in a PXI-1010 Chassis
You need the following items to complete the installation:
• PXI chassis with the SCXI-1127/1128 modules installed
• SCXI-1357 kit
– Two 1-slot HVAB-backplane adapters
– One 2-slot HVAB-backplane adapter
– HV8 to BAN4 cable
– Two 8-position HVAB plugs
– SH9MD-9MD cable
• DMM
• 1/8 in. flathead screwdriver
Consult your PXI-1010 and DMM documentation for additional
instructions and warnings. Your SCXI-1127/1128 modules and any other
SCXI modules should already be installed in the chassis according to their
installation instructions. Before you proceed with your connections, make
sure you turn off your SCXI chassis.
DMM in PXI Slots 1 through 7 Configuration
To install your DMM in PXI slots 1 through 7, follow these steps:
1. Install your DMM in any one of the PXI slots 1 through 7.
2. In the SCXI subsystem, install the 2-slot HVAB-backplane adapter
behind SCXI slots 3 and 4.
3. Install additional 1-slot HVAB-backplane adapters behind SCXI slots
1 and 2 if needed.
4. Install the 8-position HVAB plugs to connect the HVAB-backplane
adapters as needed.
SCXI-1127/1128 User Manual 1-16 ni.com
Chapter 1 Installing and Configuring the SCXI-1127/1128
5. Connect the HV8-BAN4 cable from the DMM to the HVAB connector
behind SCXI slot 4.
6. Connect the SH9MD-9MD cable from the DMM to the AUX IN
connector.
7. You can install any additional SCXI-1127/1128 modules in any slot
that has an HVAB-backplane adapter behind it.
DMM in PXI Slot 8 Configuration
To install your DMM in PXI slot 8, follow these steps:
1. Install your DMM in PXI slot 8.
2. In the SCXI subsystem, install the 2-slot HVAB-backplane adapter
behind SCXI slots 3 and 4.
3. Install additional 1-slot HVAB-backplane adapters behind SCXI slots
1 and 2 if needed.
4. Install the 8-position HVAB plugs to connect the HVAB-backplane
adapters as needed.
5. Connect the HV8-BAN4 cable from the DMM to the HVAB connector
behind SCXI slot 4 of the SCXI subsystem.
6. You can install any additional SCXI-1127/1128 modules in any slot
that has an HVAB-backplane adapter behind it.
Note
The SH9MD-9MD is not required for this configuration.
Connecting the SCXI-1127/1128 to the DMM in the PXI-1011 Chassis
You will need the following items to complete the installation:
• PXI-1011 chassis with the SCXI-1127/1128 modules installed
• HV8-BAN4 cable
• DMM
• 1/8 in. flathead screwdriver
Consult your PXI-1011 and DMM documentation for additional
instructions and warnings. Your SCXI-1127/1128 modules and any other
SCXI modules should already be installed in the chassis according to their
installation instructions. Before you proceed with your connections, make
sure you turn off y our SCXI chassis.
© National Instruments Corporation 1-17 SCXI-1127/1128 User Manual
Chapter 1 Installing and Configuring the SCXI-1127/1128
DMM in PXI Slots 1 through 3 Configuration
To install your DMM in PXI slots 1 through 3, follow these steps:
1. Install your DMM in any one of the PXI slots 1 through 3.
2. In the SCXI subsystem, install the 2-slot HVAB-backplane adapter
behind SCXI slots 3 and 4.
3. Install additional 1-slot HVAB-backplane adapters behind SCXI slots
1 and 2 if needed.
4. Install the 8-position HVAB plugs to connect the HVAB-backplane
adapters as needed.
5. Connect the HV8-BAN4 cable from the DMM to the HVAB connector
behind SCXI slot 4.
6. Connect the SH9MD-9MD cable from the DMM to the AUX IN
connector.
7. You can install any additional SCXI-1127/1128 modules in any slot
that has an HVAB-backplane adapter behind it.
DMM in PXI Slot 4 Configuration
To install your DMM in slot 4, follow these steps:
1. Install you DMM in PXI slot 4.
2. Connect the HV8-BAN4 cable from the DMM to the HVAB connector
on the front of the PXI-1011 chassis.
3. Install any additional SCXI-1127/1128 modules in any SCXI slot.
Note
The DMM needs to be in PXI slot 4 in order for it to control the SCXI-1127/1128 in
the chassis.
Accessing the SCXI-1127/1128 through Other SCXI Modules Using aDAQ Device
You need the following items to complete the installation:
• SCXI chassis with the SCXI-1127/1128 modules installed (see the
appropriate previous sections)
• DAQ device cable adapter
• National Instruments DAQ device
• DAQ cable
• 1/8 in. flathead screwdriver
SCXI-1127/1128 User Manual 1-18 ni.com
14
Chapter 1 Installing and Configuring the SCXI-1127/1128
• At least one other SCXI module other than the SCXI-1127/1128,
installed in the chassis
Consult the documentation for your SCXI chassis and other SCXI modules
for additional instructions and warnings. Any non-SCXI-1127/1128
modules should already be installed according to their installation
instructions. To set up the SCXI-1127/1128 module to be accessed by a
DAQ device via another SCXI module, follow these steps while referring
to Figure 1-9:
1
2
4
3
12
13
1 Non-SCXI-1127/1128 Module
2 MIO or DIO Device
3 AB0+
4 AB0–
5 NI 4060 for PCI
You should have already installed the SCXI-1127/1128 modules and their
HVAB-backplane adapters (1357/1358) according to the instructions found
earlier in this chapter.
1. Connect the MIO/DIO cable adapter to the rear of a module that is not
2. Attach your DAQ cable to the cable adapter at the rear connector.
5
11
6AB2+
7AB2–
8 SH9MD-9MD Cable
9 HV8-BAN4 Cable
10 2-Slot HVAB-Backplane Adapter
Figure 1-9.
10
Installing the SCXI-1127/1128 with Two DAQ Devices
9
11 SCXI Chassis
12 Digital Signals Connector
13 SCXI-1127/1128 Module
14 HVAB Connector
8
6
7
the SCXI-1127/1128 module. Secure the adapter to the SCXI chassis
using the screws provided.
© National Instruments Corporation 1-19 SCXI-1127/1128 User Manual
Chapter 1 Installing and Configuring the SCXI-1127/1128
3. Attach the other end of the DAQ cable to the National Instruments
DAQ device.
4. Check the installation.
5. Turn on the SCXI chassis.
6. Turn on the computer or reconnect it to your chassis.
If you already have the appropriate software installed, you are ready to
configure the SCXI-1127/1128 via an SCXI module other than the
SCXI-1127/1128 module.
Using a DAQ Device on a PXI-1010 Chassis
You should have already installed the SCXI-1128 modules and their
HVAB-backplane adapters.
1. Turn off the power to the PXI and SCXI chassis.
2. Install your DAQ device in PXI slot 8.
Installation in this slot allows the DAQ device to directly control the
SCXI-1128 without the need for additional cabling.
3. Turn on the power to both the PXI and SCXI chassis.
Using a DAQ Device on a PXI-1011 Chassis
You should have already installed the SCXI-1128 modules and their
HVAB-backplane adapters.
1. Turn off the power to the PXI and SCXI chassis.
2. Install your DAQ device in PXI slot 4.
Installation in this slot allows the DAQ device to directly control the
SCXI-1128 without the need for additional cabling.
3. Turn on the power to both the PXI and SCXI chassis.
Connecting the SCXI-1127/1128 to an External DMM
You need the following items to complete this installation:
• SCXI-2000/2400 chassis with the SCXI-1127/1128 modules installed
or SCXI-1000/1001 chassis containing a non-SCXI-1127/1128
module connected to a DAQ device with the SCXI-1127/1128 modules
installed
• SCXI-1357 or SCXI-1358 kit
– 1-slot, 2-slot, and/or 8-slot HVAB-backplane adapter
SCXI-1127/1128 User Manual 1-20 ni.com
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