National Instruments SCXI-1129 User Manual

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SCXI

SCXI-1129 User Manual

256 Crosspoint High-Density Matrix

SCXI-1129 User Manual

February 2001 Edition

Part Number 322740A-01

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Worldwide Technical Support and Product Information

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For further support information, see the Technical Support Resources appendix. To comment on the documentation, send e-mail to techpubs@ni.com

Important Information

Warranty

The SCXI-1129 is 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.

National Instruments believes that the information in this document is accurate. The document has been carefully reviewed for technical accuracy. In the event that technical or typographical errors exist, National Instruments reserves the right to make changes to subsequent editions of this document without prior notice to holders of this edition. The reader should consult National Instruments if errors are suspected. In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it.

XCEPT AS SPECIFIED HEREIN,NATIONAL INSTRUMENTS MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE

NATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER.NATIONAL INSTRUMENTS WILL NOT BE LIABLE FOR

DAMAGES RESULTING FROM LOSS OF DATA

. This limitation of the liability of National Instruments will apply regardless of the form of action, whether in contract or tort, including

THEREOF

negligence. Any action against National Instruments must be brought within one year after the cause of action accrues. National Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control. The warranty provided herein does not cover damages, defects, malfunctions, or service failures caused by owner’s failure to follow the National Instruments installation, operation, or maintenance instructions; owner’s modification of the product; owner’s abuse, misuse, or negligent acts; and power failure or surges, fire, flood, accident, actions of third parties, or other events outside reasonable control.

, PROFITS, USE OF PRODUCTS, OR INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF ADVISED OF THE POSSIBILITY

Copyright

Under the copyright laws, this publication may not be reproduced ortransmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corporation.

Trademarks

LabVIEW™, Measurement Studio™, National Instruments™,ni.com™, NI-DAQ™,PXI™,andSCXI™are trademarks of National Instruments Corporation.

Product and company names mentioned herein are trademarks or trade names of their respective companies.

WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS

(1) NATIONAL INSTRUMENTS PRODUCTS ARE NOT DESIGNED WITH COMPONENTS AND TESTING FOR A LEVEL OF RELIABILITY SUITABLE FOR USE IN OR IN CONNECTION WITH SURGICAL IMPLANTS OR AS CRITICAL COMPONENTS IN ANY LIFE SUPPORT SYSTEMS WHOSE FAILURE TO PERFORM CAN REASONABLY BE EXPECTED TO CAUSE SIGNIFICANT INJURY TO A HUMAN.

(2) IN ANY APPLICATION, INCLUDING THE ABOVE, RELIABILITY OF OPERATION OF THE SOFTWARE PRODUCTS CAN BE IMPAIRED BY ADVERSE FACTORS, INCLUDING BUT NOT LIMITED TO FLUCTUATIONS IN ELECTRICAL POWER SUPPLY, COMPUTER HARDWARE MALFUNCTIONS, COMPUTER OPERATING SYSTEM SOFTWARE FITNESS, FITNESS OF COMPILERS AND DEVELOPMENT SOFTWARE USED TO DEVELOP AN APPLICATION, INSTALLATION ERRORS, SOFTWARE AND HARDWARE COMPATIBILITY PROBLEMS, MALFUNCTIONS OR FAILURES OF ELECTRONIC MONITORING OR CONTROL DEVICES, TRANSIENT FAILURES OF ELECTRONIC SYSTEMS (HARDWARE AND/OR SOFTWARE), UNANTICIPATED USES OR MISUSES, OR ERRORS ON THE PART OF THE USER OR APPLICATIONS DESIGNER (ADVERSE FACTORS SUCH AS THESE ARE HEREAFTER COLLECTIVELY TERMED “SYSTEM FAILURES”). ANY APPLICATION WHERE A SYSTEM FAILURE WOULD CREATE A RISK OF HARM TO PROPERTY OR PERSONS (INCLUDING THE RISK OF BODILY INJURY AND DEATH) SHOULD NOT BE RELIANT SOLELY UPON ONE FORM OF ELECTRONIC SYSTEM DUE TO THE RISK OF SYSTEM FAILURE. TO AVOID DAMAGE, INJURY, OR DEATH, THE USER OR APPLICATION DESIGNER MUST TAKE REASONABLY PRUDENT STEPS TO PROTECT AGAINST SYSTEM FAILURES, INCLUDING BUT NOT LIMITED TO BACK-UP OR SHUT DOWN MECHANISMS. BECAUSE EACH END-USER SYSTEM IS CUSTOMIZED AND DIFFERS FROM NATIONAL INSTRUMENTS' TESTING PLATFORMS AND BECAUSE A USER OR APPLICATION DESIGNER MAY USE NATIONAL INSTRUMENTS PRODUCTS IN COMBINATION WITH OTHER PRODUCTS IN A MANNER NOT EVALUATED OR CONTEMPLATED BY NATIONAL INSTRUMENTS, THE USER OR APPLICATION DESIGNER IS ULTIMATELY RESPONSIBLE FOR VERIFYING AND VALIDATING THE SUITABILITY OF NATIONAL INSTRUMENTS PRODUCTS WHENEVER NATIONAL INSTRUMENTS PRODUCTS ARE INCORPORATED IN A SYSTEM OR APPLICATION, INCLUDING, WITHOUT LIMITATION, THE APPROPRIATE DESIGN, PROCESS AND SAFETY LEVEL OF SUCH SYSTEM OR APPLICATION.

.CUSTOMER’S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF

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 industrial-commercial 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 energyand, if not installed and used in strict accordance with theinstructions 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.

for more information.

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.

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:

» 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.

Chapter 1 Installing and Configuring the SCXI-1129

Installing the Software ...................................................................................................1-2

Safety Information .........................................................................................................1-3

Unpacking......................................................................................................................1-5

Installing the Hardware..................................................................................................1-5

Installing the SCXI-1129 Module into the SCXI Chassis...............................1-5

Connecting the SCXI-1129 to the DMM in a Single Chassis System ............1-7

Single 4-Slot Chassis Configuration.................................................1-8

Single 12-Slot Chassis Configuration...............................................1-9

Connecting the SCXI-1129 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-1129 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-1129 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-1129 through Other SCXI Modules Using

a DAQ Device ..............................................................................................1-19

Using a DAQ Device on a PXI-1010 Chassis .................................................1-21

Using a DAQ Device on a PXI-1011 Chassis .................................................1-21

Connecting the SCXI-1129 to an External DMM...........................................1-21

Configuring and Self-Test .............................................................................................1-22

Auto-Detecting Modules .................................................................................1-23

Manually Adding Modules..............................................................................1-24

Chapter 2 Using the SCXI-1129

Operating as a Matrix ....................................................................................................2-1

Configurations .................................................................................................2-2

4 × 16 Matrix Configuration............................................................................2-4

4 × 32 Matrix Configuration............................................................................2-6

8 × 16 Matrix Configuration............................................................................2-8

4 × 64 Matrix Configuration............................................................................2-10

8 × 32 Matrix Configuration............................................................................2-12

Contents

16 × 16 Matrix Configuration ......................................................................... 2-14

Matrix Expansion............................................................................................ 2-16

Hardware and Software Scanning ................................................................................. 2-20

Hardware-Timed Scanning ............................................................................. 2-21

Multimodule Scanning....................................................................................2-24

Software Scanning .......................................................................................... 2-26

Independent Switch Control............................................................................2-26

Appendix A Specifications

Appendix B

Hardware-Timed Scanning Using a DMM....................................... 2-21

Hardware-Timed Scanning Using External Instruments.................. 2-22

Synchronous Scanning .......................................................2-23

Handshaking Scanning....................................................... 2-23

Chain Triggering............................................................................... 2-24

Example ............................................................................................ 2-24

Wire ORed........................................................................................ 2-25

Dummy Entries................................................................................. 2-25

Accessories

Appendix C SCXI-1129 Block Diagram

Appendix D SCXI-1129 Front Connector

Appendix E Common Questions

Appendix F Technical Support Resources

Glossary

Index

SCXI-1129 User Manual viii ni.com

Installing and Configuring the SCXI-1129

The SCXI-1129 is a 256 crosspoint high-density matrix module. It provides up to a 4 × 64, 2-wire switch matrix configuration on an SCXI platform. The SCXI-1129 can also operate as four 4 × 16, 2-wire matrixes; two 4 × 32, 2-wire matrixes; or two 8 × 16, 2-wire matrixes.

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.

Through the use of special terminal blocks (refer to Table 2-1, Terminal

Block Matrix Configuration), the SCXI-1129 can become many different

matrix types. Refer to Table 1-1 for a complete list of matrix configurations.

Table 1-1. Possible Configurations of the SCXI-1129

Matrix Configuration Quantity

4 × 16 4 each

8 × 16 2 each

4 × 32 2 each

4 × 64 1 each

8 × 32 1 each

16 × 16 1 each

To accommodate even larger testing needs, you can expand the matrix size by combining additional modules. With the use of terminal blocks, you can expand rows on the 4 × 16 and 16 × 16 matrixes, and you can expand rows and columns on the 4 × 64 and the 8 × 32 matrixes. 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

Chapter 1 Installing and Configuring the SCXI-1129

wiring. By connecting multiple modules to the HVAB adapter, it is possible to expand the matrix size without external row or column connectors. For more information on matrix expansion, refer to the Matrix Expansion section in Chapter 2, Using the SCXI-1129.

The SCXI-1129 is designed to work well at both low and high voltages. For low-voltage measurements, the SCXI-1129 uses relays with < 9 µV thermal offset to ensure accurate measurements. For details, refer to Appendix A, Specifications.

Installing the Software

You can control the SCXI-1129 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. Install your ADE if you have not done so already.

2. Insert your NI-SWITCH software CD into your CD drive. The installation window 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-1129 User Manual 1-2 ni.com

The NI-SWITCH and NI-DMM 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. Click the Install NI-SWITCH option.

4. To install the instrument driver, Soft Front Panel(s), and ADE examples, choose Programmatic and Interactive Support. To install only the Soft Front Panel(s), choose Interactive Support Only.

Note

The Interactive Support Only choice does not allow you to program the instrument

with any programming languages.

5. For advanced users only—when installing NI-SWITCH, the

Development Environments panel provides you with the following choices:

• If you click the Advanced button on this panel, you can custom

• If you do not want to install certain drivers, click Advanced and

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.

6. After completing the installation, power off your computer.

Safety Information

Chapter 1 Installing and Configuring the SCXI-1129

install National Instruments drivers such as NI-DAQ, NI-IVI, and NI-VISA.

uncheck the driver(s) you do not want installed.

The following cautions contain important safety information concerning hazardous voltages.

Cautions

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 powered 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 I

environment per 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,

Category I refers to a signal level such as voltages of an isolation transformer secondary on a PWB.

Chapter 1 Installing and Configuring the SCXI-1129

power the device off and do not use it until service-trained personnel can check its safety. 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 National Instruments for service and repair to ensure that its safety features are not compromised.

Yo u must insulate all of your signal connections to the highest voltage with which the SCXI-1129 can come in contact.

When using the device with high common-mode voltages, you must insulate your signal wires for the highest input voltage. National Instruments 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 terminal block screw terminals, 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. National Instruments is not liable for any damages or injuries resulting from incorrect signal connections.

If hazardous voltages (≥30 V

and42.4V

rms

or 60 VDC) are present, you must connect

peak

a safety earth-ground wire to the terminal block safety-ground lug, shown in Figure 1-1. This complies with safety agency requirements and protects against electric shock when the terminal block 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 terminal block. National Instruments 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.

SCXI-1129 User Manual 1-4 ni.com

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.

Unpacking

Chapter 1 Installing and Configuring the SCXI-1129

Your SCXI-1129 module is shipped in an antistatic package to prevent electrostatic damage to the module. Electrostatic discharge can damage several components on the module. To avoid such damage in handling the module, take the following precautions:

• Ground yourself using a grounding strap or by holding a grounded object.

• Touch the antistatic package to a metal part of your computer chassis before removing the module from the package.

Caution

Never touch the exposed pins of connectors.

Remove the module from the package and inspect the module for loose components or any sign of damage. Notify National Instruments if the module appears damaged in any way. Do not install a damaged module into your computer.

Store your SCXI-1129 module in the antistatic envelope when not in use.

Installing the Hardware

The following section describes how to install your SCXI-1129 for use with SCXI chassis, National Instruments data acquisition (DAQ) devices, and National Instruments digital multimeters (DMMs).

Installing the SCXI-1129 Module into the SCXI Chassis

You need the following items to complete the installation:

• SCXI-1129

• SCXI chassis

• 1/8 in. flathead screwdriver

Chapter 1 Installing and Configuring the SCXI-1129

To install your SCXI-1129 module into the SCXI chassis, refer to Figure 1-1 while completing the following steps:

1 AB0+ 2 AB0– 3NI4060forPCI 4 AB2+

5AB2– 6 HV8-BAN4 7SH9MD-9MD

8 2-Slot HVAB-Backplane Adapter 9SCXIChassis 10 SCXI-1129 Module

Figure 1-1. Installing the SCXI-1129 into an SCXI Chassis

1. Power off the computer that contains the DAQ/DMM device or disconnect it from your SCXI chassis.

2. Power off the SCXI chassis. Do not insert the SCXI-1129 module into a chassis that is powered on.

3. Insert the SCXI-1129 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.

Note

When installing the SCXI-1129 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-1129. You can load other SCXI modules from left to right.

SCXI-1129 User Manual 1-6 ni.com

Chapter 1 Installing and Configuring the SCXI-1129

4. Insert any other SCXI modules into the remaining slots in the same manner as described in step 3.

5. Secure all the SCXI-1129 modules to the SCXI chassis using both thumbscrews.

To configure your SCXI-1129, follow the procedures for your system in the sections that follow.

Connecting the SCXI-1129 to the DMM in a Single Chassis System

You need the following items for this installation:

• SCXI-1000/1000DC/1001 chassis with the SCXI-1129 modules installed

• SCXI-1357 (4-slot)/1358 (12-slot) kit

– 1-, 2-, 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-1129 modules and any other SCXI modules should already be installed in the chassis according to their installation instructions.

Caution

Before you proceed with your connections, make sure you power off your

SCXI chassis.

Chapter 1 Installing and Configuring the SCXI-1129

Single 4-Slot Chassis Configuration

To make connections in the single 4-slot chassis configuration, refer to Figure 1-2 while completing the following steps:

1 SCXI-1129 Module 2 4-Slot SCXI Chassis 3 2-Slot HVAB-Backplane Adapter

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-1129 modules in any slot that has an HVAB-backplane adapter behind it.

4 1-Slot HVAB-Backplane Adapter 5 8-Position HVAB Plug 6 NI 4060 for PCI

Figure 1-2. 4-Slot Single Chassis Installation

7SH9MD-9MDCable 8 HV8-BAN4 Cable

SCXI-1129 User Manual 1-8 ni.com

Chapter 1 Installing and Configuring the SCXI-1129

Note

In this configuration, a SCXI-1129 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 cabled module to the DMM.

Single 12-Slot Chassis Configuration

To make connections in the single 12-slot chassis configuration, refer to Figure 1-3 while completing the following steps:

1 SCXI-1129 Module 2 12-Slot SCXI Chassis 3 2-Slot HVAB-Backplane Adapter 4 1-Slot HVAB-Backplane Adapter 5 8-Position HVAB Plug

6NI4060forPCI 7 SH9MD-9MD Cable 8 HV8-BAN4 Cable 9 8-Slot HVAB-Backplane Adapter

Figure 1-3.

12-Slot Single Chassis Installation

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 slots 1 through 4 if needed.

3. Install the 8-position HVAB plugs to connect the HVAB-backplane adapters as needed.

Chapter 1 Installing and Configuring the SCXI-1129

4. Connect the HV8-BAN4 cable from the DMM to the HVAB connector behind slot 12.

5. Connect the SH9MD-9MD cable from the DMM to the AUX IN connector behind slot 5.

6. You can install any additional SCXI-1129 modules in any slot that has an HVAB-backplane adapter behind it.

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-1129 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 cabled module to the DMM.

Connecting the SCXI-1129 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

– Two8-positionHVABplugs

– One 2-slot HVAB-backplane adapter

– Two 1-slot HVAB-backplane adapters

SCXI-1129 User Manual 1-10 ni.com

Chapter 1 Installing and Configuring the SCXI-1129

To make connections in the 4-slot and 4-slot multichassis configuration, refer to Figure 1-4 while completing the following steps:

1 2

AB0+

AB0–

AB2+

AB2–

1 2-Slot HVAB Backplane Adapter 2 8-Position HVAB Plug 3 1-Slot HVAB Backplane Adapter

5NI4060forPCI 6 SH9MD-9MD Cable 7 4-Slot SCXI Chassis

8 SH9MD-9MD Cable 9 HV8-HV8 Cable 10 4-Slot SCXI Chassis

4 HV8-BAN4 Cable

Figure 1-4. 4-Slot to 4-Slot Multichassis Configuration Parts Locator Diagram

Chapter 1 Installing and Configuring the SCXI-1129

1. Install the HVAB-backplane adapters and 8-position HVAB plugs in the next chassis as described in steps 1 through 3 in the Single 4-Slot

Chassis Configuration section.

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-1129 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 cabled module 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

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Chapter 1 Installing and Configuring the SCXI-1129

To make connections in the 4-slot and 12-slot multichassis configuration, refer to Figure 1-5 while completing the following steps:

AB0+

AB0–

AB2+

AB2–

1 2-Slot HVAB-Backplane Adapter 2 1-Slot HVAB-Backplane Adapter 3 HV8-BAN4 Cable 4NI4060forPCI

5 SH9MD-9MD Cable 6 8-Position HVAB Plug 7 8-Slot HVAB-Backplane Adapter 8 12-Slot SCXI Chassis

9 SH9MD-9MD Cable 10 HV8-HV8 Cable 11 4-Slot SCXI Chassis

Figure 1-5. 4-Slot to 12-Slot Multichassis Configuration Parts Locator Diagram

Chapter 1 Installing and Configuring the SCXI-1129

1. Install the HVAB-backplane adapters and jumper blocks in the 12-slot chassis as described in steps 1 through 3 in the Single 12-Slot Chassis

Configuration section.

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.

AnSCXI-1129isrequiredinslot4ofthe4-slotchassisandslot12ofthe12-slotchassis 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 cabled module 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

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Chapter 1 Installing and Configuring the SCXI-1129

To make connections in the 12-slot and 12-slot multichassis configuration, refer to Figure 1-6 while completing the following steps:

1 32

1 8-Slot HVAB-Backplane Adapter 2 HV8-BAN4 Cable 3 8-Position HVAB Plug 4 2-Slot HVAB-Backplane Adapter

4 5

5 1-Slot HVAB-Backplane Adapter 6 NI 4060 for PCI 7SH9MD-9MDCable 8 12-Slot SCXI Chassis

AB0+

AB0–

AB2+

AB2–

9 HV8-HV8 Cable 10 12-Slot SCXI Chassis 11 SH9MD-9MD Cable

Figure 1-6. 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 the Single 12-Slot Chassis

Configuration section.

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.

Chapter 1 Installing and Configuring the SCXI-1129

Notes

Do not connect the SH9MD-9MD cable to the 2-slot HVAB-backplane adapter.

An SCXI-1129 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 cabled module 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-1129 to the DMM in a PXI-1010 Chassis

You need the following items to complete the installation:

• PXI chassis with the SCXI-1129 modules installed

• SCXI-1357 kit

– Two 1-slot HVAB-backplane adapters

– One 2-slot HVAB-backplane adapter

– HV8 to BAN4 cable

– Two8-positionHVABplugs

– SH9MD-9MD cable

• DMM

• 1/8 in. flathead screwdriver

Consult your PXI-1010 and DMM documentation for additional instructions and warnings. You should have already installed the SCXI-1129 modules and any other SCXI modules in the chassis according to their installation instructions. Before you proceed with yourconnections, make sure you power 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.

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Chapter 1 Installing and Configuring the SCXI-1129

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-1129 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. InstallyourDMMinPXIslot8.

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-1129 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-1129 to the DMM in the PXI-1011 Chassis

You need the following items to complete the installation:

• PXI-1011 chassis with the SCXI-1129 modules installed

• HV8-BAN4 cable

• DMM

• 1/8 in. flathead screwdriver

Consult your PXI-1011 and DMM documentation for additional instructions and warnings. You should have already installed your SCXI-1129 modules and any other SCXI modules in the chassis according to their installation instructions. Before you proceed with yourconnections, make sure you power off your SCXI chassis.

Chapter 1 Installing and Configuring the SCXI-1129

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-1129 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 your DMM in slot 4.

2. Install the 2-slot HVAB-backplane adapter behind slots 3 and 4.

3. Install additional 1-slot HVAB-backplane adapters behind 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 slot 4.

6. You can install any additional SCXI-1129 modules in any slot that has an HVAB-backplane adapter behind it.

Note

The SH9MD-9MD is not required for this configuration.

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Chapter 1 Installing and Configuring the SCXI-1129

Accessing the SCXI-1129 through Other SCXI Modules UsingaDAQDevice

You need the following items to complete the installation:

• SCXI chassis with the SCXI-1129 modules installed (see the appropriate previous sections)

• DAQ device cable adapter

• National Instruments DAQ device

• DAQ cable

• 1/8 in. flathead screwdriver

• At least one other SCXI module other than the SCXI-1129, installed in

the chassis

Consult the documentation for your SCXI chassis and other SCXI modules for additional instructions and warnings. You should have already installed any non-SCXI-1129 modules according to their installation instructions. You should have already installed the SCXI-1129 modules and their HVAB-backplane adapters (SCXI-1357/1358) according to the instructions found earlier in this chapter.

Chapter 1 Installing and Configuring the SCXI-1129

To set up the SCXI-1129 module to be accessed by a DAQ device through another SCXI module, refer to Figure 1-7 while completing the following steps:

1 Non-SCXI-1129 Module 2DAQCable 3 MIO or DIO Device

4 2-Slot HVAB-Backplane

Adapter

5SCXIChassis

6 Digital Signals Connector 7 SCXI-1129 Module 8 HVAB Connector

Figure 1-7. Installing the SCXI-1129 with an SCXI Module and a DAQ Device

1. Connect the MIO/DIO cable adapter to the rear of a module that is not the SCXI-1129 module. Secure the adapter to the SCXI chassis using the screws provided.

2. Attach your DAQ cable to the cable adapter at the rear connector.

3. Attach the other end of the DAQ cable to the National Instruments DAQ device.

4. Check the installation.

5. Power on the SCXI chassis.

6. Power on the computer or reconnect it to your chassis.

If you already have the appropriate software installed, you are ready to configure the SCXI-1129 through an SCXI module other than the SCXI-1129 module. If you have not installed your software, refer to the Installing the Software section of this chapter.

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Chapter 1 Installing and Configuring the SCXI-1129

UsingaDAQDeviceonaPXI-1010Chassis

You should have already installed the SCXI-1129 modules and their HVAB-backplane adapters.

1. Power 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-1129 without the need for additional cabling.

3. Power on the power to both the PXI and SCXI chassis.

UsingaDAQDeviceonaPXI-1011Chassis

You should have already installed the SCXI-1129 modules and their HVAB-backplane adapters.

1. Power 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-1129 without the need for additional cabling.

3. Power on the power to both the PXI and SCXI chassis.

Connecting the SCXI-1129 to an External DMM

You need the following items to complete this installation:

• SCXI-2000/2400 chassis with the SCXI-1129 modules installed or SCXI chassis connected to a DAQ device with the SCXI-1129 modules installed or SCXI chassis connected to a NI 4021 (switch controller) with the SCXI-1129 installed

• SCXI-1357 or SCXI-1358 kit

– 1-slot, 2-slot, and/or 8-slot HVAB-backplane adapter

– SH9MD-9MD cable

– 8-position HVAB plug

• External DMM (if needed)

• HV8-BAN4 or BAN2-WIRE kit (two kits needed for 4-wire)

• Cable or wires to connect the handshaking lines to the SCXI-1129

• 1/8 in. flathead screwdriver

Consult the documentation for your SCXI chassis and other SCXI modules for additional instructions and warnings. You should have installed your SCXI-1129 modules according to the instructions given in the Installing

the SCXI-1129 Module into the SCXI Chassis section. You should have

Chapter 1 Installing and Configuring the SCXI-1129

already installed any other SCXI modules according to their installation instructions. To install the SCXI-1129 module with an SCXI chassis, follow these steps:

1. Install the SCXI-1129s in the chassis and install the HVAB as described in one of the Connecting the SCXI-1129 backplane sections.

2. To connect an SCXI-1129 to an external DMM device, you need two cables—the HV8-BAN4 or BAN2-WIRE cable, and a cable to connect the handshaking lines from the SCXI-1129 to the DMM. Attach your HV8-BAN4 cable to the HVAB connector on the HVAB-backplane adapter, or connect the bare wire end of the BAN2-WIRE cable to one or more rows on one of the terminal blocks.

3. Attach the other end of the HV8-BAN4 or BAN2-WIRE cable to the inputs of your external DMM device.

4. Connect the handshaking lines from the front of either the SCXI-1333, SCXI-1334, SCXI-1335, SCXI-1336, SCXI-1337, or SCXI-1339 terminal block to the appropriate lines on the external DMM.

5. Check the installation.

6. Power on the SCXI chassis.

7. Power on the computer or reconnect it to your chassis.

The SCXI-1129 module is now installed.

Note

For the system to function properly, it must be controlled by a DAQ device or

NI 4021 switch controller, or be a SCXI-2000 chassis.

Configuring and Self-Test

Launch MAX to configure and test your SCXI-1129. If you need help during the configuration process, open the Measurement & Automation Help file by selecting Help»Help Topics.

1. Double-click the Measurement & Automation Explorer icon on your desktop.

2. To add a new chassis, right-click Devices and Interfaces and select Create New.

3. Select the appropriate chassis from the list box and click Finish.

SCXI-1129 User Manual 1-22 ni.com

4. To configure the chassis, select the Chassis ID. The chassis ID is an

arbitrary number that you choose for use by the software to uniquely specify the chassis.

5. Select the Chassis Address (refertoyourSCXIchassisusermanual

for further information).

For the SCXI-2000, you also need to select the Baud Rate and COM Port.

You now have the choice of auto-detecting your modules or manually adding them depending on your application.

Auto-Detecting Modules

If you selected auto-detect and the chassis is not an SCXI-2000 remote chassis, you must have your chassis connected to your National Instruments device.

Note

Make sure you have your chassis powered on.

1. Click Next.

2. Select your communication path, except in the case of the SCXI-2000,

and click Next.

3. Select the module cabled to your communication path, except in the case of the SCXI-2000 or if your module supports Auto Cable Detect, and click Finish.

Chapter 1 Installing and Configuring the SCXI-1129

Note

The SCXI-1129 has Auto Cable Detect, which means that just by connecting the communications cable to the SCXI-1129, the software can identify that the SCXI-1129 is the cabled module.

Your SCXI chassis and SCXI-1129 modules are now configured in the software with your modules. To configure the properties for a particular module, perform the following steps:

1. Expand Devices and Interfaces. You see the chassis selected in the

list.

2. Expand Chassis.

3. Right-click the module you want to configure and select Properties.

Tabs are displayed containing attributes for different properties of the module. You can select any tab to see and/or change any attributes.

Chapter 1 Installing and Configuring the SCXI-1129

Manually Adding Modules

If you selected not to auto-detect your SCXI modules, you must add each of your modules separately.

1. Click Finish in the SCXI Auto-Detect window.

2. Expand Devices and Interfaces. You will see the chassis you selected

in the list.

3. Expand Chassis.

4. Right-click the slot that is cabled to your device and select Insert.For

DAQ devices this is the slot cabled to the DAQ device. For DMMs, this is typically slot 4, on 4-slot chassis, and slot 12 on 12-slot chassis, based on the installation instructions in earlier sections used to configure the chassis.

5. Select the module that is intended for that slot and click Next.

6. You are now given the option to make this the module that controls the chassis. Select the DAQ device or DMM you cabled to the chassis using the Connected to: control. Confirm that there is a check in the checkbox labeled This device will control the chassis and click Next.

7. You are presented with a series of properties for the module. Select the appropriate values for the attributes and click Next. After making your selections, click Finish.

You are now finished configuring the slot. Configure the rest of your modules in the same manner.

To remove a module or chassis, right-click the chassis or module you want to remove and select Delete.

To test the chassis configuration, right-click the chassis and select Test.

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Using the SCXI-1129

This chapter discusses the operation of the SCXI-1129. The SCXI-1129 is a relay switching matrix.

Operating as a Matrix

A matrix is one of the most flexible switching configurations. Unlike a multiplexer, a matrix can connect multiple inputs to multiple outputs. A multiplexer is typically organized into channels and commons, while a matrix is organized into columns and rows. You can connect any column to any number of rows and any row to any number of columns. At each intersection of a row and column, there is a switch. When the switch is closed, the row is connected to the column. The SCXI-1129 is a 2-wire matrix, as shown in Figure 2-1. Matrixes are useful in applications where you desire maximum switching flexibility.

Col 0 Col 1 Col 2 Col 3

Row 0

Row 1

Figure 2-1. 2

4, 2-Wire Matrix Configuration

Chapter 2 Using the SCXI-1129

Configurations

Matrix switching is a flexible, and very powerful, method for making complex connections. You can make simultaneous connections so that one input is able to drive many outputs. It is also possible for several outputs to drive a single input.

You can use the SCXI-1129 with one of six different terminal blocks to make various matrix configuration, as shown in Table 2-1. Terminals provide the means of connection to labeled row and column terminals. Refer to Figure 2-2 for an example of a terminal block.

Table 2-1. Terminal Block Matrix Configuration

Matrix

Terminal Block

Configuration

SCXI-1333 4 × 16 4

SCXI-1337 8 × 16 2

SCXI-1339 4 × 32 2

SCXI-1334 4 × 64 1

SCXI-1335 8 × 32 1

SCXI-1336 16 × 16 1

Quantity of

Matrixes

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Chapter 2 Using the SCXI-1129

–

B4R3

B4R2

B4R1

B4R0

B4C15

B4C14

B4C13

–

B2C15+–

B2C14+–

–

B2R3+–

B2R2+–

B2R1+–

B2R0

B2C13+–

B4C12

B2C12+–

B4C11

B2C11+–

B4C10

B2C10+–

B4C9

B2C9+–

B4C8

B2C8+–

B4C7

B2C7+–

B4C6

B2C6+–

B4C5

B2C5+–

B4C4

B2C4+–

–

B3R3

B3R2

B3R1

B3R0

B3C15

B3C14

B3C13

B3C12

B3C11

–

B1C15+–

B1C14+–

B1C13+–

B1C12+–

–

B1R3+–

B1R2+–

B1R1+–

B1R0

B1C11+–

B3C10

B1C10+–

B3C9

B1C9+–

B3C8

B1C8+–

B3C7

B1C7+–

–

B3C6

B3C5

B3C4

B1C6+–

B1C5+–

B1C4+–

–

B4C2

B2C2+–

B4C1

B2C1+–

B4C0

B2C0

B4C3

B2C3+–

–

B3C2

B1C2+–

B3C1

B1C1+–

B3C0

B1C0

B3C3

B1C3+–

1 Ground Reference for Trigger Signals 2 Column Expansion Bus 3 Column Connections 4 Row Connections

5 Cable Strain-Relief 6 External Trigger Input (EXTRIGIN) 7 Scanner Advance Output (SCAN ADV) 8 Safety Ground Lug

Figure 2-2. Terminal Block Example (SCXI-1333)

Chapter 2 Using the SCXI-1129

××××

16 Matrix Configuration

Figure 2-3 shows an example of the SCXI-1129 configured as a 4 × 16, 2-wire matrix. In the 4 × 16 matrix configuration, you have independent access to four, 4 × 16 matrixes. The diagram shows connections for a general test setup that connects both instruments and devices under test (DUTs) to columns while using rows as connection points. You can create other terminal block configurations by connecting rows/columns of the basic configuration.

Source

Measurement

Figure 2-3. 4× 16 Matrix Test Setup Example

Measurement

DUT

• • •

DUT

C15

Figure 2-4 is the block diagram of the SCXI-1129 in the 4 × 16 configuration. The diagram is the basic configuration of the SCXI-1129 and shows the channels name that NI-SWITCH uses. With software, you can create different configurations by connecting the rows of the appropriate switch banks.

For example, connecting the rows of banks one and two and the rows of banks three and four creates a dual, 4 × 32 matrix. Connecting the rows of all four banks creates a 4 × 64 matrix. You can access signals through the terminal block or, if the HVAB is connected, directly from the backplane. This matrix is the most general purpose and versatile of the matrixes. To connect signals to the HVAB, connect the chosen rows to COM0–COM3, then connect COM0–COM3 to AB0–AB3.

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Chapter 2 Using the SCXI-1129

B1C0–B1C15

B1R0–B1R3

B2C0–B2C15

B2R0–B2R3

B3C0–B3C15

B3R0–B3R3

B4C0–B4C15

B4R0–B4R3

16 columns

4rows

16 columns

4rows

16 columns

4rows

16 columns

4rows

SCANADVD

EXTRIGIN

Front Signal

Connector

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

128Kx8SRAM

Scan List Memory

Digital Interface

Calibration EEPROM

Connection Relays

0 1 2 3

and Control

(FPGA)

Analog Bus Relays

0 1 2 3

AB0 AB1 AB2 AB3

Com0 Com1

Com2 Com3

SCXIBus Interface

High-

Voltage

Rear

Signal

Connector

Digital Comm.

Low-

Voltage

Rear

Panel

Signal

Connector

SCXIBus

Connector

SCXI-1333

Terminal

Block

SCXI-1129

Module

B1R0 = Bank 1 Row 0 B1C0 = Bank 1 Column 0

Each row and column consists of two wires. One for source (+) and one for return (–).

Note: The analog bus relays have a built-in safety interlock. For safety reasons, they cannot be closed unless a terminal block is connected.

Figure 2-4. 4

16 Matrix Configuration

Chapter 2 Using the SCXI-1129

××××

32 Matrix Configuration

The 4 × 32 matrix configuration gives you control of two independent, 4 × 32 matrixes. You can make connection to the rows using either the

HVAB or the terminal block. Columns are accessed through the terminal block. This configuration provides a more convenient way to create matrixes for applications that require a higher column count than the 4 × 16 matrix while still providing access to the analog bus. To connect

signals to the HVAB, connect the chosen rows to COM0–COM3, then connect COM0–COM3 to AB0–AB3. Refer to Figure 2-5 for the channel names that NI-SWITCH uses.

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Chapter 2 Using the SCXI-1129

B1C0–B1C15

B1C16–B1C31

B1R0–B1R3

B2C0–B2C15

B2C16–B2C31

B2R0–B2R3

16 columns

4rows

16 columns

4rows

16 columns

4rows

16 columns

4rows

SCANADVD

EXTRIGIN

Front Signal

Connector

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

128Kx8SRAM

Scan List Memory

Digital Interface

Calibration EEPROM

Connection Relays

0 1 2 3

and Control

(FPGA)

Analog Bus Relays

0 1 2 3

AB0 AB1 AB2 AB3

Com0 Com1

Com2 Com3

SCXIBus Interface

High-

Voltage

Rear

Signal

Connector

Digital

Comm.

Low-

Voltage

Rear

Panel

Signal

Connector

SCXIBus

Connector

SCXI-1339

Terminal

Block

SCXI-1129

Module

B1R0 = Bank 1 Row 0 B1C0 = Bank 1 Column 0

Each row and column consists of two wires. One for source (+) and one for return (–).

Note: The analog bus relays have a built-in safety interlock. For safety reasons, they cannot be closed unless a terminal block is connected.

Figure 2-5. 4

32 Matrix Configuration

Chapter 2 Using the SCXI-1129

××××

16 Matrix Configuration

The 8 × 16 matrix configuration gives you control of two independent, 8 × 16 matrixes. You can access the HVAB at up to four rows at a time. To connect signals to the HVAB, connect the chosen rows to COM0–COM3, then connect COM0–COM3 to AB0–AB3. This configuration provides a

more convenient way to create matrixes for applications that require a higher row count than the 4 × 16 matrix. Refer to Figure 2-6 for the channel

names that NI-SWITCH uses.

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Chapter 2 Using the SCXI-1129

B1C0–B1C15

B1R0–B1R3

B2R0-B2R3

B1R4-B1R7

B2C0–B2C15

B2R4–B2R7

16 columns

4rows

16 columns

4rows

16 columns

4rows

16 columns

4rows

SCANADVD

EXTRIGIN

Front Signal

Connector

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

128Kx8SRAM

Scan List Memory

Digital Interface

Calibration EEPROM

Connection Relays

0 1 2 3

and Control

(FPGA)

Analog Bus Relays

0 1 2 3

AB0 AB1 AB2 AB3

Com0 Com1

Com2 Com3

SCXIBus Interface

High-

Voltage

Rear

Signal

Connector

Digital

Comm.

Low-

Voltage

Rear

Panel

Signal

Connector

SCXIBus

Connector

SCXI-1337

Terminal

Block

SCXI-1129

Module

B1R0 = Bank 1 Row 0 B1C0 = Bank 1 Column 0

Each row and column consists of two wires. One for source (+) and one for return (–).

Note: The analog bus relays have a built-in safety interlock. For safety reasons, they cannot be closed unless a terminal block is connected.

Figure 2-6.

8×16 Matrix Configuration

Chapter 2 Using the SCXI-1129

××××

64 Matrix Configuration

The 4 × 64 matrix configuration gives you control over the entire switch matrix with no subdivisions. All 256 crosspoints are accessible as a single block. You can now make connections using either the HVAB or the terminal block. To connect signals to the HVAB, connect the chosen rows to COM0–COM3, then connect COM0–COM3 to AB0–AB3.

Columns are accessed through the terminal block. This configuration provides a more convenient way to access all of the switches in the matrix while still having access to the HVAB. Refer to Figure 2-7 for the channel

names that NI-SWITCH uses.

SCXI-1129 User Manual 2-10 ni.com

Chapter 2 Using the SCXI-1129

C0–C15

R0–R3

C16–C31

C32–C47

C48–C63

16 columns

4rows

16 columns

4rows

16 columns

4rows

16 columns

4rows

SCANADVD

EXTRIGIN

Front Signal

Connector

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

128Kx8SRAM

Scan List Memory

Digital Interface

Calibration EEPROM

Connection Relays

0 1 2 3

and Control

(FPGA)

Analog Bus Relays

0 1 2 3

AB0 AB1 AB2 AB3

Com0 Com1

Com2 Com3

SCXIBus Interface

High-

Voltage

Rear

Signal

Connector

Digital

Comm.

Low-

Voltage

Rear

Panel

Signal

Connector

SCXIBus

Connector

SCXI-1334

Terminal

Block

SCXI-1129

Module

B1R0 = Bank 1 Row 0 B1C0 = Bank 1 Column 0

Each row and column consists of two wires. One for source (+) and one for return (–).

Note: The analog bus relays have a built-in safety interlock. For safety reasons, they cannot be closed unless a terminal block is connected.

Figure 2-7. 4

64 Matrix Configuration

Chapter 2 Using the SCXI-1129

××××

32 Matrix Configuration

The 8 × 32 matrix configuration gives you control over the entire switch matrix with no subdivisions. All 256 crosspoints are treated as a contiguous block. This configuration provides an easy way to create a full

256 crosspoint matrix for applications requiring more than four rows—but still needing many columns. You can access the HVAB at up to four rows at a time. To connect signals to the HVAB, connect the chosen rows to

COM0–COM3, then connect COM0–COM3 to AB0–AB3. Refer to Figure 2-8 for the channel names that NI-SWITCH uses.

SCXI-1129 User Manual 2-12 ni.com

Chapter 2 Using the SCXI-1129

C0–C15

R0–R3

C16–C31

R4–R7

16 columns

4rows

16 columns

4rows

16 columns

4rows

16 columns

4rows

SCANADVD

EXTRIGIN

Front Signal

Connector

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

128Kx8SRAM

Scan List Memory

Digital Interface

Calibration EEPROM

Connection Relays

0 1 2 3

and Control

(FPGA)

Analog Bus Relays

0 1 2 3

AB0 AB1 AB2 AB3

Com0 Com1

Com2 Com3

SCXIBus Interface

High-

Voltage

Rear

Signal

Connector

Digital

Comm.

Low-

Voltage

Rear

Panel

Signal

Connector

SCXIBus

Connector

SCXI-1335

Terminal

Block

SCXI-1129

Module

B1R0 = Bank 1 Row 0 B1C0 = Bank 1 Column 0

Each row and column consists of two wires. One for source (+) and one for return (–).

Note: The analog bus relays have a built-in safety interlock. For safety reasons, they cannot be closed unless a terminal block is connected.

Figure 2-8. 8

32 Matrix Configuration

Chapter 2 Using the SCXI-1129

××××

16 Matrix Configuration

The 16 × 16 matrix configuration gives you control over the entire switch matrix with no subdivisions. All 256 crosspoints are treated as a contiguous block. This configuration provides an easy way to create a full 256 crosspoint matrix for applications requiring equal rows and columns. Figure 2-9 is a 1-wire representation of the SCXI-1129 configured as a 16 × 16 matrix. The diagram shows connections for a general test setup that connects several instruments to one complex DUT. In this way, you can use the same instrumentation to test many different portions of the DUT. You can access the HVAB at up to four rows at a time. To connect signals to the HVAB, connect the chosen rows to COM0–COM3, then connect COM0–COM3 to AB0–AB3. Refer to Figure 2-10 for the channel names that NI-SWITCH uses.

R10

R11 R12

R13

R14

R15

Source

Meas.

Meas. Meas.

• • •

C15

Figure 2-9. 16× 16 Matrix Test Setup Example

DUT

SCXI-1129 User Manual 2-14 ni.com

Chapter 2 Using the SCXI-1129

C0–C15

R0–R3

R4–R7

R8–R11

R12–R15

16 columns

4rows

16 columns

4rows

16 columns

4rows

16 columns

4rows

SCANADVD

EXTRIGIN

Front Signal

Connector

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

128Kx8SRAM

Scan List Memory

Digital Interface

Calibration EEPROM

Connection Relays

0 1 2 3

and Control

(FPGA)

Analog Bus Relays

0 1 2 3

AB0 AB1 AB2 AB3

Com0 Com1

Com2 Com3

SCXIBus Interface

High-

Voltage

Rear

Signal

Connector

Digital

Comm.

Low-

Voltage

Rear

Panel

Signal

Connector

SCXIBus

Connector

SCXI-1336

Terminal

Block

SCXI-1129

Module

B1R0 = Bank 1 Row 0 B1C0 = Bank 1 Column 0

Each row and column consists of two wires. One for source (+) and one for return (–).

Note: The analog bus relays have a built-in safety interlock. For safety reasons, they cannot be closed unless a terminal block is connected.

Figure 2-10. 16

16 Matrix Configuration

Chapter 2 Using the SCXI-1129

Matrix Expansion

In addition to the configurations discussed above, it is possible to combine modules with the same configuration to create much larger matrixes. You can expand matrix modules through the terminal blocks by connecting columns and/or rows. Figure 2-11 shows an example of an 8 × 64 matrix created by connecting two 8 × 32 matrixes using a matrix expansion cable.

SCXI-1129/SCXI-1336

•

C30

C31

Matrix

Terminal

Block

Boundary

C32 (C0)

C63 (C31)

Cable #1

•

R0R1R2R3R4R5R6

SCXI-1129/SCXI-1336

Cable #2

Expansion

Plug

Figure 2-11. 8× 64 Matrix Schematic

SCXI-1129 User Manual 2-16 ni.com

Chapter 2 Using the SCXI-1129

The matrix expansion methods available for the different terminal blocks are shown in Table 2-2.

Table 2-2.

Terminal Block Matrix Expansion

Terminal Block Expansion Type

SCXI-1333 (4 × 16) Column connection

SCXI-1337 (8 × 16) None

SCXI-1339 (4 × 32) None

SCXI-1334 (4 × 64) Column and row connection

SCXI-1335 (8 × 32) Column and row connection

SCXI-1336 (16 × 16) Column connection

The preferred expansion method is to connect columns using the matrix expansion plug. You can use this plug to daisy-chain module columns across an entire chassis, as shown in Figure 2-12.

Caution

Only daisy-chain terminal blocks of the same type together. Daisy-chaining different types of terminal blocks together can cause damage to the module or to the equipment connected to the module. For example, you can daisy-chain two or more SCXI-1333 terminal blocks; however, do not daisy-chain the SCXI-1333 together with any other type of terminal block.

Chapter 2 Using the SCXI-1129

SCXI POWER

SCXI RESET

SCXI

1 Matrix Expansion Plugs 2 SCXI-1333 Terminal Block

3 Thumbscrews 4 SCXI-1129 Front Connector

Figure 2-12. Example of Daisy-Chained Modules

SCXI-1129 User Manual 2-18 ni.com

Chapter 2 Using the SCXI-1129

The SCXI-1334 and SCXI-1335 terminal blocks also have the ability to expand columns by connecting rows, as shown in Figure 2-13. With these two modes of expansion, you can create very large matrixes.

1 SCXI-1335 1 2 Matrix Expansion Plug 1 3 SCXI-1335 2

4 SCXI-1335 3 5 Matrix Expansion Plug 2

6 SCXI-1335 4 7 Matrix Expansion Cables

Figure 2-13. Example of Column and Row Expansion Using SCXI-1335 Modules

In the 4 × 64, 4 × 16, and 4 × 32 matrixes, you can to use the HVAB to both expand the matrix size and connect instruments to DUTs. By connecting the configuration relays (B0COMx to B3COMx), you can connect the rows of the four 4 × 16 matrixes and the two 4 × 32 matrixes so that a single 4 × 64 matrix is formed. Also, by connecting relays AB0–AB3, you can connect these rows to the HVAB allowing you to connect instruments through the SCXI backplane. This connection means that you can use multiple modules to construct 4 × 128, 4 × 192, and larger matrixes without

Chapter 2 Using the SCXI-1129

the need to daisy-chain terminal blocks. You can also use the 4 × 16 matrix in a similar fashion. You cannot accomplish this connection with other matrix types since the row granularity is greater than four, or in the case of the 4 × 64 matrix, you cannot subdivide it.

To make a larger matrix, such as a 16 × 64 matrix, you must make both column and row expansions. To build a larger matrix, follow these steps:

1. Expand the columns to the target number, 64 in this case, by connecting the rows of the appropriate number of SCXI-1335s (8 ×32matrix), two in this case, using matrix expansion cables. This configuration results in a 8 × 64 matrix block.

2. Expand the rows to the target number, 16 in this case, by connecting the columns of the appropriate number of 8 × 64 matrix blocks, two in this case, using matrix expansion plugs.

Figure 2-13 shows four SCXI-1335s connected to form a 16 × 64 matrix.

Hardware and Software Scanning

The SCXI-1129 provides a very flexible scanning architecture. You have individual control over every crosspoint and configuration relay, which means you can:

• Do random switching

• Do multiplexing

• Use the 4 × 16 matrix banks independently

There are two basic methods of scanning: hardware-timed scanning and software scanning. In hardware-timed scanning, the measurement instrument, such as a DMM, communicates through digital triggering signals to the SCXI-1129. In its simple form, hardware-timed scanning uses one triggering signal to advance the matrix to the next state in the scan. This process is called synchronous scanning.

Note

When using a DMM to control a SCXI chassis, synchronous mode is the only mode

in which the DMM and the SCXI-1129 operate.

Another hardware-timed scanning method is called handshaking. While synchronous scanning requires just one signal from the instrument to the matrix, handshaking requires an additional signal connected from the matrix to the instrument. This additional trigger, Scanner Advanced, notifies the measuring instrument that the matrix has settled and that the next measurement can be made. This method is useful when using

SCXI-1129 User Manual 2-20 ni.com

an SCXI-1129 with external instruments to guarantee that both the measurement instrument and the matrix have settled before taking the next measurement.

The second type of scanning, software scanning, is a method by which matrix connections are initiated through the software. This method requires no trigger connections. Software scanning does not offer the time accuracy of hardware-timed scanning.

Hardware-Timed Scanning

In hardware-timed scanning, the software downloads a list of commands to the SCXI-1129. The software then starts executing the scan list. The scan list executes until reaching a wait for a trigger command. When the SCXI-1129 receives a trigger, the scan list continues to advance until receiving another wait for trigger command. Between waiting for triggers, the switch state of the matrix can be changed. When the matrix has changed state, the scan list can be instructed to send a Scanner Advanced (SCANADVD) signal to the measurement instrument indicating that the system is ready for another measurement to be made.

Hardware-Timed Scanning Using a DMM

When using a DMM to control a chassis, synchronous mode is the only mode in which the DMM and the SCXI-1129 can operate. The DMM issues a trigger to change the matrix configuration at regular intervals. You can program the interval at which the DMM sends triggers; set the interval as follows.

Chapter 2 Using the SCXI-1129

n 1–



n 352 µs×

where n is the number of activated switches.

The module that connects directly to the DMM is referred to as the cabled module. If more SCXI-1129 modules are added to your system, the trigger is bused over the SCXI backplane allowing other modules to be triggered, as shown in Figure 2-14. These additional modules are referred to as non-cabled modules since they do not require you to cable the DMM directly to them.

------------



4ms()debounce time++

Chapter 2 Using the SCXI-1129

Trig 0

Trig 1

•

Trig 6

Trig 7

From

DMM AUX

Front Connector

SCXI-1129

Backplane Connector

SCANADVD SCANADVD SCANADVD

HVABRSC

Front Connector

SCXI-1129

Backplane Connector

Figure 2-14. Cabling a DMM and Using Trig0–Trig7 to Bus the VMC/EXTRIG_1

to a Non-Cabled Module

The SCXI-1129 can accept trigger signals from any of the following sources:

• Rear signal connector

• Front connector

• Software trigger

• Triggers 0–7

Front Connector

SCXI-1129

Backplane Connector

Backplane

Note

Not all trigger lines are supported in all chassis. Make sure that the correct chassis

is chosen for your particular application.

Note

Trig0 - Trig7 refers to ttl0 - ttl7 in NI-SWITCH.

Hardware-Timed Scanning Using External Instruments

When using the SCXI-1129 with an external measurement instrument, you can use either synchronous or handshaking mode to advance though the scan list.

SCXI-1129 User Manual 2-22 ni.com

EXTTRIGIN

From DMM VMC

Chapter 2 Using the SCXI-1129

Synchronous Scanning

In the synchronous scanning mode, the measuring device, such as a DMM, issues a trigger, voltmeter complete (VMC), to advance the matrix scan list at regular intervals. Each interval must be long enough to guarantee that the matrix has fully settled before the next measurement is taken. Refer to

Hardware-Timed Scanning. For example, you can connect the VMC of

your DMM to the SCXI-1129 through a spring terminal labeled EXTTRIGIN on the SCXI-1333 terminal block. You can configure the SCXI-1129 to accept a VMC signal with either rising or falling edges.

If you have more that one SCXI-1129 module, it is not necessary to cable the VMC to each module. You can bus the VMC onto the SCXI backplane (Trig 0 to Trig 7) allowing other modules to be triggered as shown in Figure 2-15.

Trig 0

Trig 1

•

Trig 6

Trig 7

Front Connector

Backplane Connector

SCXI-1129

Front Connector

SCXI-1129

HVABRSC

Backplane Connector

Front Connector

SCXI-1129

Backplane Connector

Figure 2-15. Cabling an External DMM

Handshaking Scanning

The SCXI-1129 supports a handshaking scanning mode. This mode uses the standard VMC/SCANADVD handshaking scheme. In this mode, the matrix responds to every VMC trigger by advancing the matrix to the next state, waiting for the matrix to settle, and then sending a scanner advanced pulse out on a SCANADVD output trigger back to the DMM.

Backplane

Chapter 2 Using the SCXI-1129

For example, you can connect the VMC of the DMM to the SCXI-1129 through a spring terminal labeled EXTRIGIN on the SCXI-1333 terminal block. You must also connect the SCANADVD signal from the SCXI-1333 terminal block to your DMM external trigger input. Refer to Figure 2-2.

If you have more than one module in your system, it is not necessary to cable the VMC to each module. You can bus the VMC onto the SCXI backplane (Trig 0 to Trig 7), allowing other modules to be triggered as showninFigure2-15.

Multimodule Scanning

The SCXI-1129 supports three multimodule operation modes. This enables you to control many SCXI-1129 modules as if they were a single unit.

Chain Triggering

Multimodule scanning on the SCXI-1129 is similar to single-module scanning. When scanning multiple modules, there is a chance of channel contention. In other words, more than one module could be competing for the same channel if switches do not open and close at the right time. You can avoid this problem if you have one module triggering the following module after it has already switched and settled. Below is an example of three SCXI-1129 modules being scanned. The measurement device is receiving the SCANADVD signals as well as sending the VMC signals to the switches.

Example

Module 1 Switches, sends SCANADVD, waits for VMC, sends

trigger to module 2, waits for trigger from module 3.

Module 2 Waits for trigger from module 1, sends SCANADVD,

waits for VMC, sends trigger to module 3.

Module 3 Waits for trigger from module 2, switches, sends

SCANADVD, waits for VMC, sends trigger to module1.

This method allows modules to communicate as to when to start switching as well as telling the measurement device when the switches have settled. This guarantees no channel contentions while switching.

SCXI-1129 User Manual 2-24 ni.com

Chapter 2 Using the SCXI-1129

Wire ORed

In wire ORed operation, you can make more than one module switch at the same time. In this mode, you can connect the SCANADVD signals together as show in Figure 2-16. By doing this, the SCANADVD lines are ORed together so that no scan advance is issued until the last module releases the line. When the last module releases the SCANADVD line, the measurement device receives the signal to take a new measurement. This method also guarantees no channel contentions while switching.

Dummy Entries

This method allows you to control multiple modules by entering dummy entries into the scan lists of the modules. Refer to the NI-SWITCH User Manual section for more information. Take care when using this method to insure that there are no bus or channel contentions when switching between modules.

Chapter 2 Using the SCXI-1129

EXTTRIGIN

from DMM VMC

SCANADVD

To DMM

Front Connector

Cabled SCXI-1129

Backplane Connector

VMC SCANADVD

Trig 0

Trig 1

•

Trig 6

Trig 7

Software Scanning

Front Connector

SCXI-1129

HVABRSC

Backplane Connector

Front Connector

SCXI-1129

Backplane Connector

Backplane

Figure 2-16. Wire ORed Operation

Unlike hardware-timed scanning, software scanning does not use hardware-generated triggers. In software scanning, a list of matrix configurations, kept by the software, is scanned by selecting the desired configuration on the SCXI-1129 and making the required measurements. Refer to the NI-SWITCH Software User Manual for more information on software scanning.

Independent Switch Control

You can independently control all 276 relays on the SCXI-1129, including connection relays and HVAB relays. To close/open the relays, refer to them by their appropriate name. Refer to Table 2-3.

Note

Independent switch control is valid only in the 4 × 16 configuration.

SCXI-1129 User Manual 2-26 ni.com

Chapter 2 Using the SCXI-1129

Table 2-3.

Relay Names

Matrix Relays

Bank 1 Bank 2 Bank 3 Bank 4

B1R0C0... B1R0C15

B1R1C0... B1R1C15

B1R2C0... B1R2C15

B1R3C0... B1R3C15

B2R0C0... B2R0C15

B2R1C0... B2R1C15

B2R2C0... B2R2C15

B2R3C0... B2R3C15

B3R0C0... B3R0C15

B3R1C0... B3R1C15

B3R2C0... B3R2C15

B3R3C0... B3R3C15

B4R0C0... B4R0C15

B4R1C0... B4R1C15

B4R2C0... B4R2C15

B4R3C0... B4R3C15

Connection

Relays

B1COM0... B1COM3

B2COM0... B2COM3

B3COM0... B3COM3

B4COM0... B4COM3

Analog Bus

Relays

AB0

AB1

AB2

AB3

Specifications

This appendix lists the specifications for the SCXI-1129 modules. These specifications are typical at 25 °C unless otherwise noted.

Input Characteristics

Number of 2-wire crosspoints................ 256

Matrix type............................................. Quad 4 × 16

Common-mode voltage

Channel to channel.......................... 150 V

Channel to earth .............................. 150 V

Maximum allowed voltage

AC................................................... 150 V

DC................................................... 150 VDC

Maximum switching capacity

DC................................................... 1 A at 30 V

AC................................................... 0.25 A at 150 V

rms

or DC

Maximum switching power

per crosspoint ......................................... 37.5 VA, 30 W

Maximum path ....................................... < 1Ω

Transfer Characteristics

Thermal EMF (differential) ...................< 9 µV

Maximum frequency bandwidth (50 Ω termination)

Worst-case path............................... 10 MHz

Appendix A Specifications

Channel to channel crosstalk (50 Ω termination)

10 kHz .............................................< –80 dB

100 kHz ...........................................< –68 dB

1 MHz..............................................< –53 dB

Dynamic Characteristics

Maximum operating speed .....................125 cycles/s

Relay operate time (at 20 °C).................4 ms max

Relay release time (at 20 °C) .................4 ms max

Expected life

Mechanical (at 180 cpm).................5 × 10

Electrical at maximum load.............1 × 10

Trigger Characteristics

Scanner advanced pulsewidth.................1 µs to 64 µs

operations

6-bit programmable

Scanner advanced delay..........................1 µs to 64 µs

6-bit programmable

External trigger input pulsewidth ...........200 ns

Stability

Recommended warm-up time.................5 minutes

Physical

Dimensions .............................................3.0 by 17.2 by 20.3 cm

(1.2by6.9by8.0in.)

Environment

Operating temperature ......................... 0 to 50 °C

Storage temperature............................. –20 to 70 °C

Relative humidity ...................................10 to 90% noncondensing

SCXI-1129 User Manual A-2 ni.com

Safety

Designed in accordance with IEC-61010-1, UL 3111-1, and CAN/CSA C22.2 No. 1010.1 for electrical measuring and test equipment

Approved at altitudes up to 2000 m.

Installation Category I

Pollution Degree 2

Indoor use only

Emissions and Immunity

EMC/EMI............................................... CE, C-Tick and FCC Part 15

Electrical emissions................................ EN 55011 Class A at 10 m;

Electrical immunity................................ Evaluated to EN 61326:1998,

Appendix A Specifications

(Class A) Complaint

FCC Part 15A above 1 GHz

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 product family. Select the appropriate product family, followed by your product, and a link to the DoC (in Adobe Acrobat format) appears. Click the Acrobat icon to download or read the DoC.

ni.com/hardref.nsf. This website lists the DoCs by

Accessories

This appendix lists various National Instruments products you can use with your SCXI-1129 module.

• The SCXI-1333 terminal block converts the switch card to a

• The SCXI-1334 terminal block converts the switch card to a

• The SCXI-1335 terminal block converts the switch card to a

• The SCXI-1336 terminal block converts the switch card to a

• The SCXI-1337 terminal block converts the switch card to a

• The SCXI-1339 terminal block converts the switch card to a

• Use the 1-slot, 2-slot, and 8-slot HVAB-backplane adapters to connect

• Use a SH9MD-9MD cable to connect digital communication lines of

4 × 16 matrix configuration.

4 ×64matrix configuration.

8 ×32matrix configuration.

16 ×16matrix configuration.

8 ×16matrix configuration.

4 ×32matrix configuration.

the HVAB of the SCXI-1129 to the DMM. You can also use them to establish HVAB connections across multiple SCXI-1129 modules or SCXI chassis. 2-slot and 8-slot HVAB-backplane adapters have four connectors on the external side—two HVAB connectors, one digital input in (AUXIN) connector, and one digital input out (AUXOUT) connector. The 1-slot SCXI-1357 has only HVAB connectors. The purpose of the AUXIN connector is to cable the digital communication signals from the DMM to the SCXI-1129 and finally to the SCXI chassis backplane. The AUXOUT connector connects the DMM communication signals to the next chassis if one is present.

the DMM to the SCXI-1129 AUXOUT connector. You can also use this cable to carry signals to the next chassis.

Appendix B Accessories

• Use an HV8-BAN4 cable to connect the HVAB of the SCXI-1129(s) to the DMM analog bus.

• Use 8-position HVAB plugs to interconnect the HVAB of the HVAB-backplane adapters.

Contact National Instruments for more specific information about these products.

SCXI-1129 User Manual B-2 ni.com

SCXI-1129 Block Diagram

Figure C-1 shows the SCXI-1129 high-density matrix module block diagram. All row and column connections, as well as the triggers, are accessed through the 180-pin connector on the front of the module. The internal module structure is a quad, 4 × 16 column matrix. The matrix can access the high-voltage analog backplane (HVAB) through the matrix connection relays and the high-voltage bus relays.

Front

Signal

Connector

16x16

8x32 4x32 8x16 4x16

B1R0 – B1R3

B2R0 – B2R3

B3R0 – B3R3

SCANADV

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

4 x 16 Matrix

Relays

Drive Circuitry (4 x 64 Lines)

Controlled by FPGA

EXTRIGIN

Matrix

Connection

Relays

Matrix

Connection

Relays

Matrix

Connection

Relays

Matrix

Connection

Relays

128Kx8SRAM

Scan List Memory

Digital Interface

and Control

(FPGA)

Calibration EEPROM

High-

Voltage

Bus

Relays

with

Safety

Interlock

Com 0 Com 1 Com 2 Com 3

SCXIBus

Interface

AB0 – AB3

High-Voltage

Rear Panel

Signal

Connector

Digital

Comm.

Low-Voltage

Rear Panel

Signal

Connector

SCXIBus

Connector

Figure C-1. SCXI-1129 Block Diagram

SCXI-1129 Front Connector

This appendix contains a connector diagram for the SCXI-1129 switch modules. The diagram also show the signal names that are used.

When you connect a custom terminal block or cable it is important that you incorporate the safety interlock scheme into the terminal block/cable. The safety interlock disconnects the high-voltage bus from the matrix if the terminal block or matrix configuration module is removed. This action prevents potentially hazardous voltages from appearing on exposed front panel connectors. You can incorporate the safety interlock scheme by connecting the INTERLOCK signal to the +5 V signal. Refer to Table D-1 for descriptions of signal names.

Appendix D SCXI-1129 Front Connector

Number

Signal

Name

TBEECLK TBEEOUT

TBEEEN

SCANADV

EXTRIG1

B2C15– B2C15+ B2C14– B2C14+ B2C13– B2C13+ B2C12– B2C12+ B2C11– B2C11+ B2C10– B2C10+

B2C9– B2C9+ B2C8– B2C8+ B2C7– B2C7+

B2C6–

B2C6+ B2C5– B2C5+ B2C4– B2C4+ B2C3– B2C3+ B2C2– B2C2+ B2C1– B2C1+ B2C0– B2C0+

2R3– 2R3+ 2R2– 2R2+ 2R1– 2R1+ 2R0–

2R0+ B1C15– B1C15+ B1C14– B1C14+ B1C13– B1C13+ B1C12– B1C12+ B1C11– B1C11+ B1C10– B1C10+

B1C9– B1C9+ B1C8– B1C8+ B1C7– B1C7+ B1C6– B1C6+ B1C5– B1C5+ B1C4– B1C4+ B1C3– B1C3+ B1C2– B1C2+ B1C1– B1C1+ B1C0– B1C0+

1R3–

1R3+

1R2–

1R2+

1R1–

1R1+

1R0–

1R0+

ABC D

NC NC NC NC NC

Column

Signal

GND BMOIS* NC INTERLOCK +5 V NC NC NC NC NC B4C15– B4C15+ B4C14– B4C14+ B4C13– B4C13+ B4C12– B4C12+ B4C11– B4C11+ B4C10– B4C10+ B4C9– B4C9+ B4C8– B4C8+ B4C7– B4C7+ B4C6– B4C6+ B4C5– B4C5+ B4C4– B4C4+ B4C3– B4C3+ B4C2– B4C2+ B4C1– B4C1+ B4C0– B4C0+ 4R3– 4R3+ 4R2– 4R2+ 4R1– 4R1+ 4R0– 4R0+ B3C15– B3C15+ B3C14– B3C14+ B3C13– B3C13+ B3C12– B3C12+ B3C11– B3C11+ B3C10– B3C10+ B3C9– B3C9+ B3C8– B3C8+ B3C7– B3C7+ B3C6– B3C6+ B3C5– B3C5+ B3C4– B3C4+ B3C3– B3C3+ B3C2– B3C2+ B3C1– B3C1+ B3C0– B3C0+ 3R3– 3R3+ 3R2– 3R2+ 3R1– 3R1+ 3R0– 3R0+

Name

Figure D-1. SCXI-1129 Front Connector

SCXI-1129 User Manual D-2 ni.com

Appendix D SCXI-1129 Front Connector

Table D-1.

Front Connector Signal Description

Signal Name Typ e Description

+5 V Output +5 VDC isolated source—powers the EEPROM

and the INTERLOCK signal

GND Output Ground

EXTRIGIN Input External Trigger Input—trigger from an

instrument to advance the switch matrix to the next state in the scan list

SCANADVD Output Scanner Advanced—trigger to an instrument that

indicates the switch matrix has advanced to the next state in the scan list

TBEEEN Input Terminal block EEPROM chip select signal

TBEEOUT Output Terminal block EEPROM data output signal

TBEECLK Input Terminal block EEPROM clock input signal

BMOSI* Input Terminal block EEPROM data input signal

1R0+ to 1R3+

I/O Bank 1, matrix row connections

1R0– to 1R3–

2R0+ to 2R3+

I/O Bank 2, matrix row connections

2R0– to 2R3–

3R0+ to 3R3+

I/O Bank 3, matrix row connections

3R0– to 3R3–

4R0+ to 4R3+

I/O Bank 4, matrix row connections

4R0– to 4R3–

B1C0+ to B1C15+

I/O Bank 1, matrix column connections

B1C0– to B1C15–

B2C0+ to B2C15+

I/O Bank 2, matrix column connections

B2C0– to B2C15–

B3C0+ to B3C15+

I/O Bank 3, matrix column connections

B3C0– to B3C15–

B4C0+ to B4C15+

I/O Bank 4, matrix column connections

B4C0– to B4C15–

Common Questions

This appendix addresses common questions you may have while using your SCXI-1129 module.

How fast can I scan with the SCXI-1129 module?

The fastest scan rate for the SCXI-1129 is 125 scans/s. Typically, when using a DMM to make accurate measurements, the DMM requires hundreds of milliseconds. Consequently, the DMM becomes the limiting factor in determining the scan rate.

What should I do if the software detects the module, but the switches do not switch?

• Verify that the switches do not switch. Close your application program and then launch the soft front panel as described in the Set up and Test document you received with your kit. The soft front panel shows the state of each relay switch on the module. Try closing and opening the switches using the low level switch functions.

• Check the return codes of the NI-SWITCH operation to ensure that there are no errors (negative values) or warnings (positive values). You can also use the NI-Spy utility, which is installed with NI-SWITCH, to check for error codes.

• Finally, verify that your program is correct. For reference, see the examples described in the NI-SWITCH Software User Manual.The NI-SWITCH driver also ships with several examples in source code. Compare your algorithm to the ones in the examples.

What should I do if scanning does not work in the handshaking mode with a third-party DMM?

• Ensure that you have configured the SCXI-1129 and the instrument to correctly route all the trigger lines. The output trigger of the instrument should connect to the trigger input of the SCXI-1129. In addition, make sure the scanner advanced trigger of the SCXI-1129 connects to the input trigger of the instrument.

• If you use the SCXI-1129 to initiate the scan, make sure the DMM is waiting for a trigger before enabling scanning on the SCXI-1129.

Appendix E Common Questions

• If you use the DMM to initiate the scan, enable scanning on the SCXI-1129 before configuring the DMM to start taking measurements. This is the recommended method for scanning.

• Be sure to check the return codes of the NI-SWITCH operation to ensure that there are no errors (negative values) or warnings (positive values). You can also use the NI-Spy utility, which is installed with NI-SWITCH, to check for error codes.

• Verify that your program is correct. For reference, see the examples described in the NI-SWITCH Software User Manual.TheNI-SWITCH driver also ships with several examples in source code. Compare your algorithm to the ones in the examples.

Do I need to program the SCXI-1129 myself?

The SCXI-1129 comes with the NI-SWITCH driver software that exports the full functionality of the module. NI-SWITCH handles the complex issues of register writes to the module and operating system interfacing.

Can I plug a non SCXI-1129 module into a slot that has a high-voltage analog backplane?

Yes. You can plug in a module that does not support the HVAB. The non-SCXI-1129 module does not connect to the HVAB or the digital communication lines on the HVAB backplane adapter.

Must I install the complete high-voltage analog backplane?

No. You do not have to install the complete backplane. There can be instances where it is necessary for a non-SCXI-1129 module to communicate to a device using a different backplane adapter. For example, using a separate digital module in parallel mode. In this case, you can remove that segment of the HVAB although it is important that you do not remove the section of the HVAB that is controlling the chassis.

Can I use the HVAB for matrix expansion?

Yes. With the module AB0–AB3 relays connected, you can use the HVAB backplane to connect the matrix rows together. For example, you can create a4× 256 matrix in a 4-slot chassis. First, install four SCXI-1129s into the chassis. Now you have four independent 4 × 64 matrixes. Install the 2-slot HVAB-backplane adapter behind slots 3 and 4. This connects the rows between slots 3 and 4 creating a 4 × 128 matrix. Next, install another 2-slot HVAB-backplane adapter between slots 1 and 2 to create a second 4 × 128 matrix. Finally, connect the two, 2-slot adapters with an 8-position

SCXI-1129 User Manual E-2 ni.com

Appendix E Common Questions

HVAB plug. You now have a 4 × 256 matrix that uses the backplane to automatically connect rows. You can use either the SCXI-1333 quad 4 × 16, or SCXI-1334 4 × 64 terminal blocks to connect to the matrix columns in this configuration.

Technical Support Resources

Web Support

National Instruments 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 Developer Zone

ni.com

The NI Developer Zone at building measurement and automation systems. At the NI Developer Zone, you can easily access the latest example programs, system configurators, tutorials, technical news, as well as a community of developers ready to share their own techniques.

Customer Education

National Instruments provides a number of alternatives to satisfy your training needs, from self-paced tutorials, videos, and interactive CDs to instructor-led hands-on courses at locations around the world. Visit the Customer Education section of syllabi, training centers, and class registration.

System Integration

If you have time constraints, limited in-house technical resources, or other dilemmas, you may prefer to employ consulting or system integration services. You can rely on the expertise available through our worldwide network of Alliance Program members. To find out more about our Alliance system integration solutions, visit the System Integration section of

ni.com

ni.com/zone

ni.com

is the essential resource for

for online course schedules,

Appendix F Technical Support Resources

Worldwide Support

National Instruments 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 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 National Instruments corporate. Phone numbers for our worldwide offices are listed at the front of this manual.

ni.com

. Branch office Web sites provide

SCXI-1129 User Manual F-2 ni.com

Glossary

Prefix Meanings Value

n- nano- 10

µ- micro- 10

m- milli- 10

k- kilo- 10

M- mega- 10

G- giga- 10

Symbols

° degrees

Ω ohms

% percent

–9

– 6

–3

± plus or minus

A amperes

AC alternating current

ADE application development environment

bus the group of conductors that interconnect individual circuitry in a computer.

Typically, a bus is the expansion vehicle to which I/O or other devices are connected.

Glossary

CCelsius

channel pin or wire lead on the multiplexer to which you apply or from which you

read the analog or digital signal. Signals can be single-ended or differential.

DC direct current

device a plug-in board, card, or pad that can contain multiple channels and

conversion devices. Some examples of devices are computers, multimeters, multiplexers, oscillators, operator interfaces, and counters.

digital multimeter a multifunction meter used to make measurements such as voltage, current,

resistance frequency, temperature, and so on

DMM See digital multimeter.

drivers/driver software software that controls a specific hardware device such as a switch card

external trigger a voltage pulse from an external source that triggers an event such as

A/D conversion

handshaking the use of two trigger lines between two instruments, such as a switch and

a DMM, to synchronize their actions

HVAB high-voltage analog bus

Hz hertz—the number of scans read or updates written per second

SCXI-1129 User Manual G-2 ni.com

Glossary

I/O input/output—the transfer of data to/from a computer system involving

communications channels, operator interface devices, and/or data acquisition and control interfaces

in. inches

matrix superset of multiplexer; consists of connected rows and columns that

allows for a direct connection from any row to any column

multiplexer a switching device with multiple inputs that sequentially connects each

of its inputs to its output, typically at high speeds, in order to measure several signals with a single analog input channel

NI-SWITCH an IVI-based instrument driver that supports the National Instruments line

of switch cards

PXI PCI with extensions for instrumentation

relay a switch that connects or disconnects the signal to a common through the

physical movement of a metal arm

s seconds

scan the data acquisition of signals connected to multiple channels of a

multiplexer. Typically, the measurement device uses a trigger to advance the multiplexer to the next channel in the scan.

Glossary

scan list a list of channels supplied to NI-SWITCH that indicates the order in which

channels will be scanned

SCANADVD scanner advance signal—in handshake scanning this signal is generated by

the switching module to let the instrument or DMM know that the switching module has finished settling at the current channel

scanner advanced trigger

SCXI Signal Conditioning eXtensions for Instrumentation—the National

soft front panel a graphical program included with NI-SWITCH that you can use to

the trigger generated by the switch card when scanning. The trigger occurs after the switch card has closed a switch and the switch has settled.

Instruments product line for conditioning low-level signals within an external chassis near sensors so only high-level signals are sent to DAQ devices in the noisy PC environment

interactively control the switch

terminal block an accessory containing wire connection points, typically screw terminals

trigger any event that causes or starts some form of data capture

V volts

VDC volts, direct current

VMC voltmeter complete signal—during synchronous or handshake scanning

with an external DMM this signal advances the switching module to the next channel. It is called External Trigger In (EXT_TRIG_IN) on the SCXI-1331 terminal block.

Wwatts

wire data path between nodes

SCXI-1129 User Manual G-4 ni.com

Index

Numbers

1R0+ to 1R3+ signal (table), D-3 1R0– to 1R3– signal (table), D-3 2 × 4 two-wire matrix configuration (figure), 2-1 2R0+ to 2R3+ signal (table), D-3 2R0– to 2R3– signal (table), D-3 3R0+ to 3R3+ signal (table), D-3 3R0– to 3R3– signal (table), D-3 4 × 16 matrix configuration, 2-4 to 2-5 4 × 32 matrix configuration, 2-6 to 2-7 4 × 64 matrix configuration, 2-10 to 2-11 4R0+ to 4R3+ signal (table), D-3 4R0– to 4R3– signal (table), D-3 +5 V signal (table), D-3 8 × 16 matrix

configuration, 2-8 to 2-9 matrix expansion (figure), 2-16

8 × 32 matrix configuration, 2-12 to 2-13 16 × 16 matrix configuration, 2-14 to 2-15

accessories, B-1 to B-2 adding modules manually, 1-24 auto-detecting modules, 1-23

B1C0+ to B1C15+ signal (table), D-3 B1C0– to B1C15– signal (table), D-3 B2C0+ to B2C15+ signal (table), D-3 B2C0– to B2C15– signal (table), D-3 B3C0+ to B3C15+ signal (table), D-3 B3C0– to B3C15– signal (table), D-3 B4C0+ to B4C15+ signal (table), D-3 B4C0– to B4C15– signal (table), D-3

block diagram of SCXI-1129, C-1 BMOSI* signal (table), D-3

cables,B-1toB-2 chain triggering, multimodule scanning, 2-24 common questions, E-1 to E-3 configuration and self-test. See also installation.

auto-detecting modules, 1-23 manually adding modules, 1-24 possible configurations (table), 1-1 running Measurement & Automation utility

(MAX),1-22to1-23 configuration of matrix. See matrix operation. connector. See front connector. conventions used in manual, vi customer education, F-1

DAQ devices

accessing SCXI-1129 through other SCXI

modules, 1-19 to 1-20

PXI-1010 chassis, 1-21

PXI-1011 chassis, 1-21 digital multimeters. See DMMs. DMMs

connecting external DMMs to SCXI-1129,

1-21 to 1-22

connecting SCXI-1129 in multichassis

system, 1-10 to 1-16

4-slot and 4-slot multichassis

configuration, 1-10 to 1-12

4-slot and 12-slot multichassis

configuration, 1-12 to 1-14

12-slot and 12-slot multichassis

configuration, 1-14 to 1-16

Index

connecting SCXI-1129 in PXI-1010

chassis, 1-16 to 1-17

DMM in PXI slot 8, 1-17 DMM in PXI slots 1 through 7,

1-16 to 1-17

connecting SCXI-1129 in PXI-1011

chassis

DMM in PXI slot 4, 1-18 DMM in PXI slots 1 through 3, 1-18

connecting SCXI-1129 in single chassis

system, 1-7 to 1-10

items required, 1-7 single 4-slot chassis

configuration, 1-8 to 1-9

single 12-slot chassis

configuration, 1-9 to 1-10

handshaking mode fails to work with

third-partyDMM,E-1toE-2

hardware-timed scanning, 2-21 to 2-22 dummy entries, multimodule scanning, 2-25 dynamic characteristics, SCXI-1129, A-2

environment specifications, A-2 to A-3 external DMMs, connecting to SCXI-1129,

1-21 to 1-22

external instruments in hardware-timed

scanning

handshaking scanning mode, 2-23 to 2-24

synchronous scanning mode, 2-23 EXT_TRIG_IN signal (table), D-3

front connector, D-1 to D-3

pin assignments (figure), D-1

signal descriptions (table), D-3

GND signal (table), D-3

handshaking scanning mode

description, 2-23 to 2-24 failstoworkwiththird-party

DMM,E-1toE-2 hardware installation. See installation. hardware-timed scanning, 2-21 to 2-24

handshake scanning, 2-23 to 2-24 overview, 2-21 synchronous scanning, 2-23 using DMM, 2-21 to 2-22 using external instruments, 2-22 to 2-24

HVAB (high-voltage analog bus) backplane

adapters

common questions about, E-2 to E-3 connecting SCXI-1129 to DMM or other

modules, B-1

overview, 1-1

independent switch control

opening/closing relays, 2-26

relay names (table), 2-27 input characteristics, SCXI-1129, A-1 installation, 1-3 to 1-22. See also

configuration and self-test.

connecting SCXI-1129 to DMM in

multichassis system, 1-10 to 1-16

4-slot and 4-slot multichassis

configuration, 1-10 to 1-12

4-slot and 12-slot multichassis

configuration, 1-12 to 1-14

12-slot and 12-slot multichassis

configuration, 1-14 to 1-16

connecting SCXI-1129 to DMM in

PXI-1010chassis,1-16to1-17

DMM in PXI slot 8, 1-17 DMM in PXI slots 1 through 7,

1-16 to 1-17

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Index

connecting SCXI-1129 to DMM in

PXI-1011 chassis, 1-17 to 1-18

DMM in PXI slot 4, 1-18 DMM in PXI slots 1 through 3, 1-18

connecting SCXI-1129 to DMM in single

chassissystem,1-7to1-10

items required, 1-7 single 4-slot chassis

configuration, 1-8 to 1-9

single 12-slot chassis

configuration, 1-9 to 1-10

connecting SCXI-1129 to external DMM,

1-21 to 1-22

DAQ devices

accessing SCXI-1129 using DAQ

device, 1-19 to 1-20 PXI-1010 chassis, 1-21 PXI-1011 chassis, 1-21

installing SCXI-1129 into SCXI chassis,

1-5to1-7 safety information, 1-3 to 1-5 software installation, 1-2 to 1-3 unpacking SCXI-1129, 1-5

manually adding modules, 1-24 matrix operation, 2-1 to 2-20

configurations

2 × 4 two-wire matrix configuration

(figure), 2-1

4 × 16 matrix configuration,

2-4to2-5

4 × 32 matrix configuration,

2-6to2-7

4 × 64 matrix configuration,

2-10 to 2-11

8 × 16 matrix configuration,

2-8to2-9

8 × 32 matrix configuration,

2-12 to 2-13

16 × 16 matrix configuration,

2-14 to 2-15 terminal block example (figure), 2-3 terminal block matrix configuration

(table), 2-2

matrix expansion, 2-16 to 2-20

8 × 64 matrix schematic

(figure), 2-16 column and row expansion using

SCXI-1335 modules (figure), 2-19 daisy-chained modules (figure), 2-18 terminal blocks (table), 2-17

overview, 2-1 to 2-2

Measurement & Automation utility (MAX),

1-22 to 1-23

multichassis system, installing. See

installation.

multimodule scanning, 2-24 to 2-26

chain triggering, 2-24 dummy entries, 2-25 wire ORed, 2-25, 2-26

National Instruments DMM. See DMMs. NI Developer Zone, F-1 NI-SWITCH software

installation, 1-2 to 1-3 programming SCXI-1129, E-2

physical specifications, A-2 pin assignments for front connector (figure),

D-1

PXI-1010 chassis

connecting with SCXI-1129, 1-16 to 1-17

DMM in PXI slot 8, 1-17 DMM in PXI slots 1 through 7,

1-16 to 1-17

using DAQ device, 1-21

Index

PXI-1011 chassis

connecting with SCXI-1129, 1-17 to 1-18

DMM in PXI slot 4, 1-18 DMM in PXI slots 1 through 3, 1-18

using DAQ device, 1-21

questions about SCXI-1129, E-1 to E-3

relay names (table), 2-27

safety information, 1-3 to 1-5 safety specifications, A-3 SCANADVD signal

description (table), D-3 handshaking scanning, 2-23 to 2-24 hardware-timed scanning, 2-21

scanning,2-20to2-27

hardware-timed scanning, 2-21 to 2-24

handshake scanning, 2-23 to 2-24 overview, 2-21 synchronous scanning, 2-23 using DMM, 2-21 to 2-22 using external instruments,

2-22 to 2-24 independent switch control, 2-26 to 2-27 multimodule scanning, 2-24 to 2-26

chain triggering, 2-24 dummy entries, 2-25

wire ORed, 2-25 overview, 2-20 to 2-21 scan rate, E-1 software scanning, 2-26

SCXI chassis, installing SCXI-1129 into. See

installation.

SCXI-1129

accessories, B-1 to B-2 block diagram, C-1 common questions, E-1 to E-3 front connector, D-1 to D-3 overview, 1-1 to 1-2

specifications, A-1 to A-3 self-test. See configuration and self-test. signal descriptions for front connector

(table), D-3

single-chassis system, installing. See

installation. software installation, 1-2 to 1-3 software scanning, 2-26 specifications, A-1 to A-3

dynamic characteristics, A-2 environment, A-2 to A-3 input characteristics, A-1 physical, A-2 safety, A-3 stability, A-2 transfer characteristics, A-1 to A-2

trigger characteristics, A-2 stability specifications, A-2 switches do not switch, E-1 synchronous scanning mode, 2-23 system integration, by National Instruments,

F-1

TBEECLK signal (table), D-3 TBEEEN signal (table), D-3 TBEEOUT signal (table), D-3 technical support resources, F-1 to F-2 terminal blocks

daisy chaining

example (figure), 2-18 possible damage (caution), 2-17

SCXI-1129 User Manual I-4 ni.com

Index

matrix configuration

possible terminal blocks (table), 2-2 terminal block example (figure), 2-3

matrix expansion

column and row expansion

(figure), 2-19

methods (table), 2-17

terminal blocks compatible with

SCXI-1129, B-1

transfer characteristics, SCXI-1129,

A-1 to A-2 trigger characteristics, SCXI-1129, A-2 troubleshooting problems, E-1 to E-3

Web support from National Instruments, F-1 wire ORed multimodule scanning

description, 2-25 example (figure), 2-26

Worldwide technical support, F-2

National Instruments SCXI-1129 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Support

Worldwide Technical Support and Product Information

National Instruments Corporate Headquarters

Worldwide Offices

Important Information

Warranty

Copyright

Trademarks

WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS

Compliance

Conventions

Contents

Installing the Software

Safety Information

Unpacking

Installing the Hardware

Installing the SCXI-1129 Module into the SCXI Chassis

DMM in PXI Slots 1 through 7 Configuration

DMM in PXI Slot 8 Configuration

Connecting the SCXI-1129 to the DMM in the PXI-1011 Chassis

DMM in PXI Slots 1 through 3 Configuration

DMM in PXI Slot 4 Configuration

UsingaDAQDeviceonaPXI-1010Chassis

UsingaDAQDeviceonaPXI-1011Chassis

Connecting the SCXI-1129 to an External DMM

Manually Adding Modules

Operating as a Matrix

Configurations

Matrix Expansion

Hardware and Software Scanning

Hardware-Timed Scanning

Hardware-Timed Scanning Using a DMM

Hardware-Timed Scanning Using External Instruments

Multimodule Scanning

Chain Triggering

Example

Wire ORed

Dummy Entries

Software Scanning

Independent Switch Control

Input Characteristics

Transfer Characteristics

Dynamic Characteristics

Trigger Characteristics

Stability

Physical

Environment

Safety

Emissions and Immunity

Glossary

Symbols

Index

Numbers