NI PXI-8140RT Series User manual

PXI™
PXI-8140RT Series
User Manual
PXI-8140RT Series User Manual
July 2001 Edition
Part Number 323019A-01

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For further support information, see the Technical Support Resources appendix. To comment on the
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Copyright ©2001 National Instruments Corporation. All rights reserved.

Important Information
Warranty
The PXI-8140RT Series of embedded PXI computers are warranted against defects in materials and workmanship for a period of one year from
the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that
proves to be defective during the warranty period. This warranty includes parts and labor.
The media on which you receive National Instruments software are warranted not to fail to execute programming instructions, due to defects
in materials and workmanship, for a period of 90 days from date of shipment, as evidenced by receipts or other documentation. National
Instruments will, at its option, repair or replace software media that do not execute programming instructions if National Instruments receives
notice of such defects during the warranty period. National Instruments does not warrant that the operation of the software shall be
uninterrupted or error free.
A Return Material Authorization (RMA) number must be obtained from the factory and clearly marked on the outside of the package before
any equipment will be accepted for warranty work. National Instruments will pay the shipping costs of returning to the owner parts which are
covered by warranty.
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.
EXCEPT AS SPECIFIED HEREIN,NATIONAL INSTRUMENTS MAKES NO WARRANTIES,EXPRESS OR IMPLIED,AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.CUSTOMER’S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF
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,PROFITS,USE OF PRODUCTS,OR INCIDENTAL OR CONSEQUENTIAL DAMAGES,EVEN IF ADVISED OF THE POSSIBILITY
THEREOF. This limitation of the liability of National Instruments will apply regardless of the form of action, whether in contract or tort, including
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.
Copyright
Under the copyright laws, this publication may not be reproduced or transmitted 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
CVI™,LabVIEW
™, National Instruments™,NI ™,ni.com ™, NI-488.2™, NI-488.2M™, NI-DAQ™, NI-VISA™,andPXI ™are 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.

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 for more information.
FCC/DOC Warnings
This equipment generates and uses radio frequency energy and, if not installed and used in strict accordance with the instructions
in this manual and the CE Mark Declaration of Conformity**, may cause interference to radio and television reception.
Classification requirements are the same for the Federal Communications Commission (FCC) and the Canadian Department
of Communications (DOC).
Changes or modifications not expressly approved by National Instruments could void the user’s authority to operate the
equipment under the FCC Rules.
Class A
Federal Communications Commission
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated
in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct
the interference at his own expense.
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.
Compliance to EU Directives
Readers in the European Union (EU) 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.
To obtain the DoC for this product, click Declaration of Conformity at ni.com/hardref.nsf/. This web site lists the DoCs
by product family. Select the appropriate product family, followed by your product, and a link to the DoC appears in Adobe
Acrobat format. Click the Acrobat icon to download or read the DoC.
* 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.

©National Instruments Corporation vii PXI-8140RT Series User Manual
Contents
About This Manual
How to Use This Documentation Set ............................................................................ix
Conventions ...................................................................................................................ix
Related Documentation..................................................................................................x
Chapter 1
Introduction
Overview........................................................................................................................1-1
Hardware Description ....................................................................................................1-3
PXI-8140RT Series Design .............................................................................1-3
PXI-8140RT Series Models ............................................................................1-3
Memory ...........................................................................................................1-3
Watchdog Timer..............................................................................................1-3
System Slot Functionality................................................................................1-4
Custom Application-Specific Interface Chips.................................................1-4
Front Panel Features ........................................................................................1-4
Optional Equipment.......................................................................................................1-5
National Instruments Software ......................................................................................1-5
Chapter 2
PXI-8140RT Series Configuration and Installation
Default Settings..............................................................................................................2-1
Installing CompactFlash Memory .................................................................................2-3
Configuring the PXI-8140RT Series .............................................................................2-4
Installed System RAM ....................................................................................2-4
System CMOS.................................................................................................2-4
Serial IRQ, INTP, and INTS ...........................................................................2-5
Installing the PXI-8140RT Series..................................................................................2-7
How to Remove the Unit from the PXI Mainframe ........................................2-9
Appendix A
Specifications
Appendix B
LED Indicators and Switch Options

Contents
PXI-8140RT Series User Manual viii ni.com
Appendix C
Front Panel and Connectors
Appendix D
Technical Support Resources
Glossary
Index

©National Instruments Corporation ix PXI-8140RT Series User Manual
About This Manual
This manual contains detailed instructions for installing and configuring
your National Instruments PXI-8140RT Series embedded PXI computer.
The PXI-8140RT Series includes all models of the PXI-8145RT and
PXI-8146RT embedded PXI computers.
How to Use This Documentation Set
This manual, the PXI-8140RT Series User Manual, describes how to
change the installation or configuration from the defaults and use the
hardware.
If you ordered either LabVIEW or LabWindows/CVI, you received
full documentation along with a configuration disk to unlock and access
these application programming environments, which are already installed
on your hard drive.
Conventions
The following conventions appear in this manual:
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.
This icon denotes a warning, which advises you of precautions to take to
avoid being electrically shocked.
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,

About This Manual
PXI-8140RT Series User Manual x ni.com
programs, subprograms, subroutines, device names, functions, operations,
variables, filenames and extensions, and code excerpts.
PXI-8140RT Series The terms PXI-8140RT Series and PXI-8140RT refer to a series of 3U PXI
controllers. Currently, this series consists of the PXI-8145RT and
PXI-8146RT.
Related Documentation
The following documents contain information that you might find helpful
as you read this manual:
•PICMG 2.0 R2.1 CompactPCI Specification, PCI Industrial
Computers Manufacturers Group
•IEEE Standard P1284.1-1997 (C/MM) Standard for Information
Technology for Transport Independent Printer/System Interface
•PCI Local Bus Specification, Revision 2.1, PCI Special Interest Group
•PXI Specification, Revision 2.0, National Instruments Corporation
•Serialized IRQ Support for PCI Systems Specification, Revision 6.0,
Compaq Computer et al.

©National Instruments Corporation 1-1 PXI-8140RT Series User Manual
1
Introduction
This chapter describes the PXI-8140RT Series of embedded PXI
computers and lists optional equipment and software.
Overview
The PXI-8140RT Series consists of the PXI-8145RT and the PXI-8146RT
PXI system controllers, as shown in the following illustrations. Refer to
Appendix C, Front Panel and Connectors, to determine the purpose for
each connector on the module. Figure 1-1 shows a PXI-8145RT model.
Figure 1-1. PXI-8145RT Embedded Computer

Chapter 1 Introduction
PXI-8140RT Series User Manual 1-2 ni.com
Figure 1-2 shows a PXI-8146RT model.
Figure 1-2. PXI-8146RT Embedded Computer
The PXI-8140RT Series controllers are 3U PXI/CompactPCI embedded
computers based on the Peripheral Component Interface (PCI) bus
and Industry Standard Architecture (ISA). These computers are
high-performance, easy-to-use platforms for controlling PCI systems,
featuring complete PXI (PCI eXtensions for Instrumentation) functionality
through interactive utilities. In addition, the PXI-8146RT has an
IEEE 488.2 interface that is compatible with the NI-488.2 architecture.
The PXI-8140RT Series are custom computers that you install directly in
the system controller slot of your PXI mainframe. An embedded computer
can take full advantage of the PXI high-performance backplane
capabilities.

Chapter 1 Introduction
©National Instruments Corporation 1-3 PXI-8140RT Series User Manual
Hardware Description
PXI-8140RT Series Design
The PXI-8140RT Series PXI embedded computers are high-performance
PXI system controllers. The PXI-8140RT Series supports masters in all
available PXI slots.
The PXI-8140RT Series design includes many standard PC peripherals,
which means you can install your custom-designed peripheral devices in all
PXI slots. It also has one user-accessible SO-DIMM socket so it is easy to
upgrade memory. The PXI-8140RT plugs directly into the system
controller slot and expands to the left, thus preserving all usable PXI slots
for user-defined peripheral devices.
PXI-8140RT Series Models
Currently, the PXI-8140RT Series consists of two models—the
PXI-8145RT and the PXI-8146RT.
The models differ in the front-panel I/O. The PXI-8145RT comes complete
with a serial port, a 10/100BaseT Ethernet port, and software installed. The
PXI-8146RT adds an IEEE 488.2 (GPIB) interface compatible with the
National Instruments AT-GPIB/TNT and an SMB connector for the
watchdog trigger.
Memory
The PXI-8140RT and its memory socket is easily accessible so you can
install additional DRAM in the field. You can install up to 256 MB of
10 ns SDRAM, using 144-pin SO-DIMMS.
For information on adding RAM by installing SO-DIMMs, refer to
Appendix A, Specifications.
Watchdog Timer
The PXI-8140RT Series controller features a user-programmable
counter/timer, known as a watchdog, that counts down from a
user-specified value. You can frequently reset the counter/timer in
software, by a backplane trigger line, or by the SMB connector
(PXI-8146RT only). In the event that the watchdog counter reaches zero,
as in a software failure, it is programmed to reset the controller, set an
occurrence, assert a backplane trigger line, or assert a signal on the SMB
connector (PXI-8146RT only).

Chapter 1 Introduction
PXI-8140RT Series User Manual 1-4 ni.com
System Slot Functionality
You can use the PXI-8140RT Series computers to achieve full PXI system
slot control of your PXI system. In the system slot, the PXI-8140RT Series
provides master/slave capabilities to all slots in the PXI system.
Custom Application-Specific Interface Chips
The PXI-8146RT has the TNT4882C custom ASIC to give full GPIB
control of external instruments via a front-panel connector. GPIB
capability is fully compatible with IEEE 488.2 and the industry-standard
NI-488.2M driver for a variety of operating systems.
Front Panel Features
The PXI-8140RT Series has the following front-panel features:
•System reset push-button
•Front-panel connectors:
–RS-232 Serial
–GPIB (PXI-8146RT only)
–Watchdog trigger SMB (PXI-8146RT only)
–10/100BaseT Ethernet
•Six front-panel LEDs that show PC status
–POWER OK LED indicates that the power is on and reset is no
longer asserted.
–DRIVE LED indicates when an access to the internal flash disk is
occurring.
–10/100 indicates 100BaseT status
–USER1 indicates system status
–USER2 is programmable
–USER3 is programmable
•Two front-panel LEDs that show Ethernet port status
–TX/RX LED indicates that the PXI-8140RT Series is receiving or
transmitting a packet of data through its Ethernet port.
–LINK LED indicates periodic link test passed.

Chapter 1 Introduction
©National Instruments Corporation 1-5 PXI-8140RT Series User Manual
Optional Equipment
Contact National Instruments to order the following optional equipment:
•Single-shielded 2 m GPIB cable
National Instruments Software
National Instruments has developed several software kits that you can use
with the PXI-8140RT Series. The software is already installed on your
flash drive.
The NI-488.2M software kit gives you access to the industry-standard
NI-488.2M software for controlling external GPIB instruments through the
GPIB port on the front panel of the PXI-8146RT. The GPIB interface is
fully compatible with the NI-488.2M driver for a variety of operating
systems. Any GPIB application using NI-488.2M or NI-VISA will run on
the PXI-8146RT.
NI-DAQ has an extensive library of functions that you can call from your
application programming environment. These functions include routines
for analog input (A/D conversion), buffered data acquisition (high-speed
A/D conversion), analog output (D/A conversion), waveform generation,
digital I/O, counter/timer operations, SCXI, RTSI, self-calibration,
messaging, and acquiring data to extended memory.
NI-VISA is the National Instruments implementation of the VISA
specification. VISA is a uniform API for communicating and controlling
Serial, GPIB, PXI, VXI, and various other types of instruments. This API
aids in the creation of more portable applications and instrument drivers.
For information on writing your own PXI instrument driver with NI-VISA,
see the NI-VISA Getting Started manual.
The PXI-8140RT Series controllers are specifically designed to use
LabVIEW RT. For more information, refer to your LabVIEW RT manual.

©National Instruments Corporation 2-1 PXI-8140RT Series User Manual
2
PXI-8140RT Series
Configuration and Installation
This chapter contains instructions for configuring and installing the
PXI-8140RT Series embedded computer. Unless otherwise noted, these
instructions apply to all models in the PXI-8140RT Series, which currently
consists of the PXI-8145RT and the PXI-8146RT.
Caution Electrostatic discharge can damage several components on your PXI-8140RT
module. To avoid such damage in handling the module, touch the antistatic plastic package
to a metal part of your PXI mainframe before removing the module from the package.
Default Settings
This section summarizes the hardware default settings for the PXI-8140RT
Series for easy reference. The module is set at the factory for the most
commonly used configuration.
Table 2-1 lists the factory-default settings and options for the onboard
jumpers and switches.
Table 2-1. PXI-8140RT Series Hardware Default Settings
Jumper/Switch Default Setting Optional Setting
W1 (CPU Board)
CMOS Clear
Disabled (Normal
CMOS operation)
Clear CMOS
W2 (BIOS Protect) Disabled (Normal
BIOS operation)
Overwrite BIOS
W3 (CPU Board)
INTS Connection
Serial IRQ Connected
to INTS
a. No Connection
b. IRQ15
W4 (CPU Board)
INTP Connection
Watchdog NMI a. IRQ14
b. No Connection
S1 GPIB Interrupt
Select
IRQ 11 IRQ 5

Chapter 2 PXI-8140RT Series Configuration and Installation
PXI-8140RT Series User Manual 2-2 ni.com
Figure 2-1 shows the location and factory-default settings of the
configuration switches and jumpers on the PXI-8140RT Series.
Figure 2-1. PXI-8140RT Series I/O Board Parts Locator Diagram
S2 Safe Mode Select Normal Mode Software Safe Mode
S3 Serial Redirect Normal Operation Serial Redirection
IPRST/NRML Normal Operation Reset IP Address
NOAPP/NRML Normal Operation Halt Application
Execution
1S1
2S2
3W1
4W4
5S3
6W3
7W2
8 NOAPP/NRML
9 IPRST/NRML
Table 2-1. PXI-8140RT Series Hardware Default Settings (Continued)
Jumper/Switch Default Setting Optional Setting
1
2
3
5
4
6
7
9
8

Chapter 2 PXI-8140RT Series Configuration and Installation
©National Instruments Corporation 2-3 PXI-8140RT Series User Manual
Installing CompactFlash Memory
This section describes how to install and remove CompactFlash memory.
Figure 2-2. Installing CompactFlash Memory
To install the CompactFlash memory, refer to Figure 2-2 and follow
these steps:
1. Insert the CompactFlash memory card in either slot on the I/O board.
2. Insert the retainer screw through the rear of the I/O board.
3. Assemble the spacer and retainer bracket as shown and tighten screw.
To remove the CompactFlash memory, reverse these steps.
1 Retainer Screw
2 CompactFlash Memory Card
3 Spacer
4 Retainer Bracket
1
2
3
4

Chapter 2 PXI-8140RT Series Configuration and Installation
PXI-8140RT Series User Manual 2-4 ni.com
Configuring the PXI-8140RT Series
This section describes how to configure the following options.
•System RAM
•System CMOS
•Serial IRQ, INTP and INTS connection
•Ethernet power-on defaults
Installed System RAM
You can change the amount of installed RAM on the PXI-8140RT Series
by installing DRAM SO-DIMMs. Refer to Appendix A, Specifications,for
more information on SO-DIMMs.
System CMOS
The PXI-8140RT contains a backed-up memory used to store BIOS
defaults and configuration information.
To clear the CMOS contents, short the pins of W1 as shown in Figure 2-3b.
Plug the unit back into the mainframe and apply power momentarily. Turn
the power back off and remove the unit. Place the jumper back in the default
state.
Caution Do not keep these two pins short-circuited. The computer cannot sustain the
CMOS memory when the power is turned off if you leave these two pins shorted.
Figure 2-3. System CMOS
a. Normal Operation (Default) b. Clear CMOS Contents
W1
W1

Chapter 2 PXI-8140RT Series Configuration and Installation
©National Instruments Corporation 2-5 PXI-8140RT Series User Manual
Figure 2-4 shows the BIOS protect configuration options. To overwrite the
BIOS, short the pins of W2 as shown in Figure 2-4b.
Figure 2-4. BIOS Protect Configuration
Serial IRQ, INTP, and INTS
You can use jumper settings on the PXI-8140RT Series to connect INTP on
the PXI backplane to IRQ14 as well as INTS to either IRQ15 or to serial
IRQ. Refer to the documentation that comes with your PXI peripheral
device to see if you need to make any changes from the default settings.
For more information on Serial IRQ, refer to the Serialized IRQ Support for
PCI Systems Specification.
Figure 2-5 shows the INTP configuration options, and Figure 2-6 shows the
INTS configuration options.
Figure 2-5. INTP Configuration
Figure 2-6. INTS Configuration
a. Normal Operation (Default) b. Overwrite BIOS
W2
W2
W4 W4
a. No Connection (Default) b. IRQ14
W4
c. WD-NMI
W3 W3 W3
a. Serial IRQ (Default) b. No Connection c. IRQ15

Chapter 2 PXI-8140RT Series Configuration and Installation
PXI-8140RT Series User Manual 2-6 ni.com
Figure 2-7 shows the GPIB interrupt configuration options. The default is
IRQ 11.
Figure 2-7. GPIB Interrupt Configuration
Figure 2-8 shows the safe mode configuration options. The default is
normal operation.
Figure 2-8. Safe Mode Configuration
Figure 2-9 shows the serial redirection configuration options. The default
is normal operation.
Figure 2-9. Serial Redirect Configuration
b. IRQ 5a. IRQ 11 (Default)
S1 S1
b. Software Safe Modea. Normal Mode (Default)
S2 S2
b. Serial Redirectiona. Normal Mode (Default)
S3 S3