National Instruments PXI Express NI User Manual

PXI Express

NI PXIe-1073 User Manual

NI PXIe-1073 User Manual

TM

February 2011
372768B-01

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Important Information

Warranty

The PXIe-1073 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 instruc tions 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

E

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. CUSTOMER’S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF NATIONAL

I

NSTRUMENTS 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,
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Instruments Corporation.

National Instruments respects the intellectual property of others, and we ask our users to do the same. NI software is protected by copyright and other
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LabVIEW, National Instruments, NI, ni.com, the National Instruments corporate logo, and the Eagle logo are trademarks of National
Instruments Corporation. Refer to the Trademark Information at

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

Members of the National Instruments Alliance Partner Program are business entities independent from National Instruments and have no agency,
partnership, or joint-venture relationship with National Instruments.

Patents

For patents covering National Instruments products/technology, refer to the appropriate location: Help»Patents in your software,

patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents.

the

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
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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
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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.

ni.com/trademarks for other National Instruments trademarks.

Compliance

Electromagnetic Compatibility Information

This hardware has been tested and found to comply with the applicable regulatory requirements and limits for electromagnetic
compatibility (EMC) as indicated in the hardware’s Declaration of Conformity (DoC)
designed to provide reasonable protection against harmful interference when the hardware is operated in the intended
electromagnetic environment. In special cases, for example when either highly sensitive or noisy hardware is being used in close
proximity, additional mitigation measures may have to be employed to minimize the potential for electromagnetic interference.

While this hardware is compliant with the applicable regulatory EMC requirements, there is no guarantee that interference will
not occur in a particular installation. To minimize the potential for the hardware to cause interference to radio and television
reception or to experience unacceptable performance degradation, install and use this hardware in strict accordance with the
instructions in the hardware documentation and the DoC

If this hardware does cause interference with licensed radio communications services or other nearby electronics, which can be
determined by turning the hardware off and on, you are encouraged to try to correct the interference by one or more of the
following measures:

• Reorient the antenna of the receiver (the device suffering interference).

• Relocate the transmitter (the device generating interference) with respect to the receiver.

• Plug the transmitter into a different outlet so that the transmitter and the receiver are on different branch circuits.

Some hardware may require the use of a metal, shielded enclosure (windowless version) to meet the EMC requirements for
special EMC environments such as, for marine use or in heavy industrial areas. Refer to the hardware’s user documentation and

1

for product installation requirements.

the DoC

When the hardware is connected to a test object or to test leads, the system may become more sensitive to disturbances or may
cause interference in the local electromagnetic environment.

Operation of this hardware in a residential area is likely to cause harmful interference. Users are required to correct the
interference at their own expense or cease operation of the hardware.

Changes or modifications not expressly approved by National Instruments could void the user’s right to operate the hardware
under the local regulatory rules.

1

.

1

. These requirements and limits are

1

The Declaration of Conformity (DoC) contains important EMC compliance information and instructions for the user or
installer. To obtain the DoC for this product, visit
and click the appropriate link in the Certification column.

ni.com/certification, search by model number or product line,

Contents

About This Manual

Conventions ...................................................................................................................vii

Related Documentation..................................................................................................viii

Chapter 1
Getting Started

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

What You Need to Get Started ......................................................................................1-1

Key Features ..................................................................................................................1-2

Chassis Description........................................................................................................1-3

Optional Equipment.......................................................................................................1-5

EMC Filler Panels ...........................................................................................1-5

Slot Blockers ...................................................................................................1-5

Rack Mount Kit ...............................................................................................1-6

Handle/Feet Kit ...............................................................................................1-6

NI PXIe-1073 Chassis Backplane Overview.................................................................1-6

Interoperability with CompactPCI ..................................................................1-6

MXI Interface ..................................................................................................1-7

Hybrid Peripheral Slots ...................................................................................1-8

PXI Express Peripheral Slots...........................................................................1-8

PXI Local Bus .................................................................................................1-8

PXI Trigger Bus ..............................................................................................1-9

System Reference Clock..................................................................................1-9

Chapter 2
Installation and Configuration

Safety Information .........................................................................................................2-1

Chassis Cooling Considerations ....................................................................................2-2

Providing Adequate Clearance ........................................................................2-2

Chassis Ambient Temperature Definition.......................................................2-3

Setting Fan Speed............................................................................................2-3

Installing Filler Panels.....................................................................................2-4

Installing Slot Blockers ...................................................................................2-4

Rack Mounting ..............................................................................................................2-4

Connecting Safety Ground.............................................................................................2-4

Connecting to Power Source..........................................................................................2-4

Getting Started With The System ..................................................................................2-5

Unpacking The MXI-Express Host Card.......................................................................2-5

© National Instruments Corporation v NI PXIe-1073 User Manual

Contents

Hardware Installation .................................................................................................... 2-6

Functional Overview ..................................................................................................... 2-11

MXI-Express Cable Options ......................................................................................... 2-12

Installing Peripheral Modules........................................................................................ 2-12

PXI Express System Configuration with MAX ............................................................2-14

Using System Configuration and Initialization Files .................................................... 2-17

Chapter 3
Maintenance

Service Interval.............................................................................................................. 3-1

Preparation.....................................................................................................................3-1

Cleaning......................................................................................................................... 3-1

Installing an NI ExpressCard Module............................................................. 2-6

Installing an NI PCI Express Host Card ......................................................... 2-7

Cabling ............................................................................................................ 2-9

Powering Up the MXI-Express System ..........................................................2-10

Powering Down the MXI-Express System ..................................................... 2-10

Checking LEDs for Status............................................................................... 2-11

Basic PXI System Configuration .................................................................... 2-15

Trigger Configuration in MAX....................................................................... 2-16

Interior Cleaning ............................................................................................. 3-2

Exterior Cleaning ............................................................................................ 3-2

Appendix A
Specifications

Appendix B
Pinouts

Appendix C
Technical Support and Professional Services

Glossary

Index

NI PXIe-1073 User Manual vi ni.com

About This Manual

The NI PXIe-1073 User Manual contains information about installing,
configuring, using, and maintaining the NI PXIe-1073 chassis.

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 Options»Settings»General directs you to
pull down the Options menu, select the Settings item, and select General
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. When this symbol is marked on
the product, refer to the Read Me First: Safety and Electromagnetic
Compatibility document, shipped with the product, for precautions to take.

bold Bold text denotes items that you must select or click in the software, such

as menu items and dialog box options. Bold text also denotes parameter
names.

italic Italic text denotes variables, emphasis, a cross-reference, or an introduction

to a key concept. Italic text 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.

© National Instruments Corporation vii NI PXIe-1073 User Manual

About This Manual

Related Documentation

The following documents contain information that you might find helpful
as you read this manual:

• IEEE 1101.1-1991, IEEE Standard for Mechanical Core

Specifications for Microcomputers Using IEC 603-2 Connectors

• IEEE 1101.10, IEEE Standard for Additional Mechanical

Specifications for Microcomputers Using IEEE 1101.1 Equipment
Practice

• PICMG EXP.0 R1.0 CompactPCI Express Specification,
PCI Industrial Computers Manufacturers Group

• PCI Express Base Specification, Revision 1.1, PCI Special Interest
Group

• PXI-5 PXI Express Hardware Specification, Revision 2.0,
PXI Systems Alliance

• CompactPCI PICMG 2.0 R3.0 Specification, PCI Industrial
Computers Manufacturing Group

• NI PXIe-1073 Rack Mount Installation Guide

NI PXIe-1073 User Manual viii ni.com

Getting Started

This chapter describes the key features of the NI PXIe-1073 chassis, and
lists the kit contents and optional equipment you can order from National
Instruments.

Unpacking

Carefully inspect the shipping container and the chassis for damage. Check
for visible damage to the metal work. Check to make sure all handles,
hardware, and switches are undamaged. Inspect the inner chassis for any
possible damage, debris, or detached components. If damage appears to
have been caused during shipment, file a claim with the carrier. Retain the
packing material for possible inspection and/or reshipment.

What You Need to Get Started

The NI PXIe-1073 chassis kit contains the following items:

1

❑ NI PXIe-1073 chassis

❑ Filler panels

❑ AC power cable—refer to Table 1-1 for AC power cables

❑ NI PXIe-1073 User Manual

❑ Read Me First: Safety and Electromagnetic Compatibility

❑ Driver CD-ROM containing NI PXI chassis software

❑ Chassis number labels

❑ MXI-Express x1 cable

❑ MXI-Express x1 host controller card

© National Instruments Corporation 1-1 NI PXIe-1073 User Manual

Chapter 1 Getting Started

Key Features

Table 1-1. AC Power Cables

Power Cable Reference Standards

Standard 120 V, 15 A (USA) NEMA 5-15 (gray color)

Switzerland 220 V SEV

Australia 240 V AS C112

Universal Euro 230 V CEE (7), II, IV, VII IEC83

North America 240 V, 15 A NEMA 6-15 (gray color)

United Kingdom 230 V BS 1363/IEC83

Japan 100 V, 15 A JIS C8303 (gray color)

If you are missing any of the items listed in Table 1-1, or if you have the
incorrect AC power cable, contact National Instruments.

The NI PXIe-1073 combines a 5-slot PXI backplane with a structural
design that has been optimized for maximum usability in a wide range of
applications.

The key features of the chassis include the following:

• Accepts 3U PXI Express, CompactPCI Express, and hybrid slot
compatible PXI-1/CompactPCI (PICMG EXP.0 R1.0) modules

• 5 peripheral slots in a rugged, compact chassis with universal AC
input, and automatic voltage/frequency ranging

• Integrated MXI-Express controller

• On/Standby momentary power switch on the front panel for easy
access

• AUTO/HIGH temperature-controlled fan speed based on air-intake
temperature to minimize audible noise

• Carrying handle for portability (Optional)

• Rack mountable

NI PXIe-1073 User Manual 1-2 ni.com

Chassis Description

Figure 1-1 and Figure 1-2 show the key features of the NI PXIe-1073
chassis front and rear panels. Figure 1-1 shows the front view of the
NI PXIe-1073. Figure 1-2 shows the rear view of the NI PXIe-1073.
Figure 1-3 shows the bottom of the chassis.

Chapter 1 Getting Started

NI PXIe-1073

7

6

1 Captive Screw
2 PXI Filler Panel
3 Rubber Foot
4 Generic Peripheral Slots

Figure 1-1. Front View of the NI PXIe-1073 Chassis

5

5Link LED
6 Power Switch
7 Power Supply Airflow Intake Vents

4

1

2

3

© National Instruments Corporation 1-3 NI PXIe-1073 User Manual

Chapter 1 Getting Started

6

5

2

3

4

1

7

1 Rear Exhaust Vents
2 AC Input
3 Power Supply Fan Exhaust
4 NI MXI-Express Chassis

Controller Connector

5 Chassis Ground Screw
6 Auto/High Fan Speed Selector Switch
7 Rubber Foot

Figure 1-2. Rear View of the NI PXIe-1073 Chassis

NI PXIe-1073 User Manual 1-4 ni.com

Chapter 1 Getting Started

1

1 Rubber Foot
2Power Switch

Figure 1-3. Bottom View of the NI PXIe-1073 Chassis

2

3

3 Fan Intake Cover
4 Fan Intake Cover Screw

4

Optional Equipment

Contact National Instruments to order the following options for the
NI PXIe-1073 chassis.

EMC Filler Panels

Optional EMC filler panel kits are available from National Instruments.

Slot Blockers

Optional slot blocker kits are available from National Instruments for
improved thermal performance when all slots are not used.

© National Instruments Corporation 1-5 NI PXIe-1073 User Manual

Chapter 1 Getting Started

Rack Mount Kit

A rack mount kit option is available for mounting the NI PXIe-1073 chassis
into a 19 in. instrument cabinet. Refer to Figure A-3, NI PXIe-1073 Chassis

Rack Mount Kit Components, for more information.

Handle/Feet Kit

An optional side handle and rubber feet kit is available from National
Instruments to provide a handle for portability.

NI PXIe-1073 Chassis Backplane Overview

Interoperability with CompactPCI

The design of the NI PXIe-1073 provides you the flexibility to use the
following devices in a single PXI Express chassis:

• PXI Express compatible products

• CompactPCI Express compatible Type-2 peripheral products

• PXI hybrid slot compatible peripheral products

• Standard CompactPCI peripheral products

NI PXIe-1073 User Manual 1-6 ni.com

Chapter 1 Getting Started

F1E1D1C1B1A1Z1

F1E1D1C1B1A1Z1

F1E1D1C1B1A1Z1

PCIe/PCI

Bridge

PCIe

Switch

MXIe X1
(to host)

x1

x1

x1

x1 x1 x1 x1 x1

(Upstream)

x1

PCI Bus

x1

x1

x1

Refer to Figure 1-4 for an overview of the NI PXIe-1073 architecture.

Figure 1-4. NI PXIe-1073 Backplane Architecture

The chassis backplane has +5 V V(I/O). Refer to the CompactPCI
PICMG 2.0 R 3.0 Specification for details regarding V(I/O).

MXI Interface

The NI PXIe-1073 chassis has a built-in x1 MXI-Express interface that can
be accessed through the MXI-Express chassis controller connector on the
back of the chassis, as shown in Figure 1-2.

The MXIe interface can be cabled to a remote system with a host card using

Note The NI PXIe-1073 chassis does not have a slot number 1 because it is replaced by

the MXIe interface rear connector.

© National Instruments Corporation 1-7 NI PXIe-1073 User Manual

a x1 MXI-Express cable to provide control of the NI PXIe-1073 chassis.

Chapter 1 Getting Started

Hybrid Peripheral Slots

The chassis provides three (3) hybrid peripheral slots (slot numbers 4–6) as
defined in the PXI-5 PXI Express Hardware Specification. These hybrid
peripheral slots can accept the following peripheral modules:

• A PXI Express Peripheral with a x1 PCI Express link through the
PCI Express switch to the upstream PC.

• A CompactPCI Express Type-2 Peripheral with a x1 PCI Express link
through a PCI Express switch to the upstream PC.

• A hybrid-compatible PXI Peripheral module that has been modified by
replacing the J2 connector with an XJ4 connector installed in the upper
eight rows of J2. Refer to the PXI Express Specification for details.
The PXI Peripheral communicates through the backplane’s 32-bit
PCI bus.

• A CompactPCI 32-bit peripheral on the backplane’s 32-bit PCI bus.

The hybrid peripheral slots provide full PXI Express functionality and
32-bit PXI functionality except for PXI Local Bus. The hybrid peripheral
slot only connects to PXI Local Bus 6 left and right.

PXI Express Peripheral Slots

There are two (2) PXI Express peripheral slots: slots 2 and 3. PXI Express
peripheral slots can accept the following modules:

• A PXI Express Peripheral with a x1 PCI Express link through the
PCI Express switch to the upstream PC.

• A CompactPCI Express Type-2 Peripheral with a x1 PCI Express link
through a PCI Express switch to the upstream PC.

PXI Local Bus

The PXI backplane local bus is a daisy-chained bus that connects each
peripheral slot with the adjacent peripheral slots to the left and right (refer
to Figure 1-5).

The backplane routes PXI Local Bus 6 between adjacent PXI slots. The left
local bus 6 from slot 2 is not routed anywhere and the right local bus signal
from slot 6 is not routed anywhere.

Local bus signals may range from high-speed TTL signals to analog signals
as high as 42 V.

NI PXIe-1073 User Manual 1-8 ni.com

Chapter 1 Getting Started

PXI Trigger Bus

Local

Bus

Peripheral Slot [2]

Embedded

MXI

Controller

Figure 1-5. Local Bus Routing

Local

Bus

Peripheral Slot [3]

PCI Arbitration and Clock Signals

Local

Bus

Peripheral Slot [4]

Local

Bus

Peripheral Slot [5]

Peripheral Slot [6]

All slots share eight PXI trigger lines. You can use these trigger lines
in a variety of ways. For example, you can use triggers to synchronize
the operation of several different PXI peripheral modules. Modules can
pass triggers to one another, allowing precisely timed responses to
asynchronous external events the system is monitoring or controlling.

The PXI trigger lines allow you to send trigger signals to, and receive
trigger signals from, every slot in the chassis. Static trigger routing
(user-specified line assignments) can be configured through Measurement
& Automation Explorer (MAX). Dynamic routing of triggers (automatic
line assignments) is supported through certain National Instruments drivers
like NI-DAQmx.

System Reference Clock

The NI PXIe-1073 provides a 10 MHz clock (PXI_CLK10) and 100 MHz
clock (PXIe_CLK100) to each peripheral slot. The 100 MHz clock is a high
speed LVPECL clock, while the 10 MHz clock is a TTL/CMOS clock. The
backplane also provides a PXIe_SYNC100 signal which asserts a 10 ns
pulse which is synchronous to PXIe_CLK100.

An independent buffer (having a source impedance matched to the
backplane and a skew of less than 250 ps between slots) drives
PXI_CLK10 to each peripheral slot. You can use this common reference
clock signal to synchronize multiple modules in a measurement or control
system.

© National Instruments Corporation 1-9 NI PXIe-1073 User Manual

Chapter 1 Getting Started

An independent buffer drives PXIe_CLK100 to each peripheral slot. These
clocks are matched in skew to less than 100 ps. The differential pair must
be terminated on the peripheral with LVPECL termination for the buffer to
drive PXIe_CLK100 so that when there is no peripheral or a peripheral that
does not connect to PXIe_CLK100, there is no clock being driven on the
pair to that slot. Refer to Figure 1-6 for a termination example.

CLK100 +

CLK100 –

50 Ω 50 Ω

47 Ω 0.01 µF

Figure 1-6. CLK100 Termination

+

–

An independent buffer drives PXIe_SYNC100 to each peripheral slot. The
differential pair must be terminated on the peripheral with LVPECL
termination for the buffer to drive PXIe_SYNC100 so that when there is
no peripheral or a peripheral that does not connect to PXIe_SYNC100,
there is no SYNC100 signal being driven on the pair to that slot. Refer to
Figure 1-6 for a termination example.

PXI_CLK10, PXIE_CLK100, and PXIE_SYNC100 are driven to every
peripheral slot and have the default timing relationship described in
Figure 1-7.

0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9

PXIe_CLK100

PXI_CLK10

PXIe_SYNC100

Figure 1-7. System Reference Clock Default Behavior

NI PXIe-1073 User Manual 1-10 ni.com

Installation and Configuration

This chapter describes how to install, configure, and use the NI PXIe-1073
chassis.

Before connecting the chassis to a power source, read this chapter and the
Read Me First: Safety and Electromagnetic Compatibility document
included with your chassis.

Safety Information

Caution Before undertaking any troubleshooting, maintenance, or exploratory procedure,

carefully read the following caution notices.

This equipment contains voltage hazardous to human life and safety, and is
capable of inflicting personal injury.

• Chassis Grounding—The chassis requires a connection from the

premise wire safety ground to the chassis ground. The earth safety
ground must be connected during use of this equipment to minimize
shock hazards. Refer to the Connecting Safety Ground section for
instructions on connecting safety ground.

• Live Circuits—Operating personnel and service personnel must not

remove protective covers when operating or servicing the chassis.
Adjustments and service to internal components must be undertaken
by qualified service technicians. During service of this product,
the mains connector to the premise wiring must be disconnected.
Dangerous voltages may be present under certain conditions;
use extreme caution.

• Explosive Atmosphere—Do not operate the chassis in conditions

where flammable gases are present. Under such conditions, this
equipment is unsafe and may ignite the gases or gas fumes.

2

© National Instruments Corporation 2-1 NI PXIe-1073 User Manual

Chapter 2 Installation and Configuration

• Part Replacement—Only service this equipment with parts that are
exact replacements, both electrically and mechanically. Contact
National Instruments for replacement part information. Installation of
parts with those that are not direct replacements may cause harm to
personnel operating the chassis. Furthermore, damage or fire may
occur if replacement parts are unsuitable.

• Modification—Do not modify any part of the chassis from its original
condition. Unsuitable modifications may result in safety hazards.

Chassis Cooling Considerations

The NI PXIe-1073 chassis is designed to operate on a bench or in an
instrument rack. Determine how you want to use the chassis and follow the
appropriate installation instructions.

Providing Adequate Clearance

Caution Failure to provide adequate clearances may result in thermal related failures in the

chassis or modules.

Apertures in the top, bottom, front, rear, and along the right side of the
chassis facilitate power supply and module cooling. Air enters through a
fan intake in the bottom of the chassis for module cooling. It then exits
through the upper sections at the right side, back, and through the top, as
shown in Figure 2-1. Air cooling the power supply enters the front of the
chassis, which is shown in Figure 1-1, Front View of the NI PXIe-1073

Chassis, then exits through the rear of the chassis, which is shown in

Figure 1-2, Rear View of the NI PXIe-1073 Chassis. Place the chassis on a
bench top or in an instrument rack so that the fans (air intakes) and the air
outlet apertures along the right side, the top, and the back of the chassis
have adequate ventilation. Provide at least 44.5 mm (1.75 in.) clearance
above, behind, and on the sides of the unit for adequate venting.
High-power applications may require additional clearance.

NI PXIe-1073 User Manual 2-2 ni.com