National Instruments Corporation SCXI-1162 User manual

© Copyright 1993, 1994 National Instruments Corporation.
All Rights Reserved.
SCXI-1162
User Manual
32-Channel Isolated Digital Input Module
March 1994 Edition
Part Number 320572-01

National Instruments Corporate Headquarters
6504 Bridge Point Parkway
Austin, TX 78730-5039
[phone]
Technical support fax: [phone]
[phone]
Branch Offices:
Australia [phone], Austria [phone], Belgium 02/757.00.20, Canada (Ontario) [phone],
Canada (Québec) [phone], Denmark 45 76 26 00, Finland (90) 527 2321, France (1) 48 14 24 24,
Germany 089/741 31 30, Italy 02/48301892, Japan [phone], Netherlands 03480-33466, Norway 32-848400,
Spain (91) 640 0085, Sweden 08-730 49 70, Switzerland 056/20 51 51, U.K. 0635 523545

Limited Warranty
The SCXI-1162 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.
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 manual 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
LabVIEW®, NI-DAQ®, and RTSI®are trademarks of National Instruments Corporation.
Product and company names listed are trademarks or trade names of their respective companies.

Warning Regarding Medical and Clinical Use
of National Instruments Products
National Instruments products are not designed with components and testing intended to ensure a level of reliability
suitable for use in treatment and diagnosis of humans. Applications of National Instruments products involving
medical or clinical treatment can create a potential for accidental injury caused by product failure, or by errors on the
part of the user or application designer. Any use or application of National Instruments products for or involving
medical or clinical treatment must be performed by properly trained and qualified medical personnel, and all
traditional medical safeguards, equipment, and procedures that are appropriate in the particular situation to prevent
serious injury or death should always continue to be used when National Instruments products are being used.
National Instruments products are NOT intended to be a substitute for any form of established process, procedure, or
equipment used to monitor or safeguard human health and safety in medical or clinical treatment.

© National Instruments Corporation v SCXI-1162 User Manual
Contents
About This Manual...........................................................................................................ix
Organization of This Manual .......................................................................................ix
Conventions Used in This Manual...............................................................................x
Related Documentation................................................................................................xi
Customer Communication ...........................................................................................xii
Chapter 1
Introduction ........................................................................................................................1-1
What Your Kit Should Contain....................................................................................1-2
Optional Software ........................................................................................................1-2
Optional Equipment .....................................................................................................1-3
Custom Cables .................................................................................................1-3
Unpacking ....................................................................................................................1-4
Chapter 2
Configuration and Installation.....................................................................................2-1
Module Configuration..................................................................................................2-1
Jumper Use.......................................................................................................2-3
Jumper W1 ...........................................................................................2-4
Using Jumper W1.................................................................................2-5
Jumper W2 ...........................................................................................2-5
Using Jumper W2.................................................................................2-5
Jumpers W3 and W4............................................................................2-5
Jumper W5 ...........................................................................................2-5
Jumper W6 ...........................................................................................2-5
Using Jumpers W5 and W6 .................................................................2-6
Hardware Installation...................................................................................................2-8
Signal Connections ......................................................................................................2-8
Front Connector ...............................................................................................2-9
Front Connector Signal Descriptions...............................................................2-10
Terminal Block ................................................................................................2-13
SCXI-1326 Terminal Block.....................................................2-13
Signal Connection. ......................................................2-14
SCXI-1326 Installation. ...............................................2-16
Rear Signal Connector .....................................................................................2-16
Rear Signal Connector Signal Descriptions.....................................................2-18
Digital I/O Signal Connections............................................................2-19
Timing Requirements and Communication Protocol.......................................2-21
Communication Signals .......................................................................2-21
Chapter 3
Theory of Operation ........................................................................................................3-1
Functional Overview....................................................................................................3-1
SCXIbus Connector .........................................................................................3-2
SCXIbus Connector Signal Descriptions.........................................................3-3

Contents
SCXI-1162 User Manual vi © National Instruments Corporation
Digital Interface ...........................................................................................................3-4
Register Circuitry.........................................................................................................3-5
Input Channels .............................................................................................................3-6
Chapter 4
Register Descriptions.......................................................................................................4-1
Register Description.....................................................................................................4-1
Register Description Format ............................................................................4-1
SCXI-1162 Registers .......................................................................................4-1
Address Handler...............................................................................................4-1
Module ID Register..............................................................................4-3
Data Register........................................................................................4-4
Parking Register...............................................................................................4-5
Slot 0 Register Descriptions.............................................................................4-6
Slot-Select Register..............................................................................4-7
Chapter 5
Programming......................................................................................................................5-1
Programming Considerations.......................................................................................5-1
Notation............................................................................................................5-1
Register Reads..................................................................................................5-1
Register Selection and Read Procedure ...............................................5-2
Appendix A
Specifications......................................................................................................................A-1
Physical ........................................................................................................................A-1
Operating Environment................................................................................................A-2
Storage Environment....................................................................................................A-2
Appendix B
Rear Signal Connector....................................................................................................B-1
Rear Signal Connector Signal Descriptions.................................................................B-2
Appendix C
SCXIbus Connector .........................................................................................................C-1
SCXIbus Connector Signal Descriptions.....................................................................C-3
Appendix D
SCXI-1120 Front Connector.........................................................................................D-1
Front Connector Signal Descriptions...........................................................................D-3
Appendix E
SCXI-1162 Cabling...........................................................................................................E-1
SCXI-1340 Cable Assembly........................................................................................E-1
SCXI-1340 Installation ....................................................................................E-3
SCXI-1341 Lab-NB, Lab-PC, or Lab-PC+ and SCXI-1344 Lab-LC
Cable Assembly ...........................................................................................................E-4
SCXI-1341 and SCXI-1344 Installation..........................................................E-5
SCXI-1342 PC-LPM-16 Cable Assembly ................................................................... E-5
SCXI-1342 Installation ....................................................................................E-6

Contents
© National Instruments Corporation vii SCXI-1162 User Manual
DIO-96, AT-MIO-16D, and AT-MIO-64F-5 Board Connection ................................E-7
SCXI-1351 and NB5 Cable Installation...........................................................E-8
SCXI-1348 DIO-32F Cable Assembly ........................................................................E-9
SCXI-1348 Installation ....................................................................................E-11
SCXI-1180 Feedthrough Panel .................................................................................... E-11
SCXI-1180 Installation ....................................................................................E-11
SCXI-1302 50-Pin Terminal Block .............................................................................E-13
SCXI-1302 Wiring Procedure..........................................................................E-13
SCXI-1302 Installation ....................................................................................E-14
SCXI-1351 One-Slot Cable Extender..........................................................................E-14
SCXI-1351 Installation ....................................................................................E-15
Multiple-Chassis Connections for the SCXI-1162 ......................................................E-15
SCXI-1350 Multichassis Adapter .................................................................... E-15
SCXI-1350 Installation ........................................................................E-15
SCXI-1343 Rear Screw Terminal Adapter ..................................................................E-16
SCXI-1343 Installation ....................................................................................E-17
Appendix F
Customer Communication.............................................................................................F-1
Glossary.......................................................................................................................Glossary-1
Index ..................................................................................................................................Index-1

Contents
SCXI-1162 User Manual viii © National Instruments Corporation
Figures
Figure 1-1. SCXI-1162 Digital Input Module ....................................................................1-1
Figure 2-1. SCXI-1162 General Parts Locator Diagram ....................................................2-2
Figure 2-2. SCXI-1162 Front Connector Pin Assignment .................................................2-9
Figure 2-3. Signal Connection Examples ...........................................................................2-11
Figure 2-4. Adding Series Resistance.................................................................................2-13
Figure 2-5. SCXI-1326 Parts Locator Diagram..................................................................2-15
Figure 2-6. SCXI-1162 Rear Signal Connector Pin Assignments......................................2-17
Figure 2-7. Slot-Select Timing Diagram ............................................................................2-21
Figure 2-8. Serial Data Timing Diagram............................................................................2-22
Figure 2-9. Address Handler Timing Diagram...................................................................2-23
Figure 2-10. SCXI-1162 Module ID Register Timing Diagram ..........................................2-24
Figure 2-11. Data Register Read Timing Diagram...............................................................2-25
Figure 3-1. SCXI-1162 Block Diagram..............................................................................3-1
Figure 3-2. SCXIbus Connector Pin Assignment...............................................................3-2
Figure 3-3. Digital Interface Circuitry Block Diagram ......................................................3-4
Figure 3-4. SCXI-1162 Register Circuitry .........................................................................3-5
Figure B-1. SCXI-1162 Rear Signal Connector Pin Assignments......................................B-1
Figure C-1. SCXIbus Connector Pin Assignment...............................................................C-2
Figure D-1. SCXI-1162 Front Connector Pin Assignment .................................................D-2
Figure E-1. SCXI-1340 Installation ....................................................................................E-3
Figure E-2. SCXI-1351 and NB5 Cable Installation...........................................................E-9
Figure E-3. SCXI-1180 Rear Connections..........................................................................E-12
Figure E-4. SCXI-1180 Front Panel Installation.................................................................E-13
Figure E-5. Cover Removal ................................................................................................E-14
Tables
Table 2-1. Digital Signal Connections, Jumper Settings...................................................2-7
Table 2-2. SCXIbus to SCXI-1162 Rear Signal Connector to Data Acquisition Board
Pin Equivalences..............................................................................................2-20
Table 3-1. SCXIbus Equivalents for the Rear Signal Connector ......................................3-4
Table 3-2. SCXI-1162 Channel and Bank Assignments...................................................3-6
Table 4-1. Register Addresses...........................................................................................4-2
Table 5-1. SCXIbus to SCXI-1162 Rear Signal Connector to Data Acquisition Board
Pin Equivalences..............................................................................................5-2
Table E-1. SCXI-1162, MIO-16, and DIO-24 Pinout Equivalences .................................E-2
Table E-2. SCXI-1341 Pin Translations............................................................................E-4
Table E-3. SCXI-1342 Pin Translations............................................................................E-6
Table E-4. SCXI-1162, DIO-96, AT-MIO-16D, and AT-MIO-64F-5
Pinout Equivalences.........................................................................................E-7
Table E-5. SCXI-1348 Pin Translations............................................................................E-10
Table E-6. SCXI-1343 Pin Connections............................................................................E-16

© National Instruments Corporation ix SCXI-1162 User Manual
About This Manual
This manual describes the electrical and mechanical aspects of the SCXI-1162 and contains
information concerning its operation and programming. The SCXI-1162 is a member of the
National Instruments Signal Conditioning eXtensions for Instrumentation (SCXI) Series modules
for the National Instruments data acquisition plug-in boards. This module switches and controls
low-level and power signals. The SCXI-1162 operates as 32 digital input channels, arranged as
eight banks of four channels. Each bank is optically isolated.
This manual describes the installation, basic programming considerations, and theory of
operation for the SCXI-1162.
Organization of This Manual
The SCXI-1162 User Manual is organized as follows:
• Chapter 1, Introduction, describes the SCXI-1162; lists the contents of your SCXI-1162 kit;
describes the optional software, optional equipment, and custom cables; and explains how to
unpack the SCXI-1162 kit.
• Chapter 2, Configuration and Installation, describes the SCXI-1162 jumper configurations,
installation of the SCXI-1162 into the SCXI chassis, signal connections to the SCXI-1162,
and cable wiring.
• Chapter 3, Theory of Operation, contains a functional overview of the SCXI-1162 module
and explains the operation of each functional unit making up the SCXI-1162.
• Chapter 4, Register Descriptions, describes in detail the SCXI-1162 Address Handler, the
Module ID Register, the Data Register, the Parking Registers, and the Slot 0 registers.
• Chapter 5, Programming, contains a functional programming description of the SCXI-1162
and Slot 0.
• Appendix A, Specifications, lists the specifications for the SCXI-1162.
• Appendix B, Rear Signal Connector, describes the pinout and signal names for the
SCXI-1162 50-pin rear signal connector, including a description of each connection.
• Appendix C, SCXIbus Connector, describes the pinout and signal names for the SCXI-1162
SCXIbus connector, including a description of each connection.
• Appendix D, SCXI-1162 Front Connector, describes the pinout and signal names for the
SCXI-1162 front connector, including a description of each connection.
• Appendix E, SCXI-1162 Cabling, describes how to use and install the hardware accessories
for the SCXI-1162.
• Appendix F, Customer Communication, contains forms you can use to request help from
National Instruments or to comment on our products.
• The Glossary contains an alphabetical list and description of terms used in this manual,
including abbreviations, acronyms, metric prefixes, mnemonics, and symbols.

About This Manual
SCXI-1162 User Manual x © National Instruments Corporation
• The Index contains an alphabetical list of key terms and topics in this manual, including the
page where you can find each one.
Conventions Used in This Manual
The following conventions are used in this manual:
DIO board DIO board refers to the National Instruments AT-DIO-32F, MC-DIO-24,
MC-DIO-32F, NB-DIO-24, NB-DIO-96, NB-DIO-32F, PC-DIO 24, and
PC-DIO-96 digital I/O data acquisition boards unless otherwise noted.
DIO-type board DIO-type board refers to National Instruments data acquisition boards that
have only digital inputs and outputs. These boards include the DIO-24,
DIO-32F, and DIO-96 boards unless otherwise noted.
italic Italic text denotes emphasis, a cross reference, or an introduction to a key
concept.
Lab board Lab board refers to the National Instruments Lab-LC, Lab-NB, Lab-PC,
and Lab-PC+ boards unless otherwise noted.
MC MC refers to the Micro Channel series computers.
MIO board MIO board refers to the National Instruments AT-MIO-16, AT-MIO-16D,
AT-MIO-16F-5, AT-MIO-16X, AT-MIO-64F-5, MC-MIO-16,
NB-MIO-16, and NB-MIO-16X multichannel I/O data acquisition boards
unless otherwise noted.
MIO-type board MIO-type board refers to National Instruments data acquisition boards that
have at least analog and digital inputs and outputs. These boards include
the MIO boards, the Lab boards, and the PC-LPM-16 board unless
otherwise noted.
monospace Lowercase text in this font denotes text or characters that are to be literally
input 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, variables, filenames, and extensions, and for statements
and comments taken from program code.
NB NB refers to the NuBus series computers.
PC PC refers to the IBM PC/XT, the IBM PC AT, and compatible computers.
SCXIbus SCXIbus refers to the backplane in the chassis. A signal on the backplane
is referred to as the SCXIbus <signal name> line (or signal). The
SCXIbus descriptor may be omitted when the meaning is clear.
Descriptions of all SCXIbus signals are given in Appendix C, SCXIbus
Connector.
Slot 0 Slot 0 refers to the power supply and control circuitry in the SCXI chassis.

About This Manual
© National Instruments Corporation xi SCXI-1162 User Manual
Abbreviations, acronyms, metric prefixes, mnemonics, symbols, and terms are listed in the
Glossary.
Related Documentation
The following documents contain information that you may find helpful as you read this manual:
•AT-DIO-32F User Manual (part number 320147-01)
• AT-MIO-16 User Manual (part number 320476-01)
• AT-MIO-16D User Manual (part number 320489-01)
•AT-MIO-16F-5 User Manual (part number 320266-01)
•AT-MIO-64F-5 User Manual (part number 320487-01)
•AT-MIO-16X User Manual (part number 320488-01)
•Lab-LC User Manual (part number 320380-01)
•Lab-NB User Manual (part number 320174-01)
•Lab-PC User Manual (part number 320205-01)
•Lab-PC+ User Manual (part number 320502-01)
•MC-DIO-24 User Manual (part number 320129-01)
•MC-DIO-32F User Manual (part number 320128-01)
•MC-MIO-16 User Manual, Revisions A to C (part number 320130-01)
•MC-MIO-16 User Manual, Revision D (part number 320560-01)
•NB-DIO-24 User Manual (part number 320094-01)
•NB-DIO-32F User Manual (part number 320095-01)
•NB-DIO-96 User Manual (part number 320384-01)
•NB-MIO-16 User Manual (part number 320295-01)
•NB-MIO-16X User Manual (part number 320157-01)
•PC-DIO-24 User Manual (part number 320288-01)
•PC-DIO-96 User Manual (part number 320289-01)
•PC-LPM-16 User Manual (part number 320287-01)
•SCXI-1000/1001 User Manual (part number 320423-01)

About This Manual
SCXI-1162 User Manual xii © National Instruments Corporation
Customer Communication
National Instruments wants to receive your comments on our products and manuals. We are
interested in the applications you develop with our products, and we want to help if you have
problems with them. To make it easy for you to contact us, this manual contains comment and
configuration forms for you to complete. These forms are in Appendix F, Customer
Communication, at the end of this manual.

© National Instruments Corporation 1-1 SCXI-1162 User Manual
Chapter 1
Introduction
This chapter describes the SCXI-1162; lists the contents of your SCXI-1162 kit; describes the
optional software, optional equipment, and custom cables; and explains how to unpack the
SCXI-1162 kit.
Figure 1-1 shows the SCXI-1162 module.
Figure 1-1. SCXI-1162 Digital Input Module
The SCXI-1162 module consists of 32 optically isolated digital inputs. The SCXI-1162 is a
module for acquiring digital data where common-mode voltages may be present.
The SCXI-1162 operates with full functionality with National Instruments MIO-16 and
AT-MIO-64F-5 boards; Lab-NB, Lab-PC, Lab-PC+, Lab-LC, and PC-LPM-16 boards; and with
the DIO-24, DIO-32F, and DIO-96 boards. You can also use the SCXI-1162 with other systems
that comply with the specifications given in Chapter 2, Configuration and Installation. You can
control several SCXI-1162s in a single chassis with one data acquisition board.
An additional shielded terminal block, the SCXI-1326, has screw terminals for easy signal
attachment to the SCXI-1162.
With the SCXI-1162, the SCXI chassis can serve as a digital signal monitor in laboratory testing,
production testing, and industrial process monitoring.

Introduction Chapter 1
SCXI-1162 User Manual 1-2 © National Instruments Corporation
What Your Kit Should Contain
The contents of the SCXI-1162 kit (part number 776572-62) are listed as follows.
Kit Component Part Number
SCXI-1162 module 182246-01
SCXI-1162 User Manual 320572-01
If your kit is missing any of the components, contact National Instruments.
Optional Software
This manual contains complete instructions for directly programming the SCXI-1162. You can
order separate software packages for controlling the SCXI-1162 from National Instruments.
When you combine the PC, AT, and MC data acquisition boards with the SCXI-1162, you can
use LabVIEW for Windows or LabWindows®for DOS. LabVIEW and LabWindows are
innovative program development software packages for data acquisition and control applications.
LabVIEW uses graphical programming, whereas LabWindows enhances Microsoft C and
QuickBASIC. Both packages include extensive libraries for data acquisition, instrument control,
data analysis, and graphical data presentation.
Your National Instruments data acquisition board is shipped with the NI-DAQ software.
NI-DAQ has a library of functions that can be called 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, SCXI, RTSI, and self-calibration. NI-DAQ maintains a consistent
software interface among its different versions so you can switch between platforms with
minimal modifications to your code.
You can also use the SCXI-1162, together with the PC, AT, and MC data acquisition boards,
with NI-DAQ software for DOS/Windows/LabWindows. NI-DAQ software for
DOS/Windows/LabWindows comes with language interfaces for Professional BASIC, Turbo
Pascal, Turbo C, Turbo C++, Borland C++, and Microsoft C for DOS; and Visual Basic, Turbo
Pascal, Microsoft C with SDK, and Borland C++ for Windows. NI-DAQ software for
DOS/Windows/LabWindows is on high-density 5.25 in. and 3.5 in. diskettes.
You can use the SCXI-1162, together with the NB Series data acquisition boards, with
LabVIEW for Macintosh, a software system that features interactive graphics, a state-of-the-art
user interface, and a powerful graphical programming language. The LabVIEW Data
Acquisition VI Library, a series of VIs for using LabVIEW with National Instruments boards, is
included with LabVIEW. The LabVIEW Data Acquisition VI Library is functionally equivalent
to the NI-DAQ software for Macintosh.

Chapter 1 Introduction
© National Instruments Corporation 1-3 SCXI-1162 User Manual
You can also use the SCXI-1162, combined with the NB Series data acquisition boards, with
NI-DAQ software for Macintosh. NI-DAQ software for Macintosh, which is shipped with all
National Instruments Macintosh data acquisition boards, comes with language interfaces for
MPW C, THINK C, Pascal, and Microsoft QuickBASIC. Any language that uses Device
Manager Toolbox calls can access NI-DAQ software for Macintosh.
Part numbers for these software products are as follows:
Software Part Number
LabVIEW for Windows 776670-01
LabWindows
Standard package 776473-01
Advanced Analysis Library 776474-01
Standard package with Advanced Analysis Library 776475-01
NI-DAQ software for DOS/Windows/LabWindows 776250-01
LabVIEW for Macintosh 776141-01
NI-DAQ software for Macintosh 776181-01
Optional Equipment
Equipment Part Number
SCXI-1326 front terminal block 776573-26
SCXI-1340 cable assembly 776574-40
SCXI-1341 Lab-NB/Lab-PC/Lab-PC+ cable assembly 776574-41
SCXI-1342 PC-LPM-16 cable assembly 776574-42
SCXI-1343 rear screw terminal adapter 776574-43
SCXI-1344 Lab-LC cable assembly 776574-44
SCXI-1350 multichassis adapter 776575-50
SCXI-1351 one slot extender cable 776575-51
SCXI-1348 DIO-32F cable assembly 776574-48
Standard ribbon cable 0.5 m
1.0 m 180524-05 180524-10
NB5 cable 0.5 m
1.0 m 181304-05 181304-10
Refer to the Signal Connections section in Chapter 2, Configuration and Installation, and to
Appendix E, SCXI-1162 Cabling, for additional information on cabling, connectors, and
adapters.
Custom Cables
The SCXI-1162 rear signal connector is a 50-pin male ribbon-cable header. The manufacturer
part number National Instruments uses for this header is as follows:
• AMP Inc. (part number 1-103310-0)

Introduction Chapter 1
SCXI-1162 User Manual 1-4 © National Instruments Corporation
The mating connector for the SCXI-1162 rear signal connector is a 50-position polarized
ribbon-socket connector with strain relief. National Instruments uses a polarized or keyed
connector to prevent inadvertent upside-down connection to the SCXI-1162. Recommended
manufacturer part numbers for this mating connector are as follows:
• Electronic Products Division/3M (part number 3425-7650)
• T&B/Ansley Corporation (part number 609-5041CE)
Standard 50-conductor 28 AWG stranded ribbon cables that work with these connectors are as
follows:
• Electronic Products Division/3M (part number 3365/50)
• T&B/Ansley Corporation (part number 171-50)
The SCXI-1162 front connector is a special 48-pin DIN C male connector. The manufacturer
part number National Instruments uses for this connector is as follows:
• ERNI Components, Inc. (part number 033-273)
The mating connector for the SCXI-1162 front connector is a special 48-pin reversed DIN C
female connector. National Instruments uses a polarized and keyed connector to prevent
inadvertent upside-down connection to the SCXI-1162. The manufacturer part number National
Instruments uses for this mating connector is as follows:
• ERNI Components, Inc. (part number 913-495)
These connectors were selected to meet UL 1244 for 450 Vrms working isolation.
Unpacking
Your SCXI-1162 module is shipped in an antistatic package to prevent electrostatic damage to
the module. Several components on the module can be damaged by electrostatic discharge. To
avoid such damage in handling the module, take the following precautions:
• Touch the antistatic package to a metal part of your SCXI chassis before removing the
module from the package.
• Remove the module from the package and inspect the module for loose components or any
other sign of damage. Notify National Instruments if the module appears damaged in any
way. Do not install a damaged module into your SCXI chassis.

© National Instruments Corporation 2-1 SCXI-1162 User Manual
Chapter 2
Configuration and Installation
This chapter describes the SCXI-1162 jumper configurations, installation of the SCXI-1162 into
the SCXI chassis, signal connections to the SCXI-1162, and cable wiring.
Module Configuration
You can configure the SCXI-1162 rear connector to send data directly from the inputs in parallel,
or to form a serial communication link with the SCXIbus. You can also configure the rear
connector to connect to a DIO-type or an MIO-type data acquisition board. Set jumpers on the
module to configure the rear connector.
When you are controlling the SCXI-1162 through the SCXIbus and are not using the rear
connector, the positions of the configuration jumpers are irrelevant. However, the module in the
chassis which is cabled to a data acquisition board must be configured to allow reads from
module registers. (Specifically, the module must be configured to send data from the SCXIbus
MISO line to the SERDATOUT pin of the module rear connector. Refer to the user manual for
the SCXI module you are using for information on how to accomplish this.)
The SCXI-1162 includes six user-configurable jumpers and one reserved jumper that are shown
in the parts locator diagram in Figure 2-1.

Chapter 2 Configuration and Installation
© National Instruments Corporation 2-3 SCXI-1162 User Manual
The following warnings contain important safety information concerning hazardous voltages.
Warnings: 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 module or terminal
block, dangerous voltages may exist even when the equipment is turned off. To
avoid dangerous electrical shock, do not perform procedures involving cover or
shield removal unless you are qualified to do so.
Do not operate damaged equipment. The safety protection features built into this
module can become impaired if the module becomes damaged in any way. If it is
damaged, turn the module off and do not use until service-trained personnel can
check its safety. If necessary, return the module to National Instruments for
service and repair to ensure that its safety is not compromised.
Do not substitute parts or modify equipment. Because of the danger of
introducing additional hazards, do not install unauthorized parts or modify the
module. Return the module to National Instruments for service and repair to
ensure that its safety features are not compromised.
When using the terminal block with high common-mode voltages, your signal
wires must be insulated appropriately. National Instruments is not liable for any
damages or injuries resulting from inadequate signal wire insulation.
When connecting or disconnecting signal lines to the SCXI-1326 terminal block
screw terminals, the lines must be powered off to avoid a shock hazard.
Connections, including power signals to ground and vice versa, that exceed any of
the maximum signal ratings on the SCXI-1162 can result in damage to any or all
of the boards connected to the SCXI chassis, to the host computer, and to the
SCXI-1162 module. National Instruments is not liable for any damages or
injuries resulting from incorrect signal connections.
If high voltages (≥42 Vrms) are present, the safety earth ground must be
connected to the strain relief tab. This maintains compliance with UL 1244 and
provides full protection against electric shock when the terminal block is not
connected to the chassis. To connect the safety earth ground to the strain relief
tab, run an earth ground wire in the cable 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.
Jumper Use
All six user-configurable jumpers (W1-W6) on the SCXI-1162 are for digital communication
through the rear connector between the data acquisition board and the SCXI-1162 module. If
you are controlling the SCXI-1162 via the SCXIbus and are not using the rear connector, then
the positions of these jumpers are irrelevant.

Configuration and Installation Chapter 2
SCXI-1162 User Manual 2-4 © National Instruments Corporation
The jumpers are used as follows:
• User-configurable jumpers
- Jumper W1 determines whether only 24 or all 32 lines of the rear connector are driven
when the rear connector is configured for parallel operation. If the rear connector is
configured for serial operation, this jumper is irrelevant.
- Jumper W2 configures the rear connector to either send data in parallel to a DIO board or
to allow serial communication between either a DIO or an MIO board.
- Jumpers W3 and W4 select whether the SCXI-1162 is to be connected to a DIO-type
board or to an MIO-type board. The MIO-type data acquisition boards are National
Instruments boards that have analog inputs and digital inputs and outputs. These boards
include MIO-16 boards and the AT-MIO-64F-5 board; Lab-NB, Lab-PC, Lab-PC+, and
Lab-LC boards; and PC-LPM-16 boards. The DIO-type boards are National Instruments
boards that have only digital inputs and digital outputs. These boards are the DIO-24,
DIO-32F, and DIO-96 boards. If the SCXI-1162 module is controlled via the backplane
the position of these jumpers is irrelevant.
- Jumper W5 connects a pullup resistor to the SERDATOUT signal on the rear signal
connector.
- Jumper W6 carries the SCXIbus MISO line, after buffering, to the SERDATOUT signal
on the rear signal connector.
• Reserved jumper
- Jumper W7 is reserved and should not be connected.
To change the configuration of the module, use the following procedure:
1. Remove the grounding screw of the top cover.
2. Snap out the top cover of the shield by placing a screwdriver in the groove at the bottom of
the module.
3. Remove the jumpers to be changed and replace them on the appropriate pins.
4. Record the new jumper settings on the SCXI-1162 Hardware Configuration Form in
Appendix F.
5. Snap the top cover back in place.
6. Replace the grounding screw to ensure proper shielding.
Jumper W1
Jumper W1 determines the number of lines driven at the rear connector when jumper W2
configures the rear connector for parallel communication. The position of jumper W1 is only
relevant when jumper W2 is set to PAR. Jumper W2 does not affect serial communication;
therefore all 32 channels are always available through serial data transfers. When you connect
the SCXI-1162 to a DIO-32F or to a DIO-96, all 32 lines may be driven. However, when you