National Instruments SCXI-1160 User Manual

SCXI-1160

User Manual

16-Channel Single-Pole Double-Throw (SPDT) Relay Module

March 1999 Edition

Part Number 320513B-01

© Copyright 1992, 1999 National Instruments Corporation.

All Rights Reserved.

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Warranty

The SCXI-1160 is warranted against defects in materials and workmanship for a period of one year from the
date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option,
repair or replace equipment that proves to be defective during the warranty period. This warranty includes parts
and labor.

The media on which you receive National Instruments software are warranted not to fail to execute
programming instructions, due to defects in materials and workmanship, for a period of 90 days from date of
shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or
replace software media that do not execute programming instructions if National Instruments receives notice of
such defects during the warranty period. National Instruments does not warrant that the operation of the
software shall be uninterrupted or error free.

A Return Material Authorization (RMA) number must be obtained from the factory and clearly marked on the
outside of the package before any equipment will be accepted for warranty work. National Instruments will pay
the shipping costs of returning to the owner parts which are covered by warranty.

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

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
OF

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

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 ownerís failure to follow the National
Instruments installation, operation, or maintenance instructions; ownerís modification of the product; ownerís
abuse, misuse, or negligent acts; and power failure or surges, fire, flood, accident, actions of third parties, or
other events outside reasonable control.

. CUSTOMERÍS RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART

NATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER.

. This limitation of the liability of National Instruments will apply regardless of the form of action,

Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or
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whole or in part, without the prior written consent of National Instruments Corporation.

LabVIEW™, NI-DAQ™, and RTSI™ is a trademark of National Instruments Corporation.
Product and company names mentioned herein are trademarks or trade names of their respective companies.

Copyright

Trademarks

WARNING REGARDING MEDICAL AND CLINICAL USE OF

NATIONAL INSTRUMENTS PRODUCTS

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. Applications of National
Instruments products involving medical or clinical treatment can create a potential for death or bodily injury
caused by product failure, or by errors on the part of the user or application designer. 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.

Contents

About This Manual .......................................................................................................... xi

Organization of This Manual ....................................................................................... xi

Conventions Used in This Manual............................................................................... xii

Related Documentation................................................................................................ xiii

Customer Communication ........................................................................................... xiii

Chapter 1
Introduction

What Your Kit Should Contain.................................................................................... 1-2

Optional Software ........................................................................................................ 1-2

Optional Equipment ..................................................................................................... 1-3

Unpacking .................................................................................................................... 1-4

Chapter 2
Configuration and Installation

Module Configuration.................................................................................................. 2-1

Hardware Installation................................................................................................... 2-7

Signal Connections ...................................................................................................... 2-8

........................................................................................................................ 1-1

Custom Cables ................................................................................................. 1-3

..................................................................................... 2-1

Jumper Configuration ...................................................................................... 2-5

Jumper W1 ........................................................................................... 2-5

Jumper W5 ........................................................................................... 2-5

Using Jumpers W1 and W5 ................................................................. 2-5

Using Jumpers W2, W3, and W4......................................................... 2-7

Front Connector ............................................................................................... 2-9

Front Connector Signal Descriptions............................................................... 2-10

Contact Protection for Inductive Load Connections........................................ 2-10

Terminal Block ................................................................................................ 2-12

SCXI-1324 Terminal Block ..................................................... 2-12

Signal Connection. ...................................................... 2-13

SCXI-1324 Installation. ............................................... 2-15

Rear Signal Connector ..................................................................................... 2-15

Rear Signal Connector Signal Descriptions..................................................... 2-17

Digital I/O Signal Connections ............................................................ 2-17

Timing Requirements and Communication Protocol....................................... 2-19

Communication Signals ....................................................................... 2-19

Chapter 3
Theory of Operation

Functional Overview.................................................................................................... 3-1

SCXIbus Connector ......................................................................................... 3-2

SCXIbus Connector Signal Descriptions......................................................... 3-4

Digital Interface ........................................................................................................... 3-5

Digital Control Circuitry.............................................................................................. 3-6

Relay Channels ............................................................................................................ 3-7

© National Instruments Corporation v SCXI-1160 User Manual

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

Chapter 4
Register Descriptions

Register Description..................................................................................................... 4-1

Register Description Format ............................................................................ 4-1

SCXI-1160 Registers ....................................................................................... 4-1

Address Handler............................................................................................... 4-1

Module ID Register.............................................................................. 4-3

Data Register........................................................................................ 4-4

Status Register...................................................................................... 4-5

Parking Register............................................................................................... 4-6

Slot 0 Register Descriptions............................................................................. 4-7

Slot-Select Register.............................................................................. 4-8

Chapter 5
Programming

Programming Considerations....................................................................................... 5-1

Examples...................................................................................................................... 5-3

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

Notation............................................................................................................ 5-1

Register Writes................................................................................................. 5-1

Register Selection and Write Procedure .............................................. 5-2

Initialization ......................................................................................... 5-3

Example 1 ........................................................................................................ 5-4

Example 2 ........................................................................................................ 5-4

Example 3 ........................................................................................................ 5-5

....................................................................................................... 4-1

Appendix A
Specifications

Contact Ratings ........................................................................................................... A-1

Physical ........................................................................................................................ A-2

Operating Environment................................................................................................ A-2

Storage Environment.................................................................................................... A-2

....................................................................................................................... A-1

Appendix B
Rear Signal Connector

Rear Signal Connector Signal Descriptions..................................................... B-2

.................................................................................................... B-1

Appendix C
SCXIbus Connector

SCXIbus Connector Signal Descriptions......................................................... C-3

......................................................................................................... C-1

Appendix D
SCXI-1120 Front Connector

Front Connector Signal Descriptions............................................................... D-2

Appendix E
SCXI-1160 Cabling

SCXI-1340 Cable Assembly........................................................................................ E-1

SCXI-1340 Installation .................................................................................... E-2

SCXI-1341 Lab-NB, Lab-PC, or Lab-PC+ and SCXI-1344 Lab-LC

Cable Assembly ........................................................................................................... E-3

........................................................................................................... E-1

......................................................................................... D-1

SCXI-1160 User Manual vi © National Instruments Corporation

SCXI-1341 and SCXI-1344 Installation .......................................................... E-4

SCXI-1342 PC-LPM-16 Adapter Board...................................................................... E-5

SCXI-1342 Installation .................................................................................... E-6

DIO-96 Board Connection

SCXI-1351 and NB5 Cable Installation.......................................................... E-7

SCXI-1348 DIO-32F Adapter Board........................................................................... E-8

SCXI-1348 Installation ................................................................................................ E-10

SCXI-1180 Feedthrough Panel .................................................................................... E-10

SCXI-1180 Installation .................................................................................... E-10

SCXI-1302 50-Pin Terminal Block ............................................................................. E-12

SCXI-1302 Wiring Procedure.......................................................................... E-12

SCXI-1302 Installation .................................................................................... E-13

SCXI-1351 One-Slot Cable Extender .......................................................................... E-13

SCXI-1351 Installation .................................................................................... E-14

Multiple-Chassis Connections for the SCXI-1160 ...................................................... E-14

SCXI-1350 Multichassis Adapter ................................................................................ E-14

SCXI-1350 Installation .................................................................................... E-14

SCXI-1343 Rear Screw Terminal Adapter .................................................................. E-15

SCXI-1343 Installation .................................................................................... E-16

AT-MIO-16D, and AT-MIO-64F-5 Board Connection...................E-6

Appendix F
Aromat Relay Technical Data

...................................................................................... F-1

Appendix G
Customer Communication

............................................................................................. G-1

Glossary ....................................................................................................................... Glossary-1

Index .................................................................................................................................. Index-1

© National Instruments Corporation vii SCXI-1160 User Manual

Figures

Figure 1-1. SCXI-1160 Relay Module ............................................................................... 1-1

Figure 2-1. SCXI-1160 General Parts Locator Diagram .................................................... 2-2

Figure 2-2. Detailed Parts Locator Diagram....................................................................... 2-3

Figure 2-3. SCXI-1160 Front Connector Pin Assignment ................................................. 2-9

Figure 2-4. Contact Protection Using a Flyback Diode for DC Inductive Loads............... 2-11

Figure 2-5. Arc Suppressor Pad Locations ......................................................................... 2-12

Figure 2-6. SCXI-1324 Parts Locator Diagram.................................................................. 2-14

Figure 2-7. SCXI-1160 Rear Signal Connector Pin Assignment ....................................... 2-16

Figure 2-8. Slot-Select Timing Diagram ............................................................................ 2-20

Figure 2-9. Serial Data Timing Diagram ............................................................................ 2-21

Figure 2-10. Address Handler Timing Diagram................................................................... 2-22

Figure 2-11. Data Register Write Timing Diagram.............................................................. 2-23

Figure 2-12. SCXI-1160 Module ID Register Timing Diagram .......................................... 2-24

Figure 2-13. SCXI-1160 Status Register Timing Diagram .................................................. 2-25

Figure 3-1. SCXI-1160 Block Diagram.............................................................................. 3-1

Figure 3-2. SCXIbus Connector Pin Assignment............................................................... 3-3

Figure 3-3. Digital Interface Circuitry Block Diagram ...................................................... 3-5

Figure 3-4. SCXI-1160 Digital Control.............................................................................. 3-6

Figure B-1. SCXI-1160 Rear Signal Connector Pin Assignment ....................................... B-1

Figure C-1. SCXIbus Connector Pin Assignment............................................................... C-2

Figure D-1. SCXI-1160 Front Connector Pin Assignment ................................................. D-1

Figure E-1. SCXI-1340 Installation .................................................................................... E-3

Figure E-2. SCXI-1351 and NB5 Cable Installation........................................................... E-8

Figure E-3. SCXI-1180 Rear Connections.......................................................................... E-11

Figure E-4. SCXI-1180 Front Panel Installation................................................................. E-12

Figure E-5. SCXI-1350 Cover Removal ............................................................................. E-13

Tables

Table 2-1. Digital Signal Connections and Jumper Settings............................................. 2-6

Table 2-2. COM to NO Arc Suppressor Placement .......................................................... 2-11

Table 2-3. COM to NC Arc Suppressor Placement .......................................................... 2-12

Table 2-4. SCXIbus to SCXI-1160 Rear Signal Connector to Data Acquisition Board

Pin Equivalences .............................................................................................. 2-19

Table 3-1. SCXIbus Equivalents for the Rear Signal Connector ...................................... 3-5

Table 4-1. Register Addresses........................................................................................... 4-2

Table 4-2. Truth Table for Resetting and Setting Relays.................................................. 4-4

Table 5-1. SCXIbus to SCXI-1160 Rear Signal Connector to Data Acquisition

Board Pin Equivalences ................................................................................... 5-2

SCXI-1160 User Manual viii © National Instruments Corporation

Table E-1. SCXI-1160 and Board Pinout Equivalences .................................................... E-2

Table E-2. SCXI-1341 and 1344 Pin Translations ........................................................... E-4

Table E-3. SCXI-1342 Pin Translations ............................................................................ E-5

Table E-4. SCXI-1160 and DIO-96 Board Pinout Equivalences ...................................... E-7

Table E-5. SCXI-1348 Pin Translations ............................................................................ E-9

Table E-6. SCXI-1343 Pin Connections ............................................................................ E-15

© National Instruments Corporation ix SCXI-1160 User Manual

About This Manual

This manual describes the electrical and mechanical aspects of the SCXI-1160 and contains
information concerning its operation and programming. The SCXI-1160 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 is designed for
switching and controlling low-level and power signals. The SCXI-1160 operates as 16 relay
channels. Each channel is isolated and independently configurable.

This manual describes the installation, basic programming considerations, and theory of
operation for the SCXI-1160.

Organization of This Manual

The SCXI-1160 User Manual is organized as follows:

• Chapter 1, Introduction, describes the SCXI-1160; lists the contents of your SCXI-1160 kit;
describes the optional software, optional equipment, and custom cables; and explains how to
unpack the SCXI-1160 kit.

• Chapter 2, Configuration and Installation, describes the SCXI-1160 jumper configurations,
installation of the SCXI-1160 into the SCXI chassis, signal connections to the SCXI-1160,
and cable wiring.

• Chapter 3, Theory of Operation, contains a functional overview of the SCXI-1160 module
and explains the operation of each functional unit making up the SCXI-1160.

• Chapter 4, Register Descriptions, describes in detail the SCXI-1160 Address Handler, the
Module ID Register, the Data Register, the Status Register, and the Slot 0 registers.

• Chapter 5, Programming, contains a functional programming description of the SCXI-1160
and Slot 0.

• Appendix A, Specifications, lists the specifications for the SCXI-1160.

• Appendix B, Rear Signal Connector, describes the pinout and signal names for the
SCXI-1160 50-pin rear signal connector, including a description of each connection.

• Appendix C, SCXIbus Connector, describes the pinout and signal names for the SCXI-1160
96-pin SCXIbus connector, including a description of each connection.

• Appendix D, SCXI-1160 Front Connector, describes the pinout and signal names for the
SCXI-1160 front connector, including a description of each connection.

• Appendix E, SCXI-1160 Cabling, describes how to use and install the hardware accessories
for the SCXI-1160.

• Appendix F, Aromat Relay Technical Data, contains technical data on Aromat Corporation
relays.

© National Instruments Corporation xi SCXI-1160 User Manual

About This Manual

• Appendix G, 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.

• 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,

italic Italic text denotes emphasis, a cross reference, or an introduction to a key

Lab board Lab board refers to the National Instruments Lab-LC, Lab-NB, Lab-PC,

MC MC refers to the Micro Channel series computers.
MIO board MIO board refers to the National Instruments AT-MIO-16,

monospace Lowercase text in this font denotes text or characters that are to be literally

This icon below bold italicized text denotes a caution, which advises
you of precautions to take to avoid injury, data loss, or a system
crash.

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.

concept.

and Lab-PC+ boards unless otherwise noted.

AT-MIO-16F-5, AT-MIO-16X, MC-MIO-16, NB-MIO-16, and
NB-MIO-16X multichannel I/O data acquisition boards unless otherwise
noted.

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.
Abbreviations, acronyms, metric prefixes, mnemonics, symbols, and terms are listed in the

Glossary.

SCXI-1160 User Manual xii © National Instruments Corporation

About This Manual

Related Documentation

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

• AT-DIO-32F User Manual (320147-01)

• AT-MIO-16 User Manual (part number 320476-01)

• AT-MIO-16F-5 User Manual (part number 320266-01)

• 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 (320288-01)

• PC-DIO-96 User Manual (320289-01)

• PC-LPM-16 User Manual (part number 320287-01)

• SCXI-1000/1001 User Manual (part number 320423-01)

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 G, Customer

Communication, at the end of this manual.

© National Instruments Corporation xiii SCXI-1160 User Manual

Chapter 1
Introduction

This chapter describes the SCXI-1160; lists the contents of your SCXI-1160 kit; describes the
optional software, optional equipment, and custom cables; and explains how to unpack the
SCXI-1160 kit.

Figure 1-1 shows the SCXI-1160 module.

The SCXI-1160 module consists of 16 isolated single-pole double-throw (SPDT) or form C
latching relay channels. The SCXI-1160 is a module for switching and controlling.

The SCXI-1160 operates with full functionality with National Instruments MIO-16 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-1160 with other systems that comply with the
specifications given in Chapter 2, Configuration and Installation. You can control several
SCXI-1160s in a single chassis with one data acquisition board.

An additional shielded terminal block has screw terminals for easy signal attachment to the
SCXI-1160.

With the SCXI-1160, the SCXI chassis can serve as a controller or switcher in laboratory testing,
production testing, and industrial process monitoring.

© National Instruments Corporation 1-1 SCXI-1160 User Manual

Figure 1-1. SCXI-1160 Relay Module

Introduction Chapter 1

What Your Kit Should Contain

The contents of the SCXI-1160 kit (part number 776572-60) are listed as follows.

Kit Component Part Number

SCXI-1160 module 182139-01
SCXI-1160 User Manual 320513-01

If your kit is missing any of the components, contact National Instruments.

Optional Software

This manual contains complete instructions for directly programming the SCXI-1160. You can
order separate software packages for controlling the SCXI-1160 from National Instruments.

When you combine the PC, AT, and MC data acquisition boards with the SCXI-1160, 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-1160, 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-1160, 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.

You can also use the SCXI-1160, 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

SCXI-1160 User Manual 1-2 © National Instruments Corporation

Chapter 1 Introduction

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-1324 front terminal block 776573-24
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-1351 one slot extender cable 776575-51
SCXI-1348 DIO-32F cable assembly 776574-48
Standard ribbon cable 0.5 m

1.0 m

NB5 cable 0.5 m

1.0 m

Refer to the Signal Connections section in Chapter 2, Configuration and Installation, and to
Appendix E, SCXI-1160 Cabling, for additional information on cabling, connectors, and
adapters.

180524-05
180524-10
181304-05
181304-10

Custom Cables

The SCXI-1160 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)

© National Instruments Corporation 1-3 SCXI-1160 User Manual

Introduction Chapter 1

The mating connector for the SCXI-1160 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-1160. 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-1160 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 913523)
The mating connector for the SCXI-1160 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-1160. The manufacturer part number National
Instruments uses for this mating connector is as follows:

• ERNI Components, Inc. (part number 913524)

Unpacking

Your SCXI-1160 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.

SCXI-1160 User Manual 1-4 © National Instruments Corporation

Chapter 2
Configuration and Installation

This chapter describes the SCXI-1160 jumper configurations, installation of the SCXI-1160 into
the SCXI chassis, signal connections to the SCXI-1160, and cable wiring.

Module Configuration

The SCXI-1160 includes five jumpers that are shown in the parts locator diagrams in Figures 2-1
and 2-2. Figure 2-1 shows the general parts locator diagram of the SCXI-1160 and Figure 2-2
shows a detailed parts locator diagram of the SCXI-1160.

© National Instruments Corporation 2-1 SCXI-1160 User Manual

Configuration and Installation Chapter 2

The following warnings contain important safety information concerning hazardous voltages.

Caution

!

Do not operate the module in an explosive atmosphere or where there may be
flammable gases or fumes.

Keep away from live circuits. Do not remove equipment covers or shields unless

you are trained to do so. If signal wires are connected to the 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 it 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-1324 terminal block
screw terminals, the lines must be powered off. Potential differences between the
lines and the SCXI-1160 ground create a shock hazard while connecting the lines.

Connections, including power signals to ground and vice versa, that exceed any of
the maximum signal ratings on the SCXI-1160 can result in damage to any or all
of the boards connected to the SCXI chassis, to the host computer, and to the
SCXI-1160 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 wire must be

connected to the safety earth ground solder lug on the SCXI-1324 terminal block

This provides 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.

Use this module only with a UL Listed SCXI chassis.

SCXI-1160 User Manual 2-4 © National Instruments Corporation

Chapter 2 Configuration and Installation

The jumpers are used as follows:

• Jumper W1 connects a pullup resistor to the SERDATOUT signal on the rear signal
connector.

• Jumpers W2, W3, and W4 select whether the SCXI-1160 is to be connected to a DIO
board or to an MIO board. If nothing is cabled to the rear signal connector of the
SCXI-1160, the position of these jumpers is irrelevant.

• Jumper W5 carries the SCXIbus MISO line, after buffering, to the SERDATOUT signal
on the rear signal connector.

Further configuration of the board is software controlled and will be discussed later in this
chapter.

Jumper Configuration

All five jumpers on the SCXI-1160 are for digital communication between the data acquisition
board and the SCXI-1160 module. Only one module per chassis is connected to the data
acquisition board, which allows communication with all other modules. On the other modules,
the jumper settings are irrelevant.

The SCXI-1160 has two jumpers, W1 and W5, dedicated for communication between the
SCXI-1160 and the data acquisition board. Jumpers W2, W3, and W4 indicate to the module
what type of data acquisition board is to be connected to its rear signal connector.

Jumper W1

Position 1 connects a 2.2 kΩ pullup resistor to the SERDATOUT line. This is the factory-default
setting. Position 3 does not connect the pullup resistor to the SERDATOUT line.

Jumper W5

Position 1 connects the SCXIbus MISO line, after buffering, to the SERDATOUT pin of the rear
signal connector. This is the factory-default setting. In this setting, along with the proper setting
of jumper W1, the data acquisition board can read the Module ID Register or the Status Register
of the SCXI-1160. See the Timing Requirements and Communication Protocol section later in
this chapter, and Chapter 4, Register Descriptions, for information on reading the Module ID
Register and the Status Register. See Appendix E, SCXI-1160 Cabling, for the pin equivalences
of the SCXI-1160 rear signal connector and the data acquisition board I/O connector.

Position 3 disconnects SERDATOUT from the SCXIbus MISO line.

Using Jumpers W1 and W5

If a module is not connected to a data acquisition board, the positions of jumpers W1 and W5 are
irrelevant. Jumpers W1 and W5 give the data acquisition board access to the MISO line on the
backplane. You can use the MISO line to read the Module ID Register of modules. National
Instruments software does not use this ability. You must indicate to the software which module

© National Instruments Corporation 2-5 SCXI-1160 User Manual

Configuration and Installation Chapter 2

is in which slot. In addition to reading the Module ID Register, the MISO line on the SCXI-1160
can read the Status Register, which indicates the status of the relays. National Instruments
software uses this feature.

The SERDATOUT line is driven with an open-collector driver, which is a driver that actively
drives low or goes to a high-impedance state, relying on a pullup resistor to make the signal line
go high. When using a single chassis, set both jumpers W1 and W5 in position 1 on the
SCXI-1160 that is connected to the data acquisition board. In this setting, the module drives
MISO to SERDATOUT and connects the necessary pullup resistor to the SERDATOUT line.
When using multiple chassis, set jumper W5 in position 1 on all of the SCXI-1160s that are
cabled to the data acquisition board. Set jumper W1 in position 1 on only one of the SCXI-1160s
that are cabled to the data acquisition board. It does not matter which of the SCXI-1160s that are
cabled to the data acquisition board has the pullup connected. Set jumper W1 in position 3 on all
of the other SCXI-1160 modules that are cabled to the data acquisition board. If too many pullup
resistors are attached to the SERDATOUT line, the drivers cannot drive the line low. See Table
2-1 for the description and configuration of the jumper settings.

Table 2-1. Digital Signal Connections and Jumper Settings

Jumper Description Configuration

W1

W1

W5

W5

Parking position

Factory Setting–Connects pullup to
SERDATOUT

Parking position

Factory setting–Connects MISO to
SERDATOUT

3

•

2

•

1

•

3

•

2

•

1

•

3

•

2

•

1

•

3

•

2

•

1

•

SCXI-1160 User Manual 2-6 © National Instruments Corporation

(continues)

Chapter 2 Configuration and Installation

Table 2-1. Digital Signal Connections and Jumper Settings (Continued)

Jumper Description Configuration

MIO

•

W4

DIO

MIO

•

•

•

W2, W3, W4

Data acquisition board is a DIO type

MIO

•

•

W3

DIO

•

W2

DIO

•

•

board.

MIO

•

W4

DIO

•

MIO

•

•

W2, W3, W4

Data acquisition board is an MIO type

W2

DIO

•

•

MIO

•

W3

DIO

•

•

board.

Using Jumpers W2, W3, and W4

You can use two types of data acquisition boards to communicate with the SCXI-1160. The
multifunction I/O (MIO) type boards are National Instruments boards that have both analog and
digital inputs and outputs. Boards include MIO-16, MIO-16X, MIO-16F-5, Lab Series (Lab-NB,
Lab-PC, Lab-PC+, and Lab-LC), and PC-LPM-16 boards. The DIO type boards are National
Instruments boards that have only digtal inputs and outputs. These boards include the DIO-24,
DIO-32F, and DIO-96.

All three jumpers have labels indicating the DIO and the MIO configurations. If you want to use
the SCXI-1160 with a DIO type board, place all three jumpers in the DIO position. This position
is the factory setting. If you want to use the SCXI-1160 with an MIO type board, place all three
jumpers in the MIO position. If nothing is cabled to the rear signal connector of the SCXI-1160,
the position of these jumpers is irrelevant.

Hardware Installation

You can install the SCXI-1160 in any available SCXI chassis. After you have made any
necessary changes and have verified and recorded the jumper settings on the form in
Appendix G, Customer Communication, you are ready to install the SCXI-1160. The following
are general installation instructions; consult the user manual or technical reference manual of
your SCXI chassis for specific instructions and warnings.

1. Turn off the computer that contains the data acquisition board or disconnect it from your
SCXI chassis.

2. Turn off the SCXI chassis. Do not insert the SCXI-1160 into a chassis that is turned on.

3. Insert the SCXI-1160 into the board guides. Gently guide the module into the back of the
slot until the connectors make good contact. If a cable assembly has already been installed in
the rear of the chassis, the module and cable assembly must be firmly engaged; however, do
not force the module into place.

4. Screw the front mounting panel of the SCXI-1160 to the top and bottom threaded strips of
your SCXI chassis.

© National Instruments Corporation 2-7 SCXI-1160 User Manual

Configuration and Installation Chapter 2

5.If this module is to be connected to an MIO-16 or a DIO-24 data acquisition board, attach the
connector at the metal end of the SCXI-1340 cable assembly to the rear signal connector on
the SCXI-1160 module. Screw the rear panel to the rear threaded strip. Attach the loose end
of the cable to the data acquisition board.

Note:For installation procedures with other SCXI accessories and data acquisition boards,

consult Appendix E, SCXI-1160 Cabling.

6.Check the installation.

7.Turn on the SCXI chassis.

8.Turn on the computer or reconnect it to your chassis.

The SCXI-1160 board is installed and ready for operation.

Signal Connections

This section describes the signal connections to the SCXI-1160 board via the SCXI-1160 front
connector and rear signal connector, and includes specifications and connection instructions for
the SCXI-1160 connector signals.

Note:In high-current applications, the thin layer of gold plating on the relay contact may be

destroyed. Although this will not affect the high current application, you may experience
a high contact resistance in a low-current application and be unable to use the relay.

Caution

!

Connections to and between any terminals of the SCXI-1160 that exceed any of
the maximum ratings of input signals on the SCXI-1160 can result in damage to
the SCXI-1160 module and to the SCXIbus. Maximum input ratings for each
signal are given in this chapter under the discussion of that signal. National
Instruments is not liable for any damages resulting from such signal
connections.

SCXI-1160 User Manual 2-8 © National Instruments Corporation

Chapter 2 Configuration and Installation

Front Connector

Figure 2-3 shows the pin assignments for the SCXI-1160 front connector.

Pin

Number

32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

Signal

Name

COM (0)

NO (0)

COM (1)

NO (1)

COM (2)

NO (2)

COM (3)

NO (3)

COM (4)

NO (4)

COM (5)

NO (5)

COM (6)

NO (6)

COM (7)

NO (7)

COM (8)

NO (8)

COM (9)

NO (9)

COM (10)

NO (10)

COM (11)

NO (11)

COM (12)

NO (12)

COM (13)

NO (13)

COM (14)

NO (14)

COM (15)

NO (15)

Column

A B C

Signal

Name

NC (0)

NC (1)

NC (2)

NC (3)

NC (4)

NC (5)

NC (6)

NC (7)

NC (8)

NC (9)

NC (10)

NC (11)

NC (12)

NC (13)

NC (14)

NC (15)

Figure 2-3. SCXI-1160 Front Connector Pin Assignment

© National Instruments Corporation 2-9 SCXI-1160 User Manual

Configuration and Installation Chapter 2

Front Connector Signal Descriptions

Pin Signal Name Description

A1, A3, A5, A7, NO <15..0> Normally Open Contact – These are the
A9, A11, A13, normally open contacts of the relays
A15, A17, A19, 15 through 0.
A21, A23, A25,
A27, A29, A31

B2, B4, B6, B8, COM <15..0> Common Contact – These are the common
B10, B12, B14, contacts of the relays 15 through 0.
B16, B18, B20,
B22, B24, B26,
B28, B30, B32

C1, C3, C5, C7, NC <15..0> Normally Closed Contact – These are the
C9, C11, C13, normally closed contacts of the relays
C15, C17, C19, 15 through 0.
C21, C23, C25,
C27, C29, C31

All contacts have a working common mode voltage of 250 VAC or VDC. The contact-to­contact breakdown voltage is 750 Vrms. The contact-to-coil breakdown voltage is 1,500 Vrms.
Please refer to the module specifications listed in Appendix A for further details before
connecting the signals to the relay contacts.

Contact Protection for Inductive Load Connections

When inductive loads are connected to the relays, a large counter electromotive force may occur
at relay switching time due to the energy stored in the inductive load. These flyback voltages can
severely damage the relay contacts and greatly shorten the life of the relay.

It is best to limit these flyback voltages at your inductive load by installing a flyback diode for
DC loads or an MOV for AC loads. Refer to the section, 3. Contact Protection, in Appendix F,
Aromat Relay Technical Data, for further details.

In addition, the module contains pads on which you can place an arc suppressor protection circuit
to limit the voltage spike generated during the switching of inductive loads. These pads are
located between the COM position and the NO position and between the COM position and the
NC position of the relays.

SCXI-1160 User Manual 2-10 © National Instruments Corporation

Chapter 2 Configuration and Installation

+

VDC

NO COM

V

-

Inductive Load

Flyback Diode

NC

Figure 2-4. Contact Protection Using a Flyback Diode for DC Inductive Loads

To determine where to place each arc suppressor, refer to Table 2-2 and Table 2-3, which
indicate the channel and suppressor pad assignments.

Table 2-2. COM to NO Arc Suppressor Placement

COM to NO Channel Number Transient Voltage Suppressor

Reference Designator

0 VR1
1 VR3
2 VR5
3 VR7
4 VR9
5 VR11
6 VR13
7 VR15
8 VR17

9 VR19
10 VR21
11 VR23
12 VR25
13 VR27
14 VR29
15 VR31

© National Instruments Corporation 2-11 SCXI-1160 User Manual

Configuration and Installation Chapter 2

Table 2-3. COM to NC Arc Suppressor Placement

COM to NC Channel Number Transient Voltage Suppressor

Reference Designator

0 VR2
1 VR4
2 VR6
3 VR8
4 VR10
5 VR12
6 VR14
7 VR16
8 VR18

9 VR20
10 VR22
11 VR24
12 VR26
13 VR28
14 VR30
15 VR32

Figure 2-5 shows how to connect a transient voltage suppressor for AC and DC inductive loads.

NC

VR2

Relay

COM

VR1

Arc Suppressor Pads

NO

Figure 2-5. Arc Suppressor Pad Locations

Terminal Block

A terminal block with screw terminals is available for easy signal connection to the SCXI-1160
inputs. This kit is listed in the Optional Equipment section in Chapter 1, Introduction.

SCXI-1324 Terminal Block
The SCXI-1324 terminal block consists of a shielded board with supports to connect it to the

SCXI-1160 input connector. There are forty-eight screw terminals for easy signal connection.

SCXI-1160 User Manual 2-12 © National Instruments Corporation

Chapter 2 Configuration and Installation

When connecting your signals to the SCXI-1324 for use with the SCXI-1160, follow the labeling
as indicated in Figure 2-6, SCXI-1324 Parts Locator Diagram.

Signal Connection. To connect the signal to the terminal block, 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 terminal block.

3. Slide the signal wires, one at a time, through the front panel strain relief. Additional
insulation or padding may be added if necessary.

4. Connect the wires to the screw terminals.

5. Tighten the strain relief by tightening the larger screws.

6. Snap the top cover back in place.

7. Replace the grounding screw to ensure proper shielding.

8. Install contact protection as previously described if your load is inductive.

9. Connect the terminal block to the SCXI-1160 front connector as explained in the SCXI-1324
Installation section, the next section in this chapter.

Figure 2-6 shows a parts locator diagram for the SCXI-1324 terminal block.

© National Instruments Corporation 2-13 SCXI-1160 User Manual

Configuration and Installation Chapter 2

SCXI-1324 Installation. To connect the terminal block to the SCXI-1160 front connector, follow
these steps:

1.Connect the SCXI-1160 front connector to its mating connector on the terminal block.

2.Make sure that the SCXI-1160 top and bottom thumbscrews do not obstruct the rear panel of
the terminal block.

3.Tighten the top and bottom screws on the back of the terminal block to hold it securely in
place.

Rear Signal Connector

Note:If you will use the SCXI-1160 with a National Instruments data acquisition board and

cable assembly, you do not need to read the remainder of this chapter. If you will also
use the SCXI-1180 feedthrough panel, the SCXI-1343 rear screw terminal adapter, or the
SCXI-1351 one-slot cable extender with the SCXI-1160, read this section.

SCXI-1160 User Manual 2-15 © National Instruments Corporation

Chapter 2 Configuration and Installation

Figure 2-7 shows the pin assignments for the SCXI-1160 rear signal connector.

1 2
3 4

5 6
7 8

9 10
11 12
13 14
15 16
17 18
19 20
21 22

SERDATIN

DAQD*/A

SLOT0SEL*

(DIO) SERCLK

(MIO) SERCLK

(DIO) SERDATOUT

23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50

DIG GND (MIO)
SERDATOUT (MIO)

DIG GND (DIO)

Figure 2-7. SCXI-1160 Rear Signal Connector Pin Assignment

© National Instruments Corporation 2-16 SCXI-1160 User Manual

Configuration and Installation Chapter 2

Rear Signal Connector Signal Descriptions

Pin Signal Name Description

24 or 50 DIG GND Digital Ground – Supplies the reference for data

acquisition board digital signals and is tied to the
module digital ground. Pin 50 is for DIO type
boards. Pin 24 is for MIO type boards and jumper
W3 selects it.

25 SERDATIN Serial Data In – Taps into the SCXIbus MOSI line

to provide serial input data to a module or Slot 0.

26 or 47 SERDATOUT Serial Data Out – Taps into the SCXIbus MISO line

to accept serial output data from a module. Pin 47
is for DIO type boards. Pin 26 is for MIO type
boards and jumper W2 selects it.

27 DAQD*/A Data Acquisition Board Data/Address Line – Taps

into the SCXIbus D*/A line to indicate to the
module whether the incoming serial stream is data
or address information.

29 SLOT0SEL* Slot 0 Select – Taps into the SCXIbus INTR* line

to indicate whether the information on MOSI is
sent to a module or to Slot 0.

31 or 37 SERCLK Serial Clock – Taps into the SCXIbus

SPICLK line to clock the data on the MOSI and
MISO lines. Pin 31 is for DIO boards. Pin 37 is for

MIO boards and jumper W4 selects it.
All other pins are not connected.
See the Timing Requirements and Communication Protocol section later in this chapter for more

detailed information on timing.
The signals on the rear signal connector are digital I/O signals. Signal connection guidelines for

each of these groups are given in the following section.

Digital I/O Signal Connections

Pins 24 through 27, 29, 31, 37, 47, and 50 constitute the digital I/O lines of the rear signal
connector. They are divided into three categories–the digital input signals, the digital output
signals, and the digital timing signals.

The digital input signals are pins 24 or 50, 25, 27, 29, and 31 or 37. The data acquisition board
uses these pins to configure the SCXI module that the data acquisition board controls.

SCXI-1160 User Manual 2-17 © National Instruments Corporation

Chapter 2 Configuration and Installation

Each digital line emulates the SCXIbus communication signals as follows:

• Pin 25 is SERDATIN and is equivalent to the SCXIbus MOSI serial data input line.

• Pin 27 is DAQD*/A and is equivalent to the SCXIbus D*/A line. It indicates to the module

whether the incoming serial stream on SERDATIN is data (DAQD*/A = 0) or address
(DAQD*/A = 1) information.

• Pin 29 is SLOT0SEL* and is equivalent to the SCXIbus INTR* line. It indicates whether the

data on the SERDATIN line is being sent to Slot 0 (SLOT0SEL* = 0) or to a module
(SLOT0SEL* = 1).

• Pin 24 or 50 is the digital ground reference for the data acquisition board digital signals and

is tied to the module digital ground via jumper W3. Pins 24 and 50 are not tied together.

- Pin 24 is for MIO type boards with jumpers W2, W3, and W4 in the MIO position.

- Pin 50 is for DIO type boards with jumpers W2, W3, and W4 in the DIO position.

• Pin 31 or 37 is SERCLK and is equivalent to the SCXIbus SPICLK line. These pins clock

the serial data on the SERDATIN line into the module registers. Pins 31 and 37 are not tied
together.

- Pin 31 is for DIO type boards with jumpers W2, W3, and W4 in the DIO position.

- Pin 37 is for MIO type boards with jumpers W2, W3, and W4 in the MIO position.

The digital output signal is pin 26 or 47:

• Pin 26 or 47 is SERDATOUT and is equivalent to SCXIbus MISO when jumper W5 is in

position 1. Pins 26 and 47 are not tied together.

- Pin 26 is for MIO type boards with jumpers W2, W3, and W4 in the MIO position.

- Pin 47 is for DIO type boards with jumpers W2, W3, and W4 in the DIO position.

When you configure the SCXI-1160 for an MIO type board, the digital I/O signals of the
SCXI-1160 match the digital I/O lines of the MIO-16 board. When used with an SCXI-1341,
SCXI-1342, or SCXI-1344 cable assembly, the SCXI-1160 signals match the digital lines of the
Lab-NB/Lab-PC/Lab-PC+/Lab-LC boards and the PC-LPM-16 board, respectively. When you
configure the SCXI-1160 for a DIO type board, the digital I/O signals of the SCXI-1160 match
the digital I/O lines of the DIO-24 and DIO-96 boards. When used with an SCXI-1348 cable
assembly, the SCXI-1160 signals match the digital lines of the DIO-32F board.

Table 2-4 lists the pin equivalences. For more information, consult Appendix E, SCXI-1160

Cabling.

© National Instruments Corporation 2-18 SCXI-1160 User Manual

Configuration and Installation Chapter 2

Table 2-4. SCXIbus to SCXI-1160 Rear Signal Connector to Data Acquisition

Board Pin Equivalences

SCXIbus Line

MOSI
D*/A
INTR*
SPICLK
MISO

SCXI-1160 Rear

Signal Connector

SERDATIN
DAQD*/A
SLOT0SEL*
SERCLK
SERDATOUT

MIO-16

ADIO0
ADIO1
ADIO2
EXTSTROBE*
BDIO0

Lab-NB/Lab-PC/

Lab-PC+/Lab-LC

PB4
PB5
PB6
PB7
PC1

PC-LPM-16

DOUT4
DOUT5
DOUT6
DOUT7
DIN6

The following specifications and ratings apply to the digital I/O lines.

Absolute maximum voltage

input rating 5.5 V with respect to DIG GND

Digital input specifications (referenced to DIG GND):

input logic high voltage 2 V minimum

V

IH

input logic low voltage 0.8 V maximum

V

IL

II input current leakage ±1 µA maximum

Digital output specifications (referenced to DIG GND):

PB3
PB2
PB1
PB0
PA0

DIO-24

APB3
APB2
APB1
APB0
APA0

DIO-96

DIOB3
DIOB2
DIOB1
DIOB0
DIOA0

DIO-32F

VOH output logic high voltage 3.7 V minimum at 4 mA maximum

output logic low voltage 0.4 V maximum at 4 mA maximum

V

OL

Timing Requirements and Communication Protocol

Communication Signals

This section describes the methods for communicating on the Serial Peripheral Interface (SPI)
bus and their timing requirements. The communication signals are SERDATIN, DAQD*/A,
SLOT0SEL*, SERDATOUT, and SERCLK. Furthermore, Slot 0 produces SS* according to
data acquisition board programming; therefore SS* timing relationships will also be discussed.
For information on the Slot 0 Slot-Select Register, consult Chapter 4, Register Descriptions.

Use the following data acquisition board determines to which slot it will talk to by writing a slot­select number to Slot 0. In the case of an SCXI-1001 chassis, this write also determines to which
chassis the data acquisition board will talk.

SCXI-1160 User Manual 2-19 © National Instruments Corporation

Chapter 2 Configuration and Installation

Use the following procedure for selecting a slot in a particular chassis. Figure 2-8 illustrates the
timing of this procedure with the example of selecting Slot 11 in Chassis 9. Notice that the
factory-default chassis address for the SCXI-1000 is address 0. For information on changing the
address of your chassis, consult the SCXI-1000/1001 User Manual. An SCXI-1000 chassis will
respond to any chassis number.

SLOT0SEL*
SS*X

Chassis Y

SS*11
Chassis 9

SERCLK

SERDATIN

Tss_dis

Tclk_wait

Tss_en

Tslot0sel*_wait

010011011

Chassis ID = 9 Slot 11

T

ss _ dis

T

_ wait

clk

T

slot0sel* _ wait

T

ss _ en

SLOT0SEL* low to SS* disabled 200 nsec maximum
SLOT0SEL* low to first rising edge on SERCLK 75 nsec minimum

Last rising edge on SERCLK to SLOT0SEL* high 250 nsec minimum
SLOT0SEL* high to SS* enabled 350 nsec maximum

Figure 2-8. Slot-Select Timing Diagram

To write the 16-bit slot-select number to Slot 0, follow these steps:

1. Initial conditions:

SERDATIN = don't care.
DAQD*/A = 1.
SLOT0SEL* = 1.
SERCLK = 1.

2. Clear SLOT0SEL* to 0. This will deassert all SS* lines to all modules in all chassis.

3. For each bit, starting with the MSB, perform the following action:

a. Set SERDATIN = bit to be sent. These bits are the data that are being written to the

Slot-Select Register.
b.SERCLK = 0.
c.SERCLK = 1. This rising edge clocks the data.

© National Instruments Corporation 2-20 SCXI-1160 User Manual

Configuration and Installation Chapter 2

4.Set SLOT0SEL* to 1. This will assert the SS* line of the module whose slot number was
written to Slot 0. If multiple chassis are being used, only the appropriate slot in the chassis
whose address corresponds to the written chassis number will be selected. When no
communication is taking place between the data acquisition board and any modules, write
zero to the Slot-Select Register to ensure that no accidental writes occur.

Figure 2-9 shows the timing requirements on the SERCLK and SERDATIN signals. You must
observe these timing requirements for all communications. T

is a specification of the

delay

SCXI-1160.

T

SERCLK

T

low

high

SERDATIN

SERDATOUT

T

low

T

high

T

setup

T

hold

T

delay

T

setup

T

delay

Minimum low time 65 nsec minimum
Minimum high time 400 nsec minimum
SERDATIN setup time 200 nsec minimum
SERDATIN hold time 200 nsec minimum
SERDATOUT delay 350 nsec maximum

T

hold

Figure 2-9. Serial Data Timing Diagram

After selecting the module slot as previously described, you must write first to the Address
Handler, then to the register of interest for each write or read cycle to the module.

To write to the Address Handler, follow these steps:

1. Initial conditions:

SS* asserted low.
SERDATIN = don't care.
DAQD*/A = 1 (indicates data will be written to the Address Handler).
SLOT0SEL* = 1.
SERCLK = 1 (and has not transitioned since SS* went low).

2. For each bit, starting with the MSB, perform the following action:

Establish the desired SERDATIN level corresponding to this bit.
SERCLK = 0.
SERCLK = 1. This rising edge clocks the data.

These bits are the address of the register of interest.

SCXI-1160 User Manual 2-21 © National Instruments Corporation

Chapter 2 Configuration and Installation

3.Pull DAQD*/A low to deselect the Address Handler and select the register whose address
was written to the Address Handler. This selects a register for writing to or reading from.

Figure 2-10 illustrates a write to the SCXI-1160 Address Handler of the binary pattern:

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1

This pattern is the address of the Data Register.

DAQD*/A

Tdelay

SERCLK

SERDATIN

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Tdelay SERCLK last rising edge to DAQD*/A low 425 nsec

1

Figure 2-10. Address Handler Timing Diagram

After the Address Handler has been written to, an address line of a register has been asserted.
Now you can write to the SCXI-1160 Data Register and read from its Module ID Register or
Status Register using the following protocols. The contents of the Module ID Register are
reinitialized by deasserting Slot-Select. After the 32 bits of data are read from the Module ID
Register, further data will be zeros until reinitialization occurs. The Status Register bit value is
updated at the time the relays switch, and remains low until the relays finish switching.

To write to the Data Register, follow these steps:

1.Initial conditions:

SS* asserted low.
SERDATIN = don't care.
DAQD*/A = 0 (indicates data will be written to a register).
SLOT0SEL* = 1.
SERCLK = 1 (and has not transitioned since DAQD*/A went low).

2.For each bit to be written:

Establish the desired SERDATIN level corresponding to this bit.
SERCLK = 0.
SERCLK = 1. This rising edge clocks the data.

3.Pull DAQD*/A high. This disables further writes to the module Data Register. If you wish,
you can write address FFFF (hexadecimal) to the Address Handler. This selects the Parking
Register and makes the module registers more immune to noise.

© National Instruments Corporation 2-22 SCXI-1160 User Manual

Configuration and Installation Chapter 2

4.Pull SLOT0SEL* low to deassert the SS* line and establish conditions for writing a new
slot-select number to the Slot 0 Slot-Select Register.

5.If you are not selecting another slot, write zero to the Slot 0 Slot-Select Register.

Figure 2-11 illustrates a write to the SCXI-1160 Data Register of the binary pattern:

10000011 00001111 00000000 00000000

Tdelay3

SLOT0SEL*

DAQD*/A

SS*

SERCLK

SERDATIN

Tdelay1

10000011000011110000000000000000

Tdelay1 DAQD*/A low to SERCLK first falling edge
Tdelay2 SERCLK last rising edge to DAQD*/A high
Tdelay3 DAQD*/A high to SLOTSEL* low

Figure 2-11. Data Register Write Timing Diagram

To read from the Module ID Register, follow these steps:

1.Initial conditions:

SS* asserted low.
SERDATIN = don't care.
DAQD*/A = 0.
SLOT0SEL* = 1.
SERCLK = 1 (and has not changed since DAQD*/A went low).

Tdelay2

180 nsec
365 nsec
400 nsec

2.For each bit to be read:

Set SERCLK = 0.
SERCLK = 1. This rising edge clocks the data.
Read the level of the SERDATOUT line.

3.Pull DAQD*/A high. This disables further reads from the Module ID Register. If you wish,
you can write address FFFF (hexadecimal) to the Address Handler. This selects the Parking
Register and makes the module registers more immune to noise.

SCXI-1160 User Manual 2-23 © National Instruments Corporation

Chapter 2 Configuration and Installation

4.Pull SLOT0SEL* low to deassert the SS* line and establish conditions for writing a new
slot-select number to the Slot 0 Slot-Select Register.

5.If you are not selecting another slot, write zero to the Slot 0 Slot-Select Register.

Figure 2-12 illustrates a read of the SCXI-1160 Module ID Register.

SLOT0SEL*

DAQD*/A

SS*

SERCLK

T

SERDATOUT

0000

byte 0 = 12 byte 3 = 0byte 2 = 0byte 1 = 0

11 00000000000000000000000000

delay

Tdelay SS* high to SERDATOUT high 350 nsec

Figure 2-12. SCXI-1160 Module ID Register Timing Diagram

To read from the Status Register, follow these steps:

1.Initial conditions:

SS* asserted low.
SERDATIN = don't care.
DAQD*/A = 0.
SLOT0SEL* = 1.
SERCLK = 1 (and has not changed since DAQD*/A went low).

2.The Status Register of the SCXI-1160 consists of a single bit that the relays control. You do
not need to pulse the SERCLK to read the Status Register:

- Read the level of the SERDATOUT line. If it is low, the relays are switching. If it is

high, the relays are finished switching.

3.Pull DAQD*/A high. This disables further reads from the Status Register. If you wish, you
can write address FFFF (hexadecimal) to the Address Handler. This selects the Parking
Register and makes the module registers more immune to noise.

4.Pull SLOT0SEL* low to deassert the SS* line and establish conditions for writing a new
slot-select number to the Slot 0 Slot-Select Register.

5.If you are not selecting another slot, write zero to the Slot 0 Slot-Select Register.

© National Instruments Corporation 2-24 SCXI-1160 User Manual

Configuration and Installation Chapter 2

Figure 2-13 illustrates a read of the SCXI-1160 Status Register after the relays have switched
states.

SLOT0SEL*

DAQD*/A

SS*

T

switching

SERDATOUT

Relays switching
T

switching

= 20 msec maximum

Relays Finish Switching

Figure 2-13. SCXI-1160 Status Register Timing Diagram

For further details on programming these signals, refer to Chapter 5, Programming.

SCXI-1160 User Manual 2-25 © National Instruments Corporation

Chapter 3
Theory of Operation

This chapter contains a functional overview of the SCXI-1160 module and explains the operation
of each functional unit making up the SCXI-1160.

Functional Overview

The block diagram in Figure 3-1 illustrates the key functional components of the SCXI-1160.

NC(0)

COM(0)

NO(0)

NC(1)

COM(1)

NO(1)

•

•

•

•

•

Front Connector

•

NC(14)

COM(14)

Arc

Suppressor

pads

•

•

•

•

•

•

Relays 0

through 15

Status

Bit

Handler

Address

Module ID Register

•

•

•

•

Data Register

•

Rear Signal Connector

Digital

Interface

NO(14)

NC(15)

COM(15)

NO(15)

© National Instruments Corporation 3-1 SCXI-1160 User Manual

SCXIbus Connector

Figure 3-1. SCXI-1160 Block Diagram

Theory of Operation Chapter 3

The major components of the SCXI-1160 are as follows:

• SCXIbus connector

• Digital interface

• Digital control circuitry

• Relay channels

The SCXI-1160 module is dedicated to switching and controlling power and low-level signal
sources. The theory of operation of each of the SCXI-1160 components is explained in the rest
of this chapter.

SCXIbus Connector

Figure 3-2 shows the pinout of the SCXIbus connector.

SCXI-1160 User Manual 3-2 © National Instruments Corporation

Chapter 3 Theory of Operation

RESET*

MISO

V-

V­CHSGND
CHSGND

V+
V+

+5 V

SPICLK

SS*

A1
B1
A2
B2
A3
B3
A4
B4
A5
B5
A6
B6
A7
B7
A8
B8
A9
B9
A10
B10
A11
B11
A12
B12
A13
B13
A14
B14
A15
B15
A16
B16
A17
B17
A18
B18
A19
B19
A20
B20
A21
B21
A22
B22
A23
B23
A24
B24

D1
C1
D2
C2
D3
C3
D4
C4
D5
C5
D6
C6
D7
C7
D8
C8
D9
C9
D10
C10
D11
C11
D12
C12
D13
C13
D14
C14
D15
C15
D16
C16
D17
C17
D18
C18
D19
C19
D20
C20
D21
C21
D22
C22
D23
C23
D24
C24

INTR*

D*/A

V-

V­CHSGND
CHSGND

V+
V+

+5 V

MOSI

Figure 3-2. SCXIbus Connector Pin Assignment

© National Instruments Corporation 3-3 SCXI-1160 User Manual

Theory of Operation Chapter 3

SCXIbus Connector Signal Descriptions

Pin Signal Name Description

A21, B21, C21, CHSGND Chassis Ground – Digital and analog ground reference.
D21

A19 RESET* Reset – When pulled low, reinitializes the module to its

power-up state. Totem pole. Input.

B19 MISO Master-In-Slave-Out – Transmits data from the module

to the SCXIbus. Open collector. I/O.

C19 D*/A Data/Address – Indicates to the module whether

address information or data information is being sent to
the module on MOSI. Open collector. I/O.

D19 INTR* Interrupt – Active low. Causes data that is on MOSI to

be written to the Slot-Select Register Slot 0. Open
collector. Output.

A20, B20, C20, V- Negative Analog Supply – -18.5 to -25 V.
D20

A22, B22, C22, V+ Positive Analog Supply – +18.5 to +25 V.
D22

A23, D23 +5 V +5 VDC Source – Digital power supply.
B23 SPICLK Serial Peripheral Interface (SPI) Clock – Clocks the

serial data on the MOSI and MISO lines. Open
collector. I/O.

C23 MOSI Master-Out-Slave-In – Transmits data from

the SCXIbus to the module. Open collector. I/O.

B24 SS* Slot Select – When low, enables module

communication over the SCXIbus. Totem pole. Input.
All other pins are not connected.
MOSI, MISO, SPICLK, and SS* form a synchronous communication link that conforms with

SPI using an idle-high clock and second-edge data latching. D*/A, INTR*, and RESET* are
additional control signals.

When the module is in an SCXI-1000 or SCXI-1001 chassis, the data acquisition board, via the
module rear signal connector, must tap into the open-collector backplane signal lines as a master
to write to the module. The signal connections from the rear signal connector to the backplane
are shown in Table 3-1.

SCXI-1160 User Manual 3-4 © National Instruments Corporation

Chapter 3 Theory of Operation

Table 3-1. SCXIbus Equivalents for the Rear Signal Connector

Rear Signal Connector

SCXIbus Equivalent

Signal

SERDATIN MOSI
DAQD*/A D*/A
SLOT0SEL* INTR*
SERCLK SPICLK
SERDATOUT MISO Jumper W5 must be set to position 1

The SCXI-1160 module converts the data acquisition board signals to open-collector signals on
the backplane of the SCXI chassis. For the data acquisition board to talk to a slot, the board must
first assert the SS* for that slot. To do this, assert INTR* low, write a 16-bit number over MOSI
corresponding to the desired slot (and chassis if you are using an SCXI-1001 chassis), and then
release INTR* high. At this point, the SS* of the desired slot is asserted low and the data
acquisition board can communicate with the module in that slot according to the SPI protocol.

Digital Interface

Figure 3-3 shows a diagram of the SCXI-1160 and SCXIbus digital interface circuitry.

Buffered Serial
Data

Buffered Digital
Signal Controls

Figure 3-3. Digital Interface Circuitry Block Diagram

MISO

SCXIbus

INTR*

SPICLK

Digital

Interface

D*/A

MOSI

SS*

SERDATIN

DAQD*/A

SLOT0SEL*

SERCLK

SERDATOUT

Rear Signal Connector

© National Instruments Corporation 3-5 SCXI-1160 User Manual

Theory of Operation Chapter 3

The digital interface circuitry is divided into a data acquisition section and an SCXIbus section.
The SCXI-1160 connects to the SCXIbus via a 4x24 metral receptacle and to the data acquisition
board via a 50-pin ribbon-cable header. The digital interface circuitry buffers the digital signals
from the data acquisition board and the SCXIbus and sends signals back and forth between the
data acquisition board and the SCXIbus.

Digital Control Circuitry

Figure 3-4 diagrams the SCXI-1160 digital control.

Status Register

Address
Handler

Serial Data Out

NC <15..0> NO <15..0>

MOD ID Register

Buffered
Serial Data In

Data Register

Buffered Digital
Control Signals

Figure 3-4. SCXI-1160 Digital Control

The digital control section consists of the Address Handler, the Data Register, the Module ID
Register, and the Status Register.

The Address Handler is the register to which you first write an address to specify with which
write or read register you want to communicate. The Address Handler is a two-byte, serial-in,
parallel-out register with address decoding. Refer to the Timing Requirements and

Communication section in Chapter 2, Configuration and Installation, and to Chapter 4, Register
Descriptions, for further details.

The Data Register is a four-byte, serial-in, parallel-out shift register with relay drive capabilities.
Data is received on the MOSI line from either Slot 0 or the data acquisition board when SS* is
enabled, D*/A indicates data transfer (D*/A low), and the Data Register address is selected in the

SCXI-1160 User Manual 3-6 © National Instruments Corporation

Chapter 3 Theory of Operation

Address Handler. The Data Register controls the state of the SCXI-1160 relays. The complete
descriptions of the register bits are given in Chapter 4, Register Descriptions. Writes to the Data
Register require the following steps:

1. SS* goes low, enabling communication with the board.

2. Write 0001 (hexadecimal) to the Address Handler. This selects the Data Register.

3. D*/A goes low, indicating that the information sent on the MOSI line is data.

4. The serial data is available on MOSI and SPICLK clocks it into the register.

5. SS* goes high and D*/A goes high, indicating the end of communication. This action latches

the Data Register bits.

At reset time or at power up, the state of the Data Register and relays is unknown. To set the
relays to a known state, perform a write to the Data Register.

Note: If a power loss or a reset occurs, the state of the relays is unchanged.
The Module ID Register connects to MISO on the SCXIbus. The Module ID Register is an 8-bit

parallel serial-in, serial-out shift register and an SPI communication adapter. The contents of the
Module ID Register are written onto MISO during the first four bytes of transfer after selecting
the Module ID Register in the Address Handler. Zeros are written to MISO thereafter until the
Module ID Register is deselected. The SCXI-1160 module ID is hex C.

The Status Register is a 1-bit register that indicates whether or not the relays are switching.

Relay Channels

The SCXI-1160 consists of 16 independent one form C relays. Each relay has three connections
at the front connector–the common (COM), the normally closed (NC), and the normally open
(NO) positions, which are available at each relay. To protect the relay contacts from inductive
loads, arc suppressors may be installed at the pads, which are at each relay. Refer to the Contact
Protection for Inductive Load Connections section of Chapter 2, Configuration and Installation,
for further details on contact protection.

All 16 relays are two-coil latching relays. One coil is for resetting and the other is for setting the
relay. The Data Register controls the relays as follows. The 16 LSBs of the Data Register
control the set coils. When the set coil is energized, the COM position connects to the NO
position. The 16 MSBs of the Data Register control the reset coils. When the reset coil is
energized, the COM connects to the NC position. Never energize both coils at the same time.

After a write to the Data Register, all relay coils are driven for a period of time (20 msec
maximum) to ensure that the relays have switched states. Then the Data Register outputs go to a
high-impedance state; this ensures that the heating effect of the relay coils is minimal, thus
reducing the thermal electromotive force (emf) that may be generated across the contacts.

Each relay can be set (the relay COM position connected to the NO position) or reset (the relay
COM position connected to the NC position) without affecting the other relays, or all relays can
change states at the same time. However, each time a relay changes its state, the Data Register is
rewritten to. To reduce power consumption, thermal emf, and help extend the relay life, it is

© National Instruments Corporation 3-7 SCXI-1160 User Manual

Theory of Operation Chapter 3

advisable to avoid energizing the relay coils that will not be changing states. To achieve this,
write zeros in the Data Register locations belonging to the relays that do not need to change
states. Refer to Chapter 4, Register Descriptions, and Chapter 5, Programming, for further
details.

The relays are break-before-make, as long as you do not exceed the specified relay operation
speed. In addition, each relay is fully isolated from the other relays and from earth ground, with
a working common-mode voltage of 250 Vrms and a breakdown of 1,500 Vrms.

Note: It is important to notice that this module has no access to the analog backplane; this

protects the backplane from faults when high voltages are available on the relay contacts.

SCXI-1160 User Manual 3-8 © National Instruments Corporation

Chapter 4
Register Descriptions

This chapter describes in detail the SCXI-1160 Address Handler, the Module ID Register, the
Data Register, the Status Register, and the Slot 0 registers.

Note: If you plan to use a programming software package such as NI-DAQ, LabWindows, or

LabVIEW with your SCXI-1160 board, you do not need to read this chapter.

Register Description

Register Description Format

This register description chapter discusses each of the SCXI-1160 registers and the Slot 0
registers. A detailed bit description of each register is given. The individual register description
gives the type, word size, and bit map of the register, followed by a description of each bit.

The register bit map shows a diagram of the register with the MSB shown on the left (bit 31 for a
32-bit register, bit 15 for a 16-bit register, and bit 7 for an 8-bit register) and the LSB shown on
the right (bit 0). A rectangle is used to represent each bit. Each bit is labeled with a name inside
its rectangle. An asterisk (*) after the bit name indicates that the bit is inverted (negative logic).
The Module ID register has a unique format and is described in the Module ID Register section.

In many of the registers, several bits are labeled with an X, indicating don't care bits. When you
write to a register, you may set or clear these bits without effect.

SCXI-1160 Registers

The SCXI-1160 is a class II module. It has four registers and an address handler. The Module
ID Register is a 4-byte, read-only register that contains the Module ID number of the
SCXI-1160. The Data Register is a 32-bit, write-only register that controls the relay states on the
SCXI-1160. The Status Register is a 1-bit, read-only register that indicates the state of the relays
as either switching or finished switching. The Parking Register is a dummy register located at
address FFFF. The Address Handler is the register that contains the address of the register to be
read from or written to, and is a write-only register.

Address Handler

You must write to the Address Handler at the beginning of each write or read from the
SCXI-1160. Write the address of the register of interest to this handler, which in turn enables the
register of interest. The Address Handler is two bytes long and contains the address of the
register to be read from or written to. The Address Handler is selected when SS* is asserted low
and D*/A indicates an address transfer (D*/A is high). At this time, the address is shifted in the
Address Handler Register, MSB first. Table 4-1 contains a list of register addresses.

© National Instruments Corporation 4-1 SCXI-1160 User Manual

Register Descriptions Chapter 4

Table 4-1. Register Addresses

Address

Register

(Hexadecimal)

0000 Module ID Register
0001 Data Register
0002 Status Register
0003-FFFE Reserved
FFFF Parking Register

After you are finished writing, the D*/A line goes low, indicating a data transfer to a register.
This enables the Address Handler output and selects the appropriate register.

At the end of each communication with the Module ID Register, the Data Register, or the Status
Register, select the Parking Register (write address FFFF to the Address Handler). This
increases the noise immunity of the module when it is in its quiescent state.

After you select the Parking Register, SS* should go high, deselecting the modules and latching
all the data.

At reset or at power up, the Address Handler content is cleared.

SCXI-1160 User Manual 4-2 © National Instruments Corporation

Chapter 4 Register Descriptions

Module ID Register

The Module ID register contains the 4-byte module ID code for the SCXI-1160. This code
number is read on the MISO line whenever the Module ID register is accessed. The bytes appear
least significant byte first. Within each byte, data is sent out MSB first. Additional data
transfers result in all zeros being sent on the MISO line. The Module ID register is reinitialized
to its original value each time it is deselected or at reset or power up. The Module ID Register
address is hexadecimal 0000.

Type: Read-only
Word Size: 4-byte
Bit Map:

Byte 0

76543210
00001100

Byte 1

76543210
00000000

Byte 2

76543210
00000000

Byte 3

76543210
00000000

© National Instruments Corporation 4-3 SCXI-1160 User Manual

Register Descriptions Chapter 4

Data Register

The Data Register contains 32 bits that control the state of each relay of the SCXI-1160.
Whenever the Address Handler selects the Data Register, the Data Register shifts in the data
present on the MOSI line, bit 31 first, and then latches the data when it is deselected. At power
up or reset, the Data Register content is unknown and its outputs are not driving the relay coils.
The Data Register address is hexadecimal 0001. Table 4-2 shows a truth table for setting and
resetting a given relay.

Table 4-2. Truth Table for Resetting and Setting Relays

NC(x) (Reset) NO(x) (Set) Function

0
0
1
1

0
1
0
1

No change
COM connects to NO position
COM connects to NC position

Not valid

Type: Write-only
Word Size: 32-bit
Bit Map:

31 30 29 28 27 26 25 24

NC(15) NC(14) NC(13) NC(12) NC(11) NC(10) NC(9) NC(8)

23 22 21 20 19 18 17 16

NC(7) NC(6) NC(5) NC(4) NC(3) NC(2) NC(1) NC(0)

15 14 13 12 11 10 9 8

NO(15) NO(14) NO(13) NO(12) NO(11) NO(10) NO(9) NO(8)

76543210

NO(7) NO(6) NO(5) NO(4) NO(3) NO(2) NO(1) NO(0)

Bit Name Descripion

31-16 NC<15..0> Normally Closed (x) – These bits determine the state of the

15-0 NO<15..0> Normally Open (x) – These bits determine the state

Note: A value of NC(x) = 1 and NO(x) = 1 is not valid. x indicates a given relay number.

SCXI-1160 User Manual 4-4 © National Instruments Corporation

relays. If set to 0, the relays stay in their previous positions
or respond to the NO(x) state. If set to 1 and the NO(x) is
set to 0, the NO position on the relay opens and the COM
connects to the NC position.

of the relays. If set to 0, the relays stay in their previous
positions or respond to the NC(x). If set to 1 and the NC(x)
is set to 0, the NC position on the relay opens and the COM
connects to the NO position.

Chapter 4 Register Descriptions

Status Register

The Status Register is a 1-bit read-only register that is located at address 0002 (hexadecimal).
When this bit is high, it indicates that the relays are finished switching and you can perform
further operations. If this bit is low, the relays are still switching; wait until the status bit goes
high again before you perform any further task with these relays.

After each write operation to the Data Register, it is recommended that you poll and check the
Status Register. Select the Status Register in the same manner as the other two registers by
writing its address to the Address Handler. If you do not want to poll the Status Register, you
must make sure that at least 20 msec have elapsed since the last write to the Data Register before
you perform any new operations on the relays.

At reset or power up, the Status Register bit is set high (relays are not switching).

© National Instruments Corporation 4-5 SCXI-1160 User Manual

Register Descriptions Chapter 4

Parking Register

This register is a dummy register that you should select after the end of a read or write operation.
Selecting the Parking Register places the module in a state insensitive to noise and to ESD,
which may corrupt the Data Register content and cause the relays to change state.

Select the Parking Register by writing FFFF (hexadecimal) to the Address Handler.

SCXI-1160 User Manual 4-6 © National Instruments Corporation

Chapter 4 Register Descriptions

Slot 0 Register Descriptions

Slot 0 has three registers–the FIFO Register, the Hardscan Register and the Slot-Select Register.
Only the Slot-Select Register is of interest. The Slot-Select Register is a 16-bit, write-only
register that determines with which slot the data acquisition board speaks when SLOT0SEL* is
released high. In the case of the SCXI-1001 chassis, the Slot-Select Register also determines in
which chassis the desired slot is. Write to the Slot-Select Register using the SLOT0SEL* line.
Maintain software copies of the Slot-Select Register.

If you are using multiple chassis, it is important to understand the architecture of the Slot-Select
Register. Although each chassis has its own physical Slot-Select Register, all are written to at
the same time. The jumper settings in Slot 0 of a chassis determine with which chassis number
Slot 0 is identified. From the software perspective, only one Slot-Select Register exists in a
system composed of multiple chassis.

© National Instruments Corporation 4-7 SCXI-1160 User Manual

Register Descriptions Chapter 4

Slot-Select Register

The Slot-Select Register contains 16 bits that determine which module in which chassis is
enabled for communication when the SLOT0SEL* line is high. An SCXI-1000 chassis selects
the appropriate module in its chassis, regardless of the chassis number written. The Slot-Select
Register shifts in the data present on the MOSI line, bit 16 first, when SLOT0SEL* is low.

Type: Write-only
Word Size: 16-bit
Bit Map:

15 14 13 12 11 10 9 8

X X X X X X X CHS4

76543210

CHS3 CHS2 CHS1 CHS0 SL3 SL2 SL1 SL0

Bit Name Description

15-9 X Don't care bits – Unused.
8-4 CHS<4..0> Chassis Bit 4 through 0 – These bits determine which

chassis is selected. On the SCXI-1000 chassis, these are
don't care bits.

3-0 SL<3..0> Slot Bit 3 through 0 – These bits determine which slot in

the selected chassis is selected.

SCXI-1160 User Manual 4-8 © National Instruments Corporation

Chapter 5
Programming

This chapter contains a functional programming description of the SCXI-1160 and Slot 0.
Note: If you plan to use a programming software package such as NI-DAQ, LabWindows, or

LabVIEW with your SCXI-1160 board, you do not need to read this chapter.

Programming Considerations

Programming the SCXI-1160 involves writing to the Data Register. Programming the data
acquisition boards involves writes to their registers. See your data acquisition board user manual
for more information. The programming instructions list the sequence of steps to take. The
instructions are language independent; that is, they instruct you to write a value to a given
register without presenting the actual code.

Notation

For the bit patterns to be written, the following symbols are used:

0 binary zero
1 binary one
X don't care; either zero or one may be written

The bit patterns are presented MSB first, left to right.

Register Writes

This section describes how to write to the Data Register including the procedure for writing to
the Slot-Select Register to select the appropriate slot. For timing specifics, refer to the Timing
Requirements and Communication Protocol section in Chapter 2, Configuration and Installation.
The rear signal connector pin equivalences to the different National Instruments data acquisition
boards are given in Table 5-1. See also Appendix E, SCXI-1160 Cabling. The Data Register is a
write-only register.

The different bits in this register control independent relays. There are times when you may
want to set or reset a specific relay or relays without affecting the remaining relays. However, a
write to the Data Register affects all relays simultaneously. You cannot read the register to
determine which relays have been set or reset in the past; therefore, you should maintain a
software copy of the relay states. You can then read the software copy to determine the status of
the relays. To change the state of a single relay without disturbing the remaining relays, change
the bits that control the relay coils of interest, clear all other bits (no change in states), and
rewrite to the Data Register.

© National Instruments Corporation 5-1 SCXI-1160 User Manual

Programming Chapter 5

Table 5-1. SCXIbus to SCXI-1160 Rear Signal Connector to Data Acquisition Board Pin

Equivalences

SCXIbus Line

MOSI
D*/A
INTR*
SPICLK
MISO

SCXI-1160 Rear

Signal Connector

SERDATIN
DAQD*/A
SLOT0SEL*
SERCLK
SERDATOUT

MIO-16

ADIO0
ADIO1
ADIO2
EXTSTROBE*
BDIO0

Lab-NB/Lab-PC/

Lab-PC+/Lab-LC

PB4
PB5
PB6
PB7
PC1

PC-LPM-16

DOUT4
DOUT5
DOUT6
DOUT7
DIN6

PB3
PB2
PB1
PB0
PA0

DIO-24

APB3
APB2
APB1
APB0
APA0

DIO-96

Register Selection and Write Procedure

1. Select the slot of the module to be written to. Initial conditions:

SERDATIN = X.
DAQD*/A = 1.
SLOT0SEL* = 1.
SERCLK = 1.

2. Clear SLOT0SEL* to 0. This deasserts all SS* lines to all modules in all chassis.

3. For each bit, starting with the MSB (bit 15), do the following:

a. Set SERDATIN = bit to be sent. These bits are the data that is written to the

Slot-Select Register.

DIO-32F

DIOB3
DIOB2
DIOB1
DIOB0
DIOA0

b. Clear SERCLK to 0.
c. Set SERCLK to 1. This rising edge clocks the data. If you are using an MIO-16 board,

writing to the EXTSTROBE* register pulses EXTSTROBE* low and then high,
accomplishing steps 3b and 3c.

4. Set SLOT0SEL* to 1. This asserts the SS* line of the module whose slot number was

written to Slot 0. If you are using multiple chassis, only the appropriate slot in the chassis
whose address corresponds to the written chassis number is automatically selected. When no
communication is taking place between the data acquisition board and any modules, write
zero to the Slot-Select Register to ensure that no accidental writes occur.

SCXI-1160 User Manual 5-2 © National Instruments Corporation

Chapter 5 Programming

5. If you are writing to a Data Register, you must first write to the Address Handler address

0001 (hexadecimal):
a. Establish the desired SERDATIN level corresponding to this bit.
b. Clear SERCLK to 0.
c. Set SERCLK to 1 (clock the data). If you are using an MIO-16 board, writing to the

EXTSTROBE* register pulses EXTSTROBE* low and then high, accomplishing
steps 5b and 5c.

d. After you have written all the address bits, clear DAQD*/A to 0. This selects the Data

Register and the data on the MOSI line is written to it.

6. For each bit to be written to the Data Register:

a. Establish the desired SERDATIN level corresponding to this bit.
b. Clear SERCLK to 0.
c. Set SERCLK to 1 (clock the data). If you are using an MIO-16 board, writing to the

EXTSTROBE* register pulses EXTSTROBE* low and then high, accomplishing
steps 6b and 6c.

d. After clocking the last data bit, if you do not want to write to or read another register,

write hexadecimal address FFFF to the Address Handler to increase noise immunity of
the module when it is in the quiescent state. This also latches the data into the Data
Register. Selecting another register also latches the data in the Data Register.

7. Pull SLOT0SEL* low to deassert the SS* line and establish conditions for writing a new slot-

select number to the Slot 0 Slot-Select Register.

8. If you are not selecting another slot, write zero to the Slot 0 Slot-Select Register. If you are

selecting another slot, repeat the procedure starting at step 3.

For a timing illustration of a Data Register write, see Figure 2-11, Data Register Write Timing
Diagram.

Initialization

The SCXI-1160 powers up with its Data Register content unknown. If you reset the chassis, the
Data Register content stays unchanged and the relays maintain their previous states.

Examples

This section describes how to program the SCXI-1160, either alone or in conjunction with other
modules.

The following examples are intended to aid your understanding of module and Slot 0
programming. It will be helpful to refer to the bit descriptions for the Data Register, Status
Register, and Address Handler in Chapter 4, Register Descriptions.

© National Instruments Corporation 5-3 SCXI-1160 User Manual

Programming Chapter 5

Example 1

You want to set all the relays in their NC position that are connected to their COM position on an
SCXI-1160 in Slot 1 of an SCXI-1000 chassis. The SCXI-1160 is directly cabled to a data
acquisition board.

The programming steps are as follows:

1. Select the Status Register and check to make sure the relays are not switching. Refer to

Chapter 4, Register Descriptions, and to the section Timing Requirements and
Communication Protocol in Chapter 2, Configuration and Installation.

2. Following the procedure given in the Register Writes section of this chapter, write

11111111 11111111 00000000 00000000 to the Data Register of the SCXI-1160
in Slot 1.

Example 2

An SCXI-1000 chassis has four SCXI-1160 modules in Slots 1, 2, 3, and 4. The SCXI-1160 in
Slot 4 is cabled to the data acquisition board. You want to connect the NO position to the COM
position on all of the modules and leave all the other channels unchanged. The channels of
interest in each slot are as follows:

• Channel 3 on the SCXI-1160 in Slot 1

• Channels 0 through 2 on the SCXI-1160 in Slot 4

• Channels 10, 7, 5, and 3 on the SCXI-1160 in Slot 3
The programming steps are as follows:

1. Following the procedure given in the Register Writes section of this chapter, write

00000000 00000000 00000000 00001000 to the Data Register of the SCXI-1160
in Slot 1.

2. Following the procedure given in the Register Writes section of this chapter, write

00000000 00000000 00000000 00000111 to the Data Register of the SCXI-1160
in Slot 4.

3. Following the procedure given in the Register Writes section of this chapter, write

00000000 00000000 00000100 10101000 to the Data Register of the SCXI-1160
in Slot 3.

SCXI-1160 User Manual 5-4 © National Instruments Corporation

Chapter 5 Programming

Example 3

You have a multichassis system with an SCXI-1160 in Slot 4 of chassis 1, and another
SCXI-1160 in Slot 11 of chassis 2. You want to do the following:

1. In chassis 1, connect the NC position to the COM position on channels 1, 5, and 8, and

connect the NO position to the COM position on channels 3 and 4.

2. In chassis 2, connect the NC position to the COM position on channels 0 through 7, and

connect the NO position to the COM position on channels 8 through 15.

Leave all other channels unchanged.

Assuming that the modules are correctly cabled and jumpers W5 and W1 are correctly set, do the
following:

1. Select chassis 1, Slot 4 as described in the Register Writes section of this chapter.

2. Following the procedure given in the Register Writes section of this chapter, write

00000001 00100010 00000000 00011000.

3. Select chassis 2, Slot 11 as described in the Register Writes section of this chapter.

4. Following the procedure given in the Register Writes section of this chapter, write

00000000 11111111 11111111 00000000.

© National Instruments Corporation 5-5 SCXI-1160 User Manual

Appendix A
Specifications

This appendix lists the specifications for the SCXI-1160. These are typical at 25° C and 50%
humidity unless otherwise stated. The operating temperature range is 0° to 50° C.

Contact Ratings

Switching power (resistive load)

AC 500 VA maximum
DC 60 W maximum for V ≤30 V

30 W maximum for V > 30 V
Switching voltage 250 VAC or 48 VDC maximum
Switching current 2 A maximum per channel
Channel on resistance 75 mΩ

Minimum switching capacity 100 µA at 100 mVDC
Contact material Gold-clad silver alloy

Life
Note: Relays are subject to normal wear based on the number of operations.

Mechanical (at 50 cps) 108 operations minimum
Electrical (at 20 cpm) 105 at 2 A 250 VAC

2x105 at 2 A 30 VDC
Working isolation

Terminal to terminal 250 Vrms
Terminal to earth 250 Vrms

Offset voltage 3 µV typical
Maximum speed 20 operations per minute at maximum load

50 operations per second at low-level loads

(1 mA 1 VDC)
Set and reset time 10 msec

© National Instruments Corporation A-1 SCXI-1160 User Manual

Specifications Appendix A

Physical

Dimensions 1.2 by 6.8 by 8.0 in.
Connectors 50-pin male ribbon-cable rear connector

48-pin DIN C male front connector

(48-screw terminal adapter available)

Operating Environment

Temperature 0° to 50° C
Relative humidity 5% to 90% at 35° C

Storage Environment

Temperature -20° to 70° C
Relative humidity 5% to 90% noncondensing

Safety

Designed in accordance with UL 3121-1 for installation

category II, pollution degree 2, for altitudes up to

2000 m.

SCXI-1160 User Manual A-2 © National Instruments Corporation

Appendix B
Rear Signal Connector

This appendix describes the pinout and signal names for the SCXI-1160 50-pin rear signal
connector, including a description of each connection.

Figure B-1 shows the pin assignments for the SCXI-1160 rear signal connector.

1 2
3 4

5 6
7 8

9 10
11 12
13 14
15 16

SERDATIN

DAQD*/A

SLOT0SEL*

(DIO) SERCLK

(MIO) SERCLK

(DIO) SERDATOUT

17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50

DIG GND (MIO)
SERDATOUT (MIO)

DIG GND (DIO)

Figure B-1. SCXI-1160 Rear Signal Connector Pin Assignment

© National Instruments Corporation B-1 SCXI-1160 User Manual

Rear Signal Connector Appendix B

Rear Signal Connector Signal Descriptions

Pin Signal Name Description

24 or 50 DIG GND Digital Ground – Supplies the reference for data

acquisition board digital signals and is tied to the
module digital ground. Pin 50 is for DIO boards.
Pin 24 is for MIO boards and jumper W3 selects it.

25 SERDATIN Serial Data In – Taps into the SCXIbus MOSI line

to provide serial input data to a module or Slot 0.

26 or 47 SERDATOUT Serial Data Out – Taps into the SCXIbus MISO line

to accept serial output data from a module. Pin 47
is for DIO boards. Pin 26 is for MIO boards and
jumper W2 selects it.

27 DAQD*/A Data Acquisition Board Data/Address Line – Taps

into the SCXIbus D*/A line to indicate to the
module whether the incoming serial stream is data
or address information.

29 SLOT0SEL* Slot 0 Select – Taps into the SCXIbus INTR* line

to indicate whether the information on MOSI is
sent to a module or to Slot 0.

31 or 37 SERCLK Serial Clock – Taps into the SCXIbus

SPICLK line to clock the data on the MOSI and
MISO lines. Pin 31 is for DIO boards. Pin 37 is for
MIO boards and jumper W4 selects it.

See the Timing Requirements and Communication Protocol section in Chapter 2, Configuration

and Installation, for more detailed information on timing.

SCXI-1160 User Manual B-2 © National Instruments Corporation

Appendix C
SCXIbus Connector

This appendix describes the pinout and signal names for the SCXI-1160 96-pin SCXIbus
connector, including a description of each connection.

Figure C-1 shows the pinout of the SCXI-1160 SCXIbus connector.

© National Instruments Corporation C-1 SCXI-1160 User Manual

SCXIbus Connector Appendix C

RESET*

MISO

V-

V­CHSGND
CHSGND

V+
V+

+5 V

SPICLK

SS*

A1
B1
A2
B2
A3
B3
A4
B4
A5
B5
A6
B6
A7
B7
A8
B8
A9
B9
A10
B10
A11
B11
A12
B12
A13
B13
A14
B14
A15
B15
A16
B16
A17
B17
A18
B18
A19
B19
A20
B20
A21
B21
A22
B22
A23
B23
A24
B24

D1
C1
D2
C2
D3
C3
D4
C4
D5
C5
D6
C6
D7
C7
D8
C8
D9
C9
D10
C10
D11
C11
D12
C12
D13
C13
D14
C14
D15
C15
D16
C16
D17
C17
D18
C18
D19
C19
D20
C20
D21
C21
D22
C22
D23
C23
D24
C24

INTR*

D*/A

V-

V­CHSGND
CHSGND

V+
V+

+5 V

MOSI

Figure C-1. SCXIbus Connector Pin Assignment

SCXI-1160 User Manual C-2 © National Instruments Corporation

Appendix C SCXIbus Connector

SCXIbus Connector Signal Descriptions

Pin Signal Name Description

A21, B21, C21, CHSGND Chassis Ground – Digital and analog ground reference.
D21

A19 RESET* Reset – When pulled low, reinitializes the module to its

power-up state. Totem pole. Input.

B19 MISO Master-In-Slave-Out – Transmits data from the module

to the SCXIbus. Open collector. I/O.

C19 D*/A Data/Address – Indicates to the module whether

address information or data information is being sent to
the module on MOSI. Open collector. I/O.

D19 INTR* Interrupt – Active low. Causes data that is on MOSI to

be written to the Slot-Select Register Slot 0. Open
collector. Output.

A20, B20, C20, V- Negative Analog Supply – -18.5 to -25 V.
D20

A22, B22, C22, V+ Positive Analog Supply – +18.5 to +25 V.
D22

A23, D23 +5 V +5 VDC Source – Digital power supply.
B23 SPICLK Serial Peripheral Interface (SPI) Clock – Clocks the

serial data on the MOSI and MISO lines. Open
collector. I/O.

C23 MOSI Master-Out-Slave-In – Transmits data from

the SCXIbus to the module. Open collector. I/O.

B24 SS* Slot Select – When low, enables module

communication over the SCXIbus. Totem pole. Input.
All other pins are not connected.
Further information is given in Chapter 3, Theory of Operation.

© National Instruments Corporation C-3 SCXI-1160 User Manual

Appendix D
SCXI-1160 Front Connector

This appendix describes the pinout and signal names for the SCXI-1160 front connector,
including a description of each connection.

Figure D-1 shows the pin assignments for the SCXI-1160 front connector.

Pin

Number

32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

Signal

Name

COM (0)

NO (0)

COM (1)

NO (1)

COM (2)

NO (2)

COM (3)

NO (3)

COM (4)

NO (4)

COM (5)

NO (5)

COM (6)

NO (6)

COM (7)

NO (7)

COM (8)

NO (8)

COM (9)

NO (9)

COM (10)

NO (10)

COM (11)

NO (11)

COM (12)

NO (12)

COM (13)

NO (13)

COM (14)

NO (14)

COM (15)

NO (15)

Column

A B C

Signal

Name

NC (0)

NC (1)

NC (2)

NC (3)

NC (4)

NC (5)

NC (6)

NC (7)

NC (8)

NC (9)

NC (10)

NC (11)

NC (12)

NC (13)

NC (14)

NC (15)

Figure D-1. SCXI-1160 Front Connector Pin Assignment

© National Instruments Corporation D-1 SCXI-1160 User Manual

SCXI-1160 Front Connector Appendix D

Front Connector Signal Descriptions

Pin Signal Name Description

A1, A3, A5, A7, NO <15..0> Normally Open Contact – These are the
A9, A11, A13, normally open contacts of the relays
A15, A17, A19, 15 through 0.
A21, A23, A25,
A27, A29, A31

B2, B4, B6, B8, COM <15..0> Common Contact – These are the common
B10, B12, B14, contacts of the relays 15 through 0.
B16, B18, B20,
B22, B24, B26,
B28, B30, B32

C1, C3, C5, C7, NC <15..0> Normally Closed Contact – These are the
C9, C11, C13, normally closed contacts of the relays
C15, C17, C19, 15 through 0.
C21, C23, C25,
C27, C29, C31

Further information is given in Chapter 2, Configuration and Installation.

SCXI-1160 User Manual D-2 © National Instruments Corporation

Appendix E
SCXI-1160 Cabling

This appendix describes how to use and install the hardware accessories for the SCXI-1160:

• SCXI-1340 cable assembly

• SCXI-1341 Lab-NB, Lab-PC, and Lab-PC+ cable assembly

• SCXI-1342 PC-LPM-16 cable assembly

• SCXI-1344 Lab-LC cable assembly

• SCXI-1348 DIO-32 cable assembly

• SCXI-1180 feedthrough panel

• SCXI-1302 50-pin terminal block

• SCXI-1351 one-slot cable extender

• SCXI-1343 screw terminal adapter

SCXI-1340 Cable Assembly

The SCXI-1340 cable assembly connects an MIO-16 or DIO-24 board to an SCXI-1160 module.
It consists of a 50-conductor ribbon cable that has a 50-pin female connector at one end that
connects to the I/O connector of the data acquisition board, and a mounting bracket at the other
end. Attached to the mounting bracket is the 50-pin female mounting bracket connector that
connects to the rear signal connector of the module. A male breakout connector is near the
mounting bracket on the ribbon cable. You can use this male breakout connector to extend the
signals of the MIO-16 or DIO-24 board to an SCXI-1180 feedthrough panel or an SCXI-1181
breadboard module. All 50 pins from the MIO-16 or DIO-24 board go straight to the rear signal
connector. You can use a standard 50-pin ribbon cable in lieu of the SCXI-1340 cable assembly.

The SCXI-1340 has the following advantages over the ribbon cable:

• The SCXI-1340 produces strain relief so that you cannot accidentally disconnect the cable.

• The SCXI-1340 includes a mounting bracket that mounts to the chassis so that you can

remove and reinsert the module without explicitly removing the cable from the back of the
chassis. This is especially useful when the SCXI chassis is rack mounted, making rear access
difficult.

• The SCXI-1340 has an extra male breakout connector for use with the SCXI-1180

feedthrough panel or additional modules or breadboards that need a direct connection to the
MIO-16 or DIO-24 board.

© National Instruments Corporation E-1 SCXI-1160 User Manual

SCXI-1160 Cabling Appendix E

• The SCXI-1340 rear panel gives the module and the chassis both mechanical and electrical

shielding.

Table E-1 lists the pin equivalences of the MIO-16 and DIO-24 boards and the SCXI-1160.

Table E-1. SCXI-1160 and Board Pinout Equivalences

Pin SCXI-1160 Rear Signal

Connector

MIO-16 Board

Equivalent

24 DIG GND (MIO) DIG GND
25 SERDATIN ADIO0 PB3
26 SERDATOUT (MIO) BDIO0
27 DAQD*/A ADIO1 PB2
29 SLOT0SEL* ADIO2 PB1
31 SERCLK (DIO) PB0
37 SERCLK (MIO) EXTSTROBE*
47 SERDATOUT (DIO) PA0
50 DIG GND (DIO) DIG GND

No other pins are connected on the SCXI-1160.

SCXI-1340 Installation

Follow these steps to install the SCXI-1340:

1. Make sure that the computer and the SCXI chassis are turned off.

DIO-24 Board

Equivalent

2. Install the SCXI module in the chassis.

3. Plug the mounting bracket connector onto the module rear signal connector (see Figure E-1).

An alignment tab on the bracket enters the upper board guide of the chassis.

4. Screw the mounting bracket to the threaded strips in the rear of the chassis.

5. Connect the loose end of the cable assembly to the MIO-16 or DIO-24 board rear signal

connector.
Check the installation.
After step 1, the order of these steps is not critical; however, it is easier to locate the correct

position for the mounting bracket with a module installed in the chassis. If you are attaching a
cable to the breakout connector, installation is easiest if you attach the second cable before
installing the SCXI-1340.

SCXI-1160 User Manual E-2 © National Instruments Corporation

Appendix E SCXI-1160 Cabling

Mounting Bracket
Connector

Step 3

SCXI-1160 Rear
Signal Connector

Step 4

Step 4

Mounting Bracket

Rear Panel

Step 5

50-Pin Female

Connector to

MIO-16 or

DIO-24 Board

Male Breakout

Connector

Figure E-1. SCXI-1340 Installation

SCXI-1341 Lab-NB, Lab-PC, or Lab-PC+ and SCXI-1344
Lab-LC Cable Assembly

The SCXI-1341 Lab-NB, Lab-PC, or Lab-PC+ cable assembly connects a Lab-NB, Lab-PC, or
Lab-PC+ board to an SCXI-1160 module. The SCXI-1344 Lab-LC cable assembly connects a
Lab-LC board to an SCXI-1160 module. The SCXI-1341 and SCXI-1344 cable assemblies
consist of two pieces–a 50-conductor ribbon cable that connects the Lab board to the rear
connector of the other piece, the adapter board. The adapter board converts the signals from the
Lab board I/O connector to a format compatible with the SCXI-1160 rear signal connector pinout
at the front connector of the SCXI-1341 or SCXI-1344. The adapter board also has an additional
male breakout connector that provides the unmodified Lab board signals for use with an
SCXI-1180 feedthrough panel or SCXI-1181 breadboard module. The adapter board gives the
Lab boards full access to the digital control lines. The position of jumper W1 on the SCXI-1341
and SCXI-1344 is irrelevant because the SCXI-1160 does not use jumper W1. Table E-2 lists the
SCXI-1341 and SCXI-1344 pin translations.

© National Instruments Corporation E-3 SCXI-1160 User Manual

SCXI-1160 Cabling Appendix E

Table E-2. SCXI-1341 and 1344 Pin Translations

Lab Board Pin Lab Board Signal SCXI-1160 Pin SCXI-1160 Signal

1 ACH0 3 No Connect
2 ACH1 5 No Connect
3 ACH2 7 No Connect
4 ACH3 9 No Connect
5 ACH4 11 No Connect
6 ACH5 13 No Connect
7 ACH6 15 No Connect
8 ACH7 17 No Connect
9 AIGND 1-2 No Connect
10 DAC0OUT 20 No Connect
11 AOGND 23 No Connect
12 DAC1OUT 21 No Connect
13, 50 DGND 24 DIG GND
26 PB4 25 SERDATIN
27 PB5 27 DAQD*/A
28 PB6 29 SLOT0SEL*
29 PB7 37 SERCLK
31 PC1 26 SERDATOUT
32 PC2 28 No Connect
40 EXTCONV* 36 No Connect
43 OUTB1 46 No Connect
49 +5 V 34-35 No Connect

All other pins of the Lab board pinout are not sent to the SCXI-1160 rear signal connector.

SCXI-1341 and SCXI-1344 Installation

Follow these steps to install the SCXI-1341 or SCXI-1344:

1. Make sure that the computer and the SCXI chassis are turned off.

2. Install the SCXI module in the chassis.

3. Connect one end of the ribbon cable to the adapter board rear connector. This is the 50-pin

connector of the SCXI-1344 cable.

4. Plug the adapter board front connector to the module rear signal connector. A corner of the

adapter board will enter the upper board guide of the chassis.

5. Screw the rear panel to the threaded strips in the rear of the chassis.

6. For an SCXI-1341, connect the loose end of the ribbon cable to the Lab-NB, Lab-PC, or

Lab-PC+ I/O connector. For an SCXI-1344, connect the two 26-pin connectors to the

Lab-LC board according to the instructions given in the Installation section of Chapter 2,

Configuration and Installation, of the Lab-LC User Manual.
Check the installation.

SCXI-1160 User Manual E-4 © National Instruments Corporation

Appendix E SCXI-1160 Cabling

SCXI-1342 PC-LPM-16 Adapter Board

The SCXI-1342 PC-LPM-16 cable assembly connects a PC-LPM-16 board to an SCXI-1160
module. The SCXI-1342 cable assembly consists of two pieces–a 50-conductor ribbon cable that
connects the PC-LPM-16 board to the other piece, the adapter board. The adapter board converts
the signals from the PC-LPM-16 I/O connector to a format compatible with the SCXI-1160 rear
signal connector pinout. The adapter board also has an additional male breakout connector that
provides the unmodified PC-LPM-16 signals for use with an SCXI-1180 feedthrough panel or
SCXI-1181 breadboard module. The adapter board gives the PC-LPM-16 full access to the
digital control lines. The position of jumper W1 on the SCXI-1342 is irrelevant because the
SCXI-1160 does not use jumper W1. Table E-3 lists the SCXI-1342 pin translations.

Table E-3. SCXI-1342 Pin Translations

PC-LPM-16 Pin PC-LPM-16 Signal Rear Signal

SCXI-1160 Use

Connector Pin

1-2 AIGND 1- 2 No Connect
3 ACH0 3 No Connect
4 ACH8 4 No Connect
5 ACH1 5 No Connect
6 ACH9 6 No Connect
7 ACH2 7 No Connect
8 ACH10 8 No Connect
9 ACH3 9 No Connect
10 ACH11 10 No Connect
11 ACH4 11 No Connect
12 ACH12 12 No Connect
13 ACH5 13 No Connect
14 ACH13 14 No Connect
15 ACH6 15 No Connect
16 ACH14 16 No Connect
17 ACH7 17 No Connect
18 ACH15 18 No Connect
19, 50 DGND 24 DIG GND
28 DIN6 26 SERDATOUT
29 DIN7 28 No Connect
34 DOUT4 25 SERDATIN
35 DOUT5 27 DAQD*/A
36 DOUT6 29 SLOT0SEL*
37 DOUT7 37 SERCLK
46 OUT2 46 No Connect
49 +5 V 34-35 No Connect

All other pins of the PC-LPM-16 pinout are not sent to the SCXI-1160 rear signal connector.

© National Instruments Corporation E-5 SCXI-1160 User Manual

SCXI-1160 Cabling Appendix E

SCXI-1342 Installation

Follow these steps to install the SCXI-1342:

1. Make sure that the computer and the SCXI chassis are turned off.

2. Install the SCXI module to which the SCXI-1342 will connect.

3. Connect one end of the ribbon cable to the adapter board rear connector.

4. Plug the adapter board front connector onto the module rear signal connector. A corner of

the adapter board will enter the upper board guide of the chassis.

5. Screw the rear panel to the threaded strips in the rear of the chassis.

6. Connect the loose end of the ribbon cable to the PC-LPM-16 I/O connector.

DIO-96, AT-MIO-16D, and AT-MIO-64F-5 Board
Connection

To use your SCXI-1160 with a DIO-96, AT-MIO-16D, or AT-MIO-64F-5 board, you need an
NB5 cable. The NB5 cable is a ribbon cable with a 100-pin connector that mates with the data
acquisition board rear signal connector. The other end of the cable is divided into two 50-pin
connectors. Use positions 1 through 50 of the NB5 connector to control the SCXI-1160 and the
SCXIbus via serial communication. Positions 51 through 100 of the NB5 cable are not used by
the SCXI-1160 for serial communication. You may connect the 50-pin connector directly to the
SCXI-1160 or you may use an SCXI-1351.

The SCXI-1351 has the following advantages over the ribbon cable:

• The SCXI-1351 produces strain relief so that you cannot accidentally disconnect the cable.

• The SCXI-1351 includes a mounting bracket that mounts to the chassis so that you can

remove and reinsert the module without explicitly removing the cable from the back of the

chassis. This is especially useful when the SCXI chassis is rack mounted, making rear access

difficult.

• The SCXI-1351 has an extra female connector for use with the SCXI-1180 feedthrough panel

or additional modules or breadboards that need a direct connection to the DIO-96 board.

• The SCXI-1351 rear panel gives the module and the chassis both mechanical and electrical

shielding.
Table E-4 lists the pin equivalences of the DIO-96, AT-MIO-16D, and AT-MIO-64F-5 board

and the SCXI-1162.

SCXI-1160 User Manual E-6 © National Instruments Corporation

Appendix E SCXI-1160 Cabling

Table E-4. SCXI-1160, DIO-96, AT-MIO-16D, and AT-MIO-64F-5 Pinout Equivalences

Pin SCXI-1160 Rear Signal

Serial Connector

DIO-96

Board

AT-MIO-16D AT-MIO-64F-5

Equivalent

24 DIG GND (MIO) DIG GND DIG GND
25 SERDATIN APB3 ADIO0 ADIO0
26 SERDATOUT (MIO) BDIO0 BDIO0
27 DAQD*/A APB2 ADIO1 ADIO1
29 SLOT0SEL* APB1 ADIO2 ADIO2
31 SERCLK (DIO) APB0
37 SERCLK (MIO) EXTSTROBE* EXTSTROBE*
47 SERDATOUT (DIO) APA0
50 DIG GND (DIO) DIG GND

No other pins are connected on the SCXI-1160.

SCXI-1351 and NB5 Cable Installation

Follow these steps to install the SCXI-1351:

1. Make sure that the computer and the SCXI chassis are turned off.

2. Install the SCXI module in the chassis.

3. Connect the position 1 through 50 connector of the NB5 cable to the male breakout connector

on the SCXI-1351.

4. Plug the mounting bracket connector onto the module rear signal connector (see Figure E-2).

An alignment tab on the bracket will enter the upper board guide of the chassis.

5. Screw the mounting bracket to the threaded strips in the rear of the chassis.

6. Connect the 100-pin connector of the NB5 cable to the DIO-96 board.
After step 1, the order of these steps is not critical; however, it is easier to locate the correct

position for the mounting bracket with a module installed in the chassis. If you are attaching a
cable to the female connector, installation is easiest if you attach the second cable before
installing the SCXI-1351.

© National Instruments Corporation E-7 SCXI-1160 User Manual

SCXI-1160 Cabling Appendix E

SCXI-1160 Rear
Signal Connector

Mounting Bracket
Connector

Step 4

Male Breakout

Connector

Rear Panel

Step 5

50-Pin Female

Connector to

Next Slot

Step 3

NB5 Cable Positions

1 through 50

Mounting Bracket

Figure E-2. SCXI-1351 and NB5 Cable Installation

SCXI-1348 DIO-32F Adapter Board

The SCXI-1348 DIO-32F cable assembly connects a DIO-32F board to an SCXI-1160 module.
The SCXI-1348 cable assembly consists of two pieces–a 50-conductor shielded ribbon cable that
connects the DIO-32F board to the other piece, the adapter board. The adapter board converts
the signals from the DIO-32F I/O connector to a format compatible with the SCXI-1160 rear
signal connector pinout. The adapter board also has an additional male breakout connector that
provides the unmodified DIO-32F signals for use with an SCXI-1180 feedthrough panel or
SCXI-1181 breadboard module. The adapter board gives the DIO-32F full access to the digital
control lines. Table E-5 lists the SCXI-1348 pin translations.

SCXI-1160 User Manual E-8 © National Instruments Corporation

Appendix E SCXI-1160 Cabling

Table E-5. SCXI-1348 Pin Translations

DIO-32F Pin DIO-32F Signal Rear Signal

Connector Pin

SCXI-1160 Use

1 DIOD1 46 No Connect
2 DIOD4 40 No Connect
3 DIOD3 42 No Connect
4 DIOD0 48 No Connect
5 DIOD6 36 No Connect
6 DIOD7 34 No Connect
7 DIOD2 44 No Connect
8 DIOD5 38 No Connect
9 DIOC5 5 No Connect
10 DIOC7 1 No Connect
11 DIOC3 9 No Connect
12 DIOC1 13 No Connect
13 DIOC2 11 No Connect
14 DIOC0 15 No Connect
15 DIOC6 3 No Connect
16 DIOC4 7 No Connect
17, 19 DIG GND 2, 4 No Connect
21, 23 DIG GND 6, 8 No Connect
25, 26 DIG GND 10, 12 No Connect
28, 30 DIG GND 14, 16 No Connect
32, 34 DIG GND 50 DIG GND
18 ACK2 26 No Connect
20 IN2 28 No Connect
22 OUT2 30 No Connect
24 REQ2 32 No Connect
27 ACK1 18 No Connect
29 IN1 20 No Connect
31 OUT1 22 No Connect
33 REQ1 24 No Connect
35 DIOA4 39 No Connect
36 DIOA6 35 No Connect
37 DIOA0 47 SERDATOUT
38 DIOA2 43 No Connect
39 DIOA1 45 No Connect
40 DIOA3 41 No Connect
41 DIOA7 33 No Connect
42 DIOA5 37 No Connect
43 DIOB5 21 No Connect
44 DIOB2 27 DAQD*/A
45 DIOB7 17 No Connect
46 DIOB6 19 No Connect
47 DIOB0 31 SERCLK
48 DIOB3 25 SERDATIN
49 DIOB4 23 No Connect
50 DIOB1 29 SLOT0SEL*

© National Instruments Corporation E-9 SCXI-1160 User Manual

SCXI-1160 Cabling Appendix E

SCXI-1348 Installation

Follow these steps to install the SCXI-1348:

1. Make sure that the computer and the SCXI chassis are turned off.

2. Install the SCXI module to which the SCXI-1348 will connect.

3. Connect one end of the ribbon cable to the adapter board rear connector.

4. Plug the adapter board front connector onto the module rear signal connector. A corner of

the adapter board will enter the upper board guide of the chassis.

5. Screw the rear panel to the threaded strips in the rear of the chassis.

6. Connect the loose end of the ribbon cable to the DIO-32F I/O connector.
Check the installation.

SCXI-1180 Feedthrough Panel

The SCXI-1180 feedthrough panel provides front panel access to the signals of any data
acquisition board that uses a 50-pin I/O connector. The SCXI-1180 consists of a front panel with
a 50-pin male front panel connector that occupies one slot in the SCXI chassis, and a ribbon
cable with a female rear connector and a male breakout connector. You can attach the rear
connector to the male breakout connector of an SCXI-1340, SCXI-1341, SCXI-1342,
SCXI-1344, or SCXI-1351 in the adjacent slot. The breakout connector further extends the
cabling scheme. The front panel connector has the feedthrough connection. You can attach an
SCXI-1302 terminal block to the front panel connector for simple screw terminal connections. A
rear filler panel that shields and protects the interior of the SCXI chassis is also included.

SCXI-1180 Installation

Install the SCXI-1180 to the right of a slot that has an SCXI-1340, SCXI-1341, SCXI-1342, or
SCXI-1344 cable assembly or an SCXI-1351 slot extender in its rear connector space.

Follow these steps to install the SCXI-1180:

1. Make sure that the computer and the SCXI chassis are turned off.

2. Remove the front filler panel of the slot where you want to insert the SCXI-1180.

3. Thread the rear connector through the front of the chassis to the rear of the chassis. Attach

the rear connector to the breakout connector of the adjacent cable assembly or slot extender,

as shown in Figure E-3.

4. Screw in the rear panel to the threaded strip in the rear of the chassis.

5. Screw the front panel into the front threaded strip, as shown in Figure E-4.
Check the installation.

SCXI-1160 User Manual E-10 © National Instruments Corporation

Appendix E SCXI-1160 Cabling

Step 3

SCXI-1180

Breakout Connector

Ribbon Cable to

Front Panel

Rear Connector

Threaded Strip in

Rear of Chassis

Breakout Connector

from SCXI-1340

Step 4

Rear

Panel

Figure E-3. SCXI-1180 Rear Connections

: If you are using the SCXI-1180 with an SCXI-1351 and an NB5 cable, connect the

Note

SCXI-1180 breakout connector to the female connector on the SCXI-1351. Place the
SCXI-1180 to the left of the SCXI-1351 (looking to the front of the chassis).

© National Instruments Corporation E-11 SCXI-1160 User Manual

SCXI-1160 Cabling Appendix E

Front Panel
Connector

Ribbon Cable to
Rear and Breakout
Connectors

Step 5

Front Panel

Front Threaded Strip

Figure E-4. SCXI-1180 Front Panel Installation

SCXI-1302 50-Pin Terminal Block

The SCXI-1302 terminal block has screw terminal connections for the 50-pin connector on the
SCXI-1180 feedthrough panel.

SCXI-1302 Wiring Procedure

To wire the SCXI-1302 terminal block, you must remove the cover, connect all the wiring, and
replace the cover. The procedure for this is as follows:

1. Unscrew the rear grounding screw on the back of the terminal block, as shown in Figure E-5.

2. With a flathead screwdriver, carefully pry the cover off the terminal block.

3. Insert each wire through the terminal block strain relief.

4. Connect the wires to the screw terminals.

5. Tighten the large strain relief screws to secure the wires.

6. Snap the cover back in place.

7. Reinsert the rear grounding screw. The terminal block is now ready to be connected to the

front panel connector.

SCXI-1160 User Manual E-12 © National Instruments Corporation

Appendix E SCXI-1160 Cabling

Step 2

Insert Screwdriver in
Groove and Rotate to
Pry Open

Figure E-5. SCXI-1350 Cover Removal

Thumbscrew
Cutout

Grounding
Screw

50-Pin
Connector

Step 1

SCXI-1302 Installation

Follow these steps to install the SCXI-1302:

1. Install an SCXI-1180 feedthrough panel as described in the SCXI-1180 Installation section.

2. Wire the terminal block as previously described in the SCXI-1302 Wiring Procedure section.

3. Connect the SCXI-1302 terminal block to the front panel connector on the SCXI-1180

feedthrough panel. Be careful to fit the thumbscrews in the thumbscrew cutouts.

4. Tighten the top and bottom captive screws on the back of the terminal block into the screw

holes in the front panel to hold the SCXI-1302 securely in place.
Check the installation.

SCXI-1351 One-Slot Cable Extender

The SCXI-1351 cable extender is a miniature SCXI-1340 cable assembly. Instead of connecting
to an MIO board 1 m away, the SCXI-1351 female rear connector connects to a male breakout
connector that must be in the rear connector space of the slot to the left. The SCXI-1351 has a
female mounting bracket connector that mates with the rear signal connector of a module, and
also has a male breakout connector on the ribbon cable for connecting to a feedthrough panel or
more cable extenders.

© National Instruments Corporation E-13 SCXI-1160 User Manual

SCXI-1160 Cabling Appendix E

SCXI-1351 Installation

Follow these steps to install the SCXI-1351:

1. Make sure that the computer and the SCXI chassis are turned off.

2. Install the SCXI module in the chassis.

3. Connect the rear connector of the cable extender to the breakout connector in the adjacent

This attachment is similar to Step 3 in the SCXI-1180 Installation section, as shown in

slot.

Figure E-6.

4. Plug the mounting bracket connector to the module rear signal connector. An alignment tab

on the bracket will enter the upper board guide of the chassis.

5. Screw the mounting bracket to the threaded strips in the rear of the chassis.
Check the installation.

Multiple-Chassis Connections for the SCXI-1160

The SCXI-1160 can operate in a multiple-chassis system with the DIO-24, DIO-96, MIO-16, and
AT-MIO-64F-5 boards. A multiple-chassis system can consist of up to eight SCXI-1001 chassis
controlled by the same data acquisition board. Notice that you cannot use the SCXI-1000 in a
multiple-chassis system. For each chassis, you will need an SCXI-1350 multichassis adapter
board and an NB1 ribbon cable.

SCXI-1350 Multichassis Adapter

Note: When connecting multiple chassis, you should use a 0.5 m length ribbon cable between

chassis to minimize cable length and maintain signal integrity. However, you can use a

1.0 m cable from the data acquisition board to the first chassis. When you are using the
AT-MIO-16D or AT-MIO-64F-5 or DIO-96 board, use an NB5 ribbon cable from the
data acquisition board to the first chassis, connecting positions 1 through 50 to the
SCXI-1350 in the first chassis.

SCXI-1350 Installation

After you have installed the data acquisition board into the computer and the SCXI modules into
each of the SCXI-1001 chassis, cable one module from each chassis to the data acquisition board
as follows:

1. Make sure that the computer and all the SCXI chassis are turned off.

2. Connect one end of the NB1 (or the 100-pin connector of the NB5) cable to the data

acquisition board.

3. Plug the other end of the cable (or positions 1 through 50 of the NB5 cable) into the

connector with the latches that are at the rear of the SCXI-1350 adapter board.

SCXI-1160 User Manual E-14 © National Instruments Corporation

Appendix E SCXI-1160 Cabling

4. Connect another ribbon cable to the chassis extender connector that is in the middle of the

SCXI-1350.

5. Plug the SCXI-1350 into the back of an SCXI module in the first chassis so that the module

rear connector mates with the front connector on the SCXI-1350 adapter board. When you

are connecting to an SCXI-1160, be sure to set the jumpers for either a DIO-type or an

MIO-type board as needed.

6. Screw the rear panel to the threaded strips in the rear of the chassis.

7. Connect the loose end of the ribbon cable from step 4 into the rear connector of the second

SCXI-1350, and install the adapter board.

8. Continue until all chassis are connected. You do not need to connect anything to the middle

connector of the SCXI-1350 adapter board in the last chassis.

SCXI-1343 Rear Screw Terminal Adapter

You use the SCXI-1343 universal adapter to adapt custom wiring to the SCXI-1160. The
SCXI-1343 has screw terminals and solder pads for signal connection. A strain relief is on the
outside of the rear panel.

Table E-6 SCXI-1343 Pin Connections

Rear Signal

SCXI-1160 Use Connection

Connector Pin

1 No Connect Solder pad
2 No Connect Screw terminal
3 No Connect Screw terminal
4 No Connect Screw terminal
5 No Connect Screw terminal
6 No Connect Screw terminal
7 No Connect Screw terminal
8 No Connect Screw terminal
9 No Connect Screw terminal
10 No Connect Screw terminal
11 No Connect Screw terminal
12 No Connect Screw terminal
13 No Connect Screw terminal
14 No Connect Screw terminal
15 No Connect Screw terminal
16 No Connect Screw terminal
17 No Connect Screw terminal

© National Instruments Corporation E-15 SCXI-1160 User Manual

(continues)

SCXI-1160 Cabling Appendix E

Table E-6. SCXI-1343 Pin Connections (Continued)

Rear Signal

Connector Pin

18 No Connect Screw terminal
19 No Connect Screw terminal
20 No Connect Solder pad
21 No Connect Solder pad
22 No Connect Solder pad
23 No Connect Solder pad
24 DIG GND (MIO) Solder pad
26 SERDATOUT (MIO) Solder pad
27 DAQD*/A Solder pad
28 No Connect Solder pad
29 SLOT0SEL* Solder pad
30 No Connect Solder pad
31 SERCLK (DIO) Solder pad
32 No Connect Solder pad
33 No Connect Solder pad
34-35 No Connect Solder pad
36 No connect Solder pad
37 SERCLK (MIO) Solder pad
38 No Connect Solder pad
39 No Connect Solder pad
40 No Connect Solder pad
41 No Connect Solder pad
42 No Connect Solder pad
43 No Connect Solder pad
44 No Connect Solder pad
45 No Connect Solder pad
46 No Connect Solder pad
47 SERDATOUT (DIO) Solder pad
48 No Connect Solder pad
49 No Connect Solder pad
50 DIG GND (DIO) Solder pad

SCXI-1160 Use Connection

SCXI-1343 Installation

1. Insert each wire through the adapter strain relief.

2. Make all solder connections first.

3. Tighten the strain relief screws to secure the wires.

4. Plug the adapter board front connector into the module rear signal connector. A corner of the

adapter board will enter the upper board guide of the chassis.

5. Screw the rear panel to the threaded strips in the rear of the chassis.

SCXI-1160 User Manual E-16 © National Instruments Corporation

Appendix F
Aromat Relay Technical Data

*

This appendix contains technical data on Aromat Corporation relays. Aromat relays are used on
the SCXI-1160.

* Copyright © Aromat Corporation, 1991. Reprinted with permission of copyright owner. All rights reserved.

Aromat Corporation. 1991 Relay Technical Data Book.

© National Instruments Corporation F-1 SCXI-1160 User Manual

Appendix G
Customer Communication

___________________________________________________

National Instruments offers technical support through electronic, fax, and telephone systems. The
electronic services include our Web site, an FTP site, and a fax-on-demand system. If you have a
hardware or software problem, please first try the electronic support systems. If the information
available on these systems does not answer your questions, contact one of our technical support
centers, which are staffed by applications engineers, for support by telephone and fax. To
comment on the documentation supplied with our products, send e-mail to
[e-mail].

Web Site

The InstrumentationWeb address is www.natinst.com.
From this Web site you can connect to our Web sites around the world
(www.natinst.com/niglobal/) and access technical support (www.natinst.com/support/).

FTP Site

To access our FTP site, log in to our Internet host, ftp.natinst.com, as anonymous and use your e­mail address, such as [e-mail], as your password. The support files and
documents are located in the \support directories.

Fax-on-Demand Support

Fax-on-Demand is a 24-hour information retrieval system containing a library of documents in
English on a wide range of technical information. You can access Fax-on-Demand from a touch­tone telephone at 512 418 1111.

E-Mail Support

You can submit technical support questions to the applications engineering team through e-mail
at [e-mail]. Remember to include your name, address, and phone number so we can
contact you with solutions and suggestions.

© National Instruments Corporation G-1 SCXI-1160 User Manual

Telephone and Fax Support

National Instruments has branch offices all over the world. Use the following list to find the
technical support number for your country. If there is no National Instruments office in your
country, contact the source from which you purchased your software to obtain support.

Branch Offices Phone Number Fax Number

Australia 03 9879 5166 03 9879 6277
Austria 0662 45 79 90 0 0662 45 79 90 19
Belgium 02 757 00 20 02 757 03 11
Brazil 011 284 5011 011 288 8528
Canada (Ontario) 905 785 0085 905 785 0086
Canada (QuÈbec) 514 694 8521 514 694 4399
Denmark 45 76 26 00 45 76 26 02
Finland 09 725 725 11 09 725 725 55
France 0 1 48 14 24 24 0 1 48 14 24 14
Germany 089 741 31 30 089 714 60 35
Hong Kong 2645 3186 2686 8505
India 91805275406 91805275410
Israel 03 6120092 03 6120095
Italy 02 413091 02 4139215
Japan 03 5472 2970 03 5472 2977
Korea 02 596 7456 02 596 7455
Mexico (D.F.) 5 280 7625 5 520 3282
Mexico (Monterrey) 8 357 7695 8 365 8543
Netherlands 0348 433466 0348 430673
Norway 32 84 84 00 32 84 86 00
Singapore 2265886 2265887
Spain (Madrid) 91 640 0085 91 640 0533
Spain (Barcelona) 93 582 0251 93 582 4370
Sweden 08 587 895 00 08 730 43 70
Switzerland 056 200 51 51 056 200 51 55
Taiwan 02 2377 1200 02 2737 4644
United Kingdom 01635 523545 01635 523154
United States 512 795 8248 512 794 5678

Technical Support Form

___________________________________________________

Photocopy this form and update it each time you make changes to your software or hardware, and use the completed
copy of this form as a reference for your current configuration. Completing this form accurately before contacting
National Instruments for technical support helps our applications engineers answer your questions more efficiently.

If you are using any National Instruments hardware or software products related to this problem, include the
configuration forms from their user manuals. Include additional pages if necessary.

Name
Company
Address

Fax ( ) Phone ( )
Computer brand Model Processor

Operating system

Speed MHz RAM MB Display adapter

Mouse yes no Other adapters installed

Hard disk capacity MB Brand

Instruments used
National Instruments hardware product model Revision

Configuration
National Instruments software product Version

Configuration
The problem is

List any error messages

The following steps will reproduce the problem

SCXI-1160 Hardware Configuration Form

Record the settings and revisions of your hardware and software on the line to the right of each item. Complete a
new copy of this form each time you revise your software or hardware configuration, and use this form as a
reference for your current configuration. Completing this form accurately before contacting National Instruments
for technical support helps our applications engineers answer your questions more efficiently.

• SCXI-1160 Revision

• Chassis Slot

• Chassis Type

• Jumper W1

• Jumper W2

• Jumper W3

• Jumper W4

• Jumper W5

My Setting

1

•

•

2

•

3

DIO

•

•

DIO

•

•

DIO

•

•

1

•
2

•

•

3

MIO

•

MIO

•

MIO

•

Factory Setting

1

•

•

2

•

3

DIO

•

•

•

DIO

•

•

•

DIO

•

•

•

•

1

•

2

•

3

MIO

MIO

MIO

Note: Mark your jumper positions on the jumper diagrams in the left column.

• Other Modules and Chassis in System

• Data Acquisition Boards Installed

Documentation Comment Form

National Instruments encourages you to comment on the documentation supplied with our products. This
information helps us provide quality products to meet your needs.

Title: SCXI-1160 User Manual
Edition Date: March 1999
Part Number: 320513B-01
Please comment on the completeness, clarity, and organization of the manual.

If you find errors in the manual, please record the page numbers and describe the errors.

Thank you for your help.
Name

Title
Company
Address

Phone ( )

Mail to: Technical Publications Fax to: Technical Publications

National Instruments Corporation National Instruments Corporation
6504 Bridge Point Parkway, MS 53-02 MS 53-02
Austin, TX 78730-5039 [phone]

Glossary

___________________________________________________

Prefix Meaning Value

12

p- pico­n- nano­µ- micro-

m- milli-

k- kilo-

M- mega-

˚ degrees
% percent
Ω ohms

e strain

A amperes
ACH# data acquisition board analog input channel number
A/D analog-to-digital
Arms amperes, root mean square
AWG American Wire Gauge
C Celsius
CH#+ module positive input channel number
CH#- module negative input channel number
cpm counts per minute
cps counts per second
COM common
D/A digital-to-analog
dB decibels
DIN Deutsche Industrie Norme
emf electromotive force
FIFO first-in-first-out
in. inches
hex hexadecimal
HSCR Hardscan Control Register
H z hertz
ID identification
I

I

I

in

I/O input/output
I

out

LSB least significant bit
m meters

input current leakage
input current

output current

10

10
10
10

10
10

-

9

-

6

-

3

-

3
6

© National Instruments Corporation Glossary-1 SCXI -1160 User Manual

Glossary

M megabytes of memory
MCH#+ module positive output channel number
MCH#- module negative output channel number
MSB most significant bit
MTS multiplexed temperature sensor
NC normally closed
NO normally open
RAM random-access memory
rms root mean square
RTSI Real-Time System Integration
SCXI Signal Conditioning eXtensions for Instrumentation (bus)
SDK Software Developer's Kit
sec seconds
SPDT single-pole double throw
SPI serial peripheral interface
UL Underwriters' Laboratory
V volts
VI virtual instrument
V
V
V
V
V
V

IH
IL

in

OH
OL

out

volts input high
volts input low
volts in
volts output high
volts output low

volts out
VAC volts alternating current
VDC volts direct current
Vrms volts, root mean square
W watts

SCXI-1160 User Manual Glossary-2 © National Instruments Corporation