National Instruments DAQ AT-MIO-16X Bedienungsanleitung

AT-MIO-16X

User Manual

Multifunction I/O Board for the PC AT/EISA

October 1997 Edition

Part Number 320640B-01

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Important Information

Warranty

The AT-MIO-16X 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 manual is accurate. The document has been carefully

reviewed for technical accuracy. In the event that technical or typographical errors exist, National Instruments reserves

the right to make changes to subsequent editions of this document without prior notice to holders of this edition. The

reader should consult National Instruments if errors are suspected. In no event shall National Instruments be liable for

any damages arising out of or related to this document or the information contained in it.

EXCEPT AS SPECIFIED HEREIN, NATIONAL INSTRUMENTS MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AND

SPECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR APARTICULAR PURPOSE.

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Instruments will apply regardless of the form of action, whether in contract or tort, including negligence. Any action

against National Instruments must be brought within one year after the cause of action accrues. National Instruments

shall not be liable for any delay in performance due to causes beyond its reasonable control. The warranty provided

herein does not cover damages, defects, malfunctions, or service failures caused by owner’s failure to follow the

National Instruments installation, operation, or maintenance instructions; owner’s modification of the product;

owner’s abuse, misuse, or negligent acts; and power failure or surges, fire, flood, accident, actions of third parties,

or other events outside reasonable control.

Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical,

including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part,

without the prior written consent of National Instruments Corporation.

Trademarks

ComponentWorks™, LabVIEW™, Measure™, NI-DAQ™, RTSI™, and VirtualBench™ are trademarks of National

Instruments Corporation.

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

WARNING REGARDING MEDICAL AND CLINICAL USE OF NATIONAL INSTRUMENTS PRODUCTS

National Instruments products are not designed with components and testing intended to ensure a level of reliability

suitable for use in treatment and diagnosis of humans. Applications of National Instruments products involving

medical or clinical treatment can create a potential for accidental injury caused by product failure, or by errors on the

part of the user or application designer. Any use or application of National Instruments products for or involving

medical or clinical treatment must be performed by properly trained and qualified medical personnel, and all traditional

medical safeguards, equipment, and procedures that are appropriate in the particular situation to prevent serious injury

or death should always continue to be used when National Instruments products are being used. National Instruments

products are NOT intended to be a substitute for any form of established process, procedure, or equipment used to

monitor or safeguard human health and safety in medical or clinical treatment.

National Instruments Corporation v AT-MIO-16X User Manual

Table

Contents

About This Manual

Organization of This Manual........................................................................................xv

Conventions Used in This Manual................................................................................xvi

Related Documentation.................................................................................................xvii

Customer Communication............................................................................................xvii

Chapter 1

Introduction

About the AT-MIO-16X...............................................................................................1-1

Analog Input...................................................................................................1-2

Analog Output................................................................................................1-2

Digital and Timing I/O...................................................................................1-3

What You Need to Get Started .....................................................................................1-3

Software Programming Choices...................................................................................1-4

National Instruments Application Software...................................................1-4

NI-DAQ Driver Software...............................................................................1-5

Optional Equipment......................................................................................................1-7

Unpacking.....................................................................................................................1-7

Chapter 2

Configuration and Installation

Board Configuration .....................................................................................................2-2

AT Bus Interface ............................................................................................2-2

Base I/O Address Selection............................................................................2-3

Interrupt and DMA Channel Selection...........................................................2-7

Analog Input Configuration..........................................................................................2-7

Input Mode .....................................................................................................2-7

DIFF Input (Eight Channels) ...........................................................2-8

RSE Input (16 Channels) .................................................................2-9

NRSE Input (16 Channels) ..............................................................2-9

Input Polarity and Input Range.......................................................................2-10

Considerations for Selecting Input Ranges......................................2-10

Analog Output Configuration.......................................................................................2-11

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AT-MIO-16X User Manual vi

National Instruments Corporation

Analog Output Reference Selection............................................................... 2-11

Analog Output Polarity Selection.................................................................. 2-12

Digital I/O Configuration ............................................................................................. 2-12

Board and RTSI Clock Configuration.......................................................................... 2-12

Hardware Installation ................................................................................................... 2-13

Signal Connections....................................................................................................... 2-14

Signal Connection Descriptions..................................................................... 2-17

Analog Input Signal Connections .................................................................. 2-19

Types of Signal Sources................................................................................. 2-21

Floating Signal Sources................................................................... 2-21

Ground-Referenced Signal Sources................................................. 2-21

Input Configurations...................................................................................... 2-21

Differential Connection Considerations (DIFF Input

Configuration)............................................................................... 2-22

Differential Connections for Ground-Referenced Signal

Sources.......................................................................................... 2-23

Differential Connections for Nonreferenced or Floating

Signal Sources .............................................................................. 2-24

Single-Ended Connection Considerations....................................... 2-26

Single-Ended Connections for Floating Signal Sources

(RSE Configuration)..................................................................... 2-27

Single-Ended Connections for Grounded Signal Sources

(NRSE Configuration).................................................................. 2-28

Common-Mode Signal Rejection Considerations........................... 2-29

Analog Output Signal Connections................................................................ 2-29

Digital I/O Signal Connections...................................................................... 2-31

Power Connections ........................................................................................ 2-32

Timing Connections for Data Acquisition and Analog Output ..................... 2-33

SCANCLK Signal ........................................................................... 2-33

EXTSTROBE* Signal..................................................................... 2-33

EXTCONV* Signal......................................................................... 2-34

EXTTRIG* Signal........................................................................... 2-35

EXTGATE* Signal.......................................................................... 2-36

EXTTMRTRIG* Signal .................................................................. 2-36

Counter Signal Connections............................................................ 2-37

Field Wiring Considerations......................................................................................... 2-42

Cabling Considerations for the AT-MIO-16X with 50-Pin I/O Connector ................. 2-43

Cabling Considerations for the AT-MIO-16X with 68-Pin I/O Connector ................. 2-44

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National Instruments Corporation vii AT-MIO-16X User Manual

Chapter 3

Theory of Operation

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

PC I/O Channel Interface Circuitry ..............................................................................3-2

Analog Input and Data Acquisition Circuitry...............................................................3-5

Analog Input Circuitry ...................................................................................3-6

A/D Converter..................................................................................3-6

Analog Input Multiplexers...............................................................3-6

Analog Input Configuration.............................................................3-6

PGIA ................................................................................................3-7

ADC FIFO Buffer............................................................................3-7

Analog Input Calibration .................................................................3-7

Data Acquisition Timing Circuitry.................................................................3-8

Single-Read Timing.........................................................................3-8

Single-Channel Data Acquisition Timing........................................3-9

Multiple-Channel Data Acquisition ...............................................................3-12

Continuous Scanning Data Acquisition Timing ..............................3-13

Interval Scanning Data Acquisition Timing ....................................3-14

Data Acquisition Rates.....................................................................3-15

Analog Output and Timing Circuitry.............................................................3-15

Analog Output Circuitry ..................................................................3-16

Analog Output Configuration ..........................................................3-17

Analog Output Calibration...............................................................3-17

DAC Waveform Circuitry and Timing...........................................................3-18

DAC Waveform Circuitry................................................................3-18

DAC Waveform Timing Circuitry...................................................3-20

FIFO Continuous Cyclic Waveform Generation.............................3-22

FIFO Programmed Cyclic Waveform Generation...........................3-23

FIFO Pulsed Waveform Generation ................................................3-23

Digital I/O Circuitry......................................................................................................3-24

Timing I/O Circuitry.....................................................................................................3-25

RTSI Bus Interface Circuitry........................................................................................3-29

Chapter 4

Register Map.................................................................................................................4-1

Configuration and Status Register Group.......................................................4-4

Command Register 1........................................................................4-5

Command Register 2........................................................................4-9

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AT-MIO-16X User Manual viii

National Instruments Corporation

Command Register 3 ....................................................................... 4-13

Command Register 4 ....................................................................... 4-20

Status Register 1.............................................................................. 4-25

Status Register 2.............................................................................. 4-30

Analog Input Register Group......................................................................... 4-31

ADC FIFO Register......................................................................... 4-32

CONFIGMEM Register .................................................................. 4-35

Analog Output Register Group...................................................................... 4-41

DAC0 Register ................................................................................ 4-44

DAC1 Register ................................................................................ 4-45

ADC Event Strobe Register Group................................................................ 4-46

CONFIGMEMCLR Register........................................................... 4-47

CONFIGMEMLD Register............................................................. 4-48

DAQ Clear Register......................................................................... 4-49

DAQ Start Register.......................................................................... 4-50

Single Conversion Register ............................................................. 4-51

ADC Calibration Register ............................................................... 4-52

DAC Event Strobe Register Group................................................................ 4-53

TMRREQ Clear Register................................................................. 4-54

DAC Update Register...................................................................... 4-55

DAC Clear Register......................................................................... 4-56

General Event Strobe Register Group............................................................ 4-57

DMA Channel Clear Register.......................................................... 4-58

DMATCA Clear Register................................................................ 4-59

DMATCB Clear Register................................................................ 4-60

External Strobe Register.................................................................. 4-61

Calibration DAC 0 Load Register ................................................... 4-62

Calibration DAC 1 Load Register ................................................... 4-63

Am9513A Counter/Timer Register Group .................................................... 4-64

Am9513A Data Register ................................................................. 4-65

Am9513A Command Register ........................................................ 4-66

Am9513A Status Register ............................................................... 4-67

Digital I/O Register Group............................................................................. 4-68

Digital Input Register ...................................................................... 4-69

Digital Output Register.................................................................... 4-70

RTSI Switch Register Group ......................................................................... 4-71

RTSI Switch Shift Register ............................................................. 4-72

RTSI Switch Strobe Register........................................................... 4-73

Table of Contents

National Instruments Corporation ix AT-MIO-16X User Manual

Chapter 5

Programming

Resource Allocation Considerations ..............................................................5-1

Initializing the AT-MIO-16X.........................................................................5-2

Initializing the Am9513A ................................................................5-3

Programming the Analog Input Circuitry.......................................................5-5

Single Conversions Using the SCONVERT or

EXTCONV* Signal ......................................................................5-5

Generating a Single Conversion.....................................................................5-6

Reading a Single Conversion Result..............................................................5-7

Programming Single-Channel Data Acquisition Sequence............................5-7

Programming Data Acquisition Sequences with Channel Scanning..............5-10

Continuous Channel Scanning Data Acquisition.............................5-10

Interval-Channel Scanning Data Acquisition.................................................5-12

Data Acquisition Programming Functions ...................................................................5-14

Clearing the Analog Input Circuitry...............................................................5-14

Programming Single-Analog Input Channel Configurations.........................5-15

Programming Multiple-Analog Input Channel Configurations .....................5-15

Programming the Sample-Interval Counter....................................................5-16

Programming the Sample Counter(s).............................................................5-17

Sample Counts 2 through 65,536.....................................................5-18

Sample Counts Greater than 65,536 ................................................5-18

Programming the Scan-Interval Counter........................................................5-20

Applying a Trigger.........................................................................................5-21

Servicing the Data Acquisition Operation......................................................5-22

Resetting the Hardware after a Data Acquisition Operation..........................5-22

Resetting a Single Am9513A Counter/Timer..................................5-23

Programming the Analog Output Circuitry....................................................5-25

Cyclic Waveform Generation.........................................................................5-26

Programmed Cycle Waveform Generation....................................................5-28

Pulsed Cyclic Waveform Generation.............................................................5-30

Waveform Generation Programming Functions ............................................5-32

Clearing the Analog Output Circuitry..............................................5-32

Selecting the Internal Update Counter.............................................5-32

Programming the Update-Interval Counter....................................................5-32

Programming the Waveform Cycle Counter..................................................5-34

Programming the Waveform Cycle Interval Counter ....................................5-34

Servicing Update Requests ..............................................................5-35

Programming the Digital I/O Circuitry.........................................................................5-36

Programming the Am9513A Counter/Timer................................................................5-37

RTSI Bus Trigger Line Programming Considerations .................................................5-37

Table of Contents

AT-MIO-16X User Manual x

National Instruments Corporation

RTSI Switch Signal Connection Considerations.......................................................... 5-38

Programming the RTSI Switch .................................................................................... 5-39

Programming DMA Operations..................................................................... 5-41

Interrupt Programming................................................................................... 5-43

Chapter 6

Calibration Procedures

Calibration Equipment Requirements .......................................................................... 6-7

Calibration DACs......................................................................................................... 6-8

Reference Calibration................................................................................................... 6-8

Analog Input Calibration.............................................................................................. 6-9

Analog Output Calibration........................................................................................... 6-10

Appendix A

Specifications

Appendix B

I/O Connector

Appendix C

AMD Am9513A Data Sheet

Appendix D

Customer Communication

Glossary

Index

Figures

Figure 1-1. The Relationship between the Programming Environment,

NI-DAQ, and Your Hardware............................................................... 1-6

Figure 2-1. AT-MIO-16X with 50-Pin I/O Connector Parts Locator Diagram....... 2-1

Figure 2-2. AT-MIO-16X with 68-Pin I/O Connector Parts Locator Diagram....... 2-2

Figure 2-3. Example Base I/O Address Switch Settings.......................................... 2-3

Figure 2-4. AT-MIO-16X 50-Pin I/O Connector..................................................... 2-15

Table of Contents

National Instruments Corporation xi AT-MIO-16X User Manual

Figure 2-5. AT-MIO-16X 68-Pin I/O Connector.....................................................2-16

Figure 2-6. AT-MIO-16X PGIA ..............................................................................2-20

Figure 2-7. Differential Input Connections for Ground-Referenced Signals...........2-23

Figure 2-8. Differential Input Connections for Nonreferenced Signals...................2-24

Figure 2-9. Single-Ended Input Connections for Nonreferenced or

Floating Signals .....................................................................................2-27

Figure 2-10. Single-Ended Input Connections for Ground-Referenced Signals........2-28

Figure 2-11. Analog Output Connections...................................................................2-30

Figure 2-12. Digital I/O Connections.........................................................................2-32

Figure 2-13. EXTSTROBE* Signal Timing..............................................................2-33

Figure 2-14. EXTCONV* Signal Timing ..................................................................2-34

Figure 2-15. EXTTRIG* Signal Timing....................................................................2-35

Figure 2-16. EXTTMRTRIG* Signal Timing............................................................2-36

Figure 2-17. Event-Counting Application with External Switch Gating ...................2-38

Figure 2-18. Frequency Measurement Application....................................................2-39

Figure 2-19. General-Purpose Timing Signals...........................................................2-41

Figure 3-1. AT-MIO-16X Block Diagram ...............................................................3-1

Figure 3-2. PC I/O Channel Interface Circuitry Block Diagram..............................3-3

Figure 3-3. Analog Input and Data Acquisition Circuitry Block Diagram..............3-5

Figure 3-4. ADC Conversion Timing.......................................................................3-8

Figure 3-5. Single-Channel Posttrigger Data Acquisition Timing...........................3-10

Figure 3-6. Single-Channel Pretrigger Data Acquisition Timing.............................3-11

Figure 3-7. Scanning Posttrigger Data Acquisition Timing.....................................3-13

Figure 3-8. Interval Scanning Posttrigger Data Acquisition Timing........................3-14

Figure 3-9. Analog Output Circuitry Block Diagram...............................................3-16

Figure 3-10. Analog Output Waveform Circuitry......................................................3-19

Figure 3-11. Posted DAC Update Timing..................................................................3-20

Figure 3-12. Analog Output Waveform Circuitry......................................................3-21

Figure 3-13. FIFO Cyclic Waveform Generation with Disable.................................3-22

Figure 3-14. FIFO Programmed Cyclic Waveform Timing.......................................3-23

Figure 3-15. FIFO Pulsed Waveform Generation Timing .........................................3-23

Figure 3-16. Digital I/O Circuitry Block Diagram.....................................................3-24

Figure 3-17. Timing I/O Circuitry Block Diagram ....................................................3-26

Figure 3-18. Counter Block Diagram.........................................................................3-27

Figure 3-19. RTSI Bus Interface Circuitry Block Diagram .......................................3-29

Figure 5-1. Initializing the Am9513A Counter/Timer.............................................5-4

Figure 5-2. Single Conversion Programming...........................................................5-6

Figure 5-3. Single-Channel Data Acquisition Programming ...................................5-9

Figure 5-4. Scanning Data Acquisition Programming.............................................5-11

Figure 5-5. Interval Scanning Data Acquisition Programming................................5-13

Figure 5-6. Resetting an Am9513A Counter/Timer.................................................5-24

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