National Instruments Measure Data Acquisition Manual de usuario

Measure®

Data Acquisition

User Manual

August 1996 Edition

Part Number 321004B-01

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Important Information

Warranty

The media on which you receive National Instruments software are warranted not to fail to execute programming

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

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

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Measure®and NI-DAQTM 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.

About This Manual

Organization of This Manual

Conventions Used in This Manual

Customer Communication xi

Chapter 1

Introduction

Using Measure with Your DAQ Device

DAQ Device Overview

Installing Measure

Manually Adding or Removing the DAQ Add-In

Uninstalling Measure

Chapter 2

Getting Started with Data Acquisition Tasks

Selecting a Data Acquisition Task

Configuring an Analog Input Task

Configuring an Analog Output Task

Adding Tasks to the DAQ Menu

Saving Tasks

Managing Tasks in a Workbook

Chapter 3

Using SCXI with Measure DAQ

SCXI Operating Modes

SCXI Analog Input

Multiple SCXI Modules and Chassis

SCXI Analog Output

Table of Contents

Measure Data Acquisition User Manual vi © National Instruments Corporation

Chapter 4

Analog Input Reference

DAQ Device Overview

Analog Input Configuration Overview

Analog Input Scan List

Channels

High Limit

Low Limit

Scan Information

Number of scans

Scale to volts

Timing Settings

Scans/second

External scan clock

Display At cell

In Columns

In Rows

Trigger Reference

Mode Reference

Advanced Timing Settings

Chapter 5

Analog Output Reference

Analog Output Configuration Overview

Advanced Configuration

Chapter 6

Using Measure Data Acquisition Tasks with VBA

Function Reference

DAQ

GetDAQErrorMessage

Appendix A

DAQ Hardware Capabilities

SCXI Information

MIO and AI Device Hardware Capabilities

Lab and 1200 Series and Portable Devices Hardware Capabilities

SCXI Module Hardware Capabilities

Analog Output Only Devices Hardware Capabilities

Table of Contents

Appendix B

Error Codes

Appendix C

Trouble Shooting

Appendix D

Customer Communication

Glossary

Index

Figures

Figure 1-1. Add-Ins Dialog Box

Figure 2-1. DAQ Tasks Dialog Box

Figure 2-2. Analog Input Configuration

Figure 2-3. Task Description Dialog Box

Figure 2-4. DAQ Tasks Dialog Box

Figure 2-5. Analog Output Configuration Dialog Box

Figure 2-6. DAQ Tasks Dialog Box

Figure 2-7. Adding Tasks to the DAQ Menu

Figure 2-8. The DAQ Menu

Figure 2-9. DAQ Tasks Dialog Box

Figure 3-1. Selecting the Add>> button

Figure 4-1. Analog Input Configuration Dialog Box

Figure 4-2. Scan Clock and Channel Clock

Figure 4-3. Round Robin Scanning

Figure 4-4. Hardware Digital Trigger Dialog Box

Figure 4-5. Analog Input Mode Dialog Box

Figure 4-6. Advanced Timing Settings Option

Figure 5-1. Analog Output Configuration

Figure 5-2. Advanced Analog Output Configuration Dialog Box

Table of Contents

Measure Data Acquisition User Manual viii © National Instruments Corporation

Tables

Table 2-1. DAQ Tasks Dialog Box Options

Table 3-1. SCXI Channel Strings Syntax

Table 4-1. Examples of Valid Channel Strings

Table 4-2. Analog Input Configuration Buttons/Options

Table 4-3. Choices for Hardware Digital Trigger

Table 4-4. Choices for Analog Input Mode Dialog Box

Table 4-5. Choices for Advanced Timing

Table 5-1. Analog Output Configuration Reference

Table 5-2. Advanced Analog Output Configuration Options

Table A-1. Analog Input Configuration Programmability—MIO and AI Devices

Table A-2. Analog Input Characteristics—MIO and AI Devices (Part 1)

Table A-3. Analog Input Characteristics—MIO and AI Devices (Part 2)

Table A-4. Analog Output Characteristics—MIO and AI Devices

Table A-5. Analog Input Configuration Programmability—Lab,

1200 Series, Portable Devices

Table A-6. Analog Input Characteristics—Lab, 1200 Series, Portable Devices (Part 1)

Table A-7. Analog Input Characteristics—Lab, 1200 Series, Portable Devices (Part 2)

Table A-8. Analog Output Characteristics—Lab, 1200 Series, Portable Devices

Table A-9. Analog Input Characteristics—SCXI Modules

Table A-10. Terminal Block Selection Guide—SCXI Modules

Table A-11. Analog Output Characteristics—Analog Output Only Devices

Table B-1. Data Acquisition Error Codes

The Measure Data Acquisition User Manual describes how to use the

Measure Data Acquisition Add-In with National Instruments data

acquisition boards to acquire data into Microsoft Excel. You should be

familiar with the operation of Microsoft Excel, your computer, your

computer’s operating system, and your data acquisition (DAQ) board.

Organization of This Manual

The Measure Data Acquisition User Manual is organized as follows.

• Chapter 1, Introduction, helps you install the Measure Data

Acquisition (DAQ) Add-In. You should have installed and

configured your DAQ hardware already.

• Chapter 2, Getting Started with Data Acquisition Tasks, contains a

tutorial for the following basic functions: Selecting a data

acquisition task, configuring an analog input task, configuring an

analog output task, adding tasks to the DAQ menu, saving tasks,

and managing tasks in a workbook.

• Chapter 3, Using SCXI with Measure DAQ, describes how to use

the Measure Data Acquisition Add-In in Excel with your Signal

Conditioning Extension for Instrumentation (SCXI) equipment.

• Chapter 4, Analog Input Reference, introduces some basic

concepts of data acquisition and contains a reference for analog

input configuration, hardware digital triggering, analog input

modes, and advanced timing. You should be familiar with the

hardware characteristics of your data acquisition device.

• Chapter 5, Analog Output Reference, introduces some concepts of

data acquisition and contains a reference for basic and advanced

Analog Output Configuration.

About This Manual

Measure Data Acquisition User Manual x © National Instruments Corporation

• Chapter 6, Using Measure Data Acquisition Tasks with VBA,

describes how to run tasks from within Visual Basic for

Applications.

• Appendix A, DAQ Hardware Capabilities, contains SCXI

information and tables that summarize the analog I/O capabilities

of National Instruments data acquisition devices you might use

with Measure for Windows.

• Appendix B, Error Codes, describes the errors that can occur

while using the Measure DAQ Add-In.

• Appendix C, Troubleshooting, describes solutions to problems that

you might encounter using the Measure DAQ Add-In.

• Appendix D, Customer Communication, contains forms you can

use to request help from National Instruments or to comment on

our products and manuals.

• The Glossary contains an alphabetical list and descriptions 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.

bold Bold text denotes a parameter, or the introduction of menus, menu

items, or dialog box buttons or options.

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

key concept.

bold italic Bold italic text denotes a note, caution, or warning.

About This Manual

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

from the keyboard, sections of code, programming examples, and

syntax examples. This font is also used for the proper names of disk

drives, paths, directories, programs, subprograms, subroutines, device

names, functions, variables, filenames, and extensions, and for

statements and comments taken from program code.

» The » symbol leads you through nested menu items, and dialog box

options to a final action. The sequence

Files»Page Setup»Options»Substitute Fonts

directs you to pull down the File menu, select the Page Setup item,

select Options, and finally select the Substitute Fonts option from the

last dialog box.

Note: This icon to the left of bold italicized text denotes a note, which alerts

you to important information.

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 D, Customer Communication, at the end of this manual.

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