Data Acquisition Toolbox
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Before You Begin

What Is the Data Acquisition Toolbox?

Intended Audience

Related Products

Requirements

What Is MATLAB?

Documentation Conventions

Installation

Toolbox Installation

Hardware and Driver Installation

Getting Started with the Data Acquisition Toolbox

Collecting Live Data

The Display Summary

Understanding the Toolbox Capabilities

The Readme and Contents M-files

Demos

Documentation Examples

Quick Reference Guide

Evaluating Your Hardware Resources

Getting Online Help

The daqhelp function

The propinfo function

Data Acquisition Toolbox Concepts

Overview

Toolbox Components

M-file Functions

The Data Acquisition Engine

The Hardware Driver Adaptor

Device Objects, Channels, and Lines

Device Objects

Channels and Lines

Toolbox Functions

Property Names and Property Values

Displaying Common Properties

Displaying Channel/Line Properties

Base Properties with Device-Specific Values

Specifying Property Names

Default Property Values

Events and Actions

Errors

Triggers

State Transitions

The Data Block

The Data Acquisition Session

Initialization

Configuration

Execution

Termination

Getting Started With Analog Input

Overview

Connecting to Your Hardware

Registering the Hardware Driver Adaptor

Creating an Analog Input Object

Adding Channels to an Analog Input Object

Controlling Acquisition Behavior with Properties

Basic Setup Properties

Data Range and Engineering Units Properties

Acquiring Data

Starting the Acquisition

Previewing Stored Data

Extracting Stored Data

Stopping the Acquisition

Deleting the Device Object

Analog Input Examples

Acquiring Data with a Sound Card

Acquiring Data with a National Instruments Board

Evaluating Your Acquisition Status

Acquisition Status Properties

Display Summary

Evaluating Your Hardware Resources

Getting Function and Property Help

Doing More With Analog Input

Overview

Setting Property Values

Referencing Analog Input Objects and Channels

Copying Device Objects and Channels

Reference by Channel Name

Reordering Channels

Configuring Hardware Properties

Setting and Verifying Hardware Properties

Configuring Hardware Input Channels

Sampling Channels

Additional Hardware Properties

Managing Acquired Data

Previewing Data

Extracting Data from the Engine

Calculating Time

Configuring Triggers

Trigger Types and Trigger Conditions

Trigger Delays

Repeating Triggers

Configuring Triggers for National Instruments Hardware

Configuring Events and Actions

Recording and Retrieving Event Information

Action Properties and Functions

Examples: Using Action Properties and Functions

Engineering Unit Conversion

Logging Information to Disk

Retrieving Logged Information

Example: Logging and Retrieving Information

Analog Output

Overview

Connecting to Your Hardware

Creating an Analog Output Object

Adding Channels to an Analog Output Object

Controlling Output Behavior with Properties

Basic Setup

Accessing Individual Channels

Data Range and Engineering Units

Outputting Data

Starting the Output

Queueing Data for Output

Stopping the Output

Deleting the Device Object

Analog Output Examples

Outputting Data with a Sound Card

Outputting Data with a National Instruments Board

Evaluating Your Acquisition Status and Resources

Acquisition Status Properties

Display Summary

Hardware Information

Getting Function and Property Help

Configuring Hardware Properties

Setting and Verifying Hardware Properties

Setting the Sampling Rate

Setting the Out-of-Data Value

Additional Hardware Properties

Managing Output Data

Using putdata

Example: Using putdata

Configuring Triggers

Trigger Types

Trigger Times

Configuring Events and Actions

Recording and Retrieving Event Information

Action Properties and Functions

Examples: Using Action Properties and Functions

Engineering Unit Conversion

Function Reference

The Function Reference Page Format

Data Acquisition Toolbox Functions

Property Reference

The Property Description Format

Analog Input Properties

Analog Output Properties

Device-Specific Properties

Sound Card Properties

National Instruments Properties

Testing Your Hardware

Testing Your Sound Card

Microphone and Sound Card Types

Testing with a Microphone

Testing with a CD Player

Running in Full Duplex Mode



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