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National Instruments DAQ Series - User Manual

National Instruments DAQ Series
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DAQ
DAQCard
-700 User Manual
Multifunction I/O Devices for the PCMCIA Bus
DAQCard-700 User Manual
December 2001 Edition
Part Number 320676D-01
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National Instruments DAQ Series Specifications

General IconGeneral
Device TypeData Acquisition (DAQ)
SeriesDAQ Series
ManufacturerNational Instruments
CategoryRecording Equipment
Input ChannelsVaries by model (e.g., 8, 16, 32, etc.)
Sampling RateVaries by model (e.g., 100 kS/s, 1 MS/s, etc.)
ResolutionVaries by model (e.g., 12-bit, 16-bit, 24-bit)
InterfaceUSB, PCI, PXI, Ethernet
Software CompatibilityLabVIEW, MATLAB

Summary

Important Information

Warranty

Details the warranty terms and conditions for the DAQCard-700.

Copyright and Trademarks

Information on copyright laws, trademarks, and product names.

Warnings for Product Use

Critical warnings regarding the use of National Instruments products in specific applications.

About This Manual

Conventions Used in This Manual

Explains typographical and symbolic conventions used throughout the document.

National Instruments Documentation

Guides users on which NI documentation to consult for different aspects of the system.

Chapter 1 Introduction

About the DAQCard-700

Overview of the DAQCard-700 features, low-cost, low-power AI, DIO, and TIO card.

What You Need to Get Started

Lists essential hardware and software required for setup and operation of the DAQCard-700.

Software Programming Choices

Discusses using NI-DAQ with various Application Development Environments (ADEs).

NI-DAQ

Explains NI-DAQ's role, functions, and consistent software interface for DAQCard-700.

National Instruments ADE Software

Details LabVIEW and Measurement Studio as development environments for DAQ applications.

Custom Cabling

Information and guidelines for designing and using custom cables with the DAQCard-700.

Unpacking

Instructions on how to unpack the DAQCard-700 safely and check for damage.

Safety Information

Important safety precautions and guidelines for installing and using the DAQCard-700.

Chapter 2 Installing and Configuring the DAQCard-700

Installing the Software

Steps for installing the Application Development Environment (ADE) and NI-DAQ.

Installing the Hardware

General instructions for physically installing the DAQCard-700 into a PCMCIA slot.

Configuring the DAQCard-700

Overview of software configurability for AI coupling, range, and other settings.

Configuring Analog Input

Details on default AI configurations and available settings for analog input.

Analog Input Mode

Explains the two input modes: RSE (Referenced Single-Ended) and DIFF (Differential).

Configuring Digital IO

Describes the configuration for digital input and output ports on the DAQCard-700.

Configuring Counters

Information on using the MSM82C54 for general-purpose applications and timing.

Chapter 3 Connecting Signals

IO Connector

Details the pin assignments and general setup for the DAQCard-700 I/O connector.

Signal Connection Descriptions

Provides detailed descriptions of each pin on the DAQCard-700 I/O connector.

Connecting Analog Input Signals

Guidelines for connecting analog input signals to the DAQCard-700, including AIGND and ACH pins.

Types of Signal Sources

Discusses ground-referenced and floating signal sources for proper measurement.

Measurement System Types

Describes ground-referenced and floating measurement systems for context.

Input Configurations

Explains how to configure the DAQCard-700 for DIFF or RSE input modes.

Single-Ended Mode (RSE)

Details the RSE input mode, its operation, and its use for 16 AI channels.

Differential Mode (DIFF)

Explains the DIFF input mode, its operation, and its use for 8 AI channels.

Recommended Input Configurations

Summarizes recommended input configurations for different system and signal types.

Single-Ended Connection Considerations

Criteria and considerations for using single-ended connections with RSE mode.

Single-Ended Analog Input Signal Connections

Illustrates how to connect signal sources using single-ended mode.

Differential Connection Considerations

Discusses conditions for using DIFF mode and its benefits for noise reduction.

Differential Connections for Grounded Signal Sources

Shows how to connect grounded signal sources using DIFF input mode.

Differential Connections for Floating Signal Sources

Illustrates connecting floating signal sources using DIFF input mode with bias resistors.

Common-Mode Signal Rejection Considerations

Explains common-mode rejection and calculations for the DAQCard-700.

Connecting Digital IO Signals

Guidelines for connecting digital input and output signals to the DAQCard-700.

Digital IO Signal Connections

Provides examples of connecting digital signals, including TTL and LEDs.

Connecting Power

Details the +5 V power pin and its current limitations.

Connecting Timers

Information on connecting TIO signals and using the MSM82C54 counter/timers.

Data Acquisition Counter and Timing Connections

Explains using counter 0 or EXTCONV* for timed A/D conversions.

General-Purpose Counter and Timing Signal Connections

Discusses using GATE, CLK, and OUT signals for counter applications.

Chapter 4 Theory of Operation

Functional Overview

Provides a block diagram and overview of the DAQCard-700's functional components.

PCMCIA IO Channel Interface Circuitry

Explains the architecture of the PCMCIA interface for data transfer and control.

Analog Input and Data Acquisition Circuitry

Details the AI channels, ADC, and FIFO buffer for data acquisition.

Analog Input Circuitry

Describes the input multiplexer, gain stage, and ADC for analog signal processing.

Data Acquisition Timing Circuitry

Explains how clocks and timing signals manage data acquisition intervals.

Single-Channel Data Acquisition

Describes the process of acquiring data from a single analog channel.

Multichannel (Scanned) Data Acquisition

Explains scanning multiple channels for data acquisition.

Data Acquisition Rates

Discusses factors limiting data acquisition speed and accuracy.

Digital IO Circuitry

Details the digital input/output lines and registers for TTL compatibility.

Timing IO Circuitry

Explains the use of the MSM82C54 counter/timer for timing and general I/O.

Appendix A Specifications

Input Characteristics

Lists key input characteristics like channels, resolution, sampling rate, and ranges.

Transfer Characteristics

Details accuracy, DNL, and offset/gain errors of the ADC.

Amplifier Characteristics

Specifies input impedance and CMRR for the instrumentation amplifier.

Dynamic Characteristics

Covers settling time and system noise for the DAQCard-700.

Stability

Information on warm-up time and onboard calibration reference.

Digital IO

Specifications for digital input and output channels and compatibility.

Timing IO

Specifications for counter/timer channels and compatibility.

Digital Logic Levels for MSM82 C54

Defines voltage levels for digital signals used with the MSM82C54.

Power Requirement

Specifies the power consumption and voltage requirements of the DAQCard-700.

Physical

Details the physical form factor, PC Card type, and connector type.

Maximum Working Voltage

Defines maximum working voltages for channel-to-earth and channel-to-channel.

Environmental

Lists operating and storage temperature, humidity, and altitude limits.

Safety

Lists safety standards met by the DAQCard-700.

Electromagnetic Compatibility

Details CE, C-Tick, and FCC compliance for emissions and immunity.

Appendix B Differences between the PC-LPM-16 and the DAQCard-700

Functionality Differences

Summarizes key functional differences between the DAQCard-700 and PC-LPM-16.

Appendix C Common Questions

Installing and Configuring the DAQCard-700

Addresses common questions related to installing and configuring the DAQCard-700.

Operating the DAQCard-700

Answers common questions about operating the DAQCard-700, including differential input issues.

Appendix D Technical Support Resources

Web Support

Information on accessing online support resources for installation and troubleshooting.

NI Developer Zone

Resource for learning about measurement and automation systems and sharing techniques.

Customer Education

Information on training options, courses, and schedules offered by NI.

System Integration

Details on consulting and system integration services from NI Alliance members.

Glossary

Prefixes

Defines common prefixes used in scientific and technical contexts.

NumbersSymbols

Lists common numbers and symbols with their meanings.

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