Document Outline

• SCXI-1503 User Manual
• Support
  • Worldwide Technical Support and Product Information
  • National Instruments Corporate Headquarters
  • Worldwide Offices
• Important Information
  • Warranty
  • Copyright
  • Trademarks
  • Patents
  • WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS
• Conventions
• Contents
• Chapter 1 About the SCXI-1503
  • What You Need to Get Started
  • National Instruments Documentation
  • Installing Application Software, NI-DAQ, and the E/M Series DAQ Device
    • Installing the SCXI-1503 Module into the SCXI Chassis
    • Installing the Terminal Block
      • Table 1-1. Supported SCXI-1503 Terminal Blocks
    • Configuring the SCXI System Software
  • Verifying the SCXI-1503 Installation
• Chapter 2 Connecting Signals
  • Analog Input Signal Connections
    • Ground-Referencing the Signals
  • Connecting Resistive Devices to the SCXI-1503
    • 4-Wire Configuration
      • Figure 2-1. 4-Wire Resistive Sensor Connected in a 4-Wire Configuration
    • 2-Wire Configuration
      • Figure 2-2. 2-Wire Resistive Sensor Connected in a 2-Wire Configuration
    • 3-Wire Resistive Sensor Configuration
      • Figure 2-3. 3-Wire Resistive Sensor Configuration
    • Lead-Resistance Compensation Using a 3-Wire Resistive Sensor and Two Matched Current Sources
      • Figure 2-4. 3-Wire Configuration Using Matched Current Sources
  • Front Connector
    • Table 2-1. Front Signal Pin Assignments
    • Table 2-2. Signal Descriptions
  • Rear Signal Connector
    • Table 2-3. Rear Signal Pin Assignments
    • Rear Signal Connector Descriptions
      • Table 2-4. SCXI-1503 50-Pin Rear Connector Signals
• Chapter 3 Configuring and Testing
  • SCXI-1503 Software-Configurable Settings
    • Common Software-Configurable Settings
      • Gain/Input Range
      • Input Coupling
      • CJC Source/Value
      • Auto-Zero
  • Configurable Settings in MAX
    • NI-DAQmx
      • Creating a Global Channel or Task
  • Verifying the Signal
    • Verifying the Signal in NI-DAQmx Using a Task or Global Channel
• Chapter 4 Theory of Operation
  • Figure 4-1. Block Diagram of SCXI-1503
  • Rear Signal Connector, SCXIbus Connector, and SCXIbus Interface
  • Digital Control Circuitry
  • Analog Circuitry
    • Analog Input Channels
  • Operation of the Current Sources
  • Theory of Multiplexed Operation
  • Measuring Temperature with Resistive Transducers
    • RTDs
      • RTD Measurement Errors
      • Figure 4-2. 2-Wire RTD Measurement
      • The Relationship Between Resistance and Temperature in RTDs
      • Figure 4-3. Resistance-Temperature Curve for a 100 Ω Platinum RTD, α = 0.00385
      • Table 4-1. Platinum RTD Types
    • Thermistors
      • Figure 4-4. Resistance-Temperature Curve for a 2,252 Ω Thermistor
      • Thermistor Measurement Circuits
      • Figure 4-5. Thermistor Measurement with Constant Current Excitation
      • Resistance/Temperature Characteristic of Thermistors
• Chapter 5 Using the SCXI-1503
  • Developing Your Application in NI-DAQmx
    • Typical Program Flowchart
      • Figure 5-1. Typical Program Flowchart for Voltage Measurement Channels
    • General Discussion of Typical Flowchart
      • Creating a Task Using DAQ Assistant or Programmatically
      • Adjusting Timing and Triggering
      • Configuring Channel Properties
      • Table 5-1. NI-DAQmx Voltage Measurement Properties
      • Table 5-2. NI-DAQmx RTD Measurement Properties
      • Table 5-3. NI-DAQmx Thermistor Measurement Properties
      • Table 5-4. NI-DAQmx Thermocouple Measurement Properties
      • Acquiring, Analyzing, and Presenting
      • Completing the Application
    • Developing an Application Using LabVIEW
      • Table 5-5. Programming a Task in LabVIEW
      • Using a NI-DAQmx Channel Property Node in LabVIEW
    • Specifying Channel Strings in NI-DAQmx
      • Text Based ADEs
      • Programmable NI-DAQmx Properties
  • Calibration
    • Internal/Self-Calibration
    • External Calibration
• Appendix A Specifications
  • Table A-1. RTD Measurement Accuracy
  • Figure A-1. SCXI-1503 Dimensions
• Appendix B Removing the SCXI-1503
  • Figure B-1. Removing the SCXI-1503
• Appendix C Common Questions
• Glossary
  • Numbers/Symbols
  • A
  • B-D
  • E-I
  • J-N
  • O-S
  • T-V
  • W
• Index
  • Numerics
  • A-C
  • D-N
  • O-S
  • T-V