Document Outline

• SCXI-1125 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-1125
  • What You Need to Get Started
  • National Instruments Documentation
  • Installing Application Software, NI-DAQ, and the DAQ Device
    • Installing the SCXI-1125 Module into the SCXI Chassis
    • Connecting the SCXI-1125 in an SCXI Chassis to an E/M Series DAQ Device for Multiplexed Scanning
    • Connecting the SCXI-1125 in a PXI/SCXI Combination Chassis to an E/M Series DAQ Device for Multiplexed Scanning
    • Connecting the SCXI-1125 to a n E/M Series DAQ Device for Parallel Scanning
  • Verifying the SCXI-1125 Installation in Software
    • Installing SCXI Using NI-DAQmx in Software
    • Manually Adding Modules in NI-DAQmx
    • Installing SCXI Using Traditional NI-DAQ (Legacy) in Software
    • Manually Adding Modules in Traditional NI-DAQ (Legacy)
    • Verifying and Self-Testing the Installation
  • Troubleshooting the Self-Test Verification
    • Troubleshooting in NI-DAQmx
• Chapter 2 Connecting Signals
  • AC and DC Voltage Connections
    • Ground-Referenced Signal
      • Figure 2-1. Connecting a Ground-Referenced Signal
    • Floating Signal
      • Figure 2-2. Connecting a Floating Signal
    • AC-Coupling
      • Figure 2-3. Connecting a Floating AC-Coupled Signal
      • Figure 2-4. Connecting a Ground-Referenced AC-Coupled Signal
  • Pin Assignments
    • Table 2-1. Front Signal Pin Assignments
    • Temperature Sensor Connection
    • Rear Signal Connector
      • Table 2-2. Rear Signal Pin Assignments
• Chapter 3 Configuring and Testing
  • SCXI-1125 Software-Configurable Settings
    • Common Software-Configurable Settings
      • Filter Bandwidth
      • Gain/Input Range
    • Connecting the SCXI-1125 in an SCXI Chassis to an E/M Series DAQ Device for Multiplexed Scanning
    • Connecting the SCXI-1125 in a PXI/SCXI Combination Chassis to an E/M Series DAQ Device for Multiplexed Scanning
  • Configurable Settings in MAX
    • NI-DAQmx
      • Creating a Voltage Global Channel or Task
    • Traditional NI-DAQ (Legacy)
      • Configuring Module Property Pages in Traditional NI-DAQ (Legacy)
      • Creating a Virtual Channel
  • Verifying the Signal
    • Verifying the Signal in NI-DAQmx Using a Task or Global Channel
    • Verifying the Signal in Traditional NI-DAQ (Legacy)
      • Verifying the Signal Using Channel Strings
      • Verifying the Signal Using Virtual Channel
• Chapter 4 Theory of Operation
  • Figure 4-1. SCXI-1125 Block Diagram
  • Gain
  • Filter Bandwidth and Cutoff Frequency
  • Operating in Multiplexed Mode
    • Multiplexed Hardware Operation Theory
  • Operating in Parallel Mode
    • Theory of Parallel Hardware Operation
• Chapter 5 Using the SCXI-1125
  • Temperature Measurements Using Thermocouples
  • Making High-Voltage Measurements
    • Table 5-1. Extended Gain and Range Using the SCXI-1327 or SCXI-1313A
    • Table 5-2. Extended Gain and Range Using the TBX-1316
  • Developing Your Application in NI-DAQmx
    • Typical Program Flowchart
      • Figure 5-1. Typical Program Flowchart
    • General Discussion of Typical Flowchart
      • Creating a Task Using DAQ Assistant or Programmatically
      • Adjusting Timing and Triggering
      • Configuring Channel Properties
      • Table 5-3. NI-DAQmx Properties
      • Acquiring, Analyzing, and Presenting
      • Completing the Application
    • Developing an Application Using LabVIEW
      • Table 5-4. Programming a Task in LabVIEW
      • Using a DAQmx Channel Property Node in LabVIEW
      • Figure 5-2. LabVIEW Channel Property Node with Lowpass Frequency Set at 10 kHz on Channel SC1Mod1/ai0
    • Specifying Channel Strings in NI-DAQmx
      • Text Based ADEs
    • Measurement Studio (Visual Basic, .NET, and C#)
      • Programmable NI-DAQmx Properties
      • Table 5-5. NI-DAQmx Properties
  • Developing Your Application in Traditional NI-DAQ (Legacy)
    • Traditional NI-DAQ (Legacy) in LabVIEW
      • Typical Program Flow
      • Figure 5-3. Typical SCXI-1125 Program Flow with Traditional NI-DAQ (Legacy)
    • Configure the SCXI-1125 Settings Using Traditional NI-DAQ (Legacy) in LabVIEW
      • Table 5-6. Settings for Configuring the SCXI-1125 Through the AI Parameter
      • Figure 5-4. Using the AI Parameter VI to Set Up the SCXI-1125
    • Configure, Start Acquisition, and Take Readings Using Traditional NI-DAQ (Legacy) in LabVIEW
    • Convert Scaling Using Traditional NI-DAQ (Legacy) in LabVIEW
    • Analyze and Display Using Traditional NI-DAQ (Legacy) in LabVIEW
    • Traditional NI-DAQ (Legacy) in Text-Based ADEs
    • Configuring System Settings Using Traditional NI-DAQ (Legacy) C API
      • Table 5-7. Configuration Functions
    • Configure Module Settings Using Traditional NI-DAQ (Legacy) C API
      • Table 5-8. NI-DAQ Functions Used to Configure SCXI-1125
    • Perform Offset Null Compensation Using Traditional NI-DAQ (Legacy) C API
    • Perform Acquisition Using Traditional NI-DAQ (Legacy) C API
    • Perform Scaling, Analysis, and Display
    • Using Software for Multiplexed Scanning
      • LabVIEW and the SCXI Channel String
      • LabVIEW and the Virtual Channel String
    • Performing a Multiplexed Scan
      • C and Low-Level DAQ Functions
    • Using Software for Parallel Scanning
      • LabVIEW and Parallel Mode
      • C and Parallel Mode
  • Other Application Documentation and Material
    • Traditional NI-DAQ (Legacy) CVI Examples
    • Traditional NI-DAQ (Legacy) Measurement Studio Examples
  • Calibration
    • Calibration Procedures
      • One-Point Offset Calibration
      • Table 5-9. Gain Values and Input Limits
      • Two-Point Gain and Offset Calibration
• Appendix A Specifications
  • Table A-1. Input Signal Range Versus Gain
  • Figure A-1. SCXI-1125 Dimensions
  • Table A-2. Terminal Block Maximum Voltages
• Appendix B Using SCXI Channel Strings with Traditional NI-DAQ (Legacy) 7.0 or Later
• Appendix C Removing the SCXI-1125
  • Figure C-1. Removing the SCXI-1125
• Appendix D Common Questions
  • Table D-1. Comparison of the SCXI-1125 with the SCXI-1120
  • Table D-2. Digital Signals on the SCXI-1125
• Glossary
  • Numbers/Symbol
  • A - B
  • C - D
  • E
  • F - I
  • K - M
  • N - P
  • R - S
  • T - W
• Index
  • A - D
  • E - M
  • N - S
  • T - V