User ManualTable of ContentsSCXI-1125 Calibration Procedure1Introduction1What Is Calibration?1Why Should You Calibrate?1How Often Should You Calibrate?1Equipment and Other Test Requirements2Test Equipment2Software and Documentation2Software2Documentation3Test Conditions3Calibration3Setting Up Your Module4Verifying Gain and Offset Errors4Adjusting for Gain and Offset Errors6Determining Gain and Offset Errors6Adjusting Calibration Constants9Verifying Adjusted Values10Front and Rear Signal Connector Diagrams11Figure 1. Front Signal Connector Pin Assignments11Figure 2. Rear Signal Connector Pin Assignments12Specifications13Table 1. SCXI-1125 Specifications at 25 C ±10 C13Size: 144 KBPages: 14Language: EnglishOpen manual
User ManualTable of ContentsSCXI-1125 User Manual1Support2Worldwide Technical Support and Product Information2National Instruments Corporate Headquarters2Worldwide Offices2Important Information3Warranty3Copyright3Trademarks3Patents3WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS3Conventions4Contents5Chapter 1 About the SCXI-112510What You Need to Get Started10National Instruments Documentation11Installing Application Software, NI-DAQ, and the DAQ Device13Installing the SCXI-1125 Module into the SCXI Chassis13Connecting the SCXI-1125 in an SCXI Chassis to an E/M Series DAQ Device for Multiplexed Scanning13Connecting the SCXI-1125 in a PXI/SCXI Combination Chassis to an E/M Series DAQ Device for Multiplexed Scanning13Connecting the SCXI-1125 to a n E/M Series DAQ Device for Parallel Scanning14Verifying the SCXI-1125 Installation in Software14Installing SCXI Using NI-DAQmx in Software14Manually Adding Modules in NI-DAQmx15Installing SCXI Using Traditional NI-DAQ (Legacy) in Software15Manually Adding Modules in Traditional NI-DAQ (Legacy)15Verifying and Self-Testing the Installation15Troubleshooting the Self-Test Verification16Troubleshooting in NI-DAQmx16Chapter 2 Connecting Signals18AC and DC Voltage Connections18Ground-Referenced Signal19Figure 2-1. Connecting a Ground-Referenced Signal19Floating Signal20Figure 2-2. Connecting a Floating Signal20AC-Coupling21Figure 2-3. Connecting a Floating AC-Coupled Signal21Figure 2-4. Connecting a Ground-Referenced AC-Coupled Signal21Pin Assignments22Table 2-1. Front Signal Pin Assignments23Temperature Sensor Connection24Rear Signal Connector24Table 2-2. Rear Signal Pin Assignments25Chapter 3 Configuring and Testing26SCXI-1125 Software-Configurable Settings26Common Software-Configurable Settings26Filter Bandwidth26Gain/Input Range26Connecting the SCXI-1125 in an SCXI Chassis to an E/M Series DAQ Device for Multiplexed Scanning27Connecting the SCXI-1125 in a PXI/SCXI Combination Chassis to an E/M Series DAQ Device for Multiplexed Scanning27Configurable Settings in MAX27NI-DAQmx28Creating a Voltage Global Channel or Task28Traditional NI-DAQ (Legacy)29Configuring Module Property Pages in Traditional NI-DAQ (Legacy)30Creating a Virtual Channel31Verifying the Signal31Verifying the Signal in NI-DAQmx Using a Task or Global Channel31Verifying the Signal in Traditional NI-DAQ (Legacy)32Verifying the Signal Using Channel Strings32Verifying the Signal Using Virtual Channel33Chapter 4 Theory of Operation34Figure 4-1. SCXI-1125 Block Diagram34Gain34Filter Bandwidth and Cutoff Frequency35Operating in Multiplexed Mode35Multiplexed Hardware Operation Theory36Operating in Parallel Mode36Theory of Parallel Hardware Operation37Chapter 5 Using the SCXI-112538Temperature Measurements Using Thermocouples38Making High-Voltage Measurements41Table 5-1. Extended Gain and Range Using the SCXI-1327 or SCXI-1313A41Table 5-2. Extended Gain and Range Using the TBX-131642Developing Your Application in NI-DAQmx42Typical Program Flowchart42Figure 5-1. Typical Program Flowchart43General Discussion of Typical Flowchart44Creating a Task Using DAQ Assistant or Programmatically44Adjusting Timing and Triggering44Configuring Channel Properties45Table 5-3. NI-DAQmx Properties45Acquiring, Analyzing, and Presenting46Completing the Application46Developing an Application Using LabVIEW46Table 5-4. Programming a Task in LabVIEW47Using a DAQmx Channel Property Node in LabVIEW48Figure 5-2. LabVIEW Channel Property Node with Lowpass Frequency Set at 10 kHz on Channel SC1Mod1/ai049Specifying Channel Strings in NI-DAQmx49Text Based ADEs51Measurement Studio (Visual Basic, .NET, and C#)51Programmable NI-DAQmx Properties51Table 5-5. NI-DAQmx Properties52Developing Your Application in Traditional NI-DAQ (Legacy)52Traditional NI-DAQ (Legacy) in LabVIEW53Typical Program Flow54Figure 5-3. Typical SCXI-1125 Program Flow with Traditional NI-DAQ (Legacy)54Configure the SCXI-1125 Settings Using Traditional NI-DAQ (Legacy) in LabVIEW55Table 5-6. Settings for Configuring the SCXI-1125 Through the AI Parameter55Figure 5-4. Using the AI Parameter VI to Set Up the SCXI-112556Configure, Start Acquisition, and Take Readings Using Traditional NI-DAQ (Legacy) in LabVIEW56Convert Scaling Using Traditional NI-DAQ (Legacy) in LabVIEW57Analyze and Display Using Traditional NI-DAQ (Legacy) in LabVIEW57Traditional NI-DAQ (Legacy) in Text-Based ADEs58Configuring System Settings Using Traditional NI-DAQ (Legacy) C API58Table 5-7. Configuration Functions59Configure Module Settings Using Traditional NI-DAQ (Legacy) C API59Table 5-8. NI-DAQ Functions Used to Configure SCXI-112560Perform Offset Null Compensation Using Traditional NI-DAQ (Legacy) C API60Perform Acquisition Using Traditional NI-DAQ (Legacy) C API60Perform Scaling, Analysis, and Display61Using Software for Multiplexed Scanning61LabVIEW and the SCXI Channel String62LabVIEW and the Virtual Channel String63Performing a Multiplexed Scan64C and Low-Level DAQ Functions65Using Software for Parallel Scanning65LabVIEW and Parallel Mode65C and Parallel Mode66Other Application Documentation and Material66Traditional NI-DAQ (Legacy) CVI Examples66Traditional NI-DAQ (Legacy) Measurement Studio Examples66Calibration67Calibration Procedures67One-Point Offset Calibration68Table 5-9. Gain Values and Input Limits68Two-Point Gain and Offset Calibration69Appendix A Specifications70Table A-1. Input Signal Range Versus Gain70Figure A-1. SCXI-1125 Dimensions76Table A-2. Terminal Block Maximum Voltages77Appendix B Using SCXI Channel Strings with Traditional NI-DAQ (Legacy) 7.0 or Later80Appendix C Removing the SCXI-112582Figure C-1. Removing the SCXI-112583Appendix D Common Questions84Table D-1. Comparison of the SCXI-1125 with the SCXI-112084Table D-2. Digital Signals on the SCXI-112586Glossary88Numbers/Symbol88A - B89C - D90E91F - I92K - M93N - P94R - S95T - W97Index98A - D98E - M99N - S100T - V101Size: 1.31 MBPages: 101Language: EnglishOpen manual
User ManualTable of ContentsSCXI-1125 User Manual1Support2Worldwide Technical Support and Product Information2National Instruments Corporate Headquarters2Worldwide Offices2Important Information3Warranty3Copyright3Trademarks3Patents3WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS3Conventions4Contents5Chapter 1 About the SCXI-112510What You Need to Get Started10National Instruments Documentation11Installing Application Software, NI-DAQ, and the DAQ Device13Installing the SCXI-1125 Module into the SCXI Chassis13Connecting the SCXI-1125 in an SCXI Chassis to an E/M Series DAQ Device for Multiplexed Scanning13Connecting the SCXI-1125 in a PXI/SCXI Combination Chassis to an E/M Series DAQ Device for Multiplexed Scanning13Connecting the SCXI-1125 to a n E/M Series DAQ Device for Parallel Scanning14Verifying the SCXI-1125 Installation in Software14Installing SCXI Using NI-DAQmx in Software14Manually Adding Modules in NI-DAQmx15Installing SCXI Using Traditional NI-DAQ (Legacy) in Software15Manually Adding Modules in Traditional NI-DAQ (Legacy)15Verifying and Self-Testing the Installation15Troubleshooting the Self-Test Verification16Troubleshooting in NI-DAQmx16Chapter 2 Connecting Signals18AC and DC Voltage Connections18Ground-Referenced Signal19Figure 2-1. Connecting a Ground-Referenced Signal19Floating Signal20Figure 2-2. Connecting a Floating Signal20AC-Coupling21Figure 2-3. Connecting a Floating AC-Coupled Signal21Figure 2-4. Connecting a Ground-Referenced AC-Coupled Signal21Pin Assignments22Table 2-1. Front Signal Pin Assignments23Temperature Sensor Connection24Rear Signal Connector24Table 2-2. Rear Signal Pin Assignments25Chapter 3 Configuring and Testing26SCXI-1125 Software-Configurable Settings26Common Software-Configurable Settings26Filter Bandwidth26Gain/Input Range26Connecting the SCXI-1125 in an SCXI Chassis to an E/M Series DAQ Device for Multiplexed Scanning27Connecting the SCXI-1125 in a PXI/SCXI Combination Chassis to an E/M Series DAQ Device for Multiplexed Scanning27Configurable Settings in MAX27NI-DAQmx28Creating a Voltage Global Channel or Task28Traditional NI-DAQ (Legacy)29Configuring Module Property Pages in Traditional NI-DAQ (Legacy)30Creating a Virtual Channel31Verifying the Signal31Verifying the Signal in NI-DAQmx Using a Task or Global Channel31Verifying the Signal in Traditional NI-DAQ (Legacy)32Verifying the Signal Using Channel Strings32Verifying the Signal Using Virtual Channel33Chapter 4 Theory of Operation34Figure 4-1. SCXI-1125 Block Diagram34Gain34Filter Bandwidth and Cutoff Frequency35Operating in Multiplexed Mode35Multiplexed Hardware Operation Theory36Operating in Parallel Mode36Theory of Parallel Hardware Operation37Chapter 5 Using the SCXI-112538Temperature Measurements Using Thermocouples38Making High-Voltage Measurements41Table 5-1. Extended Gain and Range Using the SCXI-1327 or SCXI-1313A41Table 5-2. Extended Gain and Range Using the TBX-131642Developing Your Application in NI-DAQmx42Typical Program Flowchart42Figure 5-1. Typical Program Flowchart43General Discussion of Typical Flowchart44Creating a Task Using DAQ Assistant or Programmatically44Adjusting Timing and Triggering44Configuring Channel Properties45Table 5-3. NI-DAQmx Properties45Acquiring, Analyzing, and Presenting46Completing the Application46Developing an Application Using LabVIEW46Table 5-4. Programming a Task in LabVIEW47Using a DAQmx Channel Property Node in LabVIEW48Figure 5-2. LabVIEW Channel Property Node with Lowpass Frequency Set at 10 kHz on Channel SC1Mod1/ai049Specifying Channel Strings in NI-DAQmx49Text Based ADEs51Measurement Studio (Visual Basic, .NET, and C#)51Programmable NI-DAQmx Properties51Table 5-5. NI-DAQmx Properties52Developing Your Application in Traditional NI-DAQ (Legacy)52Traditional NI-DAQ (Legacy) in LabVIEW53Typical Program Flow54Figure 5-3. Typical SCXI-1125 Program Flow with Traditional NI-DAQ (Legacy)54Configure the SCXI-1125 Settings Using Traditional NI-DAQ (Legacy) in LabVIEW55Table 5-6. Settings for Configuring the SCXI-1125 Through the AI Parameter55Figure 5-4. Using the AI Parameter VI to Set Up the SCXI-112556Configure, Start Acquisition, and Take Readings Using Traditional NI-DAQ (Legacy) in LabVIEW56Convert Scaling Using Traditional NI-DAQ (Legacy) in LabVIEW57Analyze and Display Using Traditional NI-DAQ (Legacy) in LabVIEW57Traditional NI-DAQ (Legacy) in Text-Based ADEs58Configuring System Settings Using Traditional NI-DAQ (Legacy) C API58Table 5-7. Configuration Functions59Configure Module Settings Using Traditional NI-DAQ (Legacy) C API59Table 5-8. NI-DAQ Functions Used to Configure SCXI-112560Perform Offset Null Compensation Using Traditional NI-DAQ (Legacy) C API60Perform Acquisition Using Traditional NI-DAQ (Legacy) C API60Perform Scaling, Analysis, and Display61Using Software for Multiplexed Scanning61LabVIEW and the SCXI Channel String62LabVIEW and the Virtual Channel String63Performing a Multiplexed Scan64C and Low-Level DAQ Functions65Using Software for Parallel Scanning65LabVIEW and Parallel Mode65C and Parallel Mode66Other Application Documentation and Material66Traditional NI-DAQ (Legacy) CVI Examples66Traditional NI-DAQ (Legacy) Measurement Studio Examples66Calibration67Calibration Procedures67One-Point Offset Calibration68Table 5-9. Gain Values and Input Limits68Two-Point Gain and Offset Calibration69Appendix A Specifications70Table A-1. Input Signal Range Versus Gain70Figure A-1. SCXI-1125 Dimensions76Table A-2. Terminal Block Maximum Voltages77Appendix B Using SCXI Channel Strings with Traditional NI-DAQ (Legacy) 7.0 or Later80Appendix C Removing the SCXI-112582Figure C-1. Removing the SCXI-112583Appendix D Common Questions84Table D-1. Comparison of the SCXI-1125 with the SCXI-112084Table D-2. Digital Signals on the SCXI-112586Glossary88Numbers/Symbol88A - B89C - D90E91F - I92K - M93N - P94R - S95T - W97Index98A - D98E - M99N - S100T - V101Size: 1.31 MBPages: 101Language: EnglishOpen manual
