用户手册目录SCXI-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 - V101文件大小: 1.3 MB页数: 101Language: English打开用户手册