用户手册目录NI PXI-7831R User Manual1Support2Worldwide Technical Support and Product Information2National Instruments Corporate Headquarters2Worldwide Offices2Important Information3Warranty3Copyright3Trademarks3Patents3WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS3Compliance4Contents5About This Manual7Conventions7Reconfigurable I/O Documentation8Related Documentation8Chapter 1 Introduction9About the Reconfigurable I/O Devices9Using PXI with CompactPCI10Table 1-1. Pins Used by the NI PXI-7831R11What You Need to Get Started11Getting Started with Windows 2000/XP11Getting Started with the RT Module12Overview of Reconfigurable I/O13Reconfigurable I/O Concept13Flexible Functionality13User-Defined I/O Resources14Device-Embedded Logic and Processing14Reconfigurable I/O Architecture14Figure 1-1. High-Level FPGA Functional Overview14Figure 1-2. FPGA Logic Use in an Application with Many Fixed I/O Resources15Figure 1-3. FPGA Logic Use in an Application with Higher-Level Functions16Reconfigurable I/O Applications16Software Development16FPGA Module17RT Module17Cables and Optional Equipment17Table 1-2. Cables and Accessories18Custom Cabling18Unpacking19Safety Information19Chapter 2 Hardware Overview of the NI PXI-7831R22Figure 2-1. NI PXI-7831R Block Diagram22Figure 2-2. Parts Locator Diagram for the NI PXI-7831R23Analog Input23Table 2-1. Ideal Output Code and AI Voltage Mapping23Input Modes24Table 2-2. Available Input Modes for the NI PXI-7831R24Input Range24Connecting Analog Input Signals25Figure 2-3. NI PXI-7831R Instrumentation Amplifier26Types of Signal Sources26Floating Signal Sources27Ground-Referenced Signal Sources27Input Modes27Figure 2-4. Summary of Analog Input Connections28Differential Connection Considerations (DIFF Input Mode)29Differential Connections for Ground-Referenced Signal Sources29Figure 2-5. Differential Input Connections for Ground-Referenced Signals30Differential Connections for Nonreferenced or Floating Signal Sources30Figure 2-6. Differential Input Connections for Nonreferenced Signals31Single-Ended Connection Considerations32Single-Ended Connections for Floating Signal Sources (RSE Input Mode)33Figure 2-7. Single-Ended Input Connections for Nonreferenced or Floating Signals33Single-Ended Connections for Grounded Signal Sources (NRSE Input Mode)33Figure 2-8. Single-Ended Input Connections for Ground-Referenced Signals34Common-Mode Signal Rejection Considerations34Analog Output35Table 2-3. Ideal Output Voltage and Input Code Mapping35Connecting Analog Output Signals35Figure 2-9. Analog Output Connections36Digital I/O36Connecting Digital I/O Signals36Figure 2-10. Example Digital I/O Connections38Table 2-4. DIO Signal Guidelines for the NI PXI-7831R39PXI Trigger Bus39PXI Local Bus40Switch Settings41Figure 2-11. Switch Settings on Switch SW141Power Connections42Field Wiring Considerations42Chapter 3 Calibration44Loading Calibration Constants44Internal Calibration44External Calibration45Appendix A Specifications46Appendix B Connecting I/O Signals54Figure B-1. NI PXI-7831R Connector Locations55Figure B-2. NI PXI-7831R I/O Connector Pin Assignments56Table B-1. I/O Connector Signal Descriptions57Table B-2. NI PXI-7831R I/O Signal Summary58Figure B-3. Connector Pinouts When Using NSC68-262650 Cable60Figure B-4. Connector Pinouts When Using the NSC68-5050 Cable61Appendix C Using the SCB-68 Shielded Connector Block62Figure C-1. General-Purpose Switch Configuration for the SCB-68 Terminal Block62Figure C-2. SCB-68 Quick Reference Label for the NI PXI-7831R63Appendix D Technical Support and Professional Services64Glossary66Numbers/Symbols66A-B67C-D68E-H69I-M70N-P71R-S72T-W73文件大小: 684.8 KB页数: 73Language: English打开用户手册
用户手册目录NI PXI-7831R User Manual1Support2Worldwide Technical Support and Product Information2National Instruments Corporate Headquarters2Worldwide Offices2Important Information3Warranty3Copyright3Trademarks3Patents3WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS3Compliance4Contents5About This Manual7Conventions7Reconfigurable I/O Documentation8Related Documentation8Chapter 1 Introduction9About the Reconfigurable I/O Devices9Using PXI with CompactPCI10Table 1-1. Pins Used by the NI PXI-7831R11What You Need to Get Started11Getting Started with Windows 2000/XP11Getting Started with the RT Module12Overview of Reconfigurable I/O13Reconfigurable I/O Concept13Flexible Functionality13User-Defined I/O Resources14Device-Embedded Logic and Processing14Reconfigurable I/O Architecture14Figure 1-1. High-Level FPGA Functional Overview14Figure 1-2. FPGA Logic Use in an Application with Many Fixed I/O Resources15Figure 1-3. FPGA Logic Use in an Application with Higher-Level Functions16Reconfigurable I/O Applications16Software Development16FPGA Module17RT Module17Cables and Optional Equipment17Table 1-2. Cables and Accessories18Custom Cabling18Unpacking19Safety Information19Chapter 2 Hardware Overview of the NI PXI-7831R22Figure 2-1. NI PXI-7831R Block Diagram22Figure 2-2. Parts Locator Diagram for the NI PXI-7831R23Analog Input23Table 2-1. Ideal Output Code and AI Voltage Mapping23Input Modes24Table 2-2. Available Input Modes for the NI PXI-7831R24Input Range24Connecting Analog Input Signals25Figure 2-3. NI PXI-7831R Instrumentation Amplifier26Types of Signal Sources26Floating Signal Sources27Ground-Referenced Signal Sources27Input Modes27Figure 2-4. Summary of Analog Input Connections28Differential Connection Considerations (DIFF Input Mode)29Differential Connections for Ground-Referenced Signal Sources29Figure 2-5. Differential Input Connections for Ground-Referenced Signals30Differential Connections for Nonreferenced or Floating Signal Sources30Figure 2-6. Differential Input Connections for Nonreferenced Signals31Single-Ended Connection Considerations32Single-Ended Connections for Floating Signal Sources (RSE Input Mode)33Figure 2-7. Single-Ended Input Connections for Nonreferenced or Floating Signals33Single-Ended Connections for Grounded Signal Sources (NRSE Input Mode)33Figure 2-8. Single-Ended Input Connections for Ground-Referenced Signals34Common-Mode Signal Rejection Considerations34Analog Output35Table 2-3. Ideal Output Voltage and Input Code Mapping35Connecting Analog Output Signals35Figure 2-9. Analog Output Connections36Digital I/O36Connecting Digital I/O Signals36Figure 2-10. Example Digital I/O Connections38Table 2-4. DIO Signal Guidelines for the NI PXI-7831R39PXI Trigger Bus39PXI Local Bus40Switch Settings41Figure 2-11. Switch Settings on Switch SW141Power Connections42Field Wiring Considerations42Chapter 3 Calibration44Loading Calibration Constants44Internal Calibration44External Calibration45Appendix A Specifications46Appendix B Connecting I/O Signals54Figure B-1. NI PXI-7831R Connector Locations55Figure B-2. NI PXI-7831R I/O Connector Pin Assignments56Table B-1. I/O Connector Signal Descriptions57Table B-2. NI PXI-7831R I/O Signal Summary58Figure B-3. Connector Pinouts When Using NSC68-262650 Cable60Figure B-4. Connector Pinouts When Using the NSC68-5050 Cable61Appendix C Using the SCB-68 Shielded Connector Block62Figure C-1. General-Purpose Switch Configuration for the SCB-68 Terminal Block62Figure C-2. SCB-68 Quick Reference Label for the NI PXI-7831R63Appendix D Technical Support and Professional Services64Glossary66Numbers/Symbols66A-B67C-D68E-H69I-M70N-P71R-S72T-W73文件大小: 684.8 KB页数: 73Language: English打开用户手册