用户手册目录NI 7831R User Manual1Support2Worldwide Technical Support and Product Information2National Instruments Corporate Headquarters2Worldwide Offices2Important Information3Warranty3Copyright3Trademarks3Patents3WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS3Compliance4Contents5About This Manual7Conventions7Reconfigurable I/O Documentation8Related Documentation9Chapter 1 Introduction10About the NI 7831R10Using PXI with CompactPCI11Table 1-1. Pins Used by the NI PXI-7831R12Overview of Reconfigurable I/O12Reconfigurable I/O Concept12Flexible Functionality12User-Defined I/O Resources13Device-Embedded Logic and Processing13Reconfigurable I/O Architecture13Figure 1-1. High-Level FPGA Functional Overview13Reconfigurable I/O Applications14Software Development14LabVIEW FPGA Module14LabVIEW Real-Time Module15Cables and Optional Equipment16Table 1-2. Cables and Accessories16Custom Cabling17Safety Information18Chapter 2 Hardware Overview of the NI 7831R20Figure 2-1. NI 7831R Block Diagram20Figure 2-2. Parts Locator Diagram for the NI PXI-7831R21Figure 2-3. Parts Locator Diagram for the NI PCI-7831R22Analog Input22Table 2-1. Ideal Output Code and AI Voltage Mapping23Input Modes23Table 2-2. Available Input Modes for the NI 7831R23Input Range23Connecting Analog Input Signals24Figure 2-4. NI 7831R Instrumentation Amplifier25Types of Signal Sources26Floating Signal Sources26Ground-Referenced Signal Sources26Input Modes26Figure 2-5. Summary of Analog Input Connections27Differential Connection Considerations (DIFF Input Mode)28Differential Connections for Ground-Referenced Signal Sources28Figure 2-6. Differential Input Connections for Ground-Referenced Signals29Differential Connections for Nonreferenced or Floating Signal Sources29Figure 2-7. Differential Input Connections for Nonreferenced Signals30Single-Ended Connection Considerations31Single-Ended Connections for Floating Signal Sources (RSE Input Mode)32Figure 2-8. Single-Ended Input Connections for Nonreferenced or Floating Signals32Single-Ended Connections for Grounded Signal Sources (NRSE Input Mode)32Figure 2-9. Single-Ended Input Connections for Ground-Referenced Signals33Common-Mode Signal Rejection Considerations33Analog Output34Table 2-3. Ideal Output Voltage and Input Code Mapping34Connecting Analog Output Signals34Figure 2-10. Analog Output Connections35Digital I/O35Connecting Digital I/O Signals35Figure 2-11. Example Digital I/O Connections37Table 2-4. DIO Signal Guidelines for the NI 7831R38RTSI Trigger Bus38PXI Local Bus (for NI PXI-7831R only)39Switch Settings40Figure 2-12. Switch Settings on Switch SW140Power Connections41Field Wiring Considerations42Chapter 3 Calibration43Loading Calibration Constants43Internal Calibration43External Calibration44Appendix A Specifications45Appendix B Connecting I/O Signals54Figure B-1. NI 7831R Connector Locations54Figure B-2. NI 7831R I/O Connector Pin Assignments55Table B-1. I/O Connector Signal Descriptions56Table B-2. NI 7831R I/O Signal Summary57Figure B-3. Connector Pinouts when Using NSC68-262650 Cable59Figure B-4. Connector Pinouts when Using the NSC68-5050 Cable60Appendix C Using the SCB-68 Shielded Connector Block61Figure C-1. General-Purpose Switch Configuration for the SCB-68 Terminal Block61Appendix D Technical Support and Professional Services62Glossary64Numbers/Symbols64A-B65C-D66E-H67I-M68N-P69R-S70T-W71文件大小： 789.4 KB页数： 71Language: English打开用户手册
用户手册目录NI 7831R User Manual1Support2Worldwide Technical Support and Product Information2National Instruments Corporate Headquarters2Worldwide Offices2Important Information3Warranty3Copyright3Trademarks3Patents3WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS3Compliance4Contents5About This Manual7Conventions7Reconfigurable I/O Documentation8Related Documentation9Chapter 1 Introduction10About the NI 7831R10Using PXI with CompactPCI11Table 1-1. Pins Used by the NI PXI-7831R12Overview of Reconfigurable I/O12Reconfigurable I/O Concept12Flexible Functionality12User-Defined I/O Resources13Device-Embedded Logic and Processing13Reconfigurable I/O Architecture13Figure 1-1. High-Level FPGA Functional Overview13Reconfigurable I/O Applications14Software Development14LabVIEW FPGA Module14LabVIEW Real-Time Module15Cables and Optional Equipment16Table 1-2. Cables and Accessories16Custom Cabling17Safety Information18Chapter 2 Hardware Overview of the NI 7831R20Figure 2-1. NI 7831R Block Diagram20Figure 2-2. Parts Locator Diagram for the NI PXI-7831R21Figure 2-3. Parts Locator Diagram for the NI PCI-7831R22Analog Input22Table 2-1. Ideal Output Code and AI Voltage Mapping23Input Modes23Table 2-2. Available Input Modes for the NI 7831R23Input Range23Connecting Analog Input Signals24Figure 2-4. NI 7831R Instrumentation Amplifier25Types of Signal Sources26Floating Signal Sources26Ground-Referenced Signal Sources26Input Modes26Figure 2-5. Summary of Analog Input Connections27Differential Connection Considerations (DIFF Input Mode)28Differential Connections for Ground-Referenced Signal Sources28Figure 2-6. Differential Input Connections for Ground-Referenced Signals29Differential Connections for Nonreferenced or Floating Signal Sources29Figure 2-7. Differential Input Connections for Nonreferenced Signals30Single-Ended Connection Considerations31Single-Ended Connections for Floating Signal Sources (RSE Input Mode)32Figure 2-8. Single-Ended Input Connections for Nonreferenced or Floating Signals32Single-Ended Connections for Grounded Signal Sources (NRSE Input Mode)32Figure 2-9. Single-Ended Input Connections for Ground-Referenced Signals33Common-Mode Signal Rejection Considerations33Analog Output34Table 2-3. Ideal Output Voltage and Input Code Mapping34Connecting Analog Output Signals34Figure 2-10. Analog Output Connections35Digital I/O35Connecting Digital I/O Signals35Figure 2-11. Example Digital I/O Connections37Table 2-4. DIO Signal Guidelines for the NI 7831R38RTSI Trigger Bus38PXI Local Bus (for NI PXI-7831R only)39Switch Settings40Figure 2-12. Switch Settings on Switch SW140Power Connections41Field Wiring Considerations42Chapter 3 Calibration43Loading Calibration Constants43Internal Calibration43External Calibration44Appendix A Specifications45Appendix B Connecting I/O Signals54Figure B-1. NI 7831R Connector Locations54Figure B-2. NI 7831R I/O Connector Pin Assignments55Table B-1. I/O Connector Signal Descriptions56Table B-2. NI 7831R I/O Signal Summary57Figure B-3. Connector Pinouts when Using NSC68-262650 Cable59Figure B-4. Connector Pinouts when Using the NSC68-5050 Cable60Appendix C Using the SCB-68 Shielded Connector Block61Figure C-1. General-Purpose Switch Configuration for the SCB-68 Terminal Block61Appendix D Technical Support and Professional Services62Glossary64Numbers/Symbols64A-B65C-D66E-H67I-M68N-P69R-S70T-W71文件大小： 789.4 KB页数： 71Language: English打开用户手册
