National Instruments NI 7831R Manuel d'utilisateur Page 5
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© National Instruments Corporation v NI 7831R User Manual
Contents
About This Manual
Conventions ...................................................................................................................vii
Reconfigurable I/O Documentation...............................................................................viii
Related Documentation..................................................................................................ix
Chapter 1
Introduction
About the NI 7831R.......................................................................................................1-1
Using PXI with CompactPCI.........................................................................................1-2
Overview of Reconfigurable I/O ...................................................................................1-3
Reconfigurable I/O Concept............................................................................1-3
Flexible Functionality .......................................................................1-3
User-Defined I/O Resources .............................................................1-4
Device-Embedded Logic and Processing .........................................1-4
Reconfigurable I/O Architecture .....................................................................1-4
Reconfigurable I/O Applications.....................................................................1-5
Software Development ..................................................................................................1-5
LabVIEW FPGA Module................................................................................1-5
LabVIEW Real-Time Module.........................................................................1-6
Cables and Optional Equipment ....................................................................................1-7
Custom Cabling .............................................................................................................1-8
Safety Information .........................................................................................................1-9
Chapter 2
Hardware Overview of the NI 7831R
Analog Input ..................................................................................................................2-3
Input Modes.....................................................................................................2-4
Input Range .....................................................................................................2-4
Connecting Analog Input Signals ..................................................................................2-5
Types of Signal Sources ................................................................................................2-7
Floating Signal Sources...................................................................................2-7
Ground-Referenced Signal Sources ................................................................2-7
Input Modes ...................................................................................................................2-7
Differential Connection Considerations (DIFF Input Mode)..........................2-9
Differential Connections for Ground-Referenced Signal Sources....2-9
Differential Connections for Nonreferenced
or Floating Signal Sources .............................................................2-10
- Reconfigurable I/O 1
- Important Information 3
- Compliance 4
- Contents 5
- About This Manual 7
- Related Documentation 9
- Introduction 10
- Using PXI with CompactPCI 11
- Reconfigurable I/O Concept 12
- Flexible Functionality 12
- User-Defined I/O Resources 13
- Software Development 14
- LabVIEW Real-Time Module 15
- Cables and Optional Equipment 16
- Custom Cabling 17
- Safety Information 18
- Hardware Overview 20
- Analog Input 22
- Input Modes 23
- Input Range 23
- Types of Signal Sources 26
- Signal Sources 28
- Floating Signal Sources 29
- Resistors 30
- (see text) 30
- Sources (RSE Input Mode) 32
- Sources (NRSE Input Mode) 32
- Analog Output 34
- Digital I/O 35
- RTSI Trigger Bus 38
- Switch Settings 40
- Power Connections 41
- Field Wiring Considerations 42
- Calibration 43
- External Calibration 44
- Specifications 45
- Accuracy Information 46
- DC Transfer Characteristics 46
- Dynamic Characteristics 46
- Settling Time 47
- Output Characteristics 47
- Voltage Output 48
- Reconfigurable FPGA 49
- Bus Interface 50
- Power Requirement 50
- Physical 51
- Maximum Working Voltage 51
- Environmental 51
- Operating Environment 51
- Storage Environment 52
- Electromagnetic Compatibility 53
- CE Compliance 53
- Connecting I/O Signals 54
- DIO 0–23 Connector 60
- Pin Assignment 60
- DIO 24–39 Connector 60
- Using the SCB-68 61
- Shielded Connector Block 61
- Technical Support and 62
- Professional Services 62
- Glossary 64
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