Benutzerhandbuch für National Instruments 1128

Inhaltsverzeichnis

• SCXI-1127/1128 User Manual

  1
• Support

  2
  • Worldwide Technical Support and Product Information

    2
  • National Instruments Corporate Headquarters

    2
  • Worldwide Offices

    2
• Important Information

  3
  • Warranty

    3
  • Copyright

    3
  • Trademarks

    3
  • WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS

    3
• Contents

  7
• Chapter 1 Installing and Configuring the SCXI-1127/1128

  11
  • Installing the Software

    12
  • Installing the Hardware

    13
    • Installing the SCXI-1127/1128 Module into the SCXI Chassis

      14
    • Connecting the SCXI-1127/1128 to the DMM in a Single-Chassis System

      15
      • Single 4-Slot Chassis Configuration

        16
      • Single 12-Slot Chassis Configuration

        18
    • Connecting the SCXI-1127/1128 to the DMM in a Multichassis System

      20
      • 4-Slot and 4-Slot Multichassis Configuration

        20
      • 4-Slot and 12-Slot Multichassis Configuration

        22
      • 12-Slot and 12-Slot Multichassis Configuration

        24
    • Connecting the SCXI-1127/1128 to the DMM in a PXI-1010 Chassis

      26
      • DMM in PXI Slots 1 through 7 Configuration

        26
      • DMM in PXI Slot 8 Configuration

        27
    • Connecting the SCXI-1127/1128 to the DMM in the PXI-1011 Chassis

      27
      • DMM in PXI Slots 1 through 3 Configuration

        28
      • DMM in PXI Slot 4 Configuration

        28
    • Accessing the SCXI-1127/1128 through Other SCXI Modules Using a DAQ Device

      28
    • Using a DAQ Device on a PXI-1010 Chassis

      30
    • Using a DAQ Device on a PXI-1011 Chassis

      30
    • Connecting the SCXI-1127/1128 to an External DMM

      30
  • Configuring and Self-Test

    32
    • Auto-Detecting Modules

      32
    • Manually Adding Modules

      33
  • Safety Information

    34
• Chapter 2 Using the SCXI-1127/1128

  36
  • Operating as a Multiplexer/Scanner

    36
    • 2-Wire Channel Scanning Configuration

      38
    • 1-Wire Channel Scanning Configuration

      40
    • 4-Wire Channel Scanning Configuration

      41
    • 4-Wire versus 2-Wire Resistance Measurement

      44
    • Mixed Mode Configuration

      45
    • Hardware-Timed and Software Scanning

      46
      • Hardware-Timed Scanning

        47
      • Software Scanning

        52
    • Making Temperature Measurements

      52
      • Making Thermocouple Measurements

        52
      • Making RTD Measurements

        54
      • Making Thermistor Measurements

        54
  • Operating as a Matrix

    55
    • 32 x 1 Matrix Configuration

      55
    • 4 x 8 Matrix Configuration

      56
    • Matrix Expansion

      59
  • Independent Mode

    64
• Appendix A Specifications

  66
• Appendix B Accessories

  72
• Appendix C Customizing Your Module

  74
• Appendix D SCXI-1127/1128 Front Connector

  76
• Appendix E Common Questions

  82
• Appendix F Technical Support Resources

  85
• Glossary

  87
  • Symbols

    87
  • A-B

    87
  • C-E

    88
  • H-P

    89
  • R-S

    90
  • T-V

    91
  • W

    92
• Index

  93
  • Numbers

    93
  • A-C

    93
  • D-I

    94
  • M

    95
  • N-S

    96
  • T-W

    97
• Figures

  9
  • Figure 1-1. Installing the SCXI-1127/1128 into an SCXI Chassis

    14
  • Figure 1-2. 4-Slot Single-Chassis Installation

    16
  • Figure 1-3. 4-Slot Configuration Parts Locator Diagram

    17
  • Figure 1-4. 12-Slot Single-Chassis Installation

    18
  • Figure 1-5. 12-Slot Configuration Parts Locator Diagram

    19
  • Figure 1-6. 4-Slot to 4-Slot Multichassis Configuration Parts Locator Diagram

    21
  • Figure 1-7. 4-Slot to 12-Slot Multichassis Configuration Parts Locator Diagram

    23
  • Figure 1-8. 12-Slot to 12-Slot Multichassis Configuration Parts Locator Diagram

    25
  • Figure 1-9. Installing the SCXI-1127/1128 with Two DAQ Devices

    29
  • Figure 2-1. SCXI-1331 Signal Connections

    37
  • Figure 2-2. 2-Wire Block Diagram

    38
  • Figure 2-3. 2-Wire Wiring Diagram

    39
  • Figure 2-4. 1-Wire Block Diagram

    40
  • Figure 2-5. 1-Wire Wiring Diagram

    41
  • Figure 2-6. 4-Wire Block Diagram

    42
  • Figure 2-7. 4-Wire Wiring Diagram

    43
  • Figure 2-8. Signal Connections for a 2-Wire Resistance Measurement

    44
  • Figure 2-9. Signal Connections for a 4-Wire Resistance Measurement

    45
  • Figure 2-10. Mixed Mode Scanning with an SCXI-1331

    46
  • Figure 2-11. Hardware Scanning Flowchart

    48
  • Figure 2-12. Cabling a DMM and Using the TRIG0 to Bus the VMC/EXT_TRIG_IN to Non-Cabled Modules

    49
  • Figure 2-13. Cabling an External DMM

    50
  • Figure 2-14. Daisy-Chained for Handshaking

    51
  • Figure 2-15. Connecting an External DMM to an SCXI-1127/1128 in an SCXI-2000 Series Chassis

    51
  • Figure 2-16. Temperature Measurement Wiring Diagram

    53
  • Figure 2-17. 2 x 4, 1-Wire Matrix Configuration

    55
  • Figure 2-18. 1 x 32 Matrix Wiring Diagram

    56
  • Figure 2-19. SCXI-1332 Terminal Block

    57
  • Figure 2-20. SCXI-1332 Connected to an SCXI-1127

    58
  • Figure 2-21. SCXI-1332 Connected to an SCXI-1127/1128 Schematic

    59
  • Figure 2-22. 8 x 8 Matrix Parts Locator Diagram

    60
  • Figure 2-23. 8 x 8 Matrix Schematic

    61
  • Figure 2-24. 8 x 16 Matrix Parts Locator Diagram

    62
  • Figure 2-25. 8 x 16 Matrix Schematic

    63
  • Figure 2-26. SCXI-1127/1128 Relay Configuration

    65
  • Figure C-1. Removing the SCXI Module Cover

    74
  • Figure C-2. Bent and Trimmed Resistor

    75
  • Figure D-1. SCXI-1127/1128 Front Connector Pin Assignments for 2-Wire Mode

    77
  • Figure D-2. SCXI-1127/1128 Front Connector Pin Assignments for 1-Wire Mode

    78
  • Figure D-3. SCXI-1127/1128 Front Connector Pin Assignments for 4-Wire Mode

    79
  • Figure D-4. SCXI-1127/1128 Front Connector Pin Assignments to Create an 4 x 8 Matrix

    80
• Tables

  10
  • Table 1-1. SCXI-1127/1128 Configurations

    11
  • Table D-1. Front Connector Signal Description

    81