Document Outline

• SCXI-1127/1128 User Manual
• Support
  • Worldwide Technical Support and Product Information
  • National Instruments Corporate Headquarters
  • Worldwide Offices
• Important Information
  • Warranty
  • Copyright
  • Trademarks
  • WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS
• Contents
• Chapter 1 Installing and Configuring the SCXI-1127/1128
  • Installing the Software
  • Installing the Hardware
    • Installing the SCXI-1127/1128 Module into the SCXI Chassis
    • Connecting the SCXI-1127/1128 to the DMM in a Single-Chassis System
      • Single 4-Slot Chassis Configuration
      • Single 12-Slot Chassis Configuration
    • Connecting the SCXI-1127/1128 to the DMM in a Multichassis System
      • 4-Slot and 4-Slot Multichassis Configuration
      • 4-Slot and 12-Slot Multichassis Configuration
      • 12-Slot and 12-Slot Multichassis Configuration
    • Connecting the SCXI-1127/1128 to the DMM in a PXI-1010 Chassis
      • DMM in PXI Slots 1 through 7 Configuration
      • DMM in PXI Slot 8 Configuration
    • Connecting the SCXI-1127/1128 to the DMM in the PXI-1011 Chassis
      • DMM in PXI Slots 1 through 3 Configuration
      • DMM in PXI Slot 4 Configuration
    • Accessing the SCXI-1127/1128 through Other SCXI Modules Using a DAQ Device
    • Using a DAQ Device on a PXI-1010 Chassis
    • Using a DAQ Device on a PXI-1011 Chassis
    • Connecting the SCXI-1127/1128 to an External DMM
  • Configuring and Self-Test
    • Auto-Detecting Modules
    • Manually Adding Modules
  • Safety Information
• Chapter 2 Using the SCXI-1127/1128
  • Operating as a Multiplexer/Scanner
    • 2-Wire Channel Scanning Configuration
    • 1-Wire Channel Scanning Configuration
    • 4-Wire Channel Scanning Configuration
    • 4-Wire versus 2-Wire Resistance Measurement
    • Mixed Mode Configuration
    • Hardware-Timed and Software Scanning
      • Hardware-Timed Scanning
      • Software Scanning
    • Making Temperature Measurements
      • Making Thermocouple Measurements
      • Making RTD Measurements
      • Making Thermistor Measurements
  • Operating as a Matrix
    • 32 x 1 Matrix Configuration
    • 4 x 8 Matrix Configuration
    • Matrix Expansion
  • Independent Mode
• Appendix A Specifications
• Appendix B Accessories
• Appendix C Customizing Your Module
• Appendix D SCXI-1127/1128 Front Connector
• Appendix E Common Questions
• Appendix F Technical Support Resources
• Glossary
  • Symbols
  • A-B
  • C-E
  • H-P
  • R-S
  • T-V
  • W
• Index
  • Numbers
  • A-C
  • D-I
  • M
  • N-S
  • T-W
• Figures
  • Figure 1-1. Installing the SCXI-1127/1128 into an SCXI Chassis
  • Figure 1-2. 4-Slot Single-Chassis Installation
  • Figure 1-3. 4-Slot Configuration Parts Locator Diagram
  • Figure 1-4. 12-Slot Single-Chassis Installation
  • Figure 1-5. 12-Slot Configuration Parts Locator Diagram
  • Figure 1-6. 4-Slot to 4-Slot Multichassis Configuration Parts Locator Diagram
  • Figure 1-7. 4-Slot to 12-Slot Multichassis Configuration Parts Locator Diagram
  • Figure 1-8. 12-Slot to 12-Slot Multichassis Configuration Parts Locator Diagram
  • Figure 1-9. Installing the SCXI-1127/1128 with Two DAQ Devices
  • Figure 2-1. SCXI-1331 Signal Connections
  • Figure 2-2. 2-Wire Block Diagram
  • Figure 2-3. 2-Wire Wiring Diagram
  • Figure 2-4. 1-Wire Block Diagram
  • Figure 2-5. 1-Wire Wiring Diagram
  • Figure 2-6. 4-Wire Block Diagram
  • Figure 2-7. 4-Wire Wiring Diagram
  • Figure 2-8. Signal Connections for a 2-Wire Resistance Measurement
  • Figure 2-9. Signal Connections for a 4-Wire Resistance Measurement
  • Figure 2-10. Mixed Mode Scanning with an SCXI-1331
  • Figure 2-11. Hardware Scanning Flowchart
  • Figure 2-12. Cabling a DMM and Using the TRIG0 to Bus the VMC/EXT_TRIG_IN to Non-Cabled Modules
  • Figure 2-13. Cabling an External DMM
  • Figure 2-14. Daisy-Chained for Handshaking
  • Figure 2-15. Connecting an External DMM to an SCXI-1127/1128 in an SCXI-2000 Series Chassis
  • Figure 2-16. Temperature Measurement Wiring Diagram
  • Figure 2-17. 2 x 4, 1-Wire Matrix Configuration
  • Figure 2-18. 1 x 32 Matrix Wiring Diagram
  • Figure 2-19. SCXI-1332 Terminal Block
  • Figure 2-20. SCXI-1332 Connected to an SCXI-1127
  • Figure 2-21. SCXI-1332 Connected to an SCXI-1127/1128 Schematic
  • Figure 2-22. 8 x 8 Matrix Parts Locator Diagram
  • Figure 2-23. 8 x 8 Matrix Schematic
  • Figure 2-24. 8 x 16 Matrix Parts Locator Diagram
  • Figure 2-25. 8 x 16 Matrix Schematic
  • Figure 2-26. SCXI-1127/1128 Relay Configuration
  • Figure C-1. Removing the SCXI Module Cover
  • Figure C-2. Bent and Trimmed Resistor
  • Figure D-1. SCXI-1127/1128 Front Connector Pin Assignments for 2-Wire Mode
  • Figure D-2. SCXI-1127/1128 Front Connector Pin Assignments for 1-Wire Mode
  • Figure D-3. SCXI-1127/1128 Front Connector Pin Assignments for 4-Wire Mode
  • Figure D-4. SCXI-1127/1128 Front Connector Pin Assignments to Create an 4 x 8 Matrix
• Tables
  • Table 1-1. SCXI-1127/1128 Configurations
  • Table D-1. Front Connector Signal Description