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SCXI-1120
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Configuration and Installation
Chapter 2
SCXI-1120 User Manual
2-2
© National Instruments Corporation
Figure 2-1. SCXI-1120 General Parts Locator Diagram
Contents
Main
Page
Limited Warranty
Copyright
Trademarks
Warning Regarding Medical and Clinical Use of National Instruments Products
Contents
About This Manual
Chapter 1 Introduction
Chapter 2 Configuration and Installation
Chapter 3 Theory of Operation
Chapter 4 Register Descriptions
Chapter 5 Programming
Appendix A Specifications
Appendix B Rear Signal Connector
Appendix C SCXIbus Connector
Appendix D SCXI-1120 Front Connector
Page
Figures
Tables
About This Manual
Organization of This Manual
Conventions Used in This Manual
Related Documentation
Customer Communication
Chapter 1 Introduction
What Your Kit Should Contain
Optional Software
Optional Equipment
Custom Cables
Unpacking
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Page
Page
Digital Signal Connections
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Analog Configuration
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Hardware Installation
Signal Connections
Configuration and Installation Chapter 2
SCXI-1120 User Manual 2-12 National Instruments Corporation
Front Connector
Figure 2-3 shows the pin assignments for the SCXI-1120 front connector.
Figure 2-3. SCXI-1120 Front Connector Pin Assignment
Front Connector Signal Descriptions
Figure 2-4. Ground-Referenced Signal Connection with High Common-Mode Voltage
Figure 2-6. Floating AC-Coupled Signal Connection
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Rear Signal Connector
Figure 2-11. SCXI-1120 Rear Signal Connector Pin Assignment
Rear Signal Connector Signal Descriptions
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National Instruments Corporation 3-1 SCXI-1120 User Manual
Chapter 3 Theory of Operation
Figure 3-1. SCXI-1120 Block Diagram
Functional Overview
The block diagram in Figure 3-1 illustrates the key functional components of the SCXI-1120.
SCXIbus Connector
Figure 3-2. SCXIbus Connector Pin Assignment
SCXIbus Connector Signal Descriptions
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Digital Interface
Digital Control Circuitry
Analog and Timing Circuitry
Analog Input Channels
Figure 3-5. Analog Input Block Diagram
Calibration
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Scanning Modes
Single-Module Parallel Scanning
Multiplexed Scanning
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Chapter 4 Register Descriptions
Register Description
Register Description Format
SCXI-1120 Registers
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Slot 0 Register Descriptions
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Chapter 5 Programming
Programming Considerations
Notation
Register Writes
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Single-Channel Measurements
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Scanning Measurements
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Scanning Examples
Example 1
Example 2
Example 3
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Appendix A Specifications
Analog Input
Cold-Junction Sensor
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Physical
Operating Environment
Storage Environment
Appendix B Rear Signal Connector
Figure B-1. SCXI-1120 Rear Signal Connector Pin Assignment
Rear Signal Connector Signal Descriptions
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Figure C-1. SCXIbus Connector Pin Assignment
SCXIbus Connector Signal Descriptions
Page
Appendix D SCXI-1120 Front Connector
Figure D-1. SCXI-1120 Front Connector Pin Assignment
Front Connector Signal Descriptions
Appendix E SCXI-1120 Cabling
SCXI-1340 Cable Assembly
SCXI-1340 Installation
SCXI-1341 Lab-NB, Lab-PC, or Lab-PC+ and SCXI-1344 Lab-LC Cable Assembly
SCXI-1341 and SCXI-1344 Installation
SCXI-1342 PC-LPM-16 Cable Assembly
SCXI-1342 Installation
SCXI-1180 Feedthrough Panel
SCXI-1180 Installation
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SCXI-1302 50-Pin Terminal Block
SCXI-1302 Wiring Procedure
SCXI-1302 Installation
SCXI-1351 One-Slot Cable Extender
SCXI-1351 Installation
SCXI-1350 Multichassis Adapter
SCXI-1350 Installation
SCXI-1343 Rear Screw Terminal Adapter
SCXI-1343 Installation
Table E-4. SCXI-1343 Pin Connections
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Appendix G Customer Communication
Technical Support Form
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SCXI-1120 Hardware Configuration Form
Documentation Comment Form
Glossary
Numbers/Symbols
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Index
Numbers/Symbols
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