Table of Contents
SCXI-1161 User Manual vi
©
National Instruments Corporation
Chapter 3
Signal Connections
Screw Terminal Connections ....................................................................................... 3-1
Contact Protection for Inductive Load Connections .................................................... 3-1
Signal Connection.......................................................................................... 3-4
Rear Signal Connector.................................................................................................. 3-4
Rear Signal Connector Signal Descriptions ................................................................. 3-6
Digital I/O Signal Connections...................................................................... 3-7
Chapter 4
Theory of Operation
Functional Overview .................................................................................................... 4-1
Digital Interface............................................................................................................ 4-3
Digital Control Circuitry .............................................................................................. 4-4
Relay Channels............................................................................................................. 4-5
Appendix A
Specifications
Appendix B
Contact Protection
Appendix C
Customer Communication
Glossary
Index
Figures
Figure 1-1. The Relationship between the Programming Environment,
NI-DAQ, and Your Hardware............................................................... 1-4
Figure 2-1. SCXI-1161 General Parts Locator Diagram ......................................... 2-2
Figure 3-1. Contact Protection Using a Flyback Diode for DC Inductive Loads ... 3-2
Figure 3-2. Arc Suppressor Pad Locations .............................................................. 3-3
