About this manual, Organization of this manual – National Instruments SCXI-1120 User Manual
Page 10
© National Instruments Corporation
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SCXI-1120 User Manual
About This Manual
This manual describes the electrical and mechanical aspects of the SCXI-1120 and contains
information concerning its operation and programming. The SCXI-1120 is a class I module that
operates as eight isolated input channels. Refer to your chassis manual for a description of the
different module classes. Each channel is isolated and independently configurable via jumpers.
Refer to your chassis manual for a description of the different module classes. The SCXI-1120 is
a member of the National Instruments Signal Conditioning eXtensions for Instrumentation
(SCXI) Series for the National Instruments data acquisition plug-in boards. This board is
designed for low-cost signal conditioning of thermocouples, volt sources, millivolt sources, and
4 to 20 mA sources or 0 to 20 mA process-current sources where high common-mode voltages
exist.
This manual describes the installation, theory of operation, and basic programming
considerations for the SCXI-1120.
Organization of This Manual
The SCXI-1120 User Manual is organized as follows:
•
Chapter 1, Introduction, describes the SCXI-1120; lists the contents of your SCXI-1120 kit;
describes the optional software, optional equipment, and custom cables; and explains how to
unpack the SCXI-1120 kit.
•
Chapter 2, Configuration and Installation, describes the SCXI-1120 jumper configurations,
installation of the SCXI-1120 into the SCXI chassis, signal connections to the SCXI-1120,
and cable wiring.
•
Chapter 3, Theory of Operation, contains a functional overview of the SCXI-1120 module
and explains the operation of each functional unit making up the SCXI-1120.
•
Chapter 4, Register Descriptions, describes in detail the SCXI-1120 Module ID Register, the
Configuration Register, the Slot 0 registers, and multiplexer addressing.
•
Chapter 5, Programming, contains a functional programming description of the SCXI-1120
and Slot 0.
•
Appendix A, Specifications, lists the specifications for the SCXI-1120.
•
Appendix B, Rear Signal Connector, describes the pinout and signal names for the
SCXI-1120 50-pin rear signal connector, including a description of each connection.
•
Appendix C, SCXIbus Connector, describes the pinout and signal names for the SCXI-1120
96-pin SCXIbus connector, including a description of each connection.