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Important Information
Warranty
Copyright
Trademarks
Patents
Conventions
Contents
Chapter 1 About the SCXI-1125
Chapter 2 Connecting Signals
Chapter 3 Configuring and Testing
Chapter 4 Theory of Operation
Chapter 5 Using the SCXI-1125
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Tables
About the SCXI-1125
What You Need to Get Started
National Instruments Documentation
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Installing Application Software, NI-DAQ, and the DAQ Device
Connecting the SCXI-1125 to a n E/M Series DAQ Device for Parallel Scanning
Verifying the SCXI-1125 Installation in Software
Installing SCXI Using NI-DAQmx in Software
Manually Adding Modules in NI-DAQmx
Installing SCXI Using Traditional NI-DAQ (Legacy) in Software
Manually Adding Modules in Traditional NI-DAQ (Legacy)
Verifying and Self-Testing the Installation
Troubleshooting the Self-Test Verification
Troubleshooting in NI-DAQmx
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Connecting Signals
AC and DC Voltage Connections
Ground-Referenced Signal
Floating Signal
AC-Coupling
Pin Assignments
Table 2-1. Front Signal Pin Assignments
Temperature Sensor Connection
Rear Signal Connector
Table 2-2. Rear Signal Pin Assignments
Configuring and Testing
SCXI-1125 Software-Configurable Settings
Common Software-Configurable Settings
Filter Bandwidth
Gain/Input Range
Configurable Settings in MAX
NI-DAQmx
Creating a Voltage Global Channel or Task
Traditional NI-DAQ (Legacy)
Configuring Module Property Pages in Traditional NI-DAQ (Legacy)
Creating a Virtual Channel
Verifying the Signal
Verifying the Signal in NI-DAQmx Using a Task or Global Channel
Verifying the Signal in Traditional NI-DAQ (Legacy)
Verifying the Signal Using Channel Strings
Verifying the Signal Using Virtual Channel
Theory of Operation
Figure 4-1. SCXI-1125 Block Diagram
Gain
Filter Bandwidth and Cutoff Frequency
Operating in Multiplexed Mode
Multiplexed Hardware Operation Theory
Operating in Parallel Mode
Theory of Parallel Hardware Operation
Using the SCXI-1125
Temperature Measurements Using Thermocouples
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Making High-Voltage Measurements
Developing Your Application in NI-DAQmx
Typical Program Flowchart
Figure 5-1. Typical Program Flowchart
General Discussion of Typical Flowchart
Creating a Task Using DAQ Assistant or Programmatically
Adjusting Timing and Triggering
Configuring Channel Properties
Acquiring, Analyzing, and Presenting
Completing the Application
Developing an Application Using LabVIEW
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Using a DAQmx Channel Property Node in LabVIEW
Specifying Channel Strings in NI-DAQmx
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Text Based ADEs
LabWindows/CVI
Measurement Studio (Visual Basic, .NET, and C#)
Programmable NI-DAQmx Properties
Developing Your Application in Traditional NI-DAQ (Legacy)
Traditional NI-DAQ (Legacy) in LabVIEW
Typical Program Flow
Figure 5-3. Typical SCXI-1125 Program Flow with Traditional NI-DAQ (Legacy)
Configure the SCXI-1125 Settings Using Traditional NI-DAQ (Legacy) in LabVIEW
Configure, Start Acquisition, and Take Readings Using Traditional NI-DAQ (Legacy) in LabVIEW
Convert Scaling Using Traditional NI-DAQ (Legacy) in LabVIEW
Analyze and Display Using Traditional NI-DAQ (Legacy) in LabVIEW
Traditional NI-DAQ (Legacy) in Text-Based ADEs
Configuring System Settings Using Traditional NI-DAQ (Legacy) C API
Configure Module Settings Using Traditional NI-DAQ (Legacy) C API
Perform Offset Null Compensation Using Traditional NI-DAQ (Legacy) C API
Perform Acquisition Using Traditional NI-DAQ (Legacy) C API
Perform Scaling, Analysis, and Display
Using Software for Multiplexed Scanning
LabVIEW and the SCXI Channel String
LabVIEW and the Virtual Channel String
Performing a Multiplexed Scan
C and Low-Level DAQ Functions
Using Software for Parallel Scanning
LabVIEW and Parallel Mode
C and Parallel Mode
Other Application Documentation and Material
Traditional NI-DAQ (Legacy) CVI Examples
Traditional NI-DAQ (Legacy) Measurement Studio Examples
Calibration
Calibration Procedures
One-Point Offset Calibration
Two-Point Gain and Offset Calibration
A
Specifications
Input Characteristics
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Absolute Accuracy
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Analog Inputs
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Physical
Figure A-1. SCXI-1125 Dimensions
Weight....................................................641 g (22.6 oz)
Maximum Working Voltage
Environmental
Safety
Electromagnetic Compatibility
CE Compliance
Environmental Management
Waste Electrical and Electronic Equipment (WEEE)
RoHS
B
Using SCXI Channel Strings with Traditional NI-DAQ (Legacy) 7.0 or Later
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C
Removing the SCXI-1125
Removing the SCXI-1125 from MAX
Removing the SCXI-1125 from a Chassis
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D
Common Questions
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Glossary
Numbers/Symbol
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B
C
D
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P
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Index
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