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SCXI-1581
National Instruments SCXI-1581 Module Manuals
Manuals and User Guides for National Instruments SCXI-1581 Module. We have
4
National Instruments SCXI-1581 Module manuals available for free PDF download: User Manual, Quick Start Manual
National Instruments SCXI-1581 User Manual (72 pages)
Brand:
National Instruments
| Category:
Control Unit
| Size: 0.48 MB
Table of Contents
Table of Contents
5
Chapter 1 Installing and Configuring the SCXI-1581
9
About the SCXI-1581
9
What You Need to Get Started
9
Installing the Software
10
Installing the SCXI-1581
10
Unpacking
10
Installing the SCXI-1581 Module into the SCXI Chassis
11
Connecting the SCXI-1581 to an E Series DAQ Device for Multiplexed Scanning in an SCXI Chassis
12
Figure 1-1. Installing the SCXI-1581 Module
12
Connecting the SCXI-1581 to an E Series DAQ Device for Multiplexed Scanning in a PXI Combination Chassis
14
Figure 1-2. Connecting an SCXI Chassis to an E Series DAQ Device
14
Configuring and Self-Testing
15
Configuring SCXI Using Traditional NI-DAQ
15
Manually Adding and Configuring Modules in Traditional NI-DAQ
17
Verifying and Self-Testing the Configuration
17
Configuring SCXI Using NI-Daqmx
18
Manually Adding and Configuring Modules in NI-Daqmx
19
Verifying and Self-Testing the Configuration
19
Troubleshooting the Self-Test Verification
20
Removing the SCXI-1581
21
Removing the SCXI-1581 from Measurement & Automation Explorer
21
Removing the SCXI-1581 from an SCXI Chassis
22
Removing the SCXI-1581 from Measurement & Automation Explorer
23
Figure 1-3. Removing the SCXI-1581
23
Chapter 2 Using the SCXI-1581
25
Operation of the Current Sources
25
Signal Connections
25
Table 2-1. Front Signal Pin Assignments
26
Table 2-2. Signal Descriptions
27
Scanning Other SCXI Modules through the SCXI-1581
28
Figure 2-1. Rear Signal Connector Pin Assignments
28
Theory of Multiplexed Hardware Operation
29
Appendix A Specifications
32
Appendix B Measuring Temperature with Resistive Transducers
35
Rtds
35
The Relationship between Resistance and Temperature in Rtds
36
Table B-1. Callendar-Van Dusen Coefficients
38
RTD Measurement Errors
40
Figure B-2. 2-Wire RTD Measurement
40
Thermistors
41
Resistance/Temperature Characteristic of Thermistors
43
Thermistor Measurement Circuits
44
Figure B-4. Thermistor Measurement with Constant Current Excitation, IEX
44
Connecting Resistive Devices to the SCXI-1581
45
4-Wire Configuration
46
Figure B-5. 4-Wire Resistive Sensor Connected in a 4-Wire Configuration
46
2-Wire Configuration
47
Figure B-6. 2-Wire Resistive Sensor Connected in a 2-Wire Configuration
47
3-Wire Resistive Sensor Connected in a 2-Wire Configuration
48
Figure B-7. 3-Wire Resistive Sensor Connected in a 2-Wire Configuration
48
Lead-Resistance Compensation Using a 3-Wire Resistive Sensor and Two Matched Current Sources
49
Figure B-8. 3-Wire Configuration Using Matched Current Sources
49
Lead-Resistance Compensation Using a 3-Wire Resistive Sensor and Two Differential Amplifiers
50
Figure B-9. 3-Wire Configuration Using Two Differential Amplifiers
51
Appendix C Common Questions
53
Table C-1. SCXI-1581 Digital Signals
55
Glossary
59
Index
69
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National Instruments SCXI-1581 User Manual (55 pages)
Brand:
National Instruments
| Category:
Control Unit
| Size: 0.63 MB
Table of Contents
Table of Contents
5
Chapter 1 About the SCXI-1581
8
What You Need to Get Started
8
National Instruments Documentation
9
Installing Application Software, NI-DAQ, and the E/M Series DAQ Device
10
Installing the SCXI-1581 Module into the SCXI Chassis
11
Verifying the SCXI-1581 Installation
11
Configuring the SCXI System Software
11
Figure 1-1. SCXI-1581 to DMM Connections
11
Calibrating the SCXI-1581
12
Chapter 2 Connecting Signals
13
Pin Assignments
13
Table 2-1. Front Signal Pin Assignments
14
Table 2-2. Signal Descriptions
15
Table 2-3. Rear Signal Pin Assignments
16
Table 2-4. SCXI-1581 Communication Signals
17
Chapter 3 Theory of Operation
19
Figure 3-1. Block Diagram of SCXI-1581
19
Scanning Other SCXI Modules through the SCXI-1581
20
Chapter 4 Using the SCXI-1581
21
Operation of the Current Sources
21
Connecting Resistive Devices to the SCXI-1581
21
4-Wire Configuration
22
Figure 4-1. 4-Wire Resistive Sensor Connected in a 4-Wire Configuration
22
2-Wire Configuration
23
Figure 4-2. 2-Wire Resistive Sensor Connected in a 2-Wire Configuration
23
3-Wire Resistive Sensor Connected in a 2-Wire Configuration
24
Figure 4-3. 3-Wire Resistive Sensor Connected in a 2-Wire Configuration
24
Figure 4-4. 3-Wire Configuration Using Matched Current Sources
25
Lead-Resistance Compensation Using a 3-Wire Resistive Sensor and Two Matched Current Sources
25
Figure 4-5. 3-Wire Configuration Using Two Differential Amplifiers
26
Lead-Resistance Compensation Using a 3-Wire Resistive Sensor and Two Differential Amplifiers
26
Configuring Sensors in Software
27
Creating an RTD Virtual Channel Using NI-Daqmx
27
Creating a Thermistor Virtual Channel Using NI-Daqmx
28
Measuring Temperature with Resistive Transducers
29
RTD Measurement Errors
29
Rtds
29
Figure 4-6. 2-Wire RTD Measurement
30
The Relationship between Resistance and Temperature in Rtds
30
Table 4-1. Platinum RTD Types
32
Thermistors
33
Figure 4-9. Thermistor Measurement with Constant Current Excitation
35
Thermistor Measurement Circuits
35
Resistance/Temperature Characteristic of Thermistors
36
Appendix A Specifications
38
Figure A-1. SCXI-1581 Dimensions
38
Appendix B Removing the SCXI-1581
40
Removing the SCXI-1581
40
Appendix C Common Questions
43
Table C-1. SCXI-1581 Digital Signals
44
National Instruments SCXI-1581 Quick Start Manual (61 pages)
Signal Conditioning eXtensions for Instrumentation
Brand:
National Instruments
| Category:
Control Unit
| Size: 4.17 MB
Table of Contents
PXI/SCXI Combination Chassis
3
Step 4. Install the Modules
4
SCXI USB Modules
5
Single-Chassis System
7
Multichassis System
8
Windows Device Recognition
10
Identify the PXI Controller
11
Use Your Task in an Application
15
Troubleshooting
16
Frequently Asked Questions
16
Worldwide Technical Support
18
Specifications
18
Environmental Management
19
Waste Electrical and Electronic Equipment (WEEE)
19
Dépannage
35
Questions Fréquemment Posées
36
Spécifications
38
Compatibilité Électromagnétique
38
SCXI-Chassis
42
Fehlersuche
56
Häufig Gestellte Fragen
57
Elektromagnetische Verträglichkeit
59
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National Instruments SCXI-1581 Quick Start Manual (25 pages)
Signal Conditioning eXtensions for Instrumentation
Brand:
National Instruments
| Category:
Test Equipment
| Size: 2.34 MB
Table of Contents
Step 4. Install the Modules
6
Windows Device Recognition
12
Troubleshooting
19
Frequently Asked Questions
20
Worldwide Technical Support
21
Specifications
22
Electromagnetic Compatibility
22
Online Product Certification
22
Environmental Management
23
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