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Module SCXI-1503
National Instruments Module SCXI-1503 Manuals
Manuals and User Guides for National Instruments Module SCXI-1503. We have
2
National Instruments Module SCXI-1503 manuals available for free PDF download: User Manual, Calibration Procedure
National Instruments Module SCXI-1503 User Manual (79 pages)
National Instruments Module User's Manual
Brand:
National Instruments
| Category:
Network Card
| Size: 1.09 MB
Table of Contents
Important Information
3
Table of Contents
5
Chapter 1 About the SCXI-1503
9
What You Need to Get Started
9
National Instruments Documentation
10
Installing Application Software, NI-DAQ, and the E/M Series DAQ Device
12
Installing the SCXI-1503 Module into the SCXI Chassis
12
Installing the Terminal Block
12
Configuring the SCXI System Software
12
Table 1-1. Supported SCXI-1503 Terminal Blocks
12
Verifying the SCXI-1503 Installation
13
Chapter 2 Connecting Signals
14
Analog Input Signal Connections
14
Ground-Referencing the Signals
15
Connecting Resistive Devices to the SCXI-1503
15
4-Wire Configuration
16
Appendix A
16
Appendix B
16
Appendix C
16
Figure 2-1. 4-Wire Resistive Sensor Connected in a 4-Wire Configuration
16
2-Wire Configuration
17
Figure 2-2. 2-Wire Resistive Sensor Connected in a 2-Wire Configuration
17
3-Wire Resistive Sensor Configuration
18
Figure 2-3. 3-Wire Resistive Sensor Configuration
18
Figure 2-4. 3-Wire Configuration Using Matched Current Sources
19
Lead-Resistance Compensation Using a 3-Wire Resistive Sensor and Two Matched Current Sources
19
Front Connector
20
Table 2-1. Front Signal Pin Assignments
21
Table 2-2. Signal Descriptions
22
Rear Signal Connector
23
Table 2-3. Rear Signal Pin Assignments
23
Rear Signal Connector Descriptions
24
Table 2-4. SCXI-1503 50-Pin Rear Connector Signals
24
Chapter 3 Configuring and Testing
26
SCXI-1503 Software-Configurable Settings
26
Common Software-Configurable Settings
26
Gain/Input Range
26
Auto-Zero
27
CJC Source/Value
27
Input Coupling
27
Configurable Settings in MAX
27
NI-Daqmx
28
Creating a Global Channel or Task
28
Verifying the Signal
29
Verifying the Signal in NI-Daqmx Using a Task or Global Channel
29
Chapter 4 Theory of Operation
31
Figure
31
Figure 4-1. Block Diagram of SCXI-1503
32
Analog Circuitry
33
Analog Input Channels
33
Digital Control Circuitry
33
Rear Signal Connector, Scxibus Connector, and Scxibus Interface
33
Operation of the Current Sources
34
Theory of Multiplexed Operation
34
Measuring Temperature with Resistive Transducers
35
Figure
35
Rtds
35
Figure 4-2. 2-Wire RTD Measurement
36
RTD Measurement Errors
36
The Relationship between Resistance and Temperature in Rtds
36
Resistance-Temperature Curve for a
37
Table 4-1. Platinum RTD Types
38
Thermistors
40
Figure 4-5. Thermistor Measurement with Constant Current Excitation
41
Thermistor Measurement Circuits
41
Resistance/Temperature Characteristic of Thermistors
42
Using the SCXI-1503
44
Developing Your Application in NI-Daqmx
44
Typical Program Flowchart
44
Figure
44
Figure 5-1. Typical Program Flowchart for Voltage Measurement Channels
45
General Discussion of Typical Flowchart
46
Adjusting Timing and Triggering
46
Creating a Task Using DAQ Assistant or Programmatically
46
Configuring Channel Properties
47
Table 5-1. NI-Daqmx Voltage Measurement Properties
47
Table 5-2. NI-Daqmx RTD Measurement Properties
48
Table 5-3. NI-Daqmx Thermistor Measurement Properties
49
Acquiring, Analyzing, and Presenting
50
Table 5-4. NI-Daqmx Thermocouple Measurement Properties
50
Completing the Application
51
Developing an Application Using Labview
51
Table 5-5. Programming a Task in Labview
51
Using a NI-Daqmx Channel Property Node in Labview
53
Specifying Channel Strings in NI-Daqmx
54
Text Based Ades
54
Programmable NI-Daqmx Properties
56
Calibration
56
Internal/Self-Calibration
56
External Calibration
56
Chapter 5 Using the
57
Analog Input
58
Table A-1. RTD Measurement Accuracy
59
SCXI-1503 Dimensions
62
Electromagnetic Compatibility
63
Removing the SCXI-1503
64
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National Instruments Module SCXI-1503 Calibration Procedure (15 pages)
16-Channel RTD Module
Brand:
National Instruments
| Category:
Control Unit
| Size: 1.17 MB
Table of Contents
Table of Contents
1
Software Requirements
1
Documentation Requirements
2
Calibration Interval
2
Test Equipment
3
Test Conditions
3
Calibration Procedures
4
Initial Setup
5
Self-Calibration
8
Max
8
Verification
8
Verifying the Analog Input
8
Verifying the Excitation Current
11
Adjustment
11
Adjusting the Analog Input
12
Adjusting the Excitation Current
14
Where to Go for Support
15
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