Sign In
Upload
Manuals
Brands
National Instruments Manuals
Control Unit
NI PXI-4220
National Instruments NI PXI-4220 Manuals
Manuals and User Guides for National Instruments NI PXI-4220. We have
1
National Instruments NI PXI-4220 manual available for free PDF download: User Manual
National Instruments NI PXI-4220 User Manual (126 pages)
Brand:
National Instruments
| Category:
Control Unit
| Size: 1.47 MB
Table of Contents
Table of Contents
5
Chapter 1 Installing the ni PXI-4220
10
About the ni PXI-4220
10
What You Need to Get Started
11
National Instruments Documentation
11
Software Programs
12
National Instruments ADE Software
12
Ni-Daq
13
Installing the Software
13
Installing the ni PXI-4220 Hardware
13
Unpacking
14
Installing the ni PXI-4220 Device into a PXI Chassis
14
Figure 1-1. Installing the ni PXI-4220 Device
15
Verifying the Installation
16
Figure 1-2. Injector/Ejector Handle Position During Device Insertion
16
Troubleshooting the Self-Test Verification
17
Removing the ni PXI-4220
17
Removing the PXI-4220 from a PXI Chassis
17
Removing the ni PXI-4220 from MAX
18
Figure 1-3. Injector/Ejector Handle Position before Device Removal
18
Chapter 2 Connecting Signals
19
Connecting Bridge Sensor Signals to the ni PXI-4220
19
Figure 2-1. ni PXI-4220 Front Label
20
Figure 2-2. ni PXI-4220 Signal Connector Pin Assignments
21
Figure 2-3. Quarter-Bridge I Circuit Diagram
22
Quarter-Bridge Type I
22
Figure 2-4. Quarter-Bridge II Circuit Diagram
23
Quarter-Bridge Type II
23
Figure 2-5. Half-Bridge Type I Circuit Diagram
24
Half-Bridge Type I
24
Figure 2-6. Half-Bridge Type II Circuit Diagram
25
Half-Bridge Type II
25
Figure 2-7. Full-Bridge Type I Circuit Diagram
26
Full-Bridge Type I
26
Figure 2-8. Full-Bridge Type II Circuit Diagram
27
Full-Bridge Type II
27
Figure 2-9. Full-Bridge Type III Circuit Diagram
28
Full-Bridge Type III
28
Figure 2-10. Remote Sense Circuit Diagram
29
Remote Sense
29
Chapter 3 Configuring and Testing
30
Verifying and Self-Testing Using Device Test Panels
30
NI PXI-4220 Software-Configurable Settings
31
Common Software-Configurable Settings
31
Bridge Configuration and Completion
31
Excitation Level
31
Filter
32
Gain/Input Range
32
Offset Null Compensation Potentiometers
32
Table 3-1. Excitation Voltage for Configuration and Gauge Resistances
32
Shunt Calibration Switches
33
Simultaneous Sample and Hold
33
Configurable Settings in MAX
33
NI-Daqmx
34
Creating a Strain Global Channel or Task
35
Creating a Custom Voltage with Excitation Global Channel or Task
36
Verifying the Signal
37
Verifying the Signal in NI-Daqmx Using a Task or Global Channel
37
Chapter 4 Theory of Operation
39
Strain Gauge Theory
39
Wheatstone Bridges
39
Figure 4-1. Basic Wheatstone Bridge Circuit Diagram
39
Strain Gauges
40
Acronyms, Formulas, and Variable Definitions
40
Table 4-1. Strain-Gauge Configurations
40
Software Scaling and Equations
42
Quarter-Bridge Type I
42
Figure 4-2. Quarter-Bridge Type I Measuring Axial and Bending Strain
42
Figure 4-3. Quarter-Bridge I Circuit Diagram
43
Quarter-Bridge Type II
44
Figure 4-4. Quarter-Bridge Type II Measuring Axial and Bending Strain
44
Figure 4-5. Quarter-Bridge II Circuit Diagram
45
Half-Bridge Type I
47
Figure 4-6. Half-Bridge Type I Measuring Axial and Bending Strain
47
Figure 4-7. Half-Bridge Type I Circuit Diagram
47
Half-Bridge Type II
49
Figure 4-8. Half-Bridge Type II Rejecting Axial and Measuring Bending Strain
49
Figure 4-9. Half-Bridge Type II Circuit Diagram
49
Full-Bridge Type I
51
Figure 4-10. Full-Bridge Type I Rejecting Axial and Measuring Bending Strain
51
Figure 4-11. Full-Bridge Type I Circuit Diagram
51
Full-Bridge Type II
53
Figure 4-12. Full-Bridge Type II Rejecting Axial and Measuring Bending Strain
53
Figure 4-13. Full-Bridge Type II Circuit Diagram
53
Full-Bridge Type III
55
Figure 4-14. Full-Bridge Type III Measuring Axial and Rejecting Bending Strain
55
Figure 4-15. Full-Bridge Type III Circuit Diagram
55
NI PXI-4220 Theory of Operation
57
Figure 4-16. Block Diagram of the ni PXI-4220
58
Bridge Configuration and Completion
60
Excitation
60
Remote Sense
61
Gain/Input Range
63
Filter
64
Offset Null Compensation
65
Table 4-2. Control Codes for Coarse and Fine Null Potentiometers
65
Shunt Calibration
66
Simultaneous Sample and Hold
67
Figure 4-17. Signal During Simultaneous Sample and Hold Sampling
68
Maximum Acquisition Rate
69
Measurement Considerations
69
Differential Signals
69
Common-Mode Rejection Ratio
69
Effective CMR
70
Timing and Control Functional Overview
70
Programmable Function Inputs
71
Device and PXI Clocks
72
Figure 4-19. ni PXI-4220 PXI Trigger Bus Signal Connection
73
Table 4-4. PXI Trigger Bus Timing Signals
73
Chapter 5 Developing Your Application
75
Developing Your Application in NI-Daqmx
75
Typical Program Flow
75
Figure 5-1. Typical Program Flowchart
76
General Discussion of Typical Flow Chart
77
Creating a Task Using DAQ Assistant or Programmatically
77
Adjusting Timing and Triggering
78
Configuring Channel Properties
78
Table 5-1. NI-Daqmx Properties
78
Perform Offset Null Compensation
80
Perform Shunt Calibration
81
Acquiring, Analyzing, and Presenting
81
Completing the Application
82
Developing an Application Using Labview
82
Table 5-2. Programming a Task in Labview
82
Using a Daqmx Channel Property Node in Labview
84
Synchronization and Triggering
85
Figure 5-2. Labview Channel Property Node with Filtering
85
Synchronizing the ni PXI-4220
86
Figure 5-3. General Synchronizing Flowchart
87
Synchronizing the ni PXI-4220 Using Labview
88
Table 5-3. Synchronizing the ni PXI-4220 Using Labview
88
Other Application Documentation and Material
89
Calibrating the ni PXI-4220
90
Internal Calibration Procedure
90
External Device Calibration
91
Calibrating the System
91
Offset Null Compensation
91
Shunt Calibration
91
Table 4-3. Maximum Sampling Rates
92
Appendix A Specifications
93
Typical Posttriggered Sequence
102
Typical Pretriggered Sequence
102
AI START TRIG Input Signal Timing
103
AI REF TRIG Input Signal Timing
104
AI SAMP CLK Input Signal Timing
106
AI CONV CLK Input Signal Timing
107
Advertisement
Advertisement
Related Products
National Instruments PXI-8214
National Instruments NI PXI-6682
National Instruments NI PXIe-4080
National Instruments NI PXIe-4081
National Instruments Phase Matrix PXI-1440
National Instruments NI PXIe-4138
National Instruments NI FlexRIO PXIe-7975
National Instruments PXI-2568
National Instruments NI FlexRIO PXI-7951R
National Instruments NI PXIe-4142
National Instruments Categories
Control Unit
I/O Systems
Controller
Computer Hardware
Measuring Instruments
More National Instruments Manuals
Login
Sign In
OR
Sign in with Facebook
Sign in with Google
Upload manual
Upload from disk
Upload from URL