National Instruments 777687-20 Manuals

Manuals and User Guides for National Instruments 777687-20. We have 3 National Instruments 777687-20 manuals available for free PDF download: User Manual

National Instruments 777687-20 User Manual (159 pages)

Brand: National Instruments | Category: Terminal Block | Size: 4.87 MB

Table of Contents
5
About this Manual
10
Conventions
10
Related Documentation
11
Introduction
12
Optional Software
13
What Your Kit Should Contain
13
Optional Equipment
15
Custom Cables
16
Unpacking
17
Configuration and Installation
18
Module Configuration
18
Figure 2-1. SCXI-1121 General Parts Locator Diagram
19
Figure 2-2. SCXI-1121 Detailed Parts Locator Diagram
20
Digital Signal Connections
21
Jumper W44
21
Jumper W32
22
Jumper W38
22
Using Jumpers W32 and W38
22
Table 2-1. Digital Signal Connections, Jumper Settings
23
Analog Configuration
24
Grounding, Shielding, and Reference Mode Selection
24
Table 2-2. Jumper W33 Settings
25
Input Channel Jumpers
26
Table 2-3. Gain Jumper Allocation
26
Table 2-4. Gain Jumper Positions
26
Excitation Jumpers
27
Table 2-5. Filter Jumper Allocation
27
Table 2-6. Voltage and Current Mode Excitation Jumper Setup
28
Table 2-7. Maximum Load Per Excitation Channel
28
Table 2-8. Excitation Level Jumper Selection
29
Table 2-9. Completion Network Jumpers
30
Hardware Installation
31
Front Connector
32
Signal Connections
32
Figure 2-3. SCXI-1121 Front Connector Pin Assignment
33
Front Connector Signal Descriptions
34
Analog Input Channels
36
Figure 2-4. Ground-Referenced Signal Connection with High Common-Mode Voltage
36
Figure 2-5. Floating Signal Connection Referenced to Chassis Ground for
36
Figure 2-6. Floating AC-Coupled Signal Connection
37
Figure 2-7. AC-Coupled Signal Connection with High Common-Mode Voltage
37
Excitation Channels
38
Temperature Sensor Connection
38
Connector-And-Shell Assembly
39
SCXI-1320, SCXI-1328, and SCXI-1321 Terminal Blocks
40
Table 2-10. Trimmer Potentiometer and Corresponding Channel
42
Table 2-11. Nulling Resistors and Corresponding Channel
42
Table 2-12. Jumper Settings of the Nulling Circuits
44
Table 2-13. Jumper Settings on the SCXI-1320 Terminal Block
48
Table 2-14. Jumper Settings on the SCXI-1328 Terminal Block
48
Table 2-15. Jumper Settings on the SCXI-1321 Terminal Block
49
Rear Signal Connector
53
Rear Signal Connector Signal Descriptions
54
Analog Output Signal Connections
55
Digital I/O Signal Connections
56
Table 2-16. Scxibus to SCXI-1121 Rear Signal Connector to Data Acquisition
57
Timing Requirements and Communication Protocol
57
Communication Signals
58
Functional Overview
63
Theory of Operation
63
Scxibus Connector
65
Scxibus Connector Signal Descriptions
66
Table 3-1. Scxibus Equivalents for the Rear Signal Connector
67
Digital Interface
68
Digital Control Circuitry
69
Analog and Timing Circuitry
70
Analog Input Channels
70
Calibration
73
Excitation Output Channels
73
Analog Output Circuitry
74
Multiplexed Scanning
76
Scanning Modes
76
Single-Module Parallel Scanning
76
Single-Module Multiplexed Scanning
77
Multiple-Module Multiplexed Scanning
78
Multiple-Chassis Scanning
79
Register Description
80
Register Description Format
80
Register Descriptions
80
SCXI-1121 Registers
80
Slot 0 Register Descriptions
84
Notation
89
Programming
89
Programming Considerations
89
Register Writes
89
Register Selection and Write Procedure
90
Table 5-1. SCXI-1121 Rear Signal Connector Pin Equivalences
90
Direct Measurements
92
Initialization
92
Single-Channel Measurements
92
Indirect Measurements
93
Data Acquisition Board Setup Programming
95
Scanning Measurements
95
Module Programming
98
Programming the Slot 0 Hardscan Circuitry
101
Acquisition Enable, Triggering, and Servicing
103
Example 1
103
Scanning Examples
103
Example 2
104
Example 3
105
Appendix A Specifications

108
Appendix B Rear Signal Connector

113

National Instruments 777687-20 User Manual (101 pages)

Brand: National Instruments | Category: Terminal Block | Size: 1.21 MB

Table of Contents
5
About the SCXI-1125
10
What You Need to Get Started
10
National Instruments Documentation
12
Installing Application Software, NI-DAQ, and the DAQ Device
13
Installing the SCXI-1125 Module into the SCXI Chassis
13
Connecting the SCXI-1125 in an SCXI Chassis to an E/M/X Series DAQ Device for Multiplexed Scanning
13
Connecting the SCXI-1125 in a PXI/SCXI Combination Chassis to an E/M/X Series DAQ Device for Multiplexed Scanning
14
Connecting the SCXI-1125 to an E/M/X Series DAQ Device for Parallel Scanning
14
Verifying the SCXI-1125 Installation in Software
15
Installing SCXI Using NI-Daqmx in Software
15
Manually Adding Modules in NI-Daqmx
15
Installing SCXI Using Traditional NI-DAQ (Legacy) in Software
15
Manually Adding Modules in Traditional NI-DAQ (Legacy)
15
Verifying and Self-Testing the Installation
15
Troubleshooting the Self-Test Verification
16
Troubleshooting in NI-Daqmx
16
Connecting Signals
18
AC and DC Voltage Connections
18
Ground-Referenced Signal
19
Figure 2-1. Connecting a Ground-Referenced Signal
19
Floating Signal
20
Figure 2-2. Connecting a Floating Signal
20
AC-Coupling
21
Figure 2-3. Connecting a Floating AC-Coupled Signal
21
Figure 2-4. Connecting a Ground-Referenced AC-Coupled Signal
21
Pin Assignments
22
Table 2-1. Front Signal Pin Assignments
23
Temperature Sensor Connection
24
Rear Signal Connector
24
Table 2-2. Rear Signal Pin Assignments
25
Configuring and Testing
26
SCXI-1125 Software-Configurable Settings
26
Common Software-Configurable Settings
26
Filter Bandwidth
26
Gain/Input Range
26
Connecting the SCXI-1125 in an SCXI Chassis to an E/M/X Series DAQ Device for Multiplexed Scanning
27
Connecting the SCXI-1125 in a PXI/SCXI Combination Chassis to an E/M/X Series DAQ Device for Multiplexed Scanning
27
Configurable Settings in MAX
27
NI-Daqmx
28
Creating a Voltage Global Channel or Task
28
Traditional NI-DAQ (Legacy)
29
Configuring Module Property Pages in Traditional NI-DAQ (Legacy)
30
Creating a Virtual Channel
31
Verifying the Signal
31
Verifying the Signal in NI-Daqmx Using a Task or Global Channel
31
Verifying the Signal in Traditional NI-DAQ (Legacy)
32
Verifying the Signal Using Channel Strings
32
Verifying the Signal Using Virtual Channel
33
Theory of Operation
34
Gain
34
Figure 4-1. SCXI-1125 Block Diagram
34
Filter Bandwidth and Cutoff Frequency
35
Operating in Multiplexed Mode
35
Multiplexed Hardware Operation Theory
36
Operating in Parallel Mode
37
Theory of Parallel Hardware Operation
37
Using the SCXI-1125
38
Temperature Measurements Using Thermocouples
38
Making High-Voltage Measurements
41
Table 5-1. Extended Gain and Range Using the SCXI-1327 or SCXI-1313A
41
Developing Your Application in NI-Daqmx
42
Typical Program Flowchart
42
Table 5-2. Extended Gain and Range Using the TBX-1316
42
Figure 5-1. Typical Program Flowchart
43
General Discussion of Typical Flowchart
44
Creating a Task Using DAQ Assistant or Programmatically
44
Adjusting Timing and Triggering
44
Configuring Channel Properties
45
Table 5-3. NI-Daqmx Properties
45
Acquiring, Analyzing, and Presenting
46
Completing the Application
46
Developing an Application Using Labview
46
Table 5-4. Programming a Task in Labview
47
Using a Daqmx Channel Property Node in Labview
48
Specifying Channel Strings in NI-Daqmx
49
Figure 5-2. Labview Channel Property Node with Lowpass Frequency Set at 10 Khz on Channel Sc1Mod1/Ai0
49
Text Based Ades
51
Measurement Studio (Visual Basic, .NET, and C#)
51
Programmable NI-Daqmx Properties
51
Developing Your Application in Traditional NI-DAQ (Legacy)
52
Table 5-5. NI-Daqmx Properties
52
Traditional NI-DAQ (Legacy) in Labview
53
Typical Program Flow
54
Figure 5-3. Typical SCXI-1125 Program Flow with Traditional NI-DAQ (Legacy)
54
Configure the SCXI-1125 Settings Using Traditional NI-DAQ (Legacy) in Labview
55
Table 5-6. Settings for Configuring the SCXI-1125 through the AI Parameter
55
Configure, Start Acquisition, and Take Readings Using Traditional NI-DAQ (Legacy) in Labview
56
Figure 5-4. Using the AI Parameter VI to Set up the SCXI-1125
56
Convert Scaling Using Traditional NI-DAQ (Legacy) in Labview
57
Analyze and Display Using Traditional NI-DAQ (Legacy) in Labview
57
Traditional NI-DAQ (Legacy) in Text-Based Ades
58
Configuring System Settings Using Traditional NI-DAQ (Legacy) C API
58
Configure Module Settings Using Traditional NI-DAQ (Legacy) C API
59
Table 5-7. Configuration Functions
59
Perform Offset Null Compensation Using Traditional NI-DAQ (Legacy) C API
60
Perform Acquisition Using Traditional NI-DAQ (Legacy) C API
60
Table 5-8. NI-DAQ Functions Used to Configure SCXI-1125
60
Perform Scaling, Analysis, and Display
61
Using Software for Multiplexed Scanning
61
Labview and the SCXI Channel String
62
Labview and the Virtual Channel String
63
Performing a Multiplexed Scan
64
C and Low-Level DAQ Functions
65
Using Software for Parallel Scanning
65
Labview and Parallel Mode
65
C and Parallel Mode
66
Other Application Documentation and Material
66
Traditional NI-DAQ (Legacy) CVI Examples
66
Traditional NI-DAQ (Legacy) Measurement Studio Examples
66
Calibration
67
Calibration Procedures
67
One-Point Offset Calibration
68
Table 5-9. Gain Values and Input Limits
68
Two-Point Gain and Offset Calibration
69
Table A-1. Input Signal Range Versus Gain
70
Figure A-1. SCXI-1125 Dimensions
76
Table A-2. Terminal Block Maximum Voltages
77
Removing the SCXI-1125
82
Table D-1. Comparison of the SCXI-1125 with the SCXI-1120
84
Table D-2. Digital Signals on the SCXI-1125
86

National Instruments 777687-20 User Manual (73 pages)

Eight-Channel Isolated Analog Input Module and Eight-Channel Wide Band Isolated Analog Input Module for Signal Conditioning

Brand: National Instruments | Category: I/O Systems | Size: 0.51 MB

Table of Contents
4
About this Manual
7
Conventions
7
National Instruments Documentation
8
About the SCXI-1120/D
9
Introduction
9
What You Need to Get Started
10
National Instruments Application Software
11
Software Programming Choices
11
Unpacking
11
NI-DAQ Driver Software
12
Figure 1-1. the Relationship between the Programming Environment
13
Optional Equipment
13
Configuration and Installation
14
Module Configuration
14
Figure 2-1. SCXI-1120/D Parts Locator Diagram
15
Digital Signal Connections
17
Figure 2-2. Removing the SCXI Module Cover
17
Using Jumpers W42 and W43
18
Using Jumper W44 on Revision C of the SCXI-1120 and All Revisions of the SCXI-1120D
19
Using Jumper W44 on Revisions a and B of the SCXI-1120
19
Table 2-1. Digital Signal Connections, Jumper Settings
20
Analog Configuration
21
Grounding, Shielding, and Reference-Mode Selection
21
Table 2-2. Jumper W46 Settings
22
Direct Temperature Connection
23
Gain Jumpers for the SCXI-1120/D
23
Table 2-3. Jumper W41 Settings
23
Table 2-4. Gain Jumper Allocation
23
Table 2-5. Gain Jumper Positions
24
SCXI-1120 Filter Jumpers
25
Table 2-6. SCXI-1120 Filter Jumper Allocation
25
SCXI-1120D Filter Jumpers
26
Table 2-7. SCXI-1120D Filter Jumper Allocation
26
Hardware Installation
27
Signal Connections
28
Figure 3-1. SCXI-1120/D Front Connector Pin Assignments
30
SCXI-1120/D Front Connector
30
Front Connector Signal Descriptions
31
Table 3-1. SCXI-1120/D Front Connector Signal Descriptions
31
Analog Input Channels
32
Figure 3-2. Ground-Referenced Signal Connection for the SCXI-1120/D with High Common-Mode Voltage
32
Figure 3-3. Floating Signal Connection for the SCXI-1120/D Referenced to
32
Floating AC-Coupled Signal Connection for the SCXI-1120
33
High Common-Mode Voltage
33
Floating AC-Coupled Signal Connection for the SCXI-1120D
34
High Common Mode Voltage
34
Temperature Sensor Connection
34
SCXI-1120/D Rear Connector
35
SCXI-1120/D Rear Signal Connector Pin Assignments
35
Rear Connector Signal Descriptions
36
Table 3-2. Rear Connector Signal Descriptions
36
Analog Output Signal Connections
37
Table 3-3. Scxibus to SCXI-1120/D Rear Connector to DAQ Device Pin Equivalencies
38
Functional Overview
39
Theory of Operation
39
Power-Up State
40
Digital Interface Circuitry Block Diagram
41
Scxibus Connector and Digital Interface
41
Digital Control Circuitry
42
Analog and Timing Circuitry
43
Analog Input Block Diagram
44
Analog Input Channels
44
Analog Output Circuitry
47
Calibration
50
Calibration Equipment Requirements
50
Offset Null Adjust
50
Table 5-1. Calibration Potentiometers Reference Designators
51
Appendix A Specifications

52

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