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National Instruments SCXI-1121 Manuals
Manuals and User Guides for National Instruments SCXI-1121. We have
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National Instruments SCXI-1121 manuals available for free PDF download: User Manual, Getting Started, Quick Start Manual, Calibration Procedure, Instructions For Safe Use
National Instruments SCXI-1121 User Manual (146 pages)
Four-Channel Isolated Universal Transducer Module for Signal Conditioning
Brand:
National Instruments
| Category:
Transducer
| Size: 0 MB
Table of Contents
Table of Contents
5
About this Manual
11
Organization of this Manual
11
Conventions Used in this Manual
12
Related Documentation
13
Customer Communication
13
Chapter 1 Introduction
14
What Your Kit Should Contain
14
Optional Software
15
Optional Equipment
16
Custom Cables
16
Unpacking
17
Chapter 2 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 W32
22
Jumper W38
22
Jumper W44
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
Jumper W33
24
Gain Jumpers
25
Input Channel Jumpers
25
Table 2-2. Jumper W33 Settings
25
Table 2-3. Gain Jumper Allocation
25
Filter Jumpers
26
Table 2-4. Gain Jumper Positions
26
Table 2-5. Filter Jumper Allocation
26
Current and Voltage Excitation Jumpers
27
Excitation Jumpers
27
Excitation Level
27
Table 2-6. Voltage and Current Mode Excitation Jumper Setup
27
Table 2-7. Maximum Load Per Excitation Channel
27
Table 2-8. Excitation Level Jumper Selection
28
Using the Internal Half-Bridge Completion
28
Hardware Installation
29
Table 2-9. Completion Network Jumpers
29
Signal Connections
30
Front Connector
30
Figure 2-3. SCXI-1121 Front Connector Pin Assignment
31
Front Connector Signal Descriptions
32
Analog Input Channels
34
Figure 2-4. Ground-Referenced Signal Connection with High Common-Mode Voltage
34
Figure 2-5. Floating Signal Connection Referenced to Chassis Ground for Better Signal-To-Noise Ratio
34
Figure 2-6. Floating AC-Coupled Signal Connection
35
Figure 2-7. AC-Coupled Signal Connection with High Common-Mode Voltage
35
Connector-And-Shell Assembly
36
Excitation Channels
36
Temperature Sensor Connection
36
Figure 2-8. Assembling and Mounting the SCXI-1330 Connector-And-Shell Assembly
37
SCXI-1320 and SCXI-1328 Terminal Blocks
38
SCXI-1320, SCXI-1328, and SCXI-1321 Terminal Blocks
38
SCXI-1321 Nulling Circuitry
38
SCXI-1321 Offset-Null and Shunt-Calibration Terminal Block
38
Table 2-10. Trimmer Potentiometer and Corresponding Channel
39
Table 2-11. Nulling Resistors and Corresponding Channel
39
Figure 2-9. Nulling Circuit
40
Using the SCXI-1321 with Rtds and Thermistors
40
Table 2-12. Jumper Settings of the Nulling Circuits
41
Figure 2-10. Shunt Circuit
42
Terminal Block Temperature Sensor
43
Table 2-13. Jumper Settings on the SCXI-1320 Terminal Block
44
Table 2-14. Jumper Settings on the SCXI-1328 Terminal Block
44
Terminal Block Jumper Configuration
44
Table 2-15. Jumper Settings on the SCXI-1321 Terminal Block
45
Terminal Block Signal Connection
45
Figure 2-11. SCXI-1320 Parts Locator Diagram
46
Figure 2-12. SCXI-1328 Parts Locator Diagram
47
Figure 2-13. SCXI-1321 Parts Locator Diagram
48
Terminal Block Installation
49
Rear Signal Connector
49
Figure 2-14. SCXI-1121 Rear Signal Connector Pin Assignment
50
Rear Signal Connector Signal Descriptions
51
Analog Output Signal Connections
52
Digital I/O Signal Connections
52
Table 2-16. Scxibus to SCXI-1121 Rear Signal Connector to Data Acquisition Board Pin Equivalences
53
Communication Signals
54
Figure 2-15. SCANCLK Timing Requirements
54
Timing Requirements and Communication Protocol
54
Timing Signal
54
Figure 2-16. Slot-Select Timing Diagram
55
Figure 2-17. Serial Data Timing Diagram
56
Figure 2-18. Configuration Register Write Timing Diagram
57
Figure 2-19. SCXI-1121 Module ID Register Timing Diagram
57
Chapter 3 Theory of Operation
58
Functional Overview
58
Figure 3-1. SCXI-1121 Block Diagram
58
Scxibus Connector
59
Figure 3-2. Scxibus Connector Pin Assignment
60
Scxibus Connector Signal Descriptions
61
Table 3-1. Scxibus Equivalents for the Rear Signal Connector
62
Digital Interface
63
Figure 3-3. Digital Interface Circuitry Block Diagram
63
Digital Control Circuitry
64
Figure 3-4. SCXI-1121 Digital Control
64
Analog and Timing Circuitry
65
Analog Input Channels
65
Figure 3-5. Analog Input Block Diagram
66
Excitation Output Channels
67
Calibration
68
Calibration Equipment Requirements
68
Excitation Adjust
69
Offset Null Adjust
69
Table 3-2. Calibration Potentiometer Reference Designators
70
Analog Output Circuitry
71
Figure 3-6. Analog Output Circuitry
71
Scanning Modes
72
Single-Module Parallel Scanning
72
Multiplexed Scanning
73
Figure 3-7. Single-Module Parallel Scanning
73
Single-Module Multiplexed Scanning
73
Single-Module Multiplexed Scanning (Direct)
73
Figure 3-8. Single-Module Multiplexed Scanning (Direct)
74
Figure 3-9. Single-Module Multiplexed Scanning (Indirect)
74
Multiple-Module Multiplexed Scanning
74
Single-Module Multiplexed Scanning (Indirect)
74
Figure 3-10. Multiple-Module Multiplexed Scanning
75
Figure 3-11. Multiple-Chassis Scanning
75
Multiple-Chassis Scanning
75
Chapter 4 Register Descriptions
76
Register Description
76
Register Description Format
76
SCXI-1121 Registers
76
Module ID Register
77
Configuration Register
78
Slot 0 Register Descriptions
80
Slot-Select Register
81
Hardscan Control Register (HSCR)
82
FIFO Register
83
Chapter 5 Programming
84
Programming Considerations
84
Notation
84
Register Writes
84
Register Selection and Write Procedure
85
Table 5-1. SCXI-1121 Rear Signal Connector Pin Equivalences
85
Initialization
86
Single-Channel Measurements
86
Direct Measurements
86
Multiplexed Output
86
Parallel Output
86
Indirect Measurements
87
Measurements from Other Modules
87
Measurements from the SCXI-1121 Via Another Module
88
Scanning Measurements
89
Data Acquisition Board Setup Programming
89
Counter 1 and SCANDIV
91
Channel Scanning from Other Modules
92
Module Programming
92
Single-Module Multiplexed Scanning (Direct)
92
Single-Module Multiplexed Scanning (Indirect)
92
Single-Module Parallel Scanning
92
Channel Scanning from the SCXI-1121 Via Another Module
93
Multiple-Module Multiplexed Scanning
93
Multiple-Chassis Scanning
94
Programming the Slot 0 Hardscan Circuitry
94
Acquisition Enable, Triggering, and Servicing
95
Scanning Examples
96
Example 1
96
Example 3
97
Appendix A Specifications
99
Analog Input
99
RTD Mode
100
Strain Gauge Mode
100
Cold-Junction Sensor
101
Physical
101
Operating Environment
102
Storage Environment
102
Appendix B Rear Signal Connector
103
Figure B-1. SCXI-1121 Rear Signal Connector Pin Assignment
103
Rear Signal Connector Signal Descriptions
104
Appendix Cscxibus Connector
105
Figure C-1. Scxibus Connector Pin Assignment
106
Scxibus Connector Signal Descriptions
107
Appendix D SCXI-1121 Front Connector
109
Figure D-1. SCXI-1121 Front Connector Pin Assignment
109
Front Connector Signal Descriptions
110
Appendix Escxi-1121 Cabling
115
SCXI-1340 Cable Assembly
115
SCXI-1340 Installation
116
Table E-1. SCXI-1121 and MIO-16 Pinout Equivalences
116
SCXI-1341 Lab-NB, Lab-PC, or Lab-PC+ and SCXI-1344 Lab-LC Cable Assembly
117
Figure E-1. SCXI-1340 Installation
117
SCXI-1341 and SCXI-1344 Installation
118
Table E-2. SCXI-1341 and SCXI-1344 Pin Translations
118
SCXI-1342 PC-LPM-16 Cable Assembly
119
Table E-3. SCXI-1342 Pin Translations
119
SCXI-1342 Installation
120
SCXI-1180 Feedthrough Panel
120
SCXI-1180 Installation
120
Figure E-2. SCXI-1180 Rear Connections
121
SCXI-1302 50-Pin Terminal Block
122
Figure E-3. SCXI-1180 Front Panel Installation
122
SCXI-1302 Wiring Procedure
122
SCXI-1302 Installation
123
SCXI-1351 One-Slot Cable Extender
123
Figure E-4. Cover Removal
123
SCXI-1351 Installation
124
SCXI-1350 Multichassis Adapter
124
SCXI-1350 Installation
124
SCXI-1343 Rear Screw Terminal Adapter
125
SCXI-1343 Installation
125
Table E-4. SCXI-1343 Pin Connections
126
Appendix F
127
Figure F-1. Revision a and B SCXI-1121 Signal Conditioning Module
127
Revision a and B Photo and Parts Locator Diagrams
127
Figure F-2. Revision a and B SCXI-1121 General Parts Locator Diagram
128
Figure F-3. Revision a and B SCXI-1121 Detailed Parts Locator Diagram
129
Appendix G
130
Customer Communication
130
Glossary
134
Index
138
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National Instruments SCXI-1121 User Manual (162 pages)
Four-Channel Isolated Universal Transducer Module for Signal Conditioning
Brand:
National Instruments
| Category:
Network Hardware
| Size: 2 MB
Table of Contents
Important Information
3
Table of Contents
4
About this Manual
9
Conventions
9
Related Documentation
10
Chapter 1 Introduction
11
What Your Kit Should Contain
12
Optional Software
12
Optional Equipment
14
Custom Cables
15
Unpacking
16
Chapter 2 Configuration and Installation
17
Module Configuration
17
Figure 2-1. SCXI-1121 General Parts Locator Diagram
17
Figure 2-2. SCXI-1121 Detailed Parts Locator Diagram
18
Digital Signal Connections
19
Jumper W44
19
Jumper W38
20
Jumper W32
20
Using Jumpers W32 and W38
20
Table 2-1. Digital Signal Connections, Jumper Settings
21
Jumper W38
19
Analog Configuration
22
Grounding, Shielding, and Reference Mode Selection
22
Table 2-2. Jumper W33 Settings
23
Input Channel Jumpers
24
Gain Jumpers
24
Table 2-3. Gain Jumper Allocation
24
Table 2-4. Gain Jumper Positions
24
Filter Jumpers
25
Table 2-5. Filter Jumper Allocation
25
Excitation Jumpers
25
Table 2-6. Voltage and Current Mode Excitation Jumper Setup
26
Table 2-7. Maximum Load Per Excitation Channel
27
Table 2-8. Excitation Level Jumper Selection
27
Table 2-9. Completion Network Jumpers
28
Hardware Installation
30
Signal Connections
31
Front Connector
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
38
Figure 2-8. Assembling and Mounting the SCXI-1330 Connector-And-Shell Assembly
39
SCXI-1320, SCXI-1328, and SCXI-1321 Terminal Blocks
40
Table 2-10. Trimmer Potentiometer and Corresponding Channel
41
Table 2-11. Nulling Resistors and Corresponding Channel
42
Figure 2-9. Nulling Circuit
43
Table 2-12. Jumper Settings of the Nulling Circuits
44
Figure 2-10. Shunt Circuit
45
Terminal Block Jumper Configuration
47
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
48
Figure 2-11. SCXI-1320 Parts Locator Diagram
50
Figure 2-12. SCXI-1328 Parts Locator Diagram
51
Figure 2-13. SCXI-1321 Parts Locator Diagram
52
Terminal Block Installation
52
Rear Signal Connector
53
Figure 2-14. SCXI-1121 Rear Signal Connector Pin Assignment
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 Board Pin Equivalences
57
Timing Requirements and Communication Protocol
58
Timing Signal
58
Communication Signals
58
Figure 2-15. SCANCLK Timing Requirements
58
Figure 2-16. Slot-Select Timing Diagram
59
Figure 2-17. Serial Data Timing Diagram
60
Figure 2-18. Configuration Register Write Timing Diagram
61
Figure 2-19. SCXI-1121 Module ID Register Timing Diagram
62
Chapter 3 Theory of Operation
63
Functional Overview
63
Figure 3-1. SCXI-1121 Block Diagram
63
Figure 3-2. Scxibus Connector Pin Assignment
65
Scxibus Connector
65
Scxibus Connector Signal Descriptions
66
Table 3-1. Scxibus Equivalents for the Rear Signal Connector
67
Digital Interface
68
Figure 3-3. Digital Interface Circuitry Block Diagram
68
Digital Control Circuitry
69
Figure 3-4. SCXI-1121 Digital Control
69
Analog and Timing Circuitry
70
Analog Input Channels
70
Figure 3-5. Analog Input Block Diagram
71
Excitation Output Channels
73
Calibration
73
Calibration Equipment Requirements
73
Offset Null Adjust
74
Excitation Adjust
75
Table 3-2. Calibration Potentiometer Reference Designators
76
Analog Output Circuitry
77
Figure 3-6. Analog Output Circuitry
77
Scanning Modes
79
Single-Module Parallel Scanning
79
Multiplexed Scanning
79
Figure 3-7. Single-Module Parallel Scanning
79
Figure 3-8. Single-Module Multiplexed Scanning (Direct)
80
Single-Module Multiplexed Scanning
80
Figure 3-10. Multiple-Module Multiplexed Scanning
81
Figure 3-9. Single-Module Multiplexed Scanning (Indirect)
81
Multiple-Module Multiplexed Scanning
81
Figure 3-11. Multiple-Chassis Scanning
82
Multiple-Chassis Scanning
82
Chapter 4 Register Descriptions
83
Register Description
83
Register Description Format
83
SCXI-1121 Registers
83
Module ID Register
84
Configuration Register
85
Slot 0 Register Descriptions
87
Slot-Select Register
88
Hardscan Control Register (HSCR)
89
Fifo Register
91
Chapter 5 Programming
92
Programming Considerations
92
Notation
92
Register Writes
93
Register Selection and Write Procedure
93
Table 5-1. SCXI-1121 Rear Signal Connector Pin Equivalences
93
Initialization
94
Single-Channel Measurements
95
Direct Measurements
95
Indirect Measurements
96
Measurements from Other Modules
96
Scanning Measurements
98
Data Acquisition Board Setup Programming
98
Module Programming
101
Programming the Slot 0 Hardscan Circuitry
104
Acquisition Enable, Triggering, and Servicing
105
Scanning Examples
106
Example 1
106
Example 2
106
Example 3
107
Specifications
109
Analog Input
109
Figure B-1. SCXI-1121 Rear Signal Connector Pin Assignment
113
Scxibus Connector
115
Figure C-1. Scxibus Connector Pin Assignment
116
Figure D-1. SCXI-1121 Front Connector Pin Assignment
120
SCXI-1340 Cable Assembly
123
Table E-1. SCXI-1121 and MIO-16 Pinout Equivalences
124
SCXI-1340 Installation
125
Figure E-1. SCXI-1340 Installation
126
Table E-2. SCXI-1341 and SCXI-1344 Pin Translations
127
SCXI-1342 PC-LPM-16 Cable Assembly
128
SCXI-1342 Pin Translations
128
SCXI-1180 Feedthrough Panel
130
SCXI-1342 Installation
130
Figure E-2. SCXI-1180 Rear Connections
131
SCXI-1180 Installation
131
Figure E-3. SCXI-1180 Front Panel Installation
132
SCXI-1302 50-Pin Terminal Block
132
SCXI-1302 Wiring Procedure
132
Figure E-4. Cover Removal
133
SCXI-1302 Installation
133
SCXI-1350 Multichassis Adapter
134
SCXI-1351 Installation
134
SCXI-1351 One-Slot Cable Extender
134
SCXI-1350 Installation
135
SCXI-1343 Installation
136
SCXI-1343 Rear Screw Terminal Adapter
136
Table E-4. SCXI-1343 Pin Connections
136
Revision a and B Photo and Parts Locator Diagrams
139
Figure F-1. Revision a and B SCXI-1121 Signal Conditioning Module
139
Figure F-2. Revision a and B SCXI-1121 General Parts Locator Diagram
140
Figure F-3. Revision a and B SCXI-1121 Detailed Parts Locator Diagram
141
Technical Support Resources
142
Germany 089 741 31 30, Greece 30 1 42 96 427, Hong Kong 2645 3186, India
143
Mexico (Monterrey) 8 357 7695, Netherlands 0348 433466, Norway 32 27 73 00, Singapore
143
Worldwide Support
143
National Instruments SCXI-1121 Getting Started (158 pages)
Brand:
National Instruments
| Category:
Control Unit
| Size: 1 MB
Table of Contents
Table of Contents
4
About this Manual
10
Conventions Used in this Guide
10
Related Documentation
12
Chapter 1 Introduction to SCXI
13
Appendix A
14
Appendix B
14
Figure 1-1. SCXI Systems
14
What You Need to Get Started
15
Identifying Your SCXI Components
15
Figure 1-2. SCXI System Components
16
SCXI Chassis
16
Figure 1-3. SCXI Chassis Signal Routing
17
SCXI Modules
17
Table 1-1. SCXI Modules
18
SCXI Terminal Blocks
19
Figure 1-4. Terminal Block Options
20
Table 1-2. Direct-Mount Terminal Blocks
21
Connector-And-Shell Assemblies
25
DAQ Modules
25
DAQ Plug-In Devices and PC Cards
25
SCXI Cable Assemblies
26
SCXI Multichassis System with Plug-In DAQ Device
26
Table 1-4. SCXI Cable Assemblies
26
Figure 1-5. Multichassis SCXI System with Shielded Cabling
27
Optional Software
27
Figure 1-6. the Relationship between the Programming Environment
28
Overview of SCXI Operation
29
Analog Input Modules
29
Figure 1-7. SCXI Signal Routing
30
Analog and Digital Output Modules
31
Chapter 2
32
Installing SCXI Modules and Connecting the SCXI System
32
To the DAQ Device
32
Installing Your Software
32
Installing Your DAQ Device
33
Installing Your SCXI Modules
33
Connecting the SCXI System to the DAQ Device or Computer
33
Using the Parallel Port
33
Using a Plug-In DAQ Device or Daqcard
33
Figure 2-1. Attaching the SCXI Cable Assembly to the SCXI Module and Chassis
35
Using an RS-232 or RS-485 Serial Port
37
Chapter 3 Configuring Your SCXI Hardware and Software
38
Module Configuration
38
Figure 3-1. Removing the SCXI Module Grounding Screw
38
Analog Modules
39
Figure 3-2. Removing the SCXI Module Cover
39
Ground-Referenced and Floating Signal Sources
40
SCXI-1100 Module
41
Table 3-1. SCXI-1100 Input Signal Referencing Jumper Configurations
42
Table 3-2. SCXI-1100 Filtering Jumper Configuration
43
SCXI-1102/B/C Module
44
Table 3-3. SCXI-1100 PGIA Output Referencing Jumper Configuration
44
SCXI-1104/C Module
45
SCXI-1112 Module
45
SCXI-1120/D Module
45
Table 3-4. Gain Jumper Allocation
46
Table 3-5. Gain Jumper Positions
47
Table 3-6. SCXI-1120 Filter Jumper Allocation
48
Table 3-7. SCXI-1120D Filter Jumper Allocation
49
SCXI-1121 Module
51
Table 3-8. SCXI-1120/D Signal Referencing Jumper Configuration
51
Table 3-10. SCXI-1121 Gain Jumper Configuration
53
Table 3-9. SCXI-1121 First-Stage and Second-Stage Gain
53
Table 3-11. SCXI-1121 First-Stage and Second-Stage Filter
54
Table 3-12. SCXI-1121 Excitation Mode Jumper Configuration
55
Table 3-13. SCXI-1121 Excitation Level Jumper Configuration
57
Table 3-14. SCXI-1121 Maximum Load Per Excitation Channel
58
Table 3-15. SCXI-1121 Half-Bridge Completion Network Jumper Configuration
59
SCXI-1122 Module
60
Current-Loop Receivers
62
Scanning Techniques
62
Figure 3-3. Scanning Techniques
63
SCXI-1124 Module
63
SCXI-1125 Module
65
SCXI-1126 Module
66
SCXI-1140 Module
66
DAQ Device Connections in Multiple-Module Systems
66
User-Configurable Jumpers and DIP Switches
66
SCXI-1141, SCXI-1142, and SCXI-1143 Modules
69
SCXI-1520 Module
71
SCXI-1530/1531 Module
72
SCXI-1540 Module
73
Digital SCXI Modules
73
Communication Modes
74
Parallel Mode
74
Serial Mode
74
SCXI-1160 Module
75
SCXI-1161 Module
75
SCXI-1162 Module
76
SCXI-1162HV Module
79
SCXI-1163 Module
81
SCXI-1163R Module
84
SCXI-1200 Module
87
Parallel Port Interface
87
Analog I/O Configuration
88
Module Configuration
88
Analog Input Configuration
89
Analog Output Configuration
89
Analog Input Polarity and Range Configuration
91
Figure 3-4. SCXI-1200 Front Connector Pin Assignments
92
SCXI-1180 Feedthrough Panel
93
SCXI-1181 Breadboard Module
93
SCXI-2400 Serial Communications Module
93
Baud Rate and Address Configuration
94
Figure 3-5. SCXI-2400 Module Default Switch Settings
94
SCXI Chassis
95
Baud Rate and Address Configuration
95
SCXI-1000, SCXI-1000DC, and SCXI-1001 Chassis
95
SCXI-2000 Chassis with Serial Communications
95
Configure Your Software for Use with SCXI Products
96
Example Programs
96
Chapter 4 Connecting and Using Accessories and Transducers
97
Connecting Signal Wires to the SCXI System
97
SCXI-13XX Terminal Blocks
100
TBX Terminal Blocks
100
Figure 4-1. TBX Terminal Block Cabled to an SCXI Module
100
Onboard Temperature Sensors for Cold-Junction Compensation
101
Opening the SCXI-13XX Terminal Block
102
Figure 4-2. Removing the Terminal Block Grounding Screw
102
Figure 4-3. Removing the Terminal Block Cover
102
Connector-And-Shell Assemblies
103
Connecting Transducers to the SCXI System
103
Thermocouples
103
Using Thermocouples with the SCXI-1100
103
Using Thermocouples with the SCXI-1102
104
Using Thermocouples with the SCXI-1112, SCXI-1120, SCXI-1121, SCXI-1122, and SCXI-1125
104
Noise and Filtering
105
Strain Gauges
105
Figure 4-4. Connecting the Half-Bridge Strain Gauge to Channel 1 of the
106
Figure 4-5. Quarter-Bridge Configurations
108
Figure 4-6. Half-Bridge Configurations
109
Figure 4-7. Full-Bridge Configurations
110
Figure 4-8. SCXI-1520 to SCXI-1314 Quarter-Bridge Connection
112
Figure 4-9. SCXI-1520 to SCXI-1314 Half-Bridge Connection
113
Figure 4-10. SCXI-1520 to SCXI-1314 Full-Bridge Connection
114
Rtds
115
Current Excitation
117
Analog Circuitry in the SCXI-1122
119
Analog Input Channels
120
Excitation Output Channels
121
Analog Output Channel Signal Connections on the SCXI-1124
124
Chassis Ground Connections
127
Lvdts, Rvdts, and Resolvers
127
Connecting to Lvdts and Rvdts
128
Synchronizing Channels
129
Connecting to Resolvers
131
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National Instruments SCXI-1121 User Manual (159 pages)
Brand:
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| Category:
Terminal Block
| Size: 4 MB
Table of Contents
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
Scxibus Connector
115
SCXI-1121 Front Connector
119
SCXI-1121 Cabling
123
Table E-1. SCXI-1121 and MIO-16 Pinout Equivalences
124
Table E-2. SCXI-1341 and SCXI-1344 Pin Translations
127
Table E-3. SCXI-1342 Pin Translations
129
Table E-4. SCXI-1343 Pin Connections
136
Revision a and B Photo and Parts Locator Diagrams
139
National Instruments SCXI-1121 Quick Start Manual (61 pages)
Signal Conditioning eXtensions for Instrumentation
Brand:
National Instruments
| Category:
Control Unit
| Size: 4 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
National Instruments SCXI-1121 Calibration Procedure (21 pages)
Brand:
National Instruments
| Category:
I/O Systems
| Size: 1 MB
Table of Contents
Table of Contents
1
Introduction
2
What Is Calibration
2
Why Should You Calibrate
2
How Often Should You Calibrate
2
Software and Documentation
2
Test Equipment
3
Test Conditions
3
Calibration Process
4
Initial Setup
4
Configuring the Half-Bridge Completion Jumpers
5
Configuring the Gain Jumpers
7
Configuring the Filter Jumpers
8
Configuring the Excitation Jumpers
9
Verification Procedure
10
Verifying Analog Input Offsets
10
Verifying Voltage Excitation Limits
11
Verifying Current Excitation Limits
12
Adjustment Procedure
13
Adjusting Analog Input Offsets
13
Adjusting Voltage Excitation
14
Adjusting Current Excitation
15
Verifying Adjusted Values
15
Test Limits
16
SCXI-1121 Front and Rear Panel Diagrams
19
National Instruments SCXI-1121 User Manual (19 pages)
Brand:
National Instruments
| Category:
Test Equipment
| Size: 0 MB
Table of Contents
Table of Contents
1
Introduction
2
What Is Calibration
2
Why Should You Calibrate
2
How Often Should You Calibrate
2
Equipment and Other Test Requirements
3
Test Equipment
3
Connectors
3
Documentation
4
Software
4
Test Conditions
5
Calibration Procedures
5
Configuring Your Module for Calibration
5
Configuring Digital Signal Connection Jumpers
9
Configuring Gain Jumpers
10
Configuring Filter Jumpers
11
Configuring Excitation Jumpers
11
Setting up Your Module for Calibration
14
Connecting Your Calibrator, DMM, and SCXI Module
15
Running the Calibration Procedure
15
Technical Support Resources
19
NI Web Support
19
Worldwide Support
19
National Instruments SCXI-1121 Quick Start Manual (25 pages)
Signal Conditioning eXtensions for Instrumentation
Brand:
National Instruments
| Category:
Test Equipment
| Size: 2 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
National Instruments SCXI-1121 Calibration Procedure (21 pages)
Brand:
National Instruments
| Category:
I/O Systems
| Size: 0 MB
Table of Contents
Equipment and Other Test Requirements
2
Software and Documentation
2
Test Conditions
3
Setting up the Module
4
Specifications
19
National Instruments SCXI-1121 Calibration Procedure (16 pages)
Brand:
National Instruments
| Category:
I/O Systems
| Size: 0 MB
Table of Contents
Equipment and Other Test Requirements
2
Test Conditions
2
Front and Rear Panel Diagrams
12
Specifications
14
National Instruments SCXI-1121 Instructions For Safe Use (4 pages)
Brand:
National Instruments
| Category:
Computer Hardware
| Size: 0 MB
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