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National Instruments SCXI-1000 Getting Started
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SCXI
™
Getting
Started
with
SCXI
Getting
Started
with
SCXI
July
2000
Edi
tion
Part
Number
3
20515F-01
2
Table of Contents
Default Chapter
4
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
Other manuals for National Instruments SCXI-1000
User Manual
73 pages
Quick Start Guide
143 pages
4
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National Instruments SCXI-1000 Specifications
General
Brand
National Instruments
Model
SCXI-1000
Category
Control Unit
Language
English
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