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Manuals and User Guides for National Instruments Lab-PC+. We have
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National Instruments Lab-PC+ manual available for free PDF download: User Manual
National Instruments Lab-PC+ User Manual (211 pages)
Low-Cost Multifunction I/O Board for ISA
Brand:
National Instruments
| Category:
I/O Systems
| Size: 3 MB
Table of Contents
User Manual
1
Warranty
3
Table of Contents
5
About this Manual
10
Organization of the Lab-PC+ User Manual
10
Conventions Used in this Manual
11
National Instruments Documentation
12
Customer Communication
12
Chapter 1 Introduction
13
About the Lab-PC
13
What You Need to Get Started
13
Software Programming Choices
14
Labview and Labwindows/CVI Application Software
14
NI-DAQ Driver Software
14
Register-Level Programming
15
Figure 1-1. the Relationship between the Programming Environment, NI-DAQ, and Your Hardware
15
Optional Equipment
16
Unpacking
16
Chapter 2 Configuration and Installation
17
Board Configuration
17
PC Bus Interface
17
Figure 2-1. Parts Locator Diagram
18
Base I/O Address Selection
19
Table 2-1. PC Bus Interface Factory Settings
19
Figure 2-2. Example Base I/O Address Switch Settings
20
Table 2-2. Switch Settings with Corresponding Base I/O Address and Base I/O Address Space
21
DMA Channel Selection
22
Figure 2-3. DMA Jumper Settings for DMA Channel 3 (Factory Setting)
22
Table 2-3. DMA Channels for the Lab-PC
22
Interrupt Selection
23
Figure 2-4. DMA Jumper Settings for Disabling DMA Transfers
23
Figure 2-5. Interrupt Jumper Setting IRQ5 (Factory Setting)
23
Analog I/O Configuration
24
Figure 2-6. Interrupt Jumper Setting for Disabling Interrupts
24
Analog Output Configuration
25
Bipolar Output Selection
25
Figure 2-7. Bipolar Output Jumper Configuration (Factory Setting)
25
Table 2-4. Analog I/O Jumper Settings
25
Unipolar Output Selection
26
Analog Input Configuration
26
Input Mode
26
Figure 2-8. Unipolar Output Jumper Configuration
26
DIFF Input (Four Channels)
27
Table 2-5. Input Configurations Available for the Lab-PC
27
RSE Input (Eight Channels, Factory Setting)
28
Figure 2-9. DIFF Input Configuration
28
Figure 2-10. RSE Input Configuration
28
NRSE Input (Eight Channels)
29
Analog Input Polarity Configuration
29
Bipolar Input Selection
29
Figure 2-11. NRSE Input Configuration
29
Unipolar Input Selection
30
Figure 2-12. Bipolar Input Jumper Configuration (Factory Setting)
30
Figure 2-13. Unipolar Input Jumper Configuration
30
Hardware Installation
31
Chapter 3 Signal Connections
32
I/O Connector Pin Description
32
Signal Connection Descriptions
33
Figure 3-1. Lab-PC+ I/O Connector Pin Assignments
33
Analog Input Signal Connections
35
Types of Signal Sources
36
Floating Signal Sources
36
Figure 3-2. Lab-PC+ Instrumentation Amplifier
36
Ground-Referenced Signal Sources
37
Input Configurations
37
Differential Connection Considerations (DIFF Configuration)
37
Table 3-1. Recommended Input Configurations for Ground-Referenced and Floating Signal Sources
37
Differential Connections for Grounded Signal Sources
38
Differential Connections for Floating Signal Sources
39
Figure 3-3. Differential Input Connections for Grounded Signal Sources
39
Figure 3-4. Differential Input Connections for Floating Sources
40
Single-Ended Connection Considerations
41
Single-Ended Connections for Floating Signal Sources (RSE Configuration)
41
Single-Ended Connections for Grounded Signal Sources (NRSE Configuration)
42
Figure 3-5. Single-Ended Input Connections for Floating Signal Sources
42
Common-Mode Signal Rejection Considerations
43
Analog Output Signal Connections
43
Figure 3-6. Single-Ended Input Connections for Grounded Signal Sources
43
Digital I/O Signal Connections
44
Figure 3-7. Analog Output Signal Connections
44
Figure 3-8. Digital I/O Connections
46
Port C Pin Connections
46
Table 3-2. Port C Signal Assignments
47
Timing Specifications
47
Mode 1 Input Timing
49
Mode 1 Output Timing
50
Mode 2 Bidirectional Timing
51
Timing Connections
52
Data Acquisition Timing Connections
52
Figure 3-9. EXTCONV* Signal Timing
52
Figure 3-10. Posttrigger Data Acquisition Timing Case 1
53
Figure 3-11. Posttrigger Data Acquisition Timing Case 2
53
Figure 3-12. Pretrigger Data Acquisition Timing
54
General-Purpose Timing Signal Connections and General-Purpose Counter/Timing Signals
55
Figure 3-13. EXTUPDATE* Signal Timing for Updating DAC Output
55
Figure 3-14. EXTUPDATE* Signal Timing for Generating Interrupts
55
Figure 3-15. Event-Counting Application with External Switch Gating
56
Figure 3-16. Frequency Measurement Application
57
Figure 3-17. General-Purpose Timing Signals
58
Cabling
59
Chapter 4 Theory of Operation
60
Functional Overview
60
Figure 4-1. Lab-PC+ Block Diagram
60
PC I/O Channel Interface Circuitry
61
Figure 4-2. PC I/O Interface Circuitry Block Diagram
62
Analog Input and Data Acquisition Circuitry
63
Figure 4-3. Analog Input and Data Acquisition Circuitry Block Diagram
63
Analog Input Circuitry
64
Data Acquisition Timing Circuitry
64
Single-Channel Data Acquisition
65
Multiple-Channel (Scanned) Data Acquisition
65
Data Acquisition Rates
66
Table 4-1. Analog Input Settling Time Versus Gain
66
Table 4-2. Lab-PC+ Maximum Recommended Data Acquisition Rates
67
Table 4-3. Bipolar Analog Input Signal Range Versus Gain
67
Table 4-4. Unipolar Analog Input Signal Range Versus Gain
67
Analog Output Circuitry
68
Figure 4-4. Analog Output Circuitry Block Diagram
68
Digital I/O Circuitry
69
Figure 4-5. Digital I/O Circuitry Block Diagram
69
Timing I/O Circuitry
70
Figure 4-6. Timing I/O Circuitry Block Diagram
71
Figure 4-7. Two-Channel Interval-Scanning Timing
72
Figure 4-8. Single-Channel Interval Timing
73
Figure 4-9. Counter Block Diagram
73
Chapter 5 Calibration
74
Calibration Equipment Requirements
74
Calibration Trimpots
75
Figure 5-1. Calibration Trimpot Location Diagram
75
Analog Input Calibration
76
Board Configuration
77
Bipolar Input Calibration Procedure
77
Table 5-1. Voltage Values of ADC Input
77
Unipolar Input Calibration Procedure
78
Analog Output Calibration
79
Board Configuration
79
Bipolar Output Calibration Procedure
79
Unipolar Output Calibration Procedure
81
Appendix A Specifications
82
Analog Input
82
Analog Output
85
Appendix Boki 82C53 Data Sheet
88
Appendix Coki 82C55A Data Sheet
100
Appendix D
117
Register Map and Descriptions
117
Table D-1. Lab-PC+ Register Map
118
Register Description Format
119
Register Description
119
Register Sizes
119
Configuration and Status Register Group
120
Analog Input Register Group
131
Analog Output Register Group
137
Appendix E
157
Register-Level Programming
157
Programming the Analog Input Circuitry
158
Table E-1. Unipolar Input Mode A/D Conversion Values (Straight Binary Coding
160
Table E-2. Bipolar Input Mode A/D Conversion Values (Two's Complement Coding
160
Clearing the Analog Input Circuitry
161
Programming the Analog Output Circuitry
176
Table E-3. Analog Output Voltage Versus Digital Code
177
(Unipolar Mode, Straight Binary Coding
177
(Bipolar Mode, Two's Complement Coding
178
Figure E-1. Control-Word Format with Control-Word Flag Set
180
Figure E-2. Control-Word Format with Control-Word Flag Set
180
Table E-5. Mode 0 I/O Configurations
182
Table E-6. Port C Set/Reset Control Words
189
Appendix F Customer Communication
191
Technical Support Form
192
Other Products
193
Documentation Comment Form
194
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