User Manuals: National Instruments NI 6238 I/O

Manuals and User Guides for National Instruments NI 6238 I/O. We have 3 National Instruments NI 6238 I/O manuals available for free PDF download: User Manual

National Instruments NI 6238 User Manual (172 pages)

DAQ M Series Isolated Current Input/C urrent Output Devices

Brand: National Instruments | Category: I/O Systems | Size: 2 MB

Important Information
3
Warranty
3
Table of Contents
5
About this Manual

12
- Conventions
  12
- Related Documentation
  13
  - Ni-Daq
    13
  - NI-Daqmx for Linux
    13
  - NI-Daqmx Base
    14
  - Labview
    14
  - Labwindows™/CVI
    15
  - Measurement Studio
    15
  - ANSI C Without ni Application Software
    15
  - NET Languages Without ni Application Software
    16
  - Device Documentation and Specifications
    16
  - Training Courses
    16
  - Technical Support on the Web
    16
Chapter 1 Getting Started

17
- Installing NI-Daqmx
  17
- Installing Other Software
  17
- Installing the Hardware
  17
- Device Pinouts
  17
- Device Specifications
  18
- Device Accessories and Cables
  18
Chapter 2 DAQ System Overview

19
- DAQ Hardware
  19
  - Daq-Stc2
    20
  - Calibration Circuitry
    21
- Sensors and Transducers
  21
- Cables and Accessories
  22
  - Custom Cabling
    22
- Programming Devices in Software
  23
Chapter 3 Connector Information

24
- I/O Connector Signal Descriptions
  24
- RTSI Connector Pinout
  26
Chapter 4 Analog Input

27
Chapter 5 Analog Output

52
Chapter 6 Digital Input and Output

62
Chapter 7 Counters

68
Chapter 8 PFI

106
Chapter 9 Isolation and Digital Isolators

114
- Digital Isolation
  115
- Benefits of an Isolated DAQ Device
  115
- Reducing Common-Mode Noise
  116
Chapter 10 Digital Routing and Clock Generation

117
- Clock Routing
  117
  - 80 Mhz Timebase
    118
  - 100 Khz Timebase
    118
  - External Reference Clock
    118
  - 10 Mhz Reference Clock
    119
- Synchronizing Multiple Devices
  119
- Real-Time System Integration Bus (RTSI)
  119
  - RTSI Connector Pinout
    120
  - Using RTSI as Outputs
    121
  - Using RTSI Terminals as Timing Input Signals
    122
  - RTSI Filters
    122
- PXI Clock and Trigger Signals
  123
  - PXI_STAR Trigger
    124
  - Pxi_Clk10
    124
  - PXI Triggers
    124
- DMA Controllers
  127
  - PXI_STAR Filters
    128
Chapter 11 Bus Interface

128
- PXI Considerations
  128
  - PXI Clock and Trigger Signals
    128
  - PXI and PXI Express
    128
  - Using PXI with Compactpci
    129
- Data Transfer Methods
  129
  - Direct Memory Access (DMA)
    129
  - Interrupt Request (IRQ)
    130
  - Programmed I/O
    130
  - Changing Data Transfer Methods between DMA and IRQ
    130
Appendix B

131
- Analog Input
  131
- Analog Output
  131
- Counters
  131
Chapter 12 Triggering

131
- Triggering with a Digital Source
  131
Appendix A Device-Specific Information

133
- NI 6238 Pinout
  133
- Screw Terminal
  135
- NI 6239 Pinout
  136
  - Troubleshooting
    140
  - Analog Input
    140
  - Analog Output
    141
Appendix C Technical Support and Professional Services

143

National Instruments NI 6238 User Manual (174 pages)

Isolated Current Input/Current Output Devices

Brand: National Instruments | Category: I/O Systems | Size: 4 MB

Table of Contents
6
About this Manual

13
- Conventions
  13
- Related Documentation
  14
  - Ni-Daq
    14
  - NI-Daqmx for Linux
    14
  - NI-Daqmx Base
    15
  - Labview
    15
  - Labwindows™/CVI
    16
  - Measurement Studio
    16
  - ANSI C Without ni Application Software
    16
  - NET Languages Without ni Application Software
    17
  - Device Documentation and Specifications
    17
  - Training Courses
    17
  - Technical Support on the Web
    17
Chapter 1 Getting Started

18
- Installing NI-Daqmx
  18
- Installing Other Software
  18
- Installing the Hardware
  18
- Device Pinouts
  18
- Device Specifications
  19
- Device Accessories and Cables
  19
Chapter 2 DAQ System Overview

20
- DAQ Hardware
  20
  - Daq-Stc2
    21
  - Calibration Circuitry
    22
- Sensors and Transducers
  22
- Cables and Accessories
  23
  - Custom Cabling
    23
- Programming Devices in Software
  24
Chapter 3 Connector Information

25
- I/O Connector Signal Descriptions
  25
- RTSI Connector Pinout
  27
Chapter 4 Analog Input

28
Chapter 5 Analog Output

53
Chapter 6 Digital Input and Output

63
Chapter 7 Counters

69
Chapter 8 PFI

107
Chapter 9 Isolation and Digital Isolators

115
- Digital Isolation
  116
- Benefits of an Isolated DAQ Device
  116
- Reducing Common-Mode Noise
  117
Chapter 10 Digital Routing and Clock Generation

118
- Clock Routing
  118
  - 80 Mhz Timebase
    119
  - 100 Khz Timebase
    119
  - External Reference Clock
    119
  - 10 Mhz Reference Clock
    120
- Synchronizing Multiple Devices
  120
- Real-Time System Integration Bus (RTSI)
  120
  - RTSI Connector Pinout
    121
  - Using RTSI as Outputs
    122
  - Using RTSI Terminals as Timing Input Signals
    123
  - RTSI Filters
    123
- PXI Clock and Trigger Signals
  124
  - Pxi_Clk10
    125
- DMA Controllers
  128
  - PXI Triggers
    129
  - PXI_STAR Trigger
    129
  - PXI_STAR Filters
    129
Chapter 11 Bus Interface

129
- PXI Considerations
  129
  - PXI Clock and Trigger Signals
    129
  - PXI and PXI Express
    129
  - Using PXI with Compactpci
    130
- Data Transfer Methods
  130
  - Direct Memory Access (DMA)
    130
  - Interrupt Request (IRQ)
    131
  - Programmed I/O
    131
  - Changing Data Transfer Methods between DMA and IRQ
    131
Chapter 12 Triggering

132
- Triggering with a Digital Source
  132
- Analog Input
  132
- Analog Output
  132
- Counters
  132
Appendix A

134
Device-Specific Information

134
- Figure A-1. ni 6238 Pinout
  135
- Figure A-2. ni 6239 Pinout
  138
Appendix B Troubleshooting

142
Appendix C

144
Technical Support and Professional Services

144
Glossary

146

National Instruments NI 6238 User Manual (173 pages)

Brand: National Instruments | Category: I/O Systems | Size: 2 MB

Table of Contents
6
About this Manual
13
Conventions
13
Related Documentation
14
Ni-Daq
14
NI-Daqmx for Linux
14
NI-Daqmx Base
15
Labview
15
Labwindows™/CVI
16
Measurement Studio
16
ANSI C Without ni Application Software
16
NET Languages Without ni Application Software
17
Device Documentation and Specifications
17
Training Courses
17
Technical Support on the Web
17
Getting Started
18
Installing NI-Daqmx
18
Installing Other Software
18
Installing the Hardware
18
Device Pinouts
18
Device Specifications
19
Device Accessories and Cables
19
DAQ System Overview
20
DAQ Hardware
20
Daq-Stc2
21
Calibration Circuitry
22
Sensors and Transducers
22
Cables and Accessories
23
Custom Cabling
23
Programming Devices in Software
24
Connector Information
25
I/O Connector Signal Descriptions
25
RTSI Connector Pinout
27
Analog Input
28
Analog Input Circuitry
28
Analog Input Range
29
Connecting Analog Current Input Signals
30
Method 1
30
Method 2
31
Analog Input Ground-Reference Settings
32
Configuring AI Ground-Reference Settings in Software
34
Multichannel Scanning Considerations
35
Use Short High-Quality Cabling
35
Minimize Current Step between Adjacent Channels
35
Avoid Scanning Faster than Necessary
36
Example 1
36
Example 2
36
Analog Input Data Acquisition Methods
37
Software-Timed Acquisitions
37
Hardware-Timed Acquisitions
37
Buffered
37
Non-Buffered
38
Analog Input Triggering
38
Field Wiring Considerations
38
Analog Input Timing Signals
39
AI Sample Clock Signal
42
Using an Internal Source
43
Using an External Source
43
Routing AI Sample Clock Signal to an Output Terminal
43
Other Timing Requirements
44
AI Sample Clock Timebase Signal
44
AI Convert Clock Signal
45
Using an Internal Source
45
Using an External Source
46
Routing AI Convert Clock Signal to an Output Terminal
46
Using a Delay from Sample Clock to Convert Clock
46
Other Timing Requirements
47
AI Convert Clock Timebase Signal
48
AI Hold Complete Event Signal
48
AI Start Trigger Signal
49
Using a Digital Source
49
Routing AI Start Trigger to an Output Terminal
49
AI Reference Trigger Signal
50
Using a Digital Source
51
Routing AI Reference Trigger Signal to an Output Terminal
51
AI Pause Trigger Signal
51
Routing AI Pause Trigger Signal to an Output Terminal
52
Getting Started with AI Applications in Software
52
Analog Output
53
Analog Output Circuitry
53
Analog Output Data Generation Methods
54
Software-Timed Generations
54
Hardware-Timed Generations
54
Non-Buffered
55
Buffered
55
Analog Output Triggering
56
Connecting Analog Current Output Signals
56
Analog Output Timing Signals
57
AO Start Trigger Signal
57
Using a Digital Source
58
Routing AO Start Trigger Signal to an Output Terminal
58
AO Pause Trigger Signal
58
Using a Digital Source
59
Routing AO Pause Trigger Signal to an Output Terminal
60
AO Sample Clock Signal
60
Using an Internal Source
60
Using an External Source
60
Routing AO Sample Clock Signal to an Output Terminal
60
Other Timing Requirements
61
AO Sample Clock Timebase Signal
61
Getting Started with AO Applications in Software
62
Digital Input and Output
63
I/O Protection
63
Programmable Power-Up States
63
Connecting Digital I/O Signals
64
Logic Conventions
65
Getting Started with DIO Applications in Software
66
Counters
69
Counter Input Applications
69
Counting Edges
69
Single Point (On-Demand) Edge Counting
69
Buffered (Sample Clock) Edge Counting
70
Non-Cumulative Buffered Edge Counting
71
Controlling the Direction of Counting
71
Pulse-Width Measurement
72
Single Pulse-Width Measurement
72
Buffered Pulse-Width Measurement
72
Period Measurement
73
Single Period Measurement
74
Buffered Period Measurement
74
Semi-Period Measurement
75
Single Semi-Period Measurement
75
Buffered Semi-Period Measurement
76
Frequency Measurement
76
Method 1-Measure Low Frequency with One Counter
76
Method 1B-Measure Low Frequency with One Counter (Averaged)
77
Method 2-Measure High Frequency with Two Counters
78
Method 3-Measure Large Range of Frequencies Using Two Counters
79
Choosing a Method for Measuring Frequency
80
Position Measurement
82
Measurements Using Quadrature Encoders
82
Measurements Using Two Pulse Encoders
84
Two-Signal Edge-Separation Measurement
85
Single Two-Signal Edge-Separation Measurement
85
Buffered Two-Signal Edge-Separation Measurement
86
Counter Output Applications
87
Simple Pulse Generation
87
Single Pulse Generation
87
Single Pulse Generation with Start Trigger
87
Retriggerable Single Pulse Generation
88
Pulse Train Generation
89
Continuous Pulse Train Generation
89
Frequency Generation
90
Using the Frequency Generator
90
Frequency Division
91
Pulse Generation for ETS
91
Counter Timing Signals
92
Counter N Source Signal
92
Routing a Signal to Counter N Source
93
Routing Counter N Source to an Output Terminal
93
Counter N Gate Signal
94
Routing a Signal to Counter N Gate
94
Routing Counter N Gate to an Output Terminal
94
Counter N aux Signal
94
Routing a Signal to Counter N aux
94
Counter N A, Counter N B, and Counter N Z Signals
95
Routing Signals to A, B, and Z Counter Inputs
95
Routing Counter N Z Signal to an Output Terminal
95
Counter N Up_Down Signal
95
Counter N HW Arm Signal
95
Routing Signals to Counter N HW Arm Input
96
Counter N Internal Output and Counter N TC Signals
96
Routing Counter N Internal Output to an Output Terminal
96
Frequency Output Signal
96
Routing Frequency Output to a Terminal
97
Default Counter Terminals
97
Counter Triggering
98
Arm Start Trigger
98
Start Trigger
98
Pause Trigger
98
Other Counter Features
99
Cascading Counters
99
Counter Filters
99
Prescaling
100
Duplicate Count Prevention
101
Example Application that Works Correctly (no Duplicate Counting)
101
Example Application that Works Incorrectly (Duplicate Counting)
102
Example Application that Prevents Duplicate Count
103
When to Use Duplicate Count Prevention
104
Enabling Duplicate Count Prevention in NI-Daqmx
104
Synchronization Modes
104
80 Mhz Source Mode
105
Other Internal Source Mode
105
External Source Mode
106
Pfi
107
Using PFI Terminals as Timing Input Signals
108
Exporting Timing Output Signals Using PFI Terminals
109
Using PFI Terminals as Static Digital Inputs and Outputs
109
Connecting PFI Input Signals
109
PFI Filters
110
I/O Protection
111
Programmable Power-Up States
112
Connecting Digital I/O Signals
112
Isolation and Digital Isolators
115
Digital Isolation
116
Benefits of an Isolated DAQ Device
116
Reducing Common-Mode Noise
117
Digital Routing and Clock Generation
118
Clock Routing
118
80 Mhz Timebase
119
100 Khz Timebase
119
External Reference Clock
119
10 Mhz Reference Clock
120
Synchronizing Multiple Devices
120
Real-Time System Integration Bus (RTSI)
120
RTSI Connector Pinout
121
Using RTSI as Outputs
122
Using RTSI Terminals as Timing Input Signals
123
RTSI Filters
123
PXI Clock and Trigger Signals
124
Pxi_Clk10
125
PXI Triggers
125
Bus Interface
128
DMA Controllers
128
PXI Considerations
129
PXI Clock and Trigger Signals
129
PXI and PXI Express
129
Using PXI with Compactpci
130
Data Transfer Methods
130
Direct Memory Access (DMA)
130
Interrupt Request (IRQ)
131
Programmed I/O
131
Changing Data Transfer Methods between DMA and IRQ
131
Triggering
132
Triggering with a Digital Source
132
Analog Input
132
Counters
132
Device-Specific Information
134
Figure A-1. ni 6238 Pinout
135
Figure A-2. ni 6239 Pinout
138
Analog Output
142
Technical Support and Professional Services
144
Glossary
146

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User Manuals: National Instruments NI 6238 I/O

National Instruments NI 6238 User Manual (172 pages)

Table of Contents

About this Manual

Chapter 1 Getting Started

Chapter 2 DAQ System Overview

Chapter 3 Connector Information

Chapter 4 Analog Input

Chapter 5 Analog Output

Chapter 6 Digital Input and Output

Chapter 7 Counters

Chapter 8 PFI

Chapter 9 Isolation and Digital Isolators

Chapter 10 Digital Routing and Clock Generation

Chapter 11 Bus Interface

Appendix B

Chapter 12 Triggering

Appendix A Device-Specific Information

Appendix C Technical Support and Professional Services

National Instruments NI 6238 User Manual (174 pages)

Table of Contents

About this Manual

Chapter 1 Getting Started

Chapter 2 DAQ System Overview

Chapter 3 Connector Information

Chapter 4 Analog Input

Chapter 5 Analog Output

Chapter 6 Digital Input and Output

Chapter 7 Counters

Chapter 8 PFI

Chapter 9 Isolation and Digital Isolators

Chapter 10 Digital Routing and Clock Generation

Chapter 11 Bus Interface

Chapter 12 Triggering

Appendix A

Device-Specific Information

Appendix B Troubleshooting

Appendix C

Technical Support and Professional Services

Glossary

National Instruments NI 6238 User Manual (173 pages)

Table of Contents

Related Products

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