National Instruments DAQ M Series manuals

National instruments DAQ M Series User Manual (162 pages)

Brand: National-instruments | Category: Tools | Size: 1.82 MB |

English

Table of contents

DAQ M Series

1

Important Information

3

Chapter 4

5

Chapter 5

6

Chapter 6

6

Digital Input and Output

6

Chapter 7

7

NI 6236 User Manual x ni.com

9

Contents

10

About This Manual

11

Related Documentation

12

NI-DAQmx Base

13

LabWindows

14

Measurement Studio

14

Training Courses

15

Technical Support on the Web

15

Getting Started

16

Device Specifications

17

Device Accessories and Cables

17

DAQ System Overview

18

DAQ-STC2

19

Sensors and Transducers

20

Cables and Accessories

21

Chapter 2 DAQ System Overview

22

Connector Information

23

Analog Input

25

Analog Input Range

26

Method 1

27

Method 2

28

Chapter 4 Analog Input

29

Figure 4-5. NI 6236 PGIA

30

NI-DAQmx Create

31

Virtual Channel.vi

31

Example 1

33

Example 2

33

Software-Timed Acquisitions

34

Hardware-Timed Acquisitions

34

Buffered

34

Analog Input Triggering

35

Field Wiring Considerations

35

Analog Input Timing Signals

36

Channel 0

37

Channel 1

37

Convert Period

37

Sample Period

37

AI Sample Clock Signal

39

Using an Internal Source

39

Using an External Source

39

Terminal

40

Other Timing Requirements

40

AI Convert Clock Signal

41

AI Hold Complete Event Signal

44

AI Start Trigger Signal

45

Using a Digital Source

45

AI Reference Trigger Signal

46

AI Pause Trigger Signal

47

Software-Timed Generations

50

Hardware-Timed Generations

51

Non-Buffered

51

Analog Output Triggering

52

Analog Output Timing Signals

53

AO Start Trigger Signal

54

AO Pause Trigger Signal

55

AO Sample Clock Signal

56

Chapter 5 Analog Output

58

Counter Input Applications

64

Chapter 7 Counters

65

Pulse-Width Measurement

67

Period Measurement

68

Single Period Measurement

69

Buffered Period Measurement

69

Semi-Period Measurement

70

Frequency Measurement

71

Counter (Averaged)

72

Using Two Counters

74

Figure 7-14. Method 3

75

X1 Encoding

77

X2 Encoding

78

X4 Encoding

78

Channel Z Behavior

78

890 21743

79

Counter Value 2 3 54344

80

Counter Output Applications

82

Pulse Train Generation

84

Frequency Generation

85

Using the Frequency Generator

85

Frequency Division

86

Pulse Generation for ETS

86

Counter Timing Signals

87

Counter n Gate Signal

89

Counter n Aux Signal

89

Counter n Up_Down Signal

90

Counter n HW Arm Signal

90

Default Counter Terminals

92

Counter Triggering

93

Other Counter Features

94

Prescaling

95

Duplicate Count Prevention

96

(No Duplicate Counting)

96

(Duplicate Counting)

97

Synchronization Modes

99

80 MHz Source Mode

100

Other Internal Source Mode

100

External Source Mode

100

Chapter 8 PFI

102

Connecting PFI Input Signals

103

PFI Filters

104

Table 8-1. Filters

105

Figure 8-4. Filter Example

105

I/O Protection

106

Programmable Power-Up States

106

Digital Isolation

108

Reducing Common-Mode Noise

108

Creating an AC Return Path

109

Non-Isolated Systems

109

Isolated Systems

109

Digital Routing and Clock

110

Generation

110

80 MHz Timebase

111

20 MHz Timebase

111

100 kHz Timebase

111

External Reference Clock

111

10 MHz Reference Clock

112

RTSI Connector Pinout

113

Using RTSI as Outputs

114

RTSI Filters

115

Figure 10-3. Filter Example

116

Table 10-2. Filters

116

PXI Clock and Trigger Signals

117

PXI_STAR Filters

118

Figure 10-4. Filter Example

119

Bus Interface

120

PXI Considerations

121

Data Transfer Methods

122

Interrupt Request (IRQ)

123

Programmed I/O

123

Triggering

124

• Analog input acquisition

125

• Analog output generation

125

• Counter behavior

125

NI 6236 Device Information

126

Figure A-1. NI 6236 Pinout

127

NI 6236 Specifications

128

Troubleshooting

130

Analog Output

131

Counters

132

Technical Support and

133

Professional Services

133

Glossary

135

Numerics

154

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