National-instruments Data Acquisition Device E Series Uživatelský manuál Strana 63
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Hodnocené. / 5. Na základě hodnocení zákazníků
Chapter 2 Analog Input
E Series User Manual 2-30 ni.com
Figure 2-14. NI-DAQmx Create Virtual Channel.vi
Analog Input Timing Signals
In order to provide all of the timing functionality described throughout this
section, the DAQ-STC provides an extremely powerful and flexible timing
engine. Figure 2-15 summarizes all of the clock routing and timing options
provided by the analog input timing engine.
Figure 2-15. Analog Input Timing Engine Clock Routing and Timing Options.
E Series devices use the ai/SampleClock and ai/ConvertClock signals to
perform interval sampling. As Figure 2-16 shows, ai/SampleClock controls
the sample period, which is determined by the following equation:
1/sample period = sample rate
÷
200
RTSI 7
20 MHz
Timebase
Onboard
Clock
PFI 0–9,
RTSI 0–6
Onboard
Clock
ai/SampleClock
Timebase
ai/SampleClock
Ctr0InternalOutput
PFI 0–9,
RTSI 0–6
Divisor
Master
Timebase
Onboard
Clock
Divisor
ai/ConvertClock
Timebase
PFI 0–9,
RTSI 0–6
Ctr0InternalOutput
ai/Convert
Clock
÷
÷
- DAQ E Series 1
- Important Information 3
- Compliance 4
- Chapter 2 6
- Chapter 3 8
- Contents 10
- About This Manual 12
- Related Documentation 13
- NI-DAQmx Base 14
- LabWindows/CVI 15
- Measurement Studio 15
- Training Courses 17
- Technical Support on the Web 17
- DAQ System Overview 18
- DAQ Hardware 19
- Calibration Circuitry 20
- Signal Conditioning 21
- Signal Conditioning Options 22
- Cables and Accessories 23
- Chapter 1 DAQ System Overview 24
- Custom Cabling 26
- Terminal Name Equivalents 31
- +5 V Power Source 33
- Input Polarity and Range 35
- Chapter 2 Analog Input 38
- Figure 2-2. E Series PGIA 39
- Table 2-5. NI-PGIA Signal 40
- Figure 2-3. Dither 42
- Use Low Impedance Sources 43
- Example 1 45
- Example 2 46
- AI Data Acquisition Methods 46
- Software-Timed Acquisitions 46
- Hardware-Timed Acquisitions 46
- Analog Input Triggering 47
- AI Start Trigger Signal 48
- Using a Digital Source 48
- Using an Analog Source 48
- = 50 to 100 ns 49
- Pre-Trigger Samples 50
- Reference Trigger 50
- Post-Trigger Samples 50
- Complete Buffer 50
- Types of Signal Sources 55
- Floating Signal Sources 55
- (RSE Configuration) 60
- (NRSE Configuration) 60
- Field Wiring Considerations 61
- Traditional NI-DAQ (Legacy) 62
- NI-DAQmx 62
- Analog Input Timing Signals 63
- Figure 2-16. Interval Sample 64
- AI Sample Clock Signal 70
- Using an Internal Source 70
- Using an External Source 70
- Other Timing Requirements 72
- AI Convert Clock Signal 74
- AI Hold Complete Event Signal 79
- External Strobe Signal 79
- Reference Selection 82
- Polarity Selection 83
- Reglitch Selection 83
- AO Data Generation Methods 84
- Analog Output Triggering 85
- AO Start Trigger Signal 86
- = 25 to 50 ns 87
- Chapter 3 Analog Output 88
- AO Sample Clock Signal 91
- = 50 to 75 ns 92
- Digital I/O 96
- Extended Digital I/O 97
- Power-On State 98
- Timing Specifications 99
- Chapter 4 Digital I/O 100
- Mode 1 Input Timing 101
- Mode 1 Output Timing 102
- Mode 2 Bidirectional Timing 103
- Configured for Digital Output 105
- Counters 106
- Counter Timing Signals 107
- Counter 0 Source Signal 108
- Counter 0 Gate Signal 109
- Chapter 5 Counters 110
- CTR 0 OUT Pin 111
- Counter 0 Up/Down Signal 111
- Counter 1 Source Signal 111
- Counter 1 Gate Signal 112
- Counter 1 Up/Down Signal 114
- Frequency Output Signal 114
- Master Timebase Signal 114
- Programmable Function 116
- Interfaces (PFI) 116
- Digital Routing 118
- Chapter 7 Digital Routing 119
- Connecting Timing Signals 121
- Routing Signals in Software 122
- Real-Time System Integration 123
- Bus (RTSI) 123
- PXI E Series Devices 124
- Device and RTSI Clocks 126
- Bus Interface 127
- Data Transfer Methods 128
- Chapter 9 Bus Interface 129
- Triggering 130
- Chapter 10 Triggering 131
- PFI 0/AI START TRIG Pin 132
- Analog Input Channel 132
- Analog Trigger Actions 132
- Analog Trigger Types 133
- Window Triggering 134
- Analog Trigger Accuracy 135
- Device-Specific Information 136
- I/O Connector 137
- NI 6013/6014 Family 140
- NI 6013/6014 Block Diagram 141
- NI 6013/6014 Specifications 141
- NI 6013 Pinout 141
- Figure A-4. NI 6013 Pinout 142
- NI 6014 Pinout 143
- Figure A-5. NI 6014 Pinout 144
- NI 6015/6016 Family 145
- NATIONAL 146
- INSTRUMENTS 146
- DAQ - STC 147
- USB ConnectorExternal Power 147
- I/O Connectors 147
- Analog Input 148
- Single-Ended Signals 149
- Analog Output 150
- User <1..2> 151
- Other Signals 152
- DAQPad-6015/6016 LED Patterns 153
- NI DAQPad-6015 Pinout 156
- NI DAQPad-6015 BNC Pinout 157
- NC = No Connect 158
- NI 6020E Family 159
- DAQPad-6020E Block Diagram 161
- AO External Reference 164
- DAQPad-6020E LED Patterns 167
- DAQPad-6020E Specifications 167
- NI DAQPad-6020E Pinout 167
- NI DAQPad-6020E BNC Pinout 169
- NI 6023E/6024E/6025E Family 170
- NI 6023E Pinout 172
- Figure A-37. NI 6023E Pinout 173
- NI 6024E Pinout 174
- Figure A-38. NI 6024E Pinout 175
- NI 6025E Pinout 176
- PCI/PXI Bus 179
- NI 6030E Pinout 180
- Figure A-42. NI 6030E Pinout 181
- NI 6031E Pinout 184
- Figure A-44. NI 6031E Pinout 185
- NI 6032E Pinout 186
- Figure A-45. NI 6032E Pinout 187
- NI 6033E Pinout 188
- Figure A-46. NI 6033E Pinout 189
- NI 6034E/6035E/6036E Family 190
- NI 6034E Pinout 192
- Figure A-49. NI 6034E Pinout 193
- NI 6035E Pinout 194
- Figure A-50. NI 6035E Pinout 195
- NI 6036E Pinout 196
- Figure A-51. NI 6036E Pinout 197
- NI 6040E Family 198
- NI 6040E Pinout 199
- Figure A-53. NI 6040E Pinout 200
- PCI-MIO-16E-4 201
- PCI-MIO-16E-4 Block Diagram 202
- NI 6052E Family 204
- DAQPad-6052E Block Diagram 206
- DAQPad-6052E LED Patterns 212
- NI DAQPad-6052E Pinout 212
- NI DAQPad-6052E BNC Pinout 214
- NI PCI/PXI-6052E 214
- NI PCI/PXI-6052E Pinout 215
- NI DAQCard-6062E 217
- DAQCard-6062E Block Diagram 218
- DAQCard-6062E Specifications 218
- NI DAQCard-6062E Pinout 218
- Figure A-72. NI 6062E Pinout 219
- NI 6070E/6071E Family 220
- DAQPad-6070E Block Diagram 222
- Figure A-83 227
- DAQPad-6070E LED Patterns 228
- NI DAQPad-6070E BNC Pinout 228
- NI 6070E/6071E Block Diagram 230
- NI PCI/PXI-6070E Pinout 230
- NI PCI-6071E Pinout 232
- PCI-MIO-16E-1 234
- PCI-MIO-16E-1 Block Diagram 235
- NI 6070E/6071E Specifications 237
- I/O Connector Pinouts 238
- 100-68-68-Pin 240
- NC = No connect 241
- 100-50-50-Pin 243
- 50-pin connectors 244
- Troubleshooting 246
- Channel 0 247
- Channel 1 247
- Convert Period 247
- Sample Period 247
- Appendix C Troubleshooting 248
- Technical Support and 249
- Professional Services 249
- Glossary 251
- Numerics 258
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